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Relevant bibliographies by topics / Postoperative complications/diagnosis

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Academic literature on the topic 'Postoperative complications/diagnosis'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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Journal articles on the topic "Postoperative complications/diagnosis"

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Gore, Richard M., Jonathan W. Berlin, Vahid Yaghmai, Uday Mehta, Geraldine M. Newmark, and Gary G. Ghahremani. "CT diagnosis of postoperative abdominal complications." Seminars in Ultrasound, CT and MRI 25, no. 3 (June 2004): 207–21. http://dx.doi.org/10.1053/j.sult.2004.03.003.

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Kirshtein, Boris, Sergey Domchik, Solly Mizrahi, and Leonid Lantsberg. "Laparoscopic diagnosis and treatment of postoperative complications." American Journal of Surgery 197, no. 1 (January 2009): 19–23. http://dx.doi.org/10.1016/j.amjsurg.2007.10.019.

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Stojakov, Dejan, Predrag Sabljak, Bratislav Spica, Dejan Velickovic, Vladimir Sljukic, Brankica Nenadic, Ljubica Tomasevic, Marija Ðukanovic, Aleksandra Ðuric-Stefanovic, and Predrag Pesko. "Perioperative complications of esophagectomy - prevention, diagnosis and management." Acta chirurgica Iugoslavica 64, no. 1 (2017): 27–38. http://dx.doi.org/10.2298/aci1701027s.

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Esophageal resection with reconstruction is complex surgical procedure with high rate of postoperative morbidity, with decreasing mortality rate during last decades, particularly in high-volume hospitals. Numerous preoperative, intraoperative and postoperative factors have contribute to incidence and type of complications. Intraoperative haemorrhage and tracheobronchial lesions could be avoid by good surgical judgement and operative technique. Pulmonary complications are often, with multifactorial etiology, and they are the main cause of postoperative mortality after esophagectomy. Dehiscence of esophageal anastomosis could be fatal, and only high index of suspicion and early diagnosis lead to successful treatment. In majority of such cases conservative measures are successful, however, conduit necrosis is indication for surgical reoperation. Vocal cord palsy due to intraoperative injury of recurrent laryngeal nerves is not rare and increases pulmonary complications rate. New onset of arrhythmia could be associate with other surgical complications. Postesophagectomy chylothorax is life-threatening complication due to rapid development of immunosuppression and septic complications, and early ligation of thoracic duct is often mandatory. Intrathoracic herniation of intrabdominal viscera is rare, and ischemic spinal cord lesions are very rare after esophagectomy. Majority of perioperative complications could be prevented or solved, decreasing mortality rate of esophagectomy.

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Fantoni, Caterina, Carmen Erra, Eduardo Marcos Fernandez Marquez, Andrea Ortensi, Andrea Faiola, Daniele Coraci, Giulia Piccinini, and Luca Padua. "Ultrasound Diagnosis of Postoperative Complications of Nerve Repair." World Neurosurgery 115 (July 2018): 320–23. http://dx.doi.org/10.1016/j.wneu.2018.04.179.

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Schöffel, U., and E. M. Farthmann. "Diagnosis and Management of Postoperative Intra-Abdominal Complications." Digestive Surgery 12, no. 6 (1995): 308–13. http://dx.doi.org/10.1159/000172379.

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Ehlers, Niels. "Penetrating keratoplasty. Diagnosis and treatment of postoperative complications." Acta Ophthalmologica Scandinavica 79, no. 1 (February 2001): 103. http://dx.doi.org/10.1034/j.1600-0420.2001.790130-2.x.

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Qu, Yikun, Shiyan Ren, Chunmin Li, Songyi Qian, and Peng Liu. "Management of Postoperative Complications Following Splenectomy." International Surgery 98, no. 1 (February 1, 2013): 55–60. http://dx.doi.org/10.9738/cc63.1.

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Abstract Complications of post-splenectomy, especially intra-abdominal hemorrhage can be fatal, with delayed or inadequate treatment having a high mortality rate. The objective of this study was to investigate the cause, prompt diagnosis, and outcome of the fatal complications after splenectomy with a focus on early diagnosis and management of hemorrhage after splenectomy. The medical files of patients who underwent splenectomy between January 1990 and March 2011 were reviewed retrospectively. The cause, characteristics, management, and outcome in patients with post-splenectomy hemorrhage were analyzed. Fourteen of 604 patients (1.19%) undergoing splenectomy had intraperitoneal hemorrhage: reoperation was performed in 13 patients, and 3 patients died after reoperation, giving the hospital a mortality rate of 21.43%; whereas, 590 of 604 patients (98%) had no hemorrhage following splenectomy, and the mortality rate (0.34%) in this group was significantly lower (P < 0.001). The complications following splenectomy, including pneumonia pancreatitis, gastric fistula, gastric flatulence, and thrombocytosis, in patients with postoperative hemorrhage were significantly higher than those without hemorrhage (P < 0.001). According to the reasons for splenectomy, 14 patients with post-splenectomy hemorrhage were grouped into two groups: splenic trauma (n = 9, group I) and portal hypertension (n = 5, group II). The median interval between splenectomy and diagnosis of hemorrhage was 15.5 hours (range, 7.25–19.5 hours). No differences were found between groups I and II in terms of incidence of postoperative hemorrhage, time of hemorrhage after splenectomy, volume of hemorrhage, and mortality of hemorrhage, except transfusion. Intra-abdominal hemorrhage after splenectomy is associated with higher hospital mortality rate and complications. Early massive intraperitoneal hemorrhage is often preceded by earlier sentinel bleeding; careful clinical inquiry and ultrasonography are the mainstays of early diagnosis.

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Gitas, Georgios, L. Proppe, S. Baum, M. Kruggel, A. Rody, D. Tsolakidis, D. Zouzoulas, et al. "A risk factor analysis of complications after surgery for vulvar cancer." Archives of Gynecology and Obstetrics 304, no. 2 (January 9, 2021): 511–19. http://dx.doi.org/10.1007/s00404-020-05949-w.

