Academic literature on the topic 'Endocardial disease'
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Journal articles on the topic "Endocardial disease"
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Kanai, Masahito, Takeshi Sakurai, Kunio Yoshinaga, Kaneyuki Aoyagi, Takashi Hitsumoto, Masaki Yoshinuma, Takashi Uchi, et al. "Percutaneous Dye Image Cardioscopy for Detection of Endocardial Lesions." Diagnostic and Therapeutic Endoscopy 7, no. 1 (January 1, 2000): 29–33. http://dx.doi.org/10.1155/dte.7.29.
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Endocardial lesions are caused not only by inflammatory processes but also by myocardial ischemia, resulting in endocardial thrombosis and cerebral embolism. We deviced a method for direct visualization of endocardial damages by a novel dye image cardioscopy with Evans blue and examined its feasibility in patients with heart disease. The dye was injected into the left ventricle before and after endomyocardial biopsy. Endocardial surface was stained in dark blue in 63% of patients with angina pectoris before biopsy. After biopsy, the biopsied portions were stained in blue in all. The results indicate that endocardium is damaged even in apparently intact LV in patients with ischemic heart disease and that endomyocardial biopsy causes severe endocardial damages.
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Gudenschwager, Erwin K., Jonathan A. Abbott, and Tanya LeRoith. "Dilated cardiomyopathy with endocardial fibroelastosis in a juvenile Pallas cat." Journal of Veterinary Diagnostic Investigation 31, no. 2 (January 29, 2019): 289–93. http://dx.doi.org/10.1177/1040638719827061.
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Dilated cardiomyopathy (DCM) is a myocardial disease characterized by ventricular chamber dilation associated with systolic myocardial dysfunction in the absence of other cardiac lesions. DCM occasionally develops in conjunction with proliferation of fibroelastic fibers in the endocardium, producing endocardial fibroelastosis (EFE). Although early reports describe EFE as a primary disease, evidence now suggests that EFE may develop as a response to myocardial dysfunction. Echocardiographic evaluation of a 4-wk-old Pallas cat ( Otocolobus manul) with respiratory distress revealed enlargement of both atria, enlarged end-systolic left ventricular dimension, and left ventricular dilation. DCM was diagnosed, and the cat was euthanized, given the poor prognosis. Postmortem examination revealed pericardial effusion and biventricular and biatrial enlargement. The interventricular septum and free walls of ventricles were thin. Histologically, the endocardium of the left and right ventricles was diffusely thickened; Verhoeff–Van Gieson staining of the left ventricular endocardium revealed a moderate amount of endocardial accumulation of elastin and collagen. These fibers were more prominent in papillary muscles and around coronary blood vessels. Based on these findings, we diagnosed DCM with EFE. Cardiac diseases are rarely diagnosed in wild felids.
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Lurie, Paul R. "Changing concepts of endocardial fibroelastosis." Cardiology in the Young 20, no. 2 (March 29, 2010): 115–23. http://dx.doi.org/10.1017/s1047951110000181.
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AbstractEndocardial fibroelastosis is not a disease but a reaction of the endocardium. I review the history of the term with emphasis on the gradual understanding of the many causes of this reaction. I include a comprehensive list of diseases or other cardiac stresses that authors have reported in association, and I try to explain the mechanism of the reaction. Although endocardial fibroelastosis is rare today, I issue a warning of a possible epidemic recrudescence of some of the associated diseases. My hope is for nosologic purity, therefore that outworn but surviving concepts will be firmly rejected.
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Coumbe, K. M. "Cardiac disease: endocardial fibroelastosis." Equine Veterinary Education 14, no. 2 (January 5, 2010): 81–82. http://dx.doi.org/10.1111/j.2042-3292.2002.tb00145.x.
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Nishida, Takafumi, and Daihiko Hakuno. "Endocardial Calcification in Behçet's Disease." New England Journal of Medicine 369, no. 21 (November 21, 2013): e28. http://dx.doi.org/10.1056/nejmicm1305579.
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EBELING, PETER, JOHN R. BURKE, and DOROTHY J. RADFORD. "Endocardial fibroelastosis and infantile polycystic disease." Journal of Paediatrics and Child Health 21, no. 3 (August 1985): 197–98. http://dx.doi.org/10.1111/j.1440-1754.1985.tb02134.x.
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Lurie, Paul R. "Endocardial fibroelastosis is not a disease." American Journal of Cardiology 62, no. 7 (September 1988): 468–70. http://dx.doi.org/10.1016/0002-9149(88)90981-2.
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Pangonytė, Dalia, Elena Stalioraitytė, Danutė Kazlauskaitė, Reda Žiuraitienė, Zita Stanionienė, and Sonata Kerpauskienė. "Changes of heart geometry in patients with ischemic heart disease." Medicina 44, no. 1 (December 23, 2007): 8. http://dx.doi.org/10.3390/medicina44010002.
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Objective. The aim of the study was to determine ventricular and atrial cardiometric parameters at preinfarction and postinfarction stage of ischemic heart disease. Object and methods. Cardiometric parameters (mass, endocardial surface area, the tracts of flow and outflow, etc.) of 132 men (mean age of 49.7±8.9 years) who had died suddenly during prehospital period (within 6 hours) after the first or repeated acute event of “pure” ischemic heart disease were investigated. These patients had no other, except ischemia, factors predisposing myocardial hypertrophy as well as clinical symptoms of heart failure. The decedents were divided into preinfarction (71 men) and postinfarction ischemic heart disease (61 men) groups. Results. At preinfarction stage of ischemic heart disease, mass and endocardial surface area of all parts of the heart were increased, the tracts of flow and outflow – longer. At postinfarction stage, only corresponding left ventricular and atrial parameters were more increased. Conclusions. Eccentric type of left ventricular hypertrophy (proportional increase of mass and endocardial surface area) and concentric type of right ventricular and right and left atrial hypertrophy (the part of myocardium mass per unit of endocardial area is greater) were determined at preinfarction stage of ischemic heart disease. At postinfarction stage, at least as far as evidence of heart failure is not overt, only the corresponding left ventricular and atrial hypertrophy progresses.
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Romero, Jorge, Roberto C. Cerrud-Rodriguez, Luigi Di Biase, Juan Carlos Diaz, Isabella Alviz, Vito Grupposo, Luis Cerna, et al. "Combined Endocardial-Epicardial Versus Endocardial Catheter Ablation Alone for Ventricular Tachycardia in Structural Heart Disease." JACC: Clinical Electrophysiology 5, no. 1 (January 2019): 13–24. http://dx.doi.org/10.1016/j.jacep.2018.08.010.
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Carneiro, Renata de Carvalho Bicalho, Alexandre Lemos da Silveira Santos, Luisa Campos Caldeira Brant, Fábio Tôrres Rabelo, Carla Maia Ligeiro, Isabella Peixoto de Barcelos, Vanessa Barbosa Silva, Virgínia Sheila Xavier Silva, and Maria do Carmo Pereira Nunes. "Endomyocardial fibrosis associated with mansoni schistosomiasis." Revista da Sociedade Brasileira de Medicina Tropical 44, no. 5 (October 2011): 644–45. http://dx.doi.org/10.1590/s0037-86822011000500026.
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Endomyocardial fibrosis (EMF) is a neglected tropical disease that affects millions of people worldwide. EMF is the most common cause of restrictive cardiomyopathy, caused by deposition of fibrous tissue on endocardial surfaces. EMF is a major cause of death in areas where it is endemic, but the pathogenesis of the disease is poorly understood. Schistosomiasis mansoni is a parasitic disease endemic in Brazil, where EMF has also been described. The association between EMF and schistosomiasis has been suggested in various publications, seeking a possible correlation between endocardial and periportal fibroses. This report describes a case of EMF associated with schistosomiasis.
