Dissertations / Theses on the topic 'Ulcers – Risk factors – Benin'

Notre travail porte sur tous les cas UB enregistrés entre 1997 et 2003 au Centre Sanitaire Nutritionnel Gbemoten (CSNG) de Zagnanado dans la région du Zou au Bénin. Une base de données a été créée et a permis d’analyser divers aspects de l’UB. Ces analyses ont donné lieu à diverses publications dont les résultats essentiels sont repris ci-dessous.

Une première publication porte sur 1700 cas consécutifs admis au CSNG entre 1997 et 2001. Ces données nous ont permis d’illustrer l’évolution du nombre des cas d’UB au cours des années, par département et par sous-préfecture. Le nombre de patients UB qui se présentent au centre est fonction de différents facteurs comme par exemple l’ouverture d’autres centres de traitement, l’organisation de campagnes d’information sur l’UB mais aussi de changements dans l’environnement. Au niveau des formes de la maladie, nous avons montré que les formes non ulcérées sont aussi fréquentes que les formes ulcérées. La forme de la maladie est liée au délai à consulter le CSNG. Les atteintes osseuses sont fréquentes et sont présentes chez plus de 13% des cas. Au fil des années, le délai à consulter le CSNG ainsi que la durée de l’hospitalisation ont été fortement réduits, passant de 4 mois à 1 mois dans le premier cas et de 9 mois à 1 mois en ce qui concerne l’hospitalisation. Les personnes ressources à cibler lors des campagnes de sensibilisation sur la maladie ont été identifiées. Il s’agit des anciens malades, qui dans 68% des cas, réfèrent les nouveaux malades au CSNG.

Une deuxième publication, portant sur la même période, nous a permis de mettre en évidence pour la première fois des taux d’UB élevés chez les sujets de 60 ans et plus, probablement du fait d’une diminution de leur immunité. Chez les 60 ans et plus, les hommes sont plus à risque de développer un UB que les femmes. Par contre aucune différence dans le risque d’UB en fonction du sexe n’est trouvée chez les moins de 60 ans. Les lésions d’UB prédominent au niveau des membres inférieurs pour tous les groupes d’âge. Du fait de leur petite stature, les enfants ont une répartition des lésions qui touchent tout le corps. Chez les adultes, les femmes présentent plus de lésions que les hommes au niveau de la tête, du cou et du tronc. Les sujets de moins de 15 ans développent souvent des lésions multifocales, associées à des atteintes osseuses. Ces atteintes osseuses constituent les formes graves de la maladie.

Notre troisième publication porte sur le suivi des malades au niveau des villages, entre mars 2000 et février 2001, afin de déterminer les taux de récurrences de l’UB. Le taux de récurrence de la maladie est faible (6.1%) pour un temps de suivi des malades allant jusqu’à 7 ans. La majorité des malades soignés au CSNG étaient en bonne santé. Nous n’avons néanmoins pu retrouver qu’un nombre limité de malades.

Dans notre quatrième publication, nous avons pu mettre en évidence le développement d’un UB sur le site d’une morsure humaine. La surface de la peau du malade a pu être contaminée par M. ulcerans et la morsure (= traumatisme) a occasionné l’entrée de M. ulcerans dans le derme. Une autre explication plausible est que la morsure ait réactivé un foyer latent de M. ulcerans au niveau du site de la morsure.

Notre base de données nous a également permis de contribuer à d’autres études, notamment celles sur l’influence du BCG et de la schistosomiase sur l’UB. Dans les deux cas, nous trouvons une association significative avec les formes graves de l’UB, l’absence de vaccination BCG et la schistosomiase favorisant le développement de formes osseuses. Aucun lien n’a pu être établi entre la présence ou l’absence de l’infection à Schistosoma haematobium et l’UB.

Dans la dernière partie de notre travail, nous nous sommes attachés à l’étude de quelques facteurs de risque de l’UB. Nous avons montré que l’UB est essentiellement associé à l’âge, le lieu de résidence et le type d’eau utilisé. Pour les sujets de 5 ans et plus, le risque d’UB est plus élevé chez les sujets vaccinés à la naissance avec le BCG. L’analyse par strate d’âge des sujets âgés de 5 ans et plus, nous a permis de voir que dans le groupe des 50 ans et plus l’influence du type d’eau utilisé est moindre que dans les autres groupes d’âge, laissant envisager qu’un autre facteur entre en jeu :une réactivation de la maladie à la faveur d’une baisse d’immunité.

Notre étude démontre que la prise en charge de l’UB doit être pluridisciplinaire et doit pouvoir englober diverses interventions telles que :

- les campagnes d’information à la population,

- la formation du personnel sanitaire ainsi qu’une implication de l’état,

- une bonne prise en charge des malades au niveau des centres de traitement de l’UB en collaboration avec les laboratoires régionaux et internationaux,

- la confirmation microbiologique des cas,

- la mise en place d’un suivi des malades en s’appuyant sur les structures déjà mises en place pour d’autres maladies,

- la mise à disposition des populations de sources d’eau potable (puits, pompes) qui par la même occasion permettront de limiter/diminuer d’autres affections liées à la consommation d’eau non potable,

- la poursuite des activités de recherche sur un éventuel vaccin ou une médication appropriée, ainsi que sur le réservoir de M. ulcerans afin de pouvoir mettre en place des stratégies de prévention de la maladie.