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Abstract Introduction Despite the less frequent use of surgery in patients with vulvar cancer, the high rates of postoperative complications are still a matter of concern. The aim of the present study was to identify risk factors that influence postoperative complications rates in vulvar cancer and identify specific clinical parameters that may influence their incidence. Materials Patients who underwent curative-intent surgery for squamous cell carcinoma of the vulva from 2003 to 2018 were selected. All patient characteristics were analyzed as risk factors for the development of postoperative lymphocele, lymphedema, and wound dehiscence. The patients were followed up for 2 years postoperatively. Results The investigation comprised 121 patients, of whom 18.1% developed wound dehiscence, 17.7% a lymphocele, and 20.4% lymphedema. We found no significant evidence of an association between patient’s characteristics and postoperative complications. The depth of tumor invasion and the appearance of lymph-node metastasis were significantly associated with postoperative complications. Free resection margins of 5 mm or more were associated with a reduced risk of postoperative complications compared to resection margins less than 5 mm. No complications were encountered after sentinel node biopsy (SNB). Complication rates were associated with inguinofemoral lymphadenectomy, but not with the extent of lymphadenectomy. The development of a lymphocele or wound dehiscence may be correlated with the development of long-term lymphedema. Conclusion FIGO stage at diagnosis influences the risk of postoperative complications. The use of SNB minimized postoperative complications. Correlations between the free microscopic resection margin distance and the risk of postoperative wound dehiscence must be investigated further.

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Negrón, María E., Herman W. Barkema, Kevin Rioux, Jeroen De Buck, Sylvia Checkley, Marie-Claude Proulx, Alexandra Frolkis, et al. "Clostridium difficileInfection Worsens the Prognosis of Ulcerative Colitis." Canadian Journal of Gastroenterology and Hepatology 28, no. 7 (2014): 373–80. http://dx.doi.org/10.1155/2014/914303.

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BACKGROUND: The impact ofClostridium difficileinfections among ulcerative colitis (UC) patients is well characterized. However, there is little knowledge regarding the association betweenC difficileinfections and postoperative complications among UC patients.OBJECTIVE: To determine whetherC difficileinfection is associated with undergoing an emergent colectomy and experiencing postoperative complications.METHODS: The present population-based case-control study identified UC patients admitted to Calgary Health Zone hospitals for a flare between 2000 and 2009.C difficiletoxin tests ordered in hospital or 90 days before hospital admission were provided by Calgary Laboratory Services (Calgary, Alberta). Hospital records were reviewed to confirm diagnoses and to extract clinical data. Multivariate logistic regression analyses were performed among individuals tested forC difficileto examine the association betweenC difficileinfection and emergent colectomy and diagnosis of any postoperative complications and, secondarily, an infectious postoperative complication. Estimates were presented as adjusted ORs with 95% CIs.RESULTS:C difficilewas tested in 278 (58%) UC patients and 6.1% were positive.C difficileinfection was associated with an increased risk for emergent colectomy (adjusted OR 3.39 [95% CI 1.02 to 11.23]). Additionally, a preoperative diagnosis ofC difficilewas significantly associated with the development of postoperative infectious complications (OR 4.76 [95% CI 1.10 to 20.63]).CONCLUSION:C difficilediagnosis worsened the prognosis of UC by increasing the risk of colectomy and postoperative infectious complications following colectomy. Future studies are needed to explore whether early detection and aggressive management ofC difficileinfection will improve UC outcomes.

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Conti, Matthew S., Oleksandr Savenkov, and Scott J. Ellis. "Association of Peripheral Vascular Disease With Complications After Total Ankle Arthroplasty." Foot & Ankle Orthopaedics 4, no. 2 (April 1, 2019): 247301141984337. http://dx.doi.org/10.1177/2473011419843379.

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Background: Despite limited evidence, peripheral vascular disease is often cited as a contraindication for total ankle arthroplasty. The purpose of our study was to identify whether peripheral vascular disease in patients undergoing total ankle arthroplasty increased the rate of infection, postoperative irrigation and debridement, or failure of the implant. Methods: The PearlDiver Database was used to identify Medicare patients who underwent a total ankle arthroplasty from 2005 to 2014. These data were then analyzed for postoperative infections within 90 days, subsequent irrigation and debridements, and failure of total ankle arthroplasties. A diagnosis of preoperative peripheral vascular disease only included those patients who had peripheral vascular disease as an ICD-9 diagnosis code and underwent a preoperative lower extremity angiogram prior to total ankle arthroplasty. Medical comorbidities were identified using ICD-9 diagnosis codes. Three multivariable logistic regression models were then developed in order to identify risk factors associated with postoperative infections and failure after total ankle arthroplasty. Results: A total of 10 698 Medicare patients who underwent a primary total ankle arthroplasty were identified. There were 334 patients who had a postoperative infection within 90 days of their total ankle arthroplasty, and 95 of those patients required an irrigation and debridement. Regression analysis demonstrated that patients with peripheral vascular disease had the greatest risk of developing a postoperative infection within 90 days (OR 2.85, P < .01), requiring an irrigation and debridement postoperatively (OR 4.87, P < .001), and having a total ankle arthroplasty failure at any time point postoperatively (OR 2.51, P < .001). Conclusions: Our study suggests that preoperative peripheral vascular disease is a significant risk factor for an acute postoperative infection, postoperative irrigation and debridement, and failure of the implant in Medicare patients undergoing a total ankle arthroplasty. Level of Evidence: Level III, therapeutic.

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Dissertations / Theses on the topic "Postoperative complications/diagnosis"

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Dahlin, Lars-Göran. "Perioperative myocardial infarction in cardiac surgery : a diagnostic dilemma : a clinical study with special reference to diagnostic pitfalls and novel approaches to identify permanent myocardical injury /." Linköping : Univ, 2001. http://www.bibl.liu.se/liupubl/disp/disp2001/med668s.pdf.

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Matielo, Marcelo Fernando. "Incidência de trombose venosa profunda pós-operatória no membro amputado de pacientes com doença arterial oclusiva periférica." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/5/5132/tde-29012009-165529/.