Dissertations / Theses on the topic "Endocardial disease"
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Maurin, Max. "Rôle du pH phagolysosomial dans l'action des antibiotiques sur les bactéries intracellulaires." Paris 7, 1994. http://www.theses.fr/1994PA077067.
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L'absence d'activité d'un antibiotique sur un microorganisme à vie intracellulaire peut correspondre à son incapacité à pénétrer dans la cellule eucaryote, a une localisation subcellulaire différente de celle du microorganisme considéré, ou à une inactivation intracellulaire de l'antibiotique. Nous avons testé l'hypothèse d'une inactivation des antibiotiques dans le milieu phagolysosomial acide, à travers deux modèles de bactéries vivant dans ce compartiment cellulaire ; staphylococcus aureus et coxiella burnetii. Nous avons vérifié dans un premier temps la possibilité d'alcaliniser le ph phagolysosomial par l'utilisation d'agents lysosomotropes. Nous avons ensuite démontré l'effet bactéricide de l'association des agents lysosomotropes aux antibiotiques, alors que ni les agents lysosomotropes ni les antibiotiques n'étaient bactéricides isolement. L'alcalinisation phagolysosomiale est le mécanisme par lequel les agents lysosomotropes ont rétabli l'activité des antibiotiques. Nous avons par ailleurs élaboré un nouveau modèle expérimental d'endocardite à staphylococcus aureus chez le cobaye. Du fait de la méthodologie utilisée, ce modèle est plus proche de l'endocardite sur valve native. Notre but final est de créer un modèle d'endocardite à coxiella burnetii. Ce modèle permettrait notamment de tester in vivo l'activité de l'association des agents lysosomotropes aux antibiotiques.
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Tavares, Marta Monteiro Pais. "Caracterização de Enterococcus spp. isolados da boca e do coração de cães com doença periodontal." Master's thesis, Universidade de Lisboa. Faculdade de Medicina Veterinária, 2014. http://hdl.handle.net/10400.5/7617.
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Dissertação de Mestrado Integrado em Medicina VeterináriaO presente estudo pretende verificar a possível associação entre a doença periodontal e a doença cardiovascular, avaliando a presença e diversidade de Enterococcus spp. na gengiva e no coração de cães com doença periodontal. Através de métodos fenotípicos e moleculares identificaram-se 117 isolados como pertencentes ao género Enterococcus e avaliou-se a sua diversidade pela técnica de PCR-fingerprinting. Selecionaram-se 46 isolados representantes, 39 identificados como E. faecalis, 7 como E. faecium e 2 permaneceram por identificar. Para estimar o potencial de patogenicidade avaliaram-se os isolados quanto à suscetibilidade a antimicrobianos e à presença de fatores de virulência. Todos os isolados mostraram resistência à clindamicina; para a tetraciclina e a gentamicina as percentagens foram acima dos 50% e para os restantes antimicrobianos mantiveram-se abaixo desse valor. Na pesquisa de fatores de virulência 43% dos isolados revelaram-se β-hemolíticos e 23% gelatinase positivos. Para os genes de virulência pesquisados detetaram-se percentagens acima dos 50% para gelE, efaAfs, ebpA, ebpB, ebpC e gls24 e abaixo desse valor para agg, esp, efaAfm, cylA, acm e ace. Não se verificou associação entre a doença periodontal e a endocardite bacteriana, mas foi possível verificar a presença de bactérias de importância clínica disseminadas pela boca e coração de cães em níveis relativamente elevados, sendo de suma importância prosseguir estudos no sentido de melhor compreender esta possível associação.
ABSTRACT - Characterization of Enterococcus spp. isolated from the mouth and heart of dogs with periodontal disease - The present study investigated the possible association between periodontal and cardiovascular disease, evaluating the presence and diversity of Enterococcus spp. in the gum and heart of dogs with periodontal disease. Phenotypic and molecular methods were used, yielding a total of 117 isolates identified as Enterococcus spp., evaluated for diversity by PCR-fingerprinting. 46 representative isolates were selected, 39 of which identified as E. faecalis, 7 as E. faecium and two remained unidentified. To estimate the potential pathogenicity of the isolates, they were evaluated for susceptibility to antimicrobial agents and the presence of virulence factors. All isolates showed resistance to clindamycin; for tetracycline and gentamicin percentages were above 50% and for the remaining antimicrobials remained below this value. In search of virulence factors 43% of the isolates proved to be β-hemolytic and 23% gelatinase positive. For the virulence genes surveyed, percentages observed were above 50% for gelE, efaAfs, ebpA, ebpB, ebpC and gls24 and below this value for agg, esp, efaAfm, cylA, acm and ace. It was not possible to establish an association between periodontal disease and bacterial endocarditis, but it was possible to verify the presence of bacteria of clinical importance disseminated through the mouth and heart of dogs at relatively high levels. It is extremely important to continue studies to better understand this possible association.
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Ramos, Anselmo Silva. "Bacteremia transit?ria e risco de endocardite em c?es com doen?a periodontal em diferentes procedimentos odontol?gicos e usuais. 2010." Universidade Federal Rural do Rio de Janeiro, 2011. https://tede.ufrrj.br/jspui/handle/tede/922.
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Previous issue date: 2011-01-25Based on the premisse that the oral trauma might cause the introduction of bacteria in the bloodstream, this study was developed aiming at investigating the frequency of transitory bacteremia in different dental procedures and the usual in dogs and the risk of infectious endocarditis in these animals. 36 dogs were were evaluated and classified as to the degree of the periodontal disease in six treatments: T1 (n=5) healthy gum/ negative control;T2(n=6) mild gingivitis; T3 (n=6) moderate or severe gingivitis/feeding;T4(n=6)moderate or severe gingivitis / toothbrushing t5(n=6)moerate or severe periodontitis/ removal of subgum plaque ;T5(n=7) severe periodonctis / exodontia. Blood samples for hemogram and hemoculture were obtained before the procedures, and two for hemoculture with thirty-minute breaks after the procedures. The hemoculture was performed in triphasic hemobac and the hemograms in electronic counter. After that, the animals were sumitted to cardiac assessment by ultrasound tests. A great accumulation of plaque was observed in animals of different ages especially in the upper molar and premolar teeth. The hemogram revealed values indicative of ANN, normal leucometria and trombocitopenia in all groups. There were 22 % of positive hemocultures beforem, 32,2% immediately after and 30 minutes after the procedures with mostly Staphylococcus sp and Streptococcus sp .In the ultrasound tests there were no alterations indicative of proliferative vegetative lesions. The diameters of the atria and ventricles were smaller in the animals with periodontitis. The cardiac debt was also smaller in these animals. The thickness of the walls of the ventricles were smaller in the healthy animals. The average mitral thickness did not significantly vary in the healthy animals and the ones with PD. The average values were compatible with endocardiosis (3,39 +_ 0,71) in 31 animals. The two represent the measurement of the diameter of the root of the Aorta out of the limits and the relation LV/AO made cardiopathy evident in at least 15 animals. The cardiac debt was smaller in the animals with PD within the group of weight associated with other parameters of the ventricular function suggest a PD effect on the cardiocirculatory activity.