Doctorat en Sciences de la santé publique
info:eu-repo/semantics/nonPublished

Le rôle majeur de l’Helicobacter pylori dans l’étiopathogénie des maladies gastroduodénales (gastrite, ulcère gastrique et duodénal, lymphome gastrique) est bien établi aujourd’hui. L’OMS l’a reconnue comme jouant un rôle important dans la survenue des lésions cancéreuses gastriques. La prévalence de l’infection à H. pylori varie selon les pays de 20% à 90% avec des taux supérieurs à 60% dans les pays en développement, dont le Bénin. Les méthodes usuelles de diagnostic sont soit invasives nécessitant une endoscopie gastrique avec biopsies (test rapide à l’urée, histologie, culture et PCR), soit non-invasives (test respiratoire à l’urée marquée au carbone, sérologie, et détection de l’antigène dans les selles). La trithérapie associant un inhibiteur de la pompe à protons (IPP) et deux antibiotiques choisis parmi l’amoxicilline, la clarithromycine et le métronidazole est recommandée pour son traitement. La survenue de résistance des souches H. pylori aux différents antibiotiques devient une cause majeure de l’échec des régimes d’éradication.

Afin d’évaluer l’applicabilité et l’efficacité des régimes thérapeutiques recommandés en pratique courante, et à partir d’une étude de cohorte prospective, nous avons étudié la prévalence de l’infection à H. pylori chez les patients consultant à la clinique de Gastroentérologie de l’hôpital universitaire Erasme à Bruxelles, déterminé son taux de résistance primaire aux antibiotiques, et évalué le taux d’éradication d’H. pylori par la trithérapie. Nous avons aussi évalué la performance du test de détection de l’antigène d’H. pylori dans les selles pour le diagnostic chez l’adulte (avant traitement) comparé avec les méthodes de référence (culture, histologie), également dans le contrôle de l’éradication.

Au Bénin, nous avons évalué à partir d’une étude transversale prospective, la prévalence de l’infection à H. pylori dans une population en milieu urbain et rural. Nous avons déterminé la distribution par famille des sujets infectés, ainsi que l’influence des variables démographiques individuelles, et les caractéristiques socio-économiques familiales sur le risque de l’infection.

La prévalence de résistance primaire à la clarithromycine et au métronidazole fut observée respectivement dans 3% et 31% des souches isolées. Aucune résistance primaire à l’amoxicilline et à la tétracycline n’a été observée.

Les analyses en intention de traiter, ont montré que H. pylori a été éradiqué chez 80% des patients inclus dans l’étude thérapeutique. Le taux d’échec d’éradication fut de 20%. Comparé au 14C-TRU, le test HpSA avait une sensibilité de 100%, une spécificité de 91%, VPP de 69%, VPN de 100%. De même, la sensibilité du test HpSA par rapport aux deux méthodes usuelles (culture et histologie) est de 96.5% pour une spécificité de 91.2%, une VPP de 90.3% et une VPN de 96.8%.

Au Bénin, la prévalence de H. pylori était de 75.4% en ville et de 72.3% dans le village (p = 0.459). Aucune association n’a été observée avec l’âge, le sexe, le niveau d’instruction, la taille du ménage, l’activité économique ou le mode d’approvisionnement en eau potable. Le taux d’infection était plus élevé chez les enfants dont les parents étaient infectés et chez ceux ayant une mère H. pylori positive (p < 0.001). L’analyse multivariée par régression logistique a montré que la densité d’occupation des dortoirs [OR (95%) = 9.82 (4.13-23.31)] p < 0.001), et le statut des mères dans le ménage ([OR (95%) = 3.85 (1.53-9.67)] p < 0.001) étaient les prédicteurs indépendants de l’infection par H. pylori. Le risque de l’infection chez les enfants était 13 fois plus élevé quand les deux parents sont simultanément positifs OR (95% CI) = 13.6 (3.63-51.22), il l’était respectivement de 5.3 (1.52-18.45); 2.7 (0.47-15.44), quand la mère et le père sont positifs p < 0.001. Aussi le risque d’infection à H. pylori comparé aux enfants qui dorment seul dans leur chambre, était élevé pour ceux qui dorment avec un ou deux personnes OR (95% CI) = 5.2 (1.08-25.16), p < 0.05, et plus élevé chez les enfants qui dorment à 4 ou plus OR (95% CI) = 16.6 (2.66-103.44), p < 0.005, comparé à ceux qui dorme seuls. Donc, le contact avec des personnes infectées au sein de la famille et la vie en promiscuité, étaient associés avec un risque d’infection plus élevé indiquant une transmission intrafamiliale de l’infection par H. pylori.

En conclusion, nos résultats montrent une séroprévalence encore élevée de l’infection à H. pylori dans la population béninoise. Une surveillance de l’épidémiologie accompagnée de mesures de prévention ciblées sur les facteurs potentiels de risque de l’infection doit être poursuivie. La validation du test de détection de l’antigène dans les selles avant traitement et dans le contrôle de l’éradication de la bactérie pour le suivi thérapeutique des patients infectés, est une alternative intéressante notamment au Bénin. Le taux de résistance primaire pour le métronidazole est actuellement stable en Belgique, alors que la prévalence de la résistance à la clarithromycine mérite d’être précisée par d’autres études multicentriques. La trithérapie classique à base d’inhibiteur de la pompe à protons–amoxicilline-clarithromycine reste recommandable en première intention. La surveillance épidémiologique de l’infection basée sur la prévalence locale des souches clarithro-résistantes et métronidazole-résistantes devrait être poursuivie.