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Introdução: Pacientes submetidos à amputação de membro inferior por doença arterial obstrutiva periférica (DAOP) estão em risco para o desenvolvimento de trombose venosa profunda (TVP). Há poucos estudos na literatura sobre a incidência no pós-operatório precoce e quanto aos fatores de risco no desenvolvimento da TVP no membro amputado. Objetivo: A finalidade deste estudo é avaliar, de modo prospectivo, a incidência de trombose venosa profunda pós-operatória em até 35 dias, em pacientes submetidos à amputação de membro inferior por doença arterial obstrutiva periférica, sua relação com comorbidades e com óbito. Método: De setembro de 2004 a março de 2006, foram estudados 56 pacientes (29 homens; média de idade 67,25 anos) submetidos a 62 amputações (36 transtibiais e 26 transfemorais), utilizando-se eco-Doppler no pré-operatório e aproximadamente no 7º e 31° dia de pós-operatório. Resultado: Houve TVP em 16 (25,8%) membros amputados, sendo 10 casos em amputações transfemorais e 6 casos em transtibiais. A incidência cumulativa no período até 35 dias foi de 28% (Kaplan-Meier). Houve diferença significativa na incidência de TVP entre amputações transfemorais (37,5%) e transtibiais (21,2%), p = 0,04. Outro fator de risco para TVP foi idade igual ou superior a 70 anos (48,9 vs 16,8%, p=0,021). Houve 01 caso de embolia pulmonar sintomática não fatal em paciente com TVP já diagnosticada. Não houve relação entre outras comorbidades e TVP. A trombose venosa no membro amputado não influenciou na taxa de óbito que foi de 9,7%. Conclusões: A incidência de TVP no pós-operatório recente (até 35 dias) foi elevada principalmente em pacientes com idade igual e superior a 70 anos e nas amputações transfemorais. Os pacientes com DAOP submetidos a grandes amputações devem ser considerados de alto risco para TVP, mesmo após alta hospitalar.
Introduction: Patients undergoing amputation of the lower limb due to Peripheral Arterial Disease (PAD) are at risk for developing Deep Venous Thrombosis (DVT). There are few studies in the research literature on the incidence of DVT during the early postoperative period and the risk factors for the development of DVT in the amputation stump. Objective: The goal of this prospective study was to evaluate the incidence of deep venous thrombosis during the first 35 postoperative days in patients who had undergone amputation of the lower extremity due to PAD, and its relation to comorbidities and death. Method: From September 2004 to March 2006, fifty-six patients (29 men, mean age 67.25 years) underwent 62 amputations (36 below knee amputation BKA and 26 above knee amputation- AKA), and echo- Doppler scanning on preoperative, and approximately the seventh and 31st postoperative days. Results: DVT occurred in 16 (25.8%) of the amputated extremities, (10 AKA and 06 BKA). The cumulative incidence in the 35 day postoperative period was 28% (Kaplan-Meier). There was a significant difference in the incidence of DVT between AKA (37.5%) and BKA (21.2%), p = .04. Another DVT risk factor was age equal to or above 70 years (48.9 vs. 16.8%, p= .021). There was one case of symptomatic non-fatal pulmonary embolism in a patient already diagnosed with DVT. There was no relation between other comorbidities and DVT. Venous Thrombosis in the amputation stump did not influence the mortality rate which was 9.7%. Conclusions: The incidence of DVT in the early post-operative period (up to 35 days) was elevated mainly in patients 70 years of age or older and in AKA. Patients with PAD who have recently undergone major amputations should be considered at high risk for DVT, even after hospital discharge.

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Lapidus, Lasse. "Thromboembolism following orthopaedic surgery : outcome and diagnostic procedures after prophylaxis in lower limb injuries /." Stockholm, 2007. http://diss.kib.ki.se/2007/978-91-7357-111-1/.

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Ribeiro, Juliana Caldas. "Avaliação da hemodinâmica encefálica em pacientes de alto risco submetidos a cirurgia cardíaca: papel do balão de contrapulsação intra-aórtico." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/5/5131/tde-06042017-085222/.