Com base na premissa de que o trauma oral pode provocar a introdu??o de bact?rias na corrente sangu?nea, este estudo foi desenvolvido com a finalidade de investigar a freq??ncia de bacteremia transit?ria em diferentes procedimentos odontol?gicos e usuais em c?es e o risco de endocardite infecciosa nesses animais. Foram avaliados 36 c?es classificados quanto ao grau da doen?a periodontal em seis tratamentos: T1 (n=5) gengivas saud?veis / Controle negativo; T2 (n=6) - gengivite leve; T 3 (n= 6) gengivite moderada ou grave / alimenta??o; T 4 (n= 6) gengivite moderada ou grave / escova??o; T 5 (n=6) - periodontite moderada ou grave / remo??o da placa subgengival; T6 (n=7) periodontite grave / exodontia. Amostras de sangue para hemograma e hemocultura foram obtidas antes dos procedimentos, e duas para hemocultura com intervalos de 30 minutos ap?s os procedimentos. A hemocultura foi realizada em Hemobac trif?sico e os hemogramas em contador eletr?nico. Ap?s, os animais foram submetidos ? avalia??o card?aca pela ecocardiografia. Em animais de diferentes idades foi observado grande ac?mulo de placa, sobretudo nos pr?-molares e molares superiores. O hemograma revelou valores indicativos de ANN, leucometria normal e trombocitopenia em todos os grupos. Obteve-se 22% de hemoculturas positivas antes, 32,2% imediatamente e 30 minutos ap?s os procedimentos com predom?nio de Staphylococcus sp e Streptococos sp. Na avalia??o ultrassonogr?fica n?o foram evidenciadas altera??es indicativas de les?es proliferativas vegetativas. Os di?metros dos ?trios e ventr?culos foram menores nos animais com periodontite. Tamb?m o d?bito card?aco foi menor nesses animais. A espessura da parede do ventr?culo foi menor nos animais sadios. A espessura m?dia da mitral n?o variou significativamente entre animais sadios e com DP. Os valores m?dios foram compat?veis com endocardiose (3,39 ? 0,71) em 31 animais. Dois apresentaram a mensura??o do di?metro da raiz da aorta fora dos limites e a rela??o VE/AO evidenciou cardiopatia em pelo menos 15 animais. O d?bito card?aco menor em animais com DP na mesma faixa de peso em associa??o com outros par?metros da fun??o ventricular sugere um efeito da DP sobre a atividade cardiocirculat?ria.
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Timerman, Lilia. "Avaliação clínica e microbiológica periodontal em portadores de cardiopatia valvar na gestação." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/5/5131/tde-14102008-151718/.
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Microorganismos da cavidade oral têm sido admitidos como causadores de doenças sistêmicas com reconhecido mecanismo de disseminação via corrente sangüínea. Diferentes fatores, incluindo a presença da doença periodontal, têm influência no risco de bacteremia oral, podendo ocasionar endocardite infecciosa por Streptococcus viridans. Sendo assim, a manutenção da saúde bucal adquire elevado grau de importância em gestantes portadoras de doença valvar reumática, em que o risco de endocardite infecciosa é eminente. A escassez científica fez deste tema o objetivo deste estudo: investigar a condição clínica periodontal de gestantes portadoras de cardiopatia valvar, identificando agentes periodontopatógenos nas amostras coletadas de saliva, sulco/bolsa periodontal, Para tanto, foram estudadas 52 gestantes cardiopatas (GC) e 70 gestantes não-cardiopatas (GNC). A condição periodontal foi avaliada empregando-se profundidade clínica de sondagem (PCS), nível clínico de inserção (NCI), linha esmalte cemento/margem gengival (LEC/MG), índice de sangramento (IS) e índice de placa bacteriana (IP). As seguintes médias foram obtidas para os parâmetros periodontais avaliados: PCS: 1.52 (GC) e 1.45 (GNC); NCI: 1.13 (GC) e 1.02 (GNC); LEC/MG: 0.41 (GC) e 0.40 (GNC); IS: 7.34 (GC) e 6.27 (GNC) e IP: 12.19 (GC) e 13.48 (GNC). Não houve diferença entre os grupos para o NCI (p= 0,612). A presença da Porphyromonas gingivalis na saliva foi maior (p= 0,007) no GNC, porém não houve diferença nas amostras de sulco/bolsa periodontal.Microorganisms of the oral cavity are known to cause systemic diseases, spread through sanguine current. Different factors, including the presence of periodontal disease, influencing the risk of oral bacteremia could cause infectious endocarditis for Streptococcus viridans. Nevertheless, the maintenance of the oral health is extremely important in pregnant women with rheumatic valvar disease, in which the risk of infectious endocarditis is eminent. The aim of this study was to investigate the clinical periodontal condition of pregnant women with valvar disease and to identify the presence of Porphyromonas gingivalis in saliva and subgingival samples. For these purposes, we studied 52 pregnant with valvar disease (GC) and 70 healthy pregnant women (GNC). The following periodontal parameters were evaluated: probing depth (PCS), clinical attachment level (NCI), gingival margin location (LEC/MG), bleeding on probing (IS) and plaque index (IP). The following mean periodontal parameters were obtained: PCS: 1.52 (GC) e 1.45 (GNC); NCI: 1.13 (GC) e 1.02 (GNC); LEC/MG: 0.41 (GC) e 0.40 (GNC); IS: 7.34 (GC) e 6.27 (GNC) e IP: 12.19 (GC) e 13.48 (GNC). There was no statistical difference for NCI among the groups. There was no difference between periodontal clinical conditions in pregnant women with valvar disease and healthy pregnant women. The presence of the Porphyromonas gingivalis in saliva samples of healthy pregnant women is statistically higher than in pregnant woman with valvar disease; however, there was no difference in periodontal samples
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Müller, Regina Elizabeth. "Estudo longitudinal de pacientes portadores de cardiopatia reumática no Rio de Janeiro." Instituto Fernandes Figueira, 2008. https://www.arca.fiocruz.br/handle/icict/3579.
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Previous issue date: 2008Fundação Oswaldo Cruz. Instituto Fernandes Figueira. Departamento de Ensino. Programa de Pós-Graduação em Saúde da Criança e da Mulher. Rio de Janeiro, RJ, Brasil
Objetivo: avaliar a evolução clínica, morbidade e mortalidade de crianças e adolescentes portadores de cardiopatia reumática em acompanhamento ambulatorial num centro terciário. Material e Métodos: estudo descritivo observacional longitudinal de base hospitalar. Foi realizada análise de prontuários de pacientes com 3-18 anos, acompanhados por no mínimo 2 anos no ambulatório do Instituto Nacional de Cardiologia no Rio de Janeiro. O diagnóstico foi confirmado pelos critérios de Jones e/ou exame ecocardiográfico com lesão reumática típica mitral e/ou aórtica. Banco de dados foi elaborado com o programa ACCESS 2000, e a análise estatística realizada com o programa EPI-INFO 2000. Foi considerado significativo o valor de α- 0,05. Resultados:139 prontuários foram incluídos no estudo. A mediana da idade no início do seguimento foi de 11 anos, 52,6% eram do sexo feminino. Quanto à forma de apresentação clínica 45,3% estavam no primeiro surto, 14,4% em recidiva e 40,3% na fase crônica. A mediana de idade dos pacientes crônicos e em recidiva era superior aos pacientes do primeiro surto de febre reumática (p-0,0001). O tempo médio de seguimento foi de 9,9 anos (2-21 anos). A lesão valvar predominante foi a insuficiência mitral (82,7%), seguida da insuficiência aórtica (55,9%) e da insuficiência mitro-aórtica em 45,3% dos casos. Houve redução importante dos percentuais de lesões valvares graves - tanto mitrais como aórticas - ao final do seguimento.Recidivas foram evidenciadas em 32,3%. Pacientes com profilaxia irregular ou sem profilaxia apresentaram a média do número total de surtos (2,4 surtos por paciente) superior a do grupo em profilaxia regular (1,4 surtos por paciente), com diferença entre os grupos estatisticamente significante (p-0,0009).A mortalidade foi de 4,3% (n=6) Todos os pacientes que evoluíram para óbito eram portadores de próteses valvares. O abandono de tratamento foi de 10,8%, sendo que 1,4% desses pacienteseram portadores de próteses mecânicas (n-=2). Procedimentos intervencionistas foram realizados em 45,3% dos pacientes - valvuloplastia por cateter balão em 2,9% e cirurgia cardíaca valvar em 42,4%. Reoperação foi necessária em 8,6% (2ª cirurgia) e 2,8% (3ª cirurgia). O procedimento mais realizado foi o implante de prótese mecânica mitral (31,3%), seguido por prótese mecânica aórtica (20,9%) e plastia mitral (18,6%). A endocardite infecciosa foi evidenciada em 8,6%, sendo a endocardite de prótese em 3,6%, responsável por 50% da mortalidade desta amostra, com letalidade de 25%. Outrascausas de mortalidade incluíram estenose grave de prótese biológica (n=1), estenose grave de prótese mecânica (n=1) e trombose de prótese biológica (n=1).