SUMMARY OF THE THESIS

The major role of H. pylori in the etiopathogeny of various gastroduodenal diseases (gastritis, gastric and duodenal ulcers, gastric lymphoma) is well established today. The World Health Organization concluded that H. pylori plays a causal role in the chain of events leading to cancer of the stomach.

The prevalence of H. pylori infection varies by country from 20% to 90%, with higher prevalence rates over 60% observed in developing countries, including Bénin. The usual methods allowing the diagnosis of the gastric infection by H. pylori are either invasive, requiring a gastric endoscopy and biopsies (fast urease test, anatomopathological examination, culture and PCR), or noninvasive (breath test with 13C or 14C marked urea, serology and stool antigen detection). Triple therapy associating a proton pump inhibitor (PPI) with two antibiotics, chosen between amoxicillin, clarithromycin and metronidazole, is currently recommended. Resistance of H. pylori strains to antibiotics becomes a major determinant in the failure of eradication of regimens.

To evaluate the applicability and efficacy of the therapeutic recommendations in our pratice, based on a prospective study, we studied the prevalence of H. pylori infection in the outpatient population of the Gastroenterology clinic at the Erasme University hospital in Brussels, determined its rate of primary resistance to antimicrobial agents and evaluated the rate of eradication of H. pylori by triple therapy. We also evaluated the performance of a stool antigen detection test for the diagnosis of H. pylori infection in adults (before treatment) compared with reference methods (culture and histology) as well as in control of eradication.

In Benin, we evaluated by a cross-sectional study the prevalence of the infection with H. pylori in the population living in urban and rural environment. We determined the family distribution of infected subjects as well as the influence of individual demographic variables and of the socio-economic family characteristics on the risk of infection.

In Brussels, primary resistance to clarithromycin and metronidazole was observed in 3% and 31% of the isolates, respectively. No primary resistance to amoxicillin and tetracycline was observed. By intention to treat analysis, H. pylori was eradicated in 80% of patients included in the therapeutic study. The rate of eradication failure was 20%. In comparison with 14C-Urea breath test, the H. pylori Stool Antigen test showed a sensitivity of 100%, a specificity of 91 %, PPV of 69%, and NPV of 100%. Compared to the reference methods (culture and histology), the HpSA test had a sensitivity of 96.5% and a specificity of 91.2%. PPV of 90.3% and NPV of 96.8%.

In Benin, the prevalence of H. pylori antibodies was 75.4% in town and 72.3% in the village (P= 0.459). No association was found between infection and age, sex, education level, size of the household, economic activity or source of drinking water. The infection rate was higher in children of parents who were both infected and also in those whose mother was infected (p < 0.001). By logistic regression analysis, the density of occupation of dormitories (more than three persons sharing dormitory, [OR (95%) = 9.82 (4.13-23.31)] p < 0.001), and mother status within the household ( [OR (95%) = 3.85 (1.53-9.67) ] p < 0.001), were independent predictors for H. pylori infection. The risk of H. pylori infection in children was 13 times higher when the two parents were simultaneously positive: OR (95% CI) = 13.6 (3.63-51.22) and it was respectively of 5.3 (1.52-18.45); 2.7 (0.47-15.44), when mother and father were positive p < 0.001. H. pylori infection risk in children was higher for a sharing a dormitory with one or two persons, OR (95% CI) = 5.2 (1.08-25.16), p < 0.05 and was even higher if a dormitory of 4 persons or more, OR (95% CI) = 16.6 (2.66-103.44), p < 0.005 as compared to sleeping alone. Family contact with infected persons and crowded living conditions were associated with increased risk of infection consistent with intrafamilial H. pylori transmission.

In conclusion, our results confirm a still high H. pylori seroprevalence in population in Benin. An epidemiolgic survey with prevention mesures targeted on potential risk predictors should be going on. Validation of antigen detection test in patients stools before treatment and for eradication control could be an interested alternative, notably in Benin. Primary resistance rate on metronidazole is stable today in Belgium, though the resistance prevalence on clarithromycin should be determined by other multicentric studies. Standard triple therapy by (PPI)-amoxicillin-clarithromycin is still recommended in first intention to treat. Epidemiological survey of infection based on local prevalence of claritromycin-resistant and metronidazole-resistant strains should be continued.