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Introdução: A cirurgia cardíaca resulta em taxa considerável de complicações neurológicas, incluindo delirium, disfunção cognitiva e acidente vascular cerebral isquêmico. Supõe que a fisiopatologia envolva embolia, aterotrombose, hipofluxo, redução do débito cardíaco e alterações da autorregulação cerebral. O balão de contrapulsação intra-aórtico (BIA) é um dispositivo de assistência circulatória comumente utilizado no perioperatório de pacientes de alto risco com o objetivo de otimização do débito cardíaco e da perfusão coronária. Apesar do benefício hemodinâmico do BIA, não é conhecido seu efeito na hemodinâmica encefálica. Objetivo: Avaliar os efeitos do BIA na hemodinâmica encefálica em pacientes de alto risco submetido a cirurgia cardíaca com circulação extracorpórea (CEC). Métodos: Trata-se de um subestudo do estudo clínico prospectivo e randomizado \"Balão de contra-pulsação intra-aórtico eletivo em pacientes de alto risco submetidos a cirurgia cardíaca\", realizado no Instituto do coração do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo entre 2014 e 2016. Dos 181 pacientes incluídos no estudo randomizado, 67 pacientes foram incluídos no subestudo. Os pacientes eram adultos, submetidos a cirurgia cardíaca de revascularização miocárdica (RM) com fração de ejeção menor ou igual a 40% e/ou EuroScore maior ou igual a 6. Os mesmos foram randomizados para uso do BIA logo após a indução anestésica ou para grupo controle. A velocidade de fluxo sanguíneo cerebral (VFSC) pelo ultrassom Doppler transcraniano e a pressão arterial (PA) pelo Finometer foram continuamente gravados por 5 minutos antes da cirurgia (T1), 24h após (T2) e 7 dias após (T3). O índice de autorregulação (ARI) foi estimado através da resposta ao degrau da VFSC a mudanças na PA, derivados da análise da função de transferência. As seguintes complicações clínicas neurológicas foram avaliadas: delirium, disfunção cognitiva e acidente vascular cerebral isquêmico. Resultados: Dos pacientes incluídos no estudo, 34 foram alocados para a estratégia de uso profilático do balão intra-aórtico e 33 para a estratégia controle. Não houve diferenças significativas entre os grupos BIA e controle respectivamente, nos três tempos de avaliação, em relação ao ARI (T1 - 5,5 ± 1,9 vs 5,7 ± 1,7; T2 - 4,0 ± 1,9 vs 4,1 ± 1,6; T3 - 5,7 ± 2,0 vs 5,7 ± 1,6, P= 0,978) e em relação à VFSC (T1 - 57,3 ± 19,4 vs 59,3 ± 11,8; T2 - 74,0 ± 21,6 vs 74,7 ± 17,5; T3 - 71,1 ± 21,3 vs 68,1 ± 15,1; P=0,952). O grupo BIA e o grupo controle apresentaram incidência semelhante de complicações neurológicas (delirium na unidade de terapia intensiva - 26,5% vs 24,2%, P=0,834, acidente vascular cerebral isquêmico - 3,0% vs 2,9%, P=1,00, e declínio cognitivo pós-operatório através das escalas Mini Mental State Examination MMSE - 16,7% vs 40,7%; P= 0,073 e Avaliação Cognitiva Montreal MoCA - 79,16% vs 81,5%; P= 1,000). Conclusões: O uso profilático do BIA em pacientes de alto risco submetidos à cirurgia de revascularização do miocárdio não altera a hemodinâmica encefálica e não está associado ao aumento de complicações neurológicas como delirium, declínio cognitivo e acidente vascular cerebral isquêmico
Introduction: Cardiac surgery is associated with a high incidence of neurologic complications, such as delirium, cognitive decline and stroke. The pathophysiology probably involves embolism, thrombosis, decreased cardiac output and abnormalities in cerebral autoregulation. The intraaortic balloon pump (IABP) is an assist device commonly in high-risk patients undergoing cardiac surgery aiming to increase the cardiac output and to improve the coronary perfusion. However, the effect of the IABP on the cerebral hemodynamic is unknown. Objectives: To assess the effect of IABP on cerebral hemodynamics in high-risk patients undergoing cardiac surgery with cardio-pulmonary bypass (CPB). Methods: This is a substudy of the randomized controlled trial \"Intraaortic Balloon Counterpulsation in Patients Undergoing Cardiac Surgery (IABCS trial)\", performed at the Heart Institute/University of Sao Paulo, from 2014 to 2016. Of the 181 patients included in the IABCS, 67 were included if they were submitted to cardiac surgery and if they had one of these two criteria: left ventricular ejection fraction equal or lower than 40% and/or EuroSCORE equal or higher than 6. Patients were allocated to the strategy of prohylatic IABP after anesthesia induction or to control. Cerebral blood flow velocity (CBFV) through transcranial Doppler and blood pressure (BP) through Finometer or intra-arterial line were continuously recorded over 5 minutes preoperatively (T1), after 24h (T2) and 7 days after surgery (T3). Autoregulation index (ARI) was estimated from the CBFV response to a step change in BP derived by transfer function analysis. The following complications neurologic were evaluated: delirium, cognitive decline and stroke. Results: Of the included patients, 34 were allocated to the IABP group and 33 to control group. There were no significant differences between the IABP and the control respectively in the following parameters: ARI (T1 - 5.5 ± 1.9 vs 5.7 ± 1.7; T2 - 4.0 ± 1.9 vs 4.1 ± 1.6; T3 - 5.7 ± 2.0 vs 5.7 ± 1.6, P= 0.978), CBFV (T1 - 57.3 ± 19.4 vs 59.3 ± 11.8; T2 - 74.0 ± 21.6 vs 74.7 ± 17.5; T3 - 71.1 ± 21.3 vs 68.1 ± 15.1; P=0.952). Both groups (IABP and control) had similar incidence of neurological complications (delirium - 26.5% vs 24.2%, P=0.834, stroke - 3.0% vs 2.9%, P=1.00, and cognitive decline through the scales Mini Mental State Examination MMSE - 16,7% vs 40,7%; P= 0.073 and Montreal Cognitive Assessment MoCA - 79.16% vs 81.5%; P= 1.000). Conclusions: The prophylactic use of IABP in high-risk patients undergoing cardiac surgery does not change the cerebral hemodynamic and is not associated with higher incidence of neurologic complications such as delirium, cognitive decline and stroke

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Júnior, José Eduardo Afonso. "Análise regional da dinâmica ventilatória em transplante pulmonar com tomografia de impedância elétrica." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/5/5150/tde-22092010-121107/.