Objective: to investigate the outcome, mortality and morbidity of children and adolescents with rheumatic heart disease followed up in an outpatient care unit of a terciarie center. Methods– descriptive longitudinal observational study of an hospitalar based population. Medical file of patients – 3 to18 years old - with rheumatic heart disease, followed-up for at least 2 years from in the outpatient care unit of the National Cardiology Institute (InstitutoNacional de Cardiologia) in Rio de Janeiro were reviewed. Diagnosis were confirmed through medical file register of the revised Jones criteria for rheumatic fever and/or Doppler echocardiographic report of typical chronic mitral or aortic lesions. Database program ACCESS 2000, statistical analysis was performed using EPI-INFO 2000 software, with significant αvalue 0,05. Results–139 medical files were reviewed. Median age at the first visit to the service was 11 years, 52,5% were female. At the first exam, 45,3% presented with acute rheumatic fever- first attack, 14,4% recurrence; while 40,3% had chronic valvular lesions. Median age of the chronic and recurrent group was greater than median age of the first attack group (p-0,0001). Mean follow-up time was 9,9 years (2 to 21 years). Mitral regurgitation was the most common valvular lesion (82,7%), followed by aortic regurgitation (55,9%) and combined mitral and aortic regurgitation (45,3%). There was a significant percent decrease in severe valvular lesions - both mitral and aortic – at the end of follow-up period. Recurrences were present in 32,3% of cases. There was a significant difference (p-0,0009) between the mean rate of the total number of attacks of patients under irregular or no prophylaxis (2,4 attacks / patient) compared with patients under regular prophylaxis (1,4 attacks / patient). Mortality rate were 4,3% (n=6). All these patients that died had prosthesis. 10,8% were lost of follow-up - 1,4% of these patients had mechanical prostheses (n=2). 45,4% underwent valve procedures: 2,9% balloon dilatation and 42,4% valve surgery. Reoperation wererequired by 8,6% (2 nd surgery) and rereoperation by 2,8% (3 rd surgery). The most common surgical procedure was mitral valve replacement with mechanical prosthesesimplantation (31,3%), followed by aortic valve replacement with mechanical prostheses implantation (20,9%) and mitral valve repair (18,6%). A total of 8,6% presented with endocarditis - 3,6% had prosthetic valve endocarditis, that accounted for 50% mortality of this group, and for a letality rate of 25%.Another causes of death included severe bioprosthesis stenosis (n=1), severe mechanical prosthesis stenosis (n=1) and bioprosthesis valve trombosis (n=1).
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Aguiar, André Andrade de. "Avaliação da microbiota bucal em pacientes sob uso crônico de penicilina G benzatina." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/5/5131/tde-24092009-171538/.
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A Febre Reumática, complicação tardia de uma infecção de orofaringe causada pelo Streptococcus pyogenes (estreptococo -hemolítico do grupo A de Lancefield), tem como conseqüência a Cardiopatia Reumática, explicada pelo mimetismo molecular entre proteínas cardíacas humanas e a associação de proteínas e carboidratos da membrana do S. pyogenes. A profilaxia secundária com a PGB 1.200.000 UI IM propõe-se a evitar novos surtos, sendo administrada em intervalos de vinte e um dias nos países com alto índice de estreptococcia. A lesão valvar predispõe à Endocardite Infecciosa, que resulta de bacteriemias causadas por focos infecciosos de origem bucal em cerca de 40% dos casos. Os Streptococcus Viridans constituem o grupo mais comumente encontrado nas Endocardites Infecciosas, em especial os Streptococcus sanguinis e Streptococcus oralis. O efeito do uso crônico da PGB não foi estudado com especificidade para essa microbiota. Assim, foi avaliada, qualitativa e quantitativamente, a microbiota bucal de 100 pacientes, aos 7 e 21 dias, após profilaxia secundária para a Febre Reumática com a PGB 1.200.000 UI IM e comparada com a de 100 pacientes portadores de doença arterial coronariana sem antecedentes de Febre Reumática. As espécies avaliadas foram divididas em S. sanguinis, S. oralis e outras espécies de Streptococcus Viridans Foram coletadas amostras de saliva pela mastigação de goma de parafina e transportadas em meio VMGA II S. As culturas foram semeadas em ágar Columbia CNA com 5% de sangue desfibrinado puro de carneiro com acréscimo de penicilina G. e incubadas a 35ºC em estufa de CO2 por 72 horas. As colônias sugestivas de Streptococcus foram submetidas a testes bioquímicos para confirmação de gênero e espécie. A concentração inibitória mínima foi determinada pelo método Etest e interpretada segundo os padrões do Clinical and Laboratory Standards Institute. Não houve diferença quanto à presença do S. sanguinis nos grupos estudados (P=0,40). O S. oralis prevaleceu aos 7 dias de PGB em relação ao grupo controle (P=0,01). Quanto à identificação de outras espécies, houve maior número de cepas nos pacientes do grupo controle quando comparados aos do grupo de estudo aos 7 e 21 dias de PGB (P<0,001). Os números de UFC/ml de S. sanguinis, S. oralis e de outras espécies foram comparados entre os grupos e não houve diferença entre eles (P=0,96; P=0,60 e P=0,77; respectivamente). Quanto às CIM do S. sanguinis e do S. oralis, não houve diferença entre os grupos (P=0,79 e P=0,13; respectivamente). Todos os testes estatísticos foram realizados em um nível de significância de 5%. Concluiu-se que o S. oralis prevaleceu aos 7 dias de PGB 1.200.000 UI IM; os Streptococcus Viridans de outras espécies prevaleceram no grupo controle; o número de UFC/mL de saliva não diferiu nos grupos estudados, a susceptibilidade dos S. sanguinis e S. oralis à penicilina G não foi alterada pela ação da PGB 1.200.000 UI IM a cada 21 dias e, por fim, a PGB não provocou reações de hipersensibilidade em nenhum paciente do estudoRheumatic fever is the result of a Streptococcus pyogenes (group A -hemolytic Streptococcus) infection of the upper respiratory tract. Rheumatic heart disease is a rheumatic fever consequence and is elucidated by the molecular mimicry between human cardiac proteins and group A streptococcal proteins and carbohydrates association. The secondary prophylaxis with 1,200,000 U BPG every three weeks is used for prevention of recurrent rheumatic fever in developing countries. Valvar defects are a risk for infective endocarditis which is resulted of bacteriemia caused for oral infectious focuses in 40% of cases. Viridans streptococci are the predominant group recovered in infective endocarditis, specially Streptococcus sanguinis and Streptococcus oralis. The effect of chronic BPG wasnt studied with specificity to these pathogens yet. Therefore, the oral microbiota was evaluated, qualitatively and quantitatively, at 7 and 21 days after secondary prophylaxis with BPG to rheumatic fever (study group), in a hundred patients and in comparison to another hundred patients with coronary heart disease who never acquired rheumatic fever (control group). The species evaluated were divided in S. sanguinis, S. oralis and another Streptococcus species. It was collected samples of chewing-stimulated saliva (1ml) and transported in VMGA II S medium. The samples were cultured in pure and with penicillin G 5% sheep blood Columbia ágar (CNA), incubated for 72 hours in an atmosphere containing 5% CO2 at 35ºC. The strains that were suggestive to Streptococcus were identified by biochemical tests to confirm bacteria species and genus. Minimal inhibitory concentration was determined by Etest method and interpreted in accordance to Clinical and Laboratory Standards Institute. The results showed that there was no difference in S. sanguinis presence in all groups (P=0.40). S. oralis prevailed in 7 days BPG group in comparison to control group (P=0.01). The control group showed the highest number of others species in comparison to 7 and 21 days BPG (P<0.001). CFU/ml numbers of S. sanguinis, S. oralis and other species strains were compared in 7 and 21 days BPG to control group and there was no difference among themselves (P=0.96, P=0.60 and P=0.77; respectively). There was no difference in S. sanguinis and S. oralis MICs among the study and control groups (P=0.79 and P=0.13). All statistic tests were done at 5% significance level. It was concluded that S. oralis prevailed in 7 days BPG group in comparison to control group; other species of Viridans streptococci prevailed in control group. The number of CFU/mL did not differ in both studied groups; the penicillin susceptibility of S. sanguinis and S. oralis did not change by BPG every three weeks and, by the end, it was not observed hypersensitivity reactions to penicillin in neither of the patients of this study
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BOUVET-BOUVIER, ANNE. "Les streptocoques deficients : ultrastructure, taxonomie, pouvoir pathogene experimental." Paris 7, 1987. http://www.theses.fr/1987PA077196.