Doctorat en Santé Publique
info:eu-repo/semantics/nonPublished

Pressure ulcers (PUs) present intrinsic risk factors that are not consistently identified by clinical assessments. The objective of this project was to develop a clinical practice guideline (CPG) to provide nurses with guidance in identifying and differentiating how intrinsic and extrinsic risk factors are associated with populations at risk for developing avoidable and unavoidable PUs. CPG development followed a systematic method to search the literature, organize findings, and assess the strength of the resulting evidence and its applicability to the CPG. Quality of the CPG was assessed by a panel of 8 health care professionals using the Appraisal of Guidelines for Research & Evaluation II instrument. Findings of the assessment indicated a high overall quality of the CPG; its immediate use was recommended and systematic evaluation was suggested to promote usage in a wider array of health care contexts. The quality domains with the highest scores were scope, purpose, applicability, editorial independence (all 100%), rigor of development (99.7%), and clarity of presentation (99.3%). The stakeholder involvement domain demonstrated the lowest--yet still robust--score (94.4%). The CPG can be used to emphasize appropriate and specific nursing competencies for making informed decisions when identifying and describing patients at risk for developing PUs. Further research and evaluation of the use of this CPG will be useful to demonstrate how CPGs can help to decrease the incidence of avoidable PUs. The potential for positive social change relative to the prevention of PUs is high. Decreased incidence of preventable PUs will eliminate unnecessary health care costs and improve overall health outcomes of patients at all levels of socioeconomic status.

Previous literature showed weak and sometimes contradictory evidence regarding the best interventions to prevent pressure ulcers and the best factors that can serve as predictors for ulceration. The aim of this study was to explore effective interventions and associated risk factors in the area of pressure ulcer. A retrospective approach was used to explore such interventions and risk factors in a more natural clinical environment than found in a prospective study. While retrospective studies have their limitations, one problem of prospective studies, the Hawthorn effect, is not present. In order to meet the aims of the study, a matched case-controlled design was employed. A convenience sampling technique was used to select all patients who matched the study criteria. Two groups of patients were selected. The first group developed pressure ulcer during hospitalization, the other did not. In order to have a sound and robust comparison, each patient from the pressure ulcer groups was matched or at least nearly matched with another patient from the non-pressure ulcer group for a number Waterlow sub-scores. Further criteria for selection included a minimum of three days total length of stay in hospital and being initially free of any pressure ulcer on admission for both of the study groups. Electronic medical records for all patients were revised, and multidimensional data were extracted using a data extraction sheet. Data analyses were carried out using univariate analysis (t-test, Mann-Whitney, Chi-square and Fisher’s exact test) and multivariate analysis (binary logistic regression). In univariate analysis for preventive interventions, the following interventions were significantly associated with pressure ulcer prevention (P≤ 0.05): standard hospital bed, seating cushion, static pressure redistributing mattress, re-positioning every four hours and helping the patient to sit regularly in a chair. When the effect of all interventions was adjusted through the multivariate model, the following interventions were independently associated with prevention: draw sheet, re-positioning every four hours and helping patient to sit regularly in chair (odds ratio = 0.24, 0.06 and 0.13 respectively; P≤ 0.05). In univariate analysis for risk factors related to physical activity and mobility, the following factors were significantly associated with developing pressure ulcer (P≤ 0.05): moving in bed with help, the ability to take a bath only in bed, needing two helpers in performing activities of daily living and moving outside bed only by a hoist. When adjusting the effect of all variables related to physical activity and mobility through the multivariate model, only two factors were independently associated with developing pressure ulcer: moving in bed with help and the ability to take a bath only in bed (odds ratio = 7.69 and 3.67 respectively; P≤ 0.05). In univariate analysis for risk factors related to pressure ulcer intrinsic risk factors, the following factors were significantly associated with developing pressure ulcer (P≤ 0.05): presence of three underlying medical conditions, dehydration, depression, having a blood transfusion, serum albumin <32mg/dl, haemoglobin <130 g/l in males or <115 for females and systolic blood pressure <113 mmHg. When adjusting the effect of all variables related to intrinsic risk factors through the multivariate model, the following risk factors were independently associated with pressure ulcer: presence of two underlying medical conditions, presence of three underlying medical conditions, cognitive impairment, serum albumin <32mg/dl and haemoglobin <130 g/l in males or <115 for females (odds ratio = 13.3, 143, 4.3, 0.10 and 0.14 respectively; P≤ 0.05). Findings from this study suggest a number of interventions to be effective in PUs prevention, and a number of risk factors that can predict risk of PUs. Findings were based on statistical association between acquiring PUs and the independent variables (preventive interventions and risk factors). This cannot constitute a cause and effect relationship due to the retrospective nature of data analyzed; it only supports the association between a number of interventions and risk factors in preventing or predicting PUs. This can guide further research to investigate these interventions and risk factors by employing the same approach used, but in a prospective manner.

Dating violence has been reported globally as a public health and socio-cultural issue affecting millions of female university students in dating relationships. The serious health implications can affect academic performance and the total wellbeing of the individual and the society. Literature on risk and protective factors for dating violence among students at universities is limited in Nigeria. The purpose of this study was to explore and describe the perceptions of risk and protective factors for dating violence among female students at the University of Benin, Nigeria, using a case study methodology. In this study, a sample of 90 participants was recruited to participate in nine focus groups. Data were collected through focus group discussions. Thematic content analysis was employed to analyse the data, which yielded 24 themes. These were grouped according to the four levels of the socio-ecological framework: individual, interpersonal, community and societal level factors regarding risk of and protection from dating violence among female students. Thirteen themes were identified under risk factors for dating violence among female students, while 11 were identified under protective factors. Individual level risk factors included alcohol and substance abuse, poor interpersonal skills, poor control of emotions, possessiveness and risky sexual behavior. Interpersonal level risk factors included negative childhood experiences, influence from others and clash in belief systems between partners. Community level risk factors included patriarchy and violence in the community, and societal level risk factors included the influence of technology on relationships, absence of regulations to protect women from abuse and poverty. Individual level protective factors included maturity and self-knowledge/acceptance before dating, self-protective behaviours and control. Interpersonal level protective factors included having elders as good role models, trusting relationships, mutual respect between partners and an open relationship and transparency between partners. The community level protective factors included cultural norms to reduce violence and the university response, while societal level protective factors included public awareness and laws to protect women from violence. The findings raise the need for the university management and other stakeholders on campus to develop community awareness campaigns around healthy dating relationships among partners, and to improve the practice of dating violence prevention. Policy makers in Nigeria can use the findings to develop policies and regulations to address dating violence and other forms of violence on Nigerian campuses.