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INTRODUÇÃO: A monitorização da ventilação em transplante pulmonar depende de medidas estáticas e globais a partir de testes de função pulmonar e tomografia computadorizada, o que não é suficiente para detectar alterações regionais no parênquima pulmonar, que podem ser relevantes na avaliação de diferentes causas de comprometimento funcional. Tomografia de Impedância Elétrica (TIE) é uma técnica não-invasiva e livre de radiação com base na medição do potencial elétrico na superfície da parede torácica. O comportamento dinâmico e as informações quantitativas extraídas de imagens da TIE tornam possível avaliar as diferenças regionais na ventilação pulmonar. OBJETIVOS: Avaliar a ventilação regional com a TIE, em pacientes submetidos a transplante pulmonar unilateral ou bilateral e avaliar as variações ventilatórias em várias posições diferentes. MÉTODOS: A TIE foi realizada em 18 pacientes transplantados de pulmão (7 pacientes com transplante de pulmão bilateral, 6 pacientes com transplante unilateral por enfisema e 5 pacientes com transplante unilateral por fibrose), nas posições: sentada, supina, prona e decúbitos lateral direito e esquerdo. Os pacientes foram orientados a realizar 30 ciclos de ventilação espontânea e, em seguida, uma manobra de capacidade vital lenta. RESULTADOS: A comparação entre os grupos mostrou que houve diferença entre porcentagem de ventilação referente ao melhor pulmão (nos unilaterais o melhor pulmão era o transplantado e nos bilaterais o pulmão com maior ventilação na posição sentada). Na ventilação espontânea os transplantes unilaterais por enfisema e fibrose tinham 79% e 83% da ventilação gerada pelo pulmão transplantado, enquanto para os bilaterais o melhor pulmão contribuía com 57% da ventilação. Houve redução significativa na desproporção da ventilação quando comparada a ventilação espontânea com a capacidade vital (p = 0,001). Na ventilação espontânea houve variação da ventilação de acordo com a posição analisada, o que não aconteceu na capacidade vital. A medida do ângulo de fase foi próxima a zero para os bilaterais, negativa para os unilaterais por enfisema e positiva para os unilaterais por fibrose, mostrando que nos bilaterais havia sincronia entre o esvaziamento dos dois pulmões e nos grupos unilaterais havia dissincronia (diferentes constantes de tempo). CONCLUSÃO: A TIE pode ser uma ferramenta útil para o estudo pacientes transplantados de pulmão, evidenciando diferenças ocultas na dinâmica ventilatória entre os pulmões nativos e os de pulmões transplantados. Como esperado, os pacientes de transplante de pulmão unilateral exibiram uma ventilação muito mais heterogênea regionalmente. O decúbito lateral e a ventilação espontânea amplificam tais diferenças.
INTRODUCTION: Ventilation monitoring in lung transplantation is still depending on static and global measurements from lung function testing and computed tomography, what is not enough to detect regional changes in lung parenchyma, which may be relevant in evaluating different causes of functional impairment. Electrical Impedance Tomography (EIT) is a noninvasive and radiation-free technique based on the measurement of electric potentials at the chest wall surface. The dynamic behavior and the quantitative information extracted from EIT images make it possible to assess regional differences in lung ventilation. OBJECTIVES: To assess regional ventilation with EIT, in patients who underwent single or bilateral lung transplantation and to evaluate ventilatory variations in several different body positions. METHODS: We performed the EIT in 18 lung transplanted patients (7 bilateral lung transplantation patients, 6 single lung transplantation patients with emphysema and 5 single lung transplantation patients with fibrosis), in seated, supine, right, left and ventral positions. Patients were asked to perform 30 cycles of spontaneous ventilation and then a slow vital capacity maneuver. RESULTS: The comparison between groups showed that there was difference between the percentage of ventilation related to the best lung (the best lung in single lung patients was the transplanted lung and in the bilateral patients was the lung with best ventilation in the sitting position). The ventilation generated by the transplanted lung on spontaneous ventilation in single lung patients for emphysema and fibrosis were 79% and 83% respectively, whereas for the bilateral group better lung contributed with 57% of ventilation. Significant reduction in the disparity of ventilation occurred comparing the spontaneous ventilation and the vital capacity maneuver (p = 0.001). Ventilation changed in accordance with the position analyzed in spontaneous ventilation, what did not happen in vital capacity. The measurement of phase angle was close to zero for the bilateral, negative for single lung emphysema group and positive for single lung fibrosis group, showing that we had synchronicity between the emptying of both lungs in the bilateral group and disynchronicity in the single lung groups (different time constants). CONCLUSION: EIT can be a useful tool to study lung transplant patients, evidencing occult differences in lung dynamics between the native and the transplanted lung. As expected, single lung transplant patients exhibited a much more disturbed regional ventilation. The lateral decubitus and the spontaneous ventilation amplified such differences

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Parkman, Sharon E. "The infant undergoing cardiac surgery : can we predict length of stay and presence of complications from age, weight, diagnoses, and type of of surgery? /." Thesis, Connect to this title online; UW restricted, 1999. http://hdl.handle.net/1773/7215.

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Fujimoto, Shuhei. "Effect of combination of pre- and postoperative pulmonary rehabilitation on onset of postoperative pneumonia: a retrospective cohort study based on data from the diagnosis procedure combination database in Japan." Kyoto University, 2019. http://hdl.handle.net/2433/242656.

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Birolini, Dario Vianna. "Experiência clínica de cirurgiões brasileiros com a retenção inadvertida de corpos estranhos após procedimentos operatórios." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/5/5132/tde-20022014-090259/.

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Introdução: Por se tratar de uma falha médica com potencial implicação jurídica, a retenção inadvertida de corpos estranhos continua sendo subnotificada, o que dificulta o seu estudo e a sua compreensão. Como resultado, ainda se enfrenta um problema recorrente. Este estudo explorou a experiência de cirurgiões brasileiros em relação à retenção de corpos estranhos, analisando as suas características e consequências. Métodos: Foi enviado um questionário de preenchimento voluntário, confidencial e anônimo, por correio eletrônico, aos cirurgiões membros de nove sociedades brasileiras, durante um período de três meses. As questões analisaram a vivência dos entrevistados com os corpos estranhos, seus tipos, manifestações clínicas, diagnóstico, fatores de risco ou de proteção e implicações jurídicas. Resultados: Das 2872 submissões elegíveis, 43% dos médicos teriam deixado e 73% retirado corpos estranhos em uma ou mais ocasiões. Destes, 90% eram têxteis, 78% foram descobertos no primeiro ano e 14% eram assintomáticos. A maioria das retenções ocorreu no início da carreira profissional, em procedimentos eletivos (54%) e rotineiros (85%), porém complexos (57%). Emergência, ausência de contagem, pacientes obesos, fadiga do cirurgião e problemas relacionados às equipes cirúrgicas e aos processos foram tidos como os principais facilitadores. Os pacientes foram alertados sobre a retenção em 46% das vezes e, destes, 26% processaram os médicos ou a instituição. Conclusões: A maioria das retenções inadvertidas ocorreu nos primeiros anos de atividade profissional, em intervenções eletivas e rotineiras. Os corpos estranhos foram diagnosticados nos primeiros meses de pósoperatório, tendo sido os têxteis os mais frequentes. Os fatores de risco referidos pelos entrevistados são comuns em seus locais de trabalho, como emergências e equipes cirúrgicas incompletas, por exemplo. Menos de metade dos operados ficou ciente do evento adverso, sendo que a minoria acabou processando as instituições e/ou cirurgiões envolvidos
Background: Although there is an international mobilization to deal with unintentionally retained foreign bodies (RFB), since it is medical malpractice with potential legal implications, the cases are underreported, hindering the understanding and study of the problem. As a result, we face a recurrent and poorly understood event. This study explored the experience of brazilian surgeons on RFB and analyzed their characteristics and consequences. Study Design: In a three-month period, questionnaire was sent to surgeons members of nine brazilian societies, by electronic mail. Answering the questionnaire was volunteer. Answers were kept confidential and anonymous. The questions explored their experience with foreign bodies, FB types, clinical manifestations, diagnosis, risk and protection factors, and legal implications. Results: In 2872 eligible questionnaires, 43% of the doctors said they had already left FB and 73% had removed FB, in one or more occasions. Of these foreign bodies, 90% were textiles, 78% were discovered in the first year after the surgery and 14% remained asymptomatic. The occurrence of RFBs is more frequent in early professional career, in elective (54%) and routine (85%), but complex (57%) procedures. The main causes were emergency, lack of counting, inadequate work conditions, change of plans during the procedure and obese patients. Patients were alerted about the retention in 46% of the cases, and of these, 26% sued the doctors or the institution. Conclusion: The majority of unintentionally retained foreign bodies occurred at the beginning of the professional career, during routine surgical procedures. In general, foreign bodies caused symptoms and were diagnosed in the first year of the post-operative period. Textiles predominated. Inadequate work conditions were listed as RFB risk factors, as well as emergency surgery, for example. Less than half of the patients were aware of the adverse event and 26% sued the surgeons or the institutions involved in the procedure

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Dubau, Benoît. "Complications postopératoires en chirurgie digestive lourde : intérêt de la tonométrie gastrique." Bordeaux 2, 1998. http://www.theses.fr/1998BOR23071.