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Müller, Regina Elizabeth. "Cardiopatia reumática com lesão valvar em crianças e adolescentes: fatores associados ao tempo até a terapêutica cirúrgica." Instituto Nacional de Saúde da Mulher, da Criança e do Adolescente Fernandes Figueira, 2011. https://www.arca.fiocruz.br/handle/icict/8042.
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Previous issue date: 2011Fundação Oswaldo Cruz. Instituto Nacional de Saúde da Mulher, da Criança e do Adolescente Fernandes Figueira. Rio de Janeiro, RJ, Brasil.
Introdução: A cardiopatia reumática persiste como a principal doença cardiovascular adquirida em crianças e adultos jovens em todo o mundo, sendo responsável por altas taxas de morbimortalidade e evoluindo com frequência para a necessidade de cirurgia cardíaca valvar em pacientes na fase aguda ou crônica da doença. Objetivo: Estimar os fatores associados e o tempo desde o diagnóstico até a cirurgia cardíaca valvar em crianças e adolescentes portadores de cardiopatia reumática, em um centro cardiológico de referência terciária no Rio de Janeiro. Material e Métodos: estudo observacional longitudinal de base hospitalar, utilizando metodologia de análise de sobrevivência, para estimativa do tempo até a cirurgia, e modelo de regressão de Cox, para avaliar as razões de risco associadas segundo as covariáveis. A coorte foi composta por pacientes com 3 a 20 anos, cadastrados no Instituto Nacional de Cardiologia no Rio de Janeiro entre julho de 1986 e junho de 2006 e acompanhados até setembro de 2011. O diagnóstico da lesão valvar foi confirmado pelo exame Doppler-ecocardiográfico. As covariáveis, avaliadas no início do acompanhamento, foram reunidas em três dimensões: sociodemográfica (sexo, grupo etário, cor da pele, região de moradia e década do diagnóstico); clínica (apresentação clínica, classe funcional, número de surtos anteriores, profilaxia secundária, endocardite infecciosa e fibrilação atrial); e ecocardiográfica (lesão valvar por tipo e gravidade; diâmetro do átrio esquerdo, diâmetro sistólico do ventrículo esquerdo, função ventricular esquerda, hipertensão arterial pulmonar, e ruptura de cordoalha mitral). O banco de dados foi elaborado com o programa ACCESS 2000 e a análise estatística foi realizada pelo programa R versão 2.13.1. Foi considerado significativo o valor de - 0,05. Resultados: a coorte foi composta por 348 pacientes, 58% do sexo feminino, com idade mediana ao cadastro de 12,5 anos, e de 21,5 anos ao final do acompanhamento. O tempo médio de seguimento foi de 9,0 anos (2-21 anos). O evento cirurgia cardíaca ocorreu em 39% da amostra, com tempo mediano até a cirurgia de 22,3 anos. Na análise univariada todas as covariáveis das três dimensões (socioedemográfica, clínica e ecocardiográfica) apresentaram significância estatística e risco para realização de cirurgia cardíaca (hazard ratio>1), com exceção apenas da covariável região de moradia (p>0,5). Na análise multivariada, o modelo final incluiu as variáveis: década do diagnóstico, classe funcional, número de surtos anteriores, endocardite infecciosa, lesão valvar por tipo e gravidade, diâmetro do átrio esquerdo, diâmetro sistólico do ventrículo esquerdo e ruptura de cordoalha mitral. Conclusões: A realização da cirurgia cardíaca em pacientes com cardiopatia reumática está associada a fatores sociodemográficos, clínicos e ecocardiográficos.
Introduction: Rheumatic heart disease remains as the most common acquired heart disease in children and young adults all over the world, being responsible for high mortality and morbidity rates and often demanding valve surgery in the acute or chronic phase of the disease. Objective: To estimate the time from diagnosis until valve operation and the associated factors in children and young adults with rheumatic heart disease followed up in a tertiary center for cardiovascular care in Rio de Janeiro. Methods – It is a longitudinal observational study of a hospital based population, using survival analysis methodology for time estimation and Cox regression model for hazard risk evaluation of associated variables. Cohort was composed by 3 to 20 years old patients, registered in the National Institute of Cardiology (Instituto Nacional de Cardiologia), in Rio de Janeiro, between July 1986 and June 2006, and followed up until September 2011. Valve disease diagnosis was confirmed through Doppler echocardiography examination. Variables were evaluated at the patient´s first visit and separated in three dimensions: socio demographic (gender, age group, skin color, residence region, decade of diagnosis); clinic (disease status at presentation, functional class, number of previous rheumatic episodes, secondary prophylaxis, infectious endocarditis, atrial fibrillation); echocardiographic (valve lesion and severity, left atrium diameter, systolic left ventricle diameter, left ventricle function, pulmonary hypertension, rupture of mitral chordae). The database wasbased on the program ACCESS 2000 and statistical analysis was performed using the R Program version 2.13.1. For statistical analysis was considered as significant values for value 0.05. Results – 348 patients were included in the cohort, 58% female. Median age at the register was 12.5 years, and 21.5 years at the end of follow up. Median follow-up time was 9.0 years (2 to 21 years). 39% underwent valve operation and the median time until surgery was 22.3 years. In the univariate analysis all the variables from the three dimensions (socio demographic, clinic and echocardiographic) presented statistical significance as hazard risk in predicting valve operation (hazard ratio>1), with only one exception, that was residence region (p>0.5). In the multivariate analysis the final model included the following variables: decade of diagnosis, functional class, number of anterior rheumatic episodes, infectious endocarditis, valve lesion and severity, left atrium diameter, systolic left ventricle diameter and rupture of mitral chordate. Conclusions: Valve surgery in patients with rheumatic heart disease is associated with socio demographic, clinic and echocardiographic factors.