L'objectif était d'évaluer l'effet de l'anémie pendant la grossesse et ses facteurs de risque sur le développement cognitif d'enfants à un an.Notre cohorte a inclus 636 couples de mères et d'enfants singletons nés de femmes enceintes incluses dans un essai clinique antipaludiques au Bénin. Les prélèvements sanguins ont été réalisés lors des 1er et 2nd visites prénatales (VP) et à l'accouchement (AC) afin d'évaluer la concentration en hémoglobine (Hb) et la ferritine sérique. Les selles ont été testé la présence d'oeufs d'helminthes par la technique de Kato-Katz. Toutes les femmes ont reçu 600mg de mébendazole lors de la 1er VP. À l'âge d'un an, le développement psycho-moteur des enfants a été évalué par le Mullen Scales of Early Learning.La prévalence de la carence en fer (CF) chez les femmes 1er et 2nd VP et à l'AC était de 30,5%, 34,0% et 28,4%, respectivement. La prévalence des infections helminthiques était de 11,5%, 7,5% et 3,0 % à la 1er, la 2nd VP et à l'AC, respectivement. La prévalence de l'anémie a diminué de 67,1% à la 1er VP à 40,1% à l'AC. L'infection par ankylostomes à la 1er VP était associée avec un score de motricité globale (MG) inférieure -4,9 (IC 95%:-8,6;-1,3). Nous avons observé une relation quadratique négative significative entre la MG de l'enfant et la concentration d'Hb à la première et la 2nd VP.Dans ce contexte de supplémentation en fer des femmes enceintes, la CF maternelle n'était pas associée au développement neurocognitif de l'enfant. De plus, il semble que des concentrations en Hb légèrement en-dessous de la normale (comprises entre 90 et 110 g/L) soient optimales pour la motricité des enfants à un an
The aim was to investigate the impact of anemia during pregnancy and its risk factors on the cognitive development children.Our cohort included 636 mother-singleton child pairs from 828 eligible pregnant women who were enrolled during their first antenatal care (ANC) visit in Allada, Benin, into a clinical trial comparing two malarial drugs. Ferritin and hemoglobin (Hb) level were assessed at the first and second ANC visit of at least one-month interval and at delivery. Stool samples of pregnant women were tested for helminths using the Kato-Katz method. All women were given 600 mg of mebendazole to be taken after the first ANC visit. Cognitive and motor functions of one-year-old children were assessed using Mullen Scales of Early Learning.The prevalence of iron deficiency (ID) at first and second ANC visits, and at delivery was 30.5%, 34.0% and 28.4%, respectively. Prevalence of helminth infection was 11.5%, 7.5% and 3.0% at first, second ANC visits and at delivery, respectively. Prevalence of anemia decreased from 67.1% at first ANC visit to 40.1% at delivery. Hookworm infection at first ANC was associated with lower mean gross motor (GM) scores -4.9 (95% CI:-8.6;-1.3) in the adjusted model. We observed a significant negative quadratic relationship between infant GM function and Hb concentration at first and second ANC visits.Prenatal helminth infection is associated with poor with infant cognitive and motor development. However, in the presence of iron supplementation, ID is not associated with infant neurocognitive development. Further, there appears to be an Hb concentration range (90-110 g/L) that may be optimal for better GM function of one-year-old children