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Balzan, Silvio Márcio Pegoraro. "Avaliação de critério pós-operatório de insuficiência hepática como fator prognóstico de mortalidade após hepatectomia: importância da alteração combinada do tempo de protrombina e da bilirrubina sérica." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/5/5154/tde-29012007-170755/.

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INTRODUÇÃO. A definição de insuficiência hepática pós-operatória (IHP) não é ainda padronizada, dificultando a comparação de inovações em procedimentos hepáticos e tornando complexo o uso de possíveis intervenções terapêuticas pós- operatórias em um momento adequado. CASUÍSTICA E MÉTODOS. Entre 1998 e 2002, 775 resecções hepáticas eletivas, dos quais 531 (69%) por doenças malignas e 464 (60%) consistindo em hepatectomias maiores, foram incluídas de maneira prospectiva em um banco de dados. O parênquima hepático não-tumoral foi anormal em 330 pacientes (43%) incluindo esteatose em mais que 30% dos hepatócitos em 107 (14%), fibrose sem cirrose em 237 (43%) e cirrose em 94 (12%). Foi analisado o impacto sobre a mortalidade da ocorrência de tempo de protrombina (TP) menor que 50% e bilirrubina total sérica (BT) maior que 50 µmol/L (3 mg/dl) (critério 50-50) nos dias pós-operatórios (PO) 1, 3, 5 e 7. RESULTADOS. A cinética pós-operatória do TP e da BT foram diferentes. O menor nível de TP foi no primeiro dia pós-operatório (PO) e o pico de BT foi no terceiro dia PO. A tendência ao retorno para valores pré-operatórios destes dois fatores bioquímicos se firmou claramente no quinto DPO. A mortalidade operatória global foi de 3.4% (26 pacientes), incluindo 21 (81%) casos com parênquima não-tumoral anormal e 20 (77%) após uma hepatectomia maior. O índice de mortalidade foi maior em pacientes com TP < 50% ou BT > 50 µmol/L (3 mg/dl) no pós-operatório. A conjunção de TP < 50% e BT > 50 µmol/L (3 mg/dl) no quinto DPO foi potente fator preditivo de mortalide, a qual atingiu 59% quando esta associação ocorreu. CONCLUSÕES. A partir do quinto dia PO, a associação de TP > 50% e BT > 50 µml/L (3 mg/dl) (critério 50-50) foi preditor prático e acurado de índice de mortalidade após hepatectomia. Propõe-se assim este critério como definição de insuficiência hepática pós-operatória.
INTRODUCTION. Definition of postoperative liver failure (PLF) is not standardized, rendering complex the comparison of novelties in liver procedures and also the use of possible postoperative therapeutic interventions in due time. METHODS. Between 1998 and 2002, 775 elective liver resections, whence 531 (69%) were for malignancies and 464 (60%) for major resections, were included in a prospective database. The non- tumorous hepatic parenchima was abnormal in 330 patients (43%) including steatosis > 30% in 107 (14%), non-cirrhotic fibrosis in 237 (43%) and cirrhosis in 94 (12%). The clinical impact of Prothrombin Time (PT) < 50% and Serum Bilirubin (SB) > 50µmol/L (3 mg/dl) (50-50 criteria) on postoperative days (POD) 1, 3, 5 and 7 was analyzed. RESULTS. Kinetic of postoperative PT and SB were different. Lowest PT levels were on POD1 and the peak of SB was on POD 3. The tendency to return to preoperative values of these two biochemical factors was clearly affirmed on POD 5. Operative mortality was 3.4% (26 patients), including 21 (81%) cases with abnormal liver parenchyma and 20 (77%) following major hepatectomies. Mortality rate was increased in patients with PT < 50% or SB > 50µmol/L (3mg/dl). The conjunction of PT < 50% and SB > 50µmol/L (3 mg/dl) on POD 5 was a strong predictive factor of increased mortality, which reached 59%. CONCLUSIONS We found that after postoperative day 5, the association of PT > 50% and SB > 50µml/L (3 mg/dl) (50-50 criteria) was a simple and accurate predictor of mortality after hepatectomy. These results allow us to propose this criteria as a definition of postoperative liver failure.

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Books on the topic "Postoperative complications/diagnosis"

1

Galford, Roberta E. Problems in anesthesiology: Approach to diagnosis. Boston: Little, Brown, 1992.

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L, Wolf Ellen, ed. Radiology of the postoperative GI tract. New York: Springer, 2003.

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E, Marquet Jean F., ed. Surgery and pathology of the middle ear: Proceedings of the International Conference on the Postoperative Evaluation in Middle Ear Surgery, held in Antwerp on June 14-16, 1984. Boston: M. Nijhoff, 1985.

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Jacofsky, David J. Fundamentals of revision hip arthroplasty: Diagnosis, evaluation, and treatment. Thorofare, NJ: SLACK Inc., 2013.

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The failed back syndrome: Etiology and therapy. 2nd ed. New York: Springer-Verlag, 1992.

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Kibler, W. Ben. Pitfalls in the management of common shoulder problems. Rosemont, IL: American Academy of Orthopaedic Surgeons, 2011.

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Belokonev, Vladimir, Sergey Pushkin, Zinaida Kovaleva, Elena Aksenova, Nikolay Abashkin, and Dmitriy Scherbakov. Clinical variants of esophageal injuries, diagnostics and treatment methods. ru: INFRA-M Academic Publishing LLC., 2020. http://dx.doi.org/10.12737/1014664.