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Casero, Cañas Ramón. "Left ventricle functional analysis in 2D+t contrast echocardiography within an atlas-based deformable template model framework." Thesis, University of Oxford, 2008. http://ora.ox.ac.uk/objects/uuid:b17b3670-551d-4549-8f10-d977295c1857.
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This biomedical engineering thesis explores the opportunities and challenges of 2D+t contrast echocardiography for left ventricle functional analysis, both clinically and within a computer vision atlas-based deformable template model framework. A database was created for the experiments in this thesis, with 21 studies of contrast Dobutamine Stress Echo, in all 4 principal planes. The database includes clinical variables, human expert hand-traced myocardial contours and visual scoring. First the problem is studied from a clinical perspective. Quantification of endocardial global and local function using standard measures shows expected values and agreement with human expert visual scoring, but the results are less reliable for myocardial thickening. Next, the problem of segmenting the endocardium with a computer is posed in a standard landmark and atlas-based deformable template model framework. The underlying assumption is that these models can emulate human experts in terms of integrating previous knowledge about the anatomy and physiology with three sources of information from the image: texture, geometry and kinetics. Probabilistic atlases of contrast echocardiography are computed, while noting from histograms at selected anatomical locations that modelling texture with just mean intensity values may be too naive. Intensity analysis together with the clinical results above suggest that lack of external boundary definition may preclude this imaging technique for appropriate measuring of myocardial thickening, while endocardial boundary definition is appropriate for evaluation of wall motion. Geometry is presented in a Principal Component Analysis (PCA) context, highlighting issues about Gaussianity, the correlation and covariance matrices with respect to physiology, and analysing different measures of dimensionality. A popular extension of deformable models ---Active Appearance Models (AAMs)--- is then studied in depth. Contrary to common wisdom, it is contended that using a PCA texture space instead of a fixed atlas is detrimental to segmentation, and that PCA models are not convenient for texture modelling. To integrate kinetics, a novel spatio-temporal model of cardiac contours is proposed. The new explicit model does not require frame interpolation, and it is compared to previous implicit models in terms of approximation error when the shape vector changes from frame to frame or remains constant throughout the cardiac cycle. Finally, the 2D+t atlas-based deformable model segmentation problem is formulated and solved with a gradient descent approach. Experiments using the similarity transformation suggest that segmentation of the whole cardiac volume outperforms segmentation of individual frames. A relatively new approach ---the inverse compositional algorithm--- is shown to decrease running times of the classic Lucas-Kanade algorithm by a factor of 20 to 25, to values that are within real-time processing reach.
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Wu, Vivian. "Recruitment, single ventricular palliation, and complex biventricular repair for patients with Hypoplastic Left Heart Syndrome." Thesis, 2019. https://hdl.handle.net/2144/36723.
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BACKGROUND: Hypoplastic Left Heart Syndrome is a congenital birth defect that is defined by underdevelopment of the left heart during pregnancy. This is especially dangerous as the left heart holds the systemic flow of blood- the oxygenated blood. Not enough oxygen throughout the whole body causes cyanosis, which symptoms include bluish discoloration of the skin or mucous membrane due to low oxygen saturation. Single Ventricle Palliation followed by Biventricular Conversion is the most common surgical procedural pathway to correct this defect. The goal is to convert from a single ventricle circulation during single ventricle palliation to biventricular circulation via biventricular conversion, which is the normal heart anatomy. Single Ventricle Pallation consists of three stages: Stage 1 Norwood Procedure, Bidirectional Glenn, and Fontan. Biventricular Conversion can be performed after any of the three stages. In addition, further compromise of the left ventricle includes other factors such as a thickening of fibroblast-like cells on the endocardial layer called endocardial fibroelastosis. Therefore, additional surgical procedures, also known as recruitment procedures, combat these problems. It is critical to find a correlation between a specific procedure and post surgery success in left ventricle growth and function for these patients.
OBJECTIVES: Patients with Hypoplastic Left Heart Syndrome at Boston Children’s Hospital have undergone single ventricle palliation with some patients proceeding to biventricular conversion. This study aimed to study the palliation stages individually and recruitment procedures (specifically endocardial fibroelastosis resection) on the effect of left ventricle growth.
METHODS: Patients with Hypoplastic Left Heart Syndrome were studied retrospectively (before 2014) and prospectively (after 2014 until December 1, 2018). Single Ventricle Palliation and Biventricular Conversion were analyzed via descriptional analysis with evidence of left ventricular growth measured by left ventricular end diastolic volume and respective z-scores. Z-scores were used to standardize end diastolic volume values across variability in age, weight, and height.
RESULTS: A total of 55 patients underwent single ventricle palliation and 39 ended with biventricular circulation via biventricular conversion. Overall, there was a 9.29 ml increase in end diastolic volume between Bidirectional Glenn and Fontan and a 0.795 increase in end diastolic volume z-score between Fontan and Biventricular Conversion. Next, those who did not have recruitment procedures experienced a 135.6%, 48.8%, and 0% growth at Stage 1, Bidirectional Glenn, and Fontan, respectively, before directly proceeding to biventricular conversion. Those with recruitment experienced a 44.5%, 90.4%, and 83.0% growth at Stage 1, Bidirectional Glenn, and Fontan, respectively, before directly proceeding to biventricular conversion. Finally, there was a 50.2% and 62.3% in left ventricular growth at Bidirectional Glenn and Fontan, respectively, after endocardial fibroelastosis resection compared to only a 6.9% growth at Stage 1.
CONCLUSION: Bidirectional Glenn was the most effective palliation stage for left ventricular growth. Recruitment in patients at this stage was associated with growth that exceeds those who did not have recruitment. This stage also best demonstrates the ability and success of growing a small ventricle to be adequate for biventricular conversion. Left ventricular growth at Fontan circulation holds promising results that are a point of interest for more studies. Endocardial Fibroelastosis resection is more effective on left ventricular growth at Bidirectional Glenn and Fontan compared to Stage 1.
Books on the topic "Endocardial disease"
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Endothelial function and dysfunction: Improving cardiovascular patient care and outcomes in the twenty-first century. 2nd ed. Arvada, Co: 21st Century Press Books for Doctors, 2004.
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D’Amato, Gaetano, Guillermo Luxán, and José Luis de la Pompa. Defining cardiac domains from the inside: NOTCH in endocardial–myocardial interactions. Edited by José Maria Pérez-Pomares, Robert G. Kelly, Maurice van den Hoff, José Luis de la Pompa, David Sedmera, Cristina Basso, and Deborah Henderson. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780198757269.003.0011.
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In this chapter we illustrate the signalling interactions of the endocardium with the other cardiac tissues to coordinate cardiac development. First, we describe the developmental origins of the endocardium. Then we focus on the Notch pathway because of its unique signalling activity in the endocardium, and briefly describe the elements of this signalling mechanism and the key cardiogenic processes that require endocardial Notch signalling: patterning of the early embryonic endocardium into prospective territories for valves and ventricular chambers, early valve formation, ventricular trabeculation, and compaction. Finally, we discuss how Notch dysfunction in the endocardium results in cardiac structural malformations that can lead to congenital heart disease.
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MacGrogan, Donal, José Maria Pérez-Pomares, Bill Chaudhry, José Luis de la Pompa, and Deborah J. Henderson. From cushions to leaflets: morphogenesis of cardiac atrioventricular valves. Edited by José Maria Pérez-Pomares, Robert G. Kelly, Maurice van den Hoff, José Luis de la Pompa, David Sedmera, Cristina Basso, and Deborah Henderson. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780198757269.003.0017.