Prostate cancer is the most common cancer in men. One type of treatment is internal radiation therapy, brachytherapy. This treatment requires the patient to lie completely motionless and in lithotomy position. The purpose of this study was to investigate the prevalence of pressure ulcers associated with brachytherapy in prostate cancer at the UniversityHospitalin Uppsala. Furthermore, the purpose was to identify the most common location of pressure ulcer and to examine whether there were any connection between risk factors and possible pressure ulcers. Thirty patients participated in the study. The data collection was carried out partly by the nurse anesthetist and partly by the nurse in the oncology ward in fall 2009 to spring 2010. The study showed that seven of thirty patients (23.3%) developed pressure ulcers after brachytherapy. All of these were stage 1 according to EPUAP's pressure ulcer scale. Only one of the patients (3.3%) had remaining pressure ulcer the day after treatment. The most common location were lower legs/calves (16.7%). No statistically significant relationship was found between risk factors and the development of pressure ulcers. The results of this study showed a relatively high incidence of pressure ulcers (23.3%). All of stage 1 and only one of the pressure ulcers were remaining the day after brachytherapy. This indicates a good pressure-relieving measures and equipment, and that the patients in this study have a relatively good general          condition.Keywords: brachytherapy, pressure ulcers, lithotomy position, risk factors
Prostatacancer är den vanligast förekommande cancersjukdomen hos män. En av behandlingsformerna är intern strålbehandling, brachyterapi. Denna behandling kräver att patienten ligger helt stilla och i gynekologiskt läge. Syftet med studien var att undersöka förekomsten av trycksår i samband med brachyterapi vid prostatacancer på Akademiska sjukhuset i Uppsala. Vidare var syftet med studien att kartlägga de vanligaste lokalisationerna samt att undersöka om de fanns några samband mellan riskfaktorer och eventuella trycksår. Trettio patienter deltog i studien. Datainsamlingen utfördes dels av anestesisjuksköterskan och dels av patientansvarig sjuksköterska på onkologavdelningen under hösten 2009 till våren 2010. Resultatet av studien visade att sju av trettio patienter (23,3 %) utvecklade trycksår efter behandlingen. Alla dessa var av grad 1 enligt EPUAP:s trycksårsskala. Endast en av patienterna (3,3 %) hade kvar trycksåret dagen efter behandlingen. Den vanligaste lokalisationen för trycksår var underben/vader (16,7 %). Inga statistiskt säkra samband kunde ses mellan riskfaktorerna och utvecklandet av trycksår. Studien visade en relativt hög frekvens av trycksår (23,3 %). Dock var samtliga av grad 1 och endast ett trycksår var kvarstående till dagen efter brachybehandlingen. Detta tyder på bra tryckavlastande åtgärder och utrustning samt att patienterna i den aktuella undersökningsgruppen har relativt gott allmäntillstånd.   Nyckelord: brachyterapi, trycksår, gynekologiskt läge, riskfaktorer

On assiste à un phénomène de transition épidémiologique dans les zones tropicales avec l’émergence des affections cardiovasculaires induites par l’athérosclérose. L'objectif de cette thèse était de contribuer à une meilleure connaissance de l’épidémiologie des facteurs de risque cardiovasculaire en population tropicale, en particulier au Bénin. Une analyse des prévalences des facteurs de risque cardiovasculaire en population générale au Bénin a été menée à partir de la base de données de l’enquête nationale STEPS. Une revue systématique des cohortes cardiovasculaires conduites en population générale en Afrique subsaharienne (ASS) a été réalisée. La méthodologie de la cohorte TAHES (Tanvè health study) a été élaborée ; une étude pilote a été mise en place. Les travaux montrent des fréquences relativement élevées de plusieurs facteurs de risque cardiovasculaire au Bénin et des différences suivant les milieux de résidence. Par ailleurs, ils soulignent la rareté des études de cohortes sur les maladies cardiovasculaires en ASS. Les résultats préliminaires de la cohorte TAHES pilote confortent l’idée de la faisabilité d’une étude plus large
An epidemiological transition is observed in tropical areas with the growing of cardiovascular atherosclerosis diseases. The objective of this thesis was to contribute to a better knowledge of the epidemiology of cardiovascular risk factors in tropical area, particularly in Benin. An analysis of prevalence of cardiovascular risk factors in general population was led from Benin national STEPS survey. A systematic review of cardiovascular prospective cohort studies in sub-Saharan Africa (SSA) was conducted. Methodology of TAHES (Tanvè health study) cohort was described; a pilot study was implemented. These data show high frequencies of several cardiovascular risk factors in Benin; differences between urban and rural areas were observed. They underline the rarity of cardiovascular cohort studies in ASS. Besides, they support the hypothesis of cardiovascular cohort feasibility in general population in Benin