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The textbook is devoted to the diagnosis of esophageal injuries and treatment of patients. The article describes the surgical anatomy of the organ, causes of esophageal injuries, classification, diagnostic methods, tactics, describes possible treatment options for patients depending on the clinical picture, technique and volume of operations depending on the developing complications. The paper presents original methods of treatment of the esophagus, methods of management of patients in the postoperative period, treatment of possible complications and their prevention. Meets the requirements of the Federal state educational standards of higher education of the latest generation. For doctors-surgeons, clinical residents, postgraduates, undergraduates and teachers of medical universities.

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Penetrating Keratoplasty: Diagnosis and Treatment of Postoperative Complications. Springer, 2000.

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(Editor), Nadey S. Hakim, and Vassilios E. Papalois (Editor), eds. Surgical Complications: Diagnosis and Treatment. Imperial College Press, 2007.

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1958-, Hakim Nadey S., and Papalois Vassilios E, eds. Surgical complications: Diagnosis and treatment. London: Imperial College Press, 2007.

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Book chapters on the topic "Postoperative complications/diagnosis"

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Gouma, Dick J. "Diagnosis and Treatment of Major Abdominal Complications Is Multidisciplinary Work." In Treatment of Postoperative Complications After Digestive Surgery, 19–25. London: Springer London, 2013. http://dx.doi.org/10.1007/978-1-4471-4354-3_4.

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Higenbottam, T. W., and J. Wallwork. "Postoperative Management, Surgical Complications, Diagnosis and Management of Acute Rejection." In The Transplantation and Replacement of Thoracic Organs, 299–305. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0711-9_38.

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Dancz, Christina, and Anastasiya Shabalova. "Diagnosis and Management of Delayed Postoperative Complications in Gynecology: Neuropathy, Wound Complications, Fistulae, Thromboembolism, Pelvic Organ Prolapse, and Cuff Complications." In Handbook of Gynecology, 755–69. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-17798-4_73.

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Dancz, Christina, and Anastasiya Shabalova. "Diagnosis and Management of Delayed Postoperative Complications in Gynecology: Neuropathy, Wound Complications, Fistulae, Thromboembolism, Pelvic Organ Prolapse, and Cuff Complications." In Handbook of Gynecology, 1–15. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-17002-2_73-1.

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Alotaibi, Manal, Khaled Albazli, Lina Bissar, and Hani Almoallim. "Perioperative Management of Patients with Rheumatic Diseases." In Skills in Rheumatology, 407–17. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-8323-0_18.

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AbstractThe aim of this chapter is to present a simple approach to the assessment of patients with different rheumatologic diseases, especially rheumatoid arthritis (RA), before undergoing orthopedic surgery. Perioperative assessment confirms an early diagnosis of the patient’s medical condition and comorbidities, overall health, and the assessment of the risk factors associated with the proposed interventions. Perioperative assessment allows for proper postoperative management of complications. It can also aid in the management of high-risk drugs used by rheumatologic patients such as disease-modifying antirheumatic drugs (DMARD), antiplatelets, and corticosteroids. The assessment also supports postoperative plans and patient education [1–3].

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Bartels, H., and J. R. Siewert. "Diagnostic Procedure in Postoperative Complications." In Die Chirurgie und ihre Spezialgebiete Eine Symbiose, 130–34. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-95662-1_73.

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Susai, Cynthia, Julie Monteagudo, and Francois I. Luks. "Diagnostic and Management Strategies for Postoperative Complications in Pediatric Appendicitis." In Controversies in Pediatric Appendicitis, 119–31. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-15006-8_13.

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Nosovets, O. K., V. S. Yakymchuk, V. Y. Kotovskyi, E. M. Bairamov, V. G. Paliy, R. Dzierzak, and K. Dassibekov. "Prevention of complications in children in the early postoperative period after surgical treatment of the single ventricle heart." In Information Technology in Medical Diagnostics II, 127–35. London, UK; Boca Raton: CRC Press/Balkema, [2019] | Selected and extended conference papers from Polish, Ukranian and Kazakh scientists.: CRC Press, 2019. http://dx.doi.org/10.1201/9780429057618-16.

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Mezhir, James J., Helmut Schoellnast, Stephen B. Solomon, and Peter J. Allen. "Postoperative complications requiring intervention, diagnosis, and management." In Blumgart's Surgery of the Liver, Pancreas and Biliary Tract, 401–17. Elsevier, 2012. http://dx.doi.org/10.1016/b978-1-4377-1454-8.00025-4.

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Demos, Daniel, and Edward McGough. "Postoperative Management and Complications in Thoracic Surgery." In Thoracic Anesthesia Procedures, 231–50. Oxford University Press, 2021. http://dx.doi.org/10.1093/med/9780197506127.003.0018.

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The goal of this chapter is to provide the necessary framework to manage thoracic surgery patients in the intensive care unit (ICU) during the initial postoperative visit. Thoracic surgery impairs postoperative respiratory function, which can lead to postoperative complications. Complications are commonly associated with specific risk factors such as age, results of preoperative pulmonary function tests, cardiovascular comorbidity, smoking status, and chronic obstructive pulmonary disease. The authors focus on immediate postoperative concerns, including ventilator management and weaning, as well as postoperative hemorrhage. After the patient arrives at the ICU and is immediately assessed, the focus pivots to analgesia and resuscitation with an emphasis on goal-directed fluid management. Last, a basic understanding of common postoperative complications, including diagnosis and management, is paramount to quality ICU care.

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Conference papers on the topic "Postoperative complications/diagnosis"

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Mittal, Sujata. "Cervical cancer management in Rural India: Are we really living in 21st century or need to focus on health education of our doctors." In 16th Annual International Conference RGCON. Thieme Medical and Scientific Publishers Private Ltd., 2016. http://dx.doi.org/10.1055/s-0039-1685408.