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At the looping stage of heart development, tissue patterning of myocardium and endocardium at the atrioventricular (AV) junction defines a morphogenic field competent to form valves that initially appear as protrusions of proteoglycan-rich extracellular matrix (ECM) called endocardial cushions (ECs) which are cellularized by an endocardial-mesenchymal transition (EMT). Cellular proliferation results in fusion of the major AV mesenchymal cushions and AV septation, whereas smaller cushions receive a supply from epicardially derived cells. These various sources of mesenchyme precursors give rise to most of the valve structures, leaflets, annuli, and supporting tension apparatus. During valve leaflet maturation, the ECM matrix accumulates collagen and elastin and assembles into a thin flexible fibrous structure, which is remarkably tough. Valve development is regulated by the cross-talk between developmental signalling pathways. Pathogenic mutations in a subset of developmentally important genes have been linked to valve disease, suggesting that developmental defects may underlie valve disease in adulthood.
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Thuny, Franck, and Didier Raoult. Pathophysiology and causes of endocarditis. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780199600830.003.0160.
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Endocarditis is defined as an inflammation of the endocardial surface of the heart. This may include heart valves, mural endocardium or the endocardium that covers implanted material, such as prosthetic valves, pacemaker/defibrillator leads and catheters. Infective and non-infective-related causes must be distinguished. In most cases, the inflammation is related to a bacterial or fungal infection with oral streptococci, group D streptococci, staphylococci and enterococci accounting for 85% of episodes. Infective endocarditis (IE) is a serious disease with an incidence ranging from 30 to 100 episodes/million patient-years. From various portals of entry (e.g. oral, digestive, cutaneous) and a subsequent bacteraemia, pathogens can adhere and colonize intracardiac foreign material or onto previously damaged endocardium due to numerous complex processes based on a unique host–pathogen interaction. Rarely, endocarditis can be related to non-infective causes, such as immunological or neoplastic. Mortality is high, with more than one-third dying within a year of diagnosis from complications such as acute heart failure or emboli. This disease still remains a diagnostic challenge with many cases being identified and subsequently treated too late. Diagnosis of IE usually relies on the association between an infectious syndrome and recent endocardial involvement. Blood cultures and echocardiography are the main diagnostic procedures, but are negative in almost 30% of cases, requiring the use of more sophisticated techniques. Computed tomography, magnetic resonance imaging and positron emission tomography are promising imaging modalities. Improved understanding of its pathophysiology and the development of relevant diagnostic strategies enables accelerated identification and treatment, and thus an improved prognosis.
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Török, M. Estée, Fiona J. Cooke, and Ed Moran. Cardiovascular infections. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780199671328.003.0015.
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This chapter covers infective endocarditis characterized by infections of the endocardial surface of the heart, intravascular catheter-related infections, endovascular infections, myocarditis (which is an inflammatory disease of the myocardium), pericarditis (which is an inflammation of the pericardium), and mediastinitis (which is an infection involving the mediastinal structures).
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Schreiber, Benjamin E., Gregory J. Keir, and J. Gerry Coghlan. Cardiopulmonary investigations. Oxford University Press, 2013. http://dx.doi.org/10.1093/med/9780199642489.003.0073.
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Cardiopulmonary investigations are growing in number and complexity, but are crucial in management of patients with multisystem disease. Patients with rheumatological conditions are frequently at increased risk of a wide range of cardiac and pulmonary complications. Cardiac complications include accelerated atherosclerosis, valvular dysfunction, and pericardial, myocardial and endocardial involvement. Pulmonary complications include airways disease, interstitial lung disease, pulmonary embolism, and pulmonary hypertension. We aim to present some practical frameworks for selecting the appropriate initial tests in different clinical situations. This chapter is in three sections. In the first section, we review the recommended investigations for common clinical symptoms: shortness of breath, cough, chest pain, and syncope. In the second section, we review the importance of cardiopulmonary investigations in specific rheumatological conditions. In the third section we review the unique characteristics of the cardiopulmonary tests, stressing their particular strengths and weaknesses and associated complications.
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Schreiber, Benjamin E., Gregory J. Keir, and J. Gerry Coghlan. Cardiopulmonary investigations. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780199642489.003.0073_update_001.
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Cardiopulmonary investigations are growing in number and complexity, but are crucial in management of patients with multisystem disease. Patients with rheumatological conditions are frequently at increased risk of a wide range of cardiac and pulmonary complications. Cardiac complications include accelerated atherosclerosis, valvular dysfunction, and pericardial, myocardial and endocardial involvement. Pulmonary complications include airways disease, interstitial lung disease, pulmonary embolism, and pulmonary hypertension. We aim to present some practical frameworks for selecting the appropriate initial tests in different clinical situations. This chapter is in three sections. In the first section, we review the recommended investigations for common clinical symptoms: shortness of breath, cough, chest pain, and syncope. In the second section, we review the importance of cardiopulmonary investigations in specific rheumatological conditions. In the third section we review the unique characteristics of the cardiopulmonary tests, stressing their particular strengths and weaknesses and associated complications.
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De Bono, Christopher, Magali Théveniau-Ruissy, and Robert G. Kelly. Cardiac fields and myocardial cell lineages. Edited by José Maria Pérez-Pomares, Robert G. Kelly, Maurice van den Hoff, José Luis de la Pompa, David Sedmera, Cristina Basso, and Deborah Henderson. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780198757269.003.0004.
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We focus on the origin of myocardial cells in the first and second heart fields in splanchnic mesoderm in the early embryo. Genetic lineage tracing using Cre recombinase activated conditional reporter genes has made a major contribution to our understanding of cardiac progenitor cells and will be discussed together with other experimental approaches to analysing cell lineages at the clonal level. Interactions between myocardial, epicardial and endocardial lineages are essential for coordinated function and homeostasis of the normal heart. Perturbation of heart field development and myocardial lineage contributions to the heart through developmental or acquired pathologies results in and modulates the progression of cardiac disease. Understanding the origin of myocardial lineages during embryonic development and how they converge to generate an integrated heart is thus a major biomedical objective. Furthermore, reactivation of developmental programmes is likely to be of major importance in strategies aimed at repair of the damaged heart.
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Grisoli, Dominique, and Didier Raoult. Prevention and treatment of endocarditis. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780199600830.003.0161.
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Initially always lethal, the prognosis of infective endocarditis (IE) has been revolutionized by antibacterial therapy and valve surgery. Nevertheless, it remains one of the deadliest infectious diseases, with ≥30% of patients dying within a year of diagnosis. Its incidence has also remained stable at 25–50 cases per million per year, and results predominantly from a combination of bacteraemia and a predisposing cardiac condition, including endocardial lesions and/or intracardiac foreign material. While antibiotic prophylaxis is recommended by various learned societies to cover healthcare procedures with the potential of causing bacteraemia in at-risk patients, there is no evidence to support this strategy. Even though the benefits are hypothetical, national guidelines should still be followed to avoid medico-legal issues. General preventive measures, such as education of clinicians and at-risk patients appear to be more crucial. Invasive procedures, especially intravenous catheterization, should be kept to the minimum possible. The severity of IE mandates a multidisciplinary and standardized approach to treatment, with involvement of dedicated surgeons within specialist centres. Standardized antibiotic protocols have produced dramatic reductions in hospital and 1-year mortality in reference centres. Most deaths now result from complications that constitute definite surgical indications, so optimization of surgical management and avoidance of delay will clearly improve prognosis. This disease has now entered an ‘early surgery’ era, with a more aggressive surgical approach showing promising results. Conditions such as septic shock, sudden death, and vancomycin-resistant staphylococcal endocarditis still constitute therapeutic and research challenges, and justify an important role for specialist centres.
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Clinical lecture upon a case of mitral valve disease: Delivered at the General Hospital, Feb. 26th, 1890. [S.l: s.n., 1985.
Find full textBook chapters on the topic "Endocardial disease"
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Inai, Kei, Alexander K. C. Leung, Jouni Uitto, Gerhard-Paul Diller, Michael A. Gatzoulis, John-John B. Schnog, Victor E. A. Gerdes, et al. "Endocardial Cushion Defect." In Encyclopedia of Molecular Mechanisms of Disease, 576. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-29676-8_7015.
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Sugi, Yukiko, Bin Zhou, Kei Inai, Yuji Mishina, and Jessica L. Burnside. "The Role of Cell Autonomous Signaling by BMP in Endocardial Cushion Cells in AV Valvuloseptal Morphogenesis." In Etiology and Morphogenesis of Congenital Heart Disease, 171–73. Tokyo: Springer Japan, 2016. http://dx.doi.org/10.1007/978-4-431-54628-3_22.
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Mukhopadhyay, Anirban, Zhen Qian, Suchendra Bhandarkar, Tianming Liu, and Szilard Voros. "Shape Analysis of the Left Ventricular Endocardial Surface and Its Application in Detecting Coronary Artery Disease." In Functional Imaging and Modeling of the Heart, 275–83. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-21028-0_34.
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Kamisago, Mitsuhiro, Joachim P. Schmitt, Dennis McNamara, Christine Seidman, and J. G. Seidman. "Sarcomere Protein Gene Mutations and Inherited Heart Disease: A β Cardiac Myosin Heavy Chain Mutation Causing Endocardial Fibroelastosis and Heart Failure." In Novartis Foundation Symposia, 176–95. Chichester, UK: John Wiley & Sons, Ltd, 2008. http://dx.doi.org/10.1002/0470029331.ch11.
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Cooper, R. S. "Endocardial Cushion Defects: Embryology,Anatomy and Pathophysiology." In Pathophysiology, Evaluation and Management of Valvular Heart Diseases, Vol. 2, 118–26. Basel: KARGER, 2004. http://dx.doi.org/10.1159/000079791.
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Kartha, Chandrasekharan C. "Role of Endocardium and Epicardium in Generation of Cardiomyocytes." In Cardiomyocytes in Health and Disease, 55–61. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-85536-9_5.
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Oakley, Celia M. "Diseases of the Myocardium, Pericardium, and Endocardium." In Developments in Cardiovascular Medicine, 293–329. Boston, MA: Springer US, 1993. http://dx.doi.org/10.1007/978-1-4615-3516-4_14.
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Oakley, Celia M. "Diseases of the Myocardium, Pericardium, and Endocardium." In Developments in Cardiovascular Medicine, 197–224. Boston, MA: Springer US, 1987. http://dx.doi.org/10.1007/978-1-4684-9925-4_12.
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Qu, Xianghu, and H. Scott Baldwin. "The Endocardium as a Master Regulator of Ventricular Trabeculation." In Molecular Mechanism of Congenital Heart Disease and Pulmonary Hypertension, 331–37. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-1185-1_52.
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Eliseev, Oleg M. "Diseases of the Myocardium, Endocardium, and Pericardium and Uncommon Heart Diseases in Pregnancy." In Cardiovascular Diseases and Pregnancy, 71–82. Berlin, Heidelberg: Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-642-73605-6_7.
Full textConference papers on the topic "Endocardial disease"
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Hunt, Bram, Eugene Kwan, Mark McMillan, Derek Dosdall, Rob MacLeod, and Ravi Ranjan. "Deep Learning Based Prediction of Atrial Fibrillation Disease Progression with Endocardial Electrograms in a Canine Model." In 2020 Computing in Cardiology Conference. Computing in Cardiology, 2020. http://dx.doi.org/10.22489/cinc.2020.291.
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Masithulela, Fulufhelo. "Analysis of Passive Filling With Fibrotic Myocardial Infarction." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-50003.
Full textAbstract:
Cardiovascular diseases account for one third of all deaths worldwide, more than 33% of which are related to ischemic heart disease, involving a myocardial infarction (MI). Following myocardial infarction, the injured region and ventricle undergo structural changes which are thought to be caused by elevated stresses and reduction of strains in the infarcted wall. The fibrotic phase is defined as the period when the amount of new collagen and number of fibroblasts rapidly increase in the infarcted tissue. We studied through finite element analysis the mechanics of the infarcted and remodeling rat heart during diastolic filling. Biventricular geometries of healthy and infarcted rat hearts reconstructed from magnetic resonance images were imported in Abaqus©. The passive myocardium was modelled as a nearly incompressible, hyperelastic, transversely isotropic material represented by the strain energy function W = ½C(eQ − 1) with Q = bfE112 + bt(E222 + E332 + E322) + bfs(E122 + E212 + E132 + E312). Material parameters were obtained from literature [1]. As boundary conditions, the circumferential and longitudinal displacements at the base were set to zero. The radial displacements at the base were left free. A linearly increasing pressure from 0 to 3.80 kPa and 0.86 kPa, respectively, was applied to the endocardial surfaces of left and right ventricle. Average radial, circumferential and longitudinal strains during passive filling were −0.331, 0.135, 0.042 and −0.250, −0.078 and 0.046 for the healthy heart and the infarcted heart, respectively. The average radial, circumferential and longitudinal stresses were −1.196 kPa, 3.87 kPa in the healthy heart and 0.424 kPa and −1.90 kPa, 8.74 kPa and 1.69 kPa in the infarcted heart. The strains were considerable lower in the infarcted heart compared to the health heart whereas stresses were higher in the presence of an infarct compared to the healthy case. The results of this study indicate the feasibility of the models developed for a more comprehensive assessment of mechanics of the infarcted ventricle including extension to account for cardiac contraction.
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Montero, Sergio Rodríguez, Consuelo Ramos Giráldez, PLAZA NAHIA, and Jose Luis Marenco. "AB1173 ENDOCARDIAL LESIONS IN PATIENTS WITH RHEUMATIC DISEASES: CASE REVIEW." In Annual European Congress of Rheumatology, EULAR 2019, Madrid, 12–15 June 2019. BMJ Publishing Group Ltd and European League Against Rheumatism, 2019. http://dx.doi.org/10.1136/annrheumdis-2019-eular.6217.
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Masithulela, Fulufhelo. "The Effect of Over-Loaded Right Ventricle During Passive Filling in Rat Heart: A Biventricular Finite Element Model." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-50004.
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The physiological basis of the right ventricle diastolic function is not well studied. In most heart failure, heart transplantation remains the first choice with survival ranges between 40% and 50%. It is known that heart transplantation lacks donors and therefore, there is a need to search for new surgical techniques for heart failure prevention. This study utilized the finite elment method to study the structural behavior of heart wall under severe pressures. In this study the effect RV filling during over-pressurised RV using bi-ventricular model has been studied using finite element modeling (FEM). Cardiovascular disease (CVD) is the leading cause of death in low-income and middle-income countries. The right ventricle (RV) dysfunction is understood to have an impact on the performance of the left ventricle (LV) but the mechanisms remain poorly understood. Finite strain analyses of bi-ventricular model provide important information on the heart function. The passive myocardium was modelled as a nearly incompressible, hyperelastic, transversely isotropic material. Biventricular geometries of healthy and infarcted rat hearts reconstructed from magnetic resonance images were imported in Abaqus©. In simulating the passive filling of the healthy condition of the rat heart, the inner walls of the LV and RV the pressures of 4.8 kPa and 0.0098 kPa were applied respectively. The average circumferential strain was found to be 0.138 and 0.100 on the endocardium of the over-pressured and healthy model respectively. The high stresses and strains on the over-loaded model were observed.