A ocorrência de úlceras por pressão (UP) é realidade em vários locais de assistência à saúde e caracterizam-se por serem lesões freqüentemente encontradas em pacientes graves hospitalizados ou em locais de institucionalização por longos períodos. O objetivo geral deste estudo foi: analisar a incidência de úlceras por pressão e os fatores de risco para o seu desenvolvimento em pessoas idosas residentes em Instituições de Longa Permanência (ILPI). Trata-se de estudo quantitativo de coorte, prospectivo. Inicialmente o projeto foi aprovado pelo Comitê de Ética em Pesquisa da Universidade do Vale do Sapucaí e aprovação dos responsáveis em quatro Instituições de Longa Permanência para os idosos (ILPI), em 3 cidades do Sul de Minas Gerais, que constituíram os locais para a coleta de dados. A amostra constou de 94 idosos que atenderam os seguintes requisitos: ter idade igual ou superior a 60 anos; apresentar escore = 18 (em aplicação da Escala de Braden) e aceitar participar do estudo. Os dados foram obtidos através de exame físico, entrevista e análise dos prontuários, pela pesquisadora além de 9 colaboradores, enfermeiros e alunos de graduação, previamente treinados. Os idosos, que se enquadraram nos critérios de inclusão, foram avaliados 3 vezes na semana, durante 90 dias consecutivos ou até que desenvolvessem UP ou tivessem alta, transferência ou óbito. Os dados obtidos foram submetidos a análises descritivas e inferencial através de teste Qui-Quadrado de Pearson, Exato de Fisher, Kolmogorov-Smirnov, t-Student, e o não paramétrico de Mann-Whitney. Os resultados mostraram incidência cumulativa global de 39,4% e taxa de incidência (ou incidência por densidade) de 0,57 UP por 100 paciente-dias. Verifica-se que 37 (77,08%) idosos desenvolveram úlcera única; as localizações preferenciais foram o maléolo (27,08%) e o ísquio (25,00%) e as UP em estágio I foram as mais freqüentes (66,67%). Quanto às características demográficas dos idosos, houve predomínio do sexo feminino (62,80%) e da raça branca (68,19%), com idade média de 79,06 ± 9,59. Clinicamente, apresentaram IMC médio de 20,93 ± 4,95, predominando as doenças urinárias (58,50%), uso de neurolépticos /psicotrópicos (52,10%), não tabagismo (80,90%). Úlcera prévia esteve presente em 28,70% dos idosos estudados. Tanto na 1ª como na segunda avaliação de risco, a sub escala mobilidade apresentou os maiores valores de alfa de a-Cronbach (0,6591 e 0,6631) mostrando-se a mais relevante para a avaliação do risco. As seguintes variáveis mostraram-se associadas à presença de UP, na análise univariada: sexo feminino (p= 0,012); uso de medicamentos neurolépticos /psicotrópicos (p=0,016); presença de úlcera prévia (p=0,041); sub escala umidade (p=0,021), na primeira avaliação e sub escalas nutrição (p=0,013), fricção e cisalhamento (p=0,036) e umidade (p=0,034), na última avaliação. Sexo feminino e presença de úlcera prévia foram confirmados como preditivos para o desenvolvimento de UP, segundo a regressão logística (r2=0,311), mostrando 3,46 e 2,76 vezes mais chances de desenvolverem UP comparativamente aos homens e aos idosos sem UP, respectivamente. Além desses resultados, os escores totais da Escala de Braden diferiram entre os grupos com e sem UP, entre a 1ª (p=0,030) e última avaliações (p=0,001), sendo sempre menores para os idosos com UP. Em conclusão, este estudo contribui não somente para a informação acerca da incidência de UP e os principais fatores de risco para o seu desenvolvimento, em idosos institucionalizados, escassa em nosso meio, como para a sistematização de métodos que possam ser reaplicados em outros centros e em investigações futuras
The occurrence of ulcers by pressure (UP) is a reality in many places of health assistance and they are characterized for being frequent lesions found in serious hospitalized patients or in institutionalization places for long periods. The general aim of this study was analyzing the incidence of ulcers by pressure and the risk factors for their development in elderly people living in Long Staying Institutions (LSI). It is a prospective, cohort quantitative study. At first, the project was approved by the Ethics Committee in Research of the Universidade do Vale do Sapucaí and approved by the people in charge of four Long Staying Institutions (LSI) for elderly people in three cities in the south of Minas Gerais State which served as the place for the data collect. 94 elders who attended the following profile formed the sample: age was equal or superior to 60 years old; to show a score = 18 (in applying the Braden scale) and to accept in taking part in the study. The data were acquired through a physical examination, interview and the handbook analysis by the researcher and other nine collaborators, nurses and graduation students, previously trained for that. The elderly, who fitted into the inclusion criteria, were assessed three times a week for 90 days, with no interruption, or until they developed an ulcer or until they were send out of the hospital, were transferred or died. The data acquired were submitted to descriptive and inferential analyses through the Pearson Qui-Square test, Fisher Exact, Kolmogorov-Smirnov, t-student and the non-parametric of Mann-Whitney. The results showed a global cumulative incidence of 39,4% and incidence rate (or density by incidence) of 0,57 UP by a 100 patients-day. It is possible to verify that 37 (77,08%) elders developed single ulcer; the preferential location were the malleolus (27,08%) and the ischium (25,00%) and the UP in first stage were the most frequent ones (66,67%). In relation to the demographic features of the elders, there was a preponderance of the female sex (62,80%) and the white race (68,19%), with an age average ranging from 79,06 ± 9,59. Clinically, they presented an average CMI ranging from 20,93 ± 4,95, with a predominance of urinary diseases (58,50%), use of neuroepileptics/psycothropics (52,10%), non smoking (80,90%). The previous ulcer was present in 28,70% of the elderly studied. In the first as well as in the second risk assessment, the sub-scale mobility presented the higher values of alpha of ? -Cronbach (0,6591 and 0,6631) showing itself as the most relevant for the risk assessment. The following variables showed themselves associated to the presence of UP, in a single varied analysis: female sex (p=0,012); use of neuroepileptics/psycothropics medicines (p=0,016%); presence of previous ulcer (p=0,041%); humidity sub-scale (p=0,021), in the first assessment and the nutrition sub-scales (p=0,013), rubbing and and shearing stress (p=0,036) and humidity (p=0,034), in the last assessment. Female sex and previous ulcer presence were confirmed as predictive for the development of UP, according to the logistic regression (r2=0,311), showing 3,46 and 2,76 times more chances of developing UP comparatively to men and elderly without UP, respectively. Besides these results, the total scores of the Braden Scale were different between the groups with and without UP, between the first (p=0,030) and the last assessment, being always the smallest ones for the elderly with UP. As we can conclude, this study contributes not only for the information about the incidence of the UP and the main risk factors for its development, in institutionalized elderly, very rare in our context, as for the systematization of methods that can be reapplied in other centers and in future investigations

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES
Introduction: The elderly are more susceptible to developing UPP due to changes that occur with aging, especially in the skin. The incidence and prevalence of these lesions increases with age, especially over 85 years. Being able to identify groups at risk for UPP from the application of many assessment tools used in order to diagnose the degree of risk for developing skin lesions. Objectives: Assess the risk factors for pressure ulcers in elderly people with physical limitations, living in the city of João Pessoa - PB, to describe the socio-demographic and clinical characteristics of elderly; evaluate the functional capacity of the elderly; Identify the risk score for pressure ulcers; Relate the level of functional independence according to age, physical limitations, and mental state; Relate the risk scores of the pressure ulcer according to the Braden scale socio-demographic, clinical, physical limitations, mental state level functional independence and history of previous UPP. Methodology: This is an observational cross-sectional survey, quantitative, developed through a household survey, the city of João Pessoa. Based on a sampling process by clusters of dual-stage, obtaining a sample of 51 people aged 60 years or older who had some physical limitation. To analyze the data distributions were obtained absolute percentage and bivariate and inferential statistical techniques. Results: We identified 25 elderly (49%) at risk for UPP, mostly with cognitive deficits and high levels of dependency for activities of daily living, prevalence of UPP 7.8%, several factors have acted to the risk of injury elderly, since the aging of biological, social and economic aspects, clinical conditions (involving behaviors, underlying disease, mental state, medication), activity level and physical mobility, functional dependency to self-care, education for preventive care, and previous history of UPP. Conclusion: It is expected from this study contribute to public policy in order to sensitize managers to the issue, and prepare our professionals to work in assessing the functional capacity of older people and adding scale for risk assessment as part of the UPP preventive strategies for the occurrence of these skin lesions at home.
Introdução: As pessoas idosas são mais susceptíveis ao desenvolvimento de UPP em virtude das alterações que ocorrem com o envelhecimento, sobretudo na pele. A incidência e prevalência dessas lesões aumentam com a idade, principalmente acima de 85 anos. Nos últimos tempos tem sido possível identificar grupos em risco para UPP a partir da aplicação de inúmeros instrumentos de avaliação empregados com a finalidade de diagnosticar o grau de risco para desenvolvimento de lesões de pele. Objetivos: Avaliar os fatores de risco para úlcera por pressão em idosos com limitação física, domiciliados no município de João Pessoa PB; descrever as características sócio-demográficas e clínicas dos idosos; Avaliar a capacidade funcional dos idosos; Identificar o escore de risco para úlcera por pressão; Relacionar o nível de independência funcional segundo a faixa etária, limitação física, e estado mental; Relacionar os escores de risco de úlcera por pressão da Escala de Braden segundo as variáveis sócio-demográficas, clínicas, limitação física, estado mental nível de independência funcional e história de UPP prévia. Metodologia: Trata-se de uma pesquisa transversal e observacional, de natureza quantitativa, desenvolvida por meio de inquérito domiciliar, no município de João Pessoa-PB, a qual partiu de um processo amostral por conglomerados de duplo estágio. Obteve-se uma amostra de 51 pessoas com 60 anos ou mais que apresentavam alguma limitação física. Para a análise dos dados foram obtidas distribuições absolutas, percentuais uni e bivariadas, sendo empregadas técnicas de estatística inferencial. Resultados: Identificou-se 25 idosos (49%) com risco para UPP; sendo a maioria com déficit cognitivo e elevados níveis de dependência para as atividades de vida diárias; uma prevalência de UPP de 7,8%; percebeu-se que diversos fatores agiram sinergicamente para o risco da lesão no idoso: desde o próprio envelhecimento biológico, aspectos sociais e econômicos, condições clínicas (que envolvem comportamentos, doença de base, estado mental, medicação), nível de atividade e mobilidade física, dependência funcional para o autocuidado, educação para o cuidado preventivo, e história de UPP anterior. Conclusão: Espera-se com este estudo contribuir com as políticas públicas, de modo a sensibilizar os gestores para essa problemática, e preparar nossos profissionais para atuarem na avaliação da capacidade funcional dos idosos e na inclusão de escala de avaliação de risco para UPP, a exemplo da Escala de Braden, como parte das estratégias preventivas para ocorrência dessas lesões de pele no domicílio.

L'hyperhomoscystéinémie (HHcy) est considérée comme un facteur indépendant de risque cardio-métabolique. Notre travail avait pour objectifs : 1) de déterminer la prévalence de l’HHcy au Bénin; 2) d’étudier sa relation avec les apports de vitamines B12, B9, B6 et B2, la consommation d’alcool, l’âge, le sexe et le niveau socioéconomique (NSE); 3) de vérifier son association avec les facteurs classiques de risque cardio-métabolique. Un total de 541 sujets apparemment en santé et vivant dans trois zones du Bénin ont été étudiés. L’Hcy sérique a été analysée par ELISA. Des rappels de 24h ont servi à évaluer les apports nutritifs. L’obésité et l’hypertension ont été définies selon l’OMS, la dyslipidémie et la dysglycémie selon la NCEP-ATPIII. Les autres données ont été récoltées par questionnaire. La prévalence de l’HHcy était élevée : 52,2% chez les hommes et de 24,7% chez les femmes. Dans les modèles multivariés, l’Hcy était positivement associée à la consommation de bière locale chez les hommes; chez les femmes, elle était