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Objectives: To study cases of cervical cancer managed/unmanaged in rural India and to analyze the reasons for poor outcome. Methods: This is a retrospective study of 218 cases of cervical cancers between 2008-2013 with resultant outcome in terms of treatment or absence of treatment in spite of diagnosis. Reasons for not taking the treatment have been analyzed. Also, analysis of 21 cases of simple hysterectomy with resultant complications like VVF, RVF has been done. Indications of surgery, operating surgeon, availability of preoperative/postoperative HPR, slides/blocks, discharge summary and disease status at the time of referral was done. Results: 44% refused to take treatment in spite of stage III diagnosis citing financial constraints, distance to be traveled daily for RT and apathetic attitude of family towards females. 20.65% opted for other hospitals. 29.8% took complete treatment. 80% of females were illiterate and dependent. 9.7% had simple hysterectomy for invasive disease. 95% of simple hysterectomies were performed by general surgeons in private setups resulting in 19% of complications like VVF, RVF. 100% cases of simple Hysterectomy did not have pre-operative biopsy. Only 50% cases had post-operative biopsy report and in none of the cases were slide/blocks available for review as trained pathologists were not available. General surgeons who had performed surgery were neither trained in doing P/V examinations nor aware of staging of cervical cancer. Conclusion: Illiteracy, poverty and absence of implementation of cancer control programs are the major hurdles in control of cervical cancer. The study highlights the absence of Government’s will to control cervical cancer in rural India. It emphasizes on the need of intensive training and health education of gynaecologists and surgeons at district/rural level, lack of which is a primary factor for violation of medical ethics by the doctors.

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Briel, R. C., P. C. Hermann, and P. Doller. "LOW MOLECULAR WEIGHT HEPARIN (FRAGMIN) PROPHYLAXIS IN GYNECOLOGIC SURGERY." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643223.

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In a prospective, randomized study patients undergoing hysterectomy were treated either by the low molecular weight heparin Fragmin or by the combination of unfractionated sodium heparin + dihydroergotamin (HDHE). The dosage in the Fragmin group was 2× 2500 anti Xa-U on day 1 = day of surgery, from day 2-8: 1× 5000 anti Xa-U, in the HDHE-group from day 1-8: 2× 5000 IU heparin + 0.5 mg DHE. 99 patients were randomly allocated to prophylaxis with Fragmin, 101 to HDHE prophylaxis. 95 and 96 respectively were evaluated, the others excluded for different reasons. The 2 groups were comparable for general data and risk factors. Duration of surgery, intraoperative blood loss, transfusion rates and postoperative hemoglobin levels were identical. Blood volumes in subcutaneous and subfascial drainages were slightly but not significantly higher in the Fragmin group. In patients with an additional Marshall-Marchetti-operation, blood volumes in the drainages of the spatium retzii were significantly higher in patients on Fragmin. No differences were observed in the incidence of minor and major wound hematoma. Painful injections and sugillations at the injection sites were more frequently observed in the HDHE-group. The thermographic DeVeTherm test, which was carried out daily for diagnosis of DVT, gave positiv results (= temperature difference 1°C) on one day only in 14 patients of each group. The test was positive on 2 or more consecutive days in 4 patients on Fragmin and 2 patients on HDHE. Phlebography, which was carried out in the latter patients, gave a positive result in 1 patient of each group. Localization of DVT was mainly the lower limb. Plasma anti-Xa activity (S-2222) 4 hrs. after injection of 5000 anti-Xa IU Fragmin was 0.45 IU/ml being 10 fold higher than after HDHE. aPTT was slightly prolonged in both groups, thrombin time and thrombelastogramm gave even more pronounced changes in the Fragmin group. The present data indicate that Fragmin dosage should be further decreased to avoid bleeding complications.

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Ge, Xiaolong, Linna Ye, Qian Cao, and Wei Zhou. "IDDF2020-ABS-0159 A new diagnostic index of skeletal muscle mass for predicting short-term postoperative complications in Crohn’s disease." In Abstracts of the International Digestive Disease Forum (IDDF), 22–23 November 2020, Hong Kong. BMJ Publishing Group Ltd and British Society of Gastroenterology, 2020. http://dx.doi.org/10.1136/gutjnl-2020-iddf.101.

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Ge, Xiaolong, and Wei Zhou. "IDDF2020-ABS-0155 A new diagnostic index of sarcopenia for predicting short-term postoperative complications in patients undergoing surgery for gastric cancer." In Abstracts of the International Digestive Disease Forum (IDDF), 22–23 November 2020, Hong Kong. BMJ Publishing Group Ltd and British Society of Gastroenterology, 2020. http://dx.doi.org/10.1136/gutjnl-2020-iddf.100.

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Stewart, G. J., J. W. Lachman, P. D. Alburger, M. C. Ziskin, C. M. Philips, and K. Jensen. "VENODILATION AND DEVELOPMENT OF DEEP VEIN THROMBOSIS IN TOTAL HIP AND KNEE REPLACEMENT PATIENTS." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643696.

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Postoperative deep vein thromboisis(DVT) is a frequent complication following total hip (THR) or knee (TKR)replacement but no test has been devised to identify specific patientswho will develop DVT. Because conventional prophylaxis does not significantly reduce the incidence of DVT, monitoring is widely used to detect evolving thrombosis. More intense anticoagulation (adjusted dose heparin,two step warfarin) may be effective but requires laboratory tests and carries increased risk of bleeding. Itwould be an economic and medical advantage to restrict prophylaxis and monitoring to patients who will develop DVT. Based on observations in a canine model of THR, we developed andtested a method that shows promise of being able toidentify, intraoperatively, patients who will develop DVT.In the canine model we found characteristic venous lesions (gaping tears through endothelium and basementmembrane, localized to confluences,selectively infiltrated with platelets and leukocytes). Incidence of lesions correlated with intraoperative venodilation, measured by a modified ultrasound scanner. Lesionsmight serve as sites for initiationand anchorage of thrombi. Diagnostic ultrasound was used to monitor cephalic vein diameter in 25 THR patients and 12 TKR patients. In THR patients, 1 of 9 patients with venodilation of 6-16% developed DVT. At 21-57% venodilation 12 of 12 THR patients developed thrombi. In the intermediate range of venodilation (19%,20%), 2 of 4 patients developedDVT. In 12 TKR patients, 10 had venodilation of 0-16% and none developedDVT in the non-operated leg. In patients with 22% and 55% venodilation,one did and one did not develop DVT in the non-operated leg (expectedfrcxn equal distribution between legs in THR patients).DVT in the operated leg did not correlate with venodilation. We suggest that in THR patients substances released at the operative site circulate briefly, causing venous dilation. In TKR patients the tourniquet prevented substances from being circulated, reducing venodilation and DVT in the non-operated leg. Proximitv of surgicalwound to calf veins and tourniquet pressure mav have contributed to DVT in the operated leg.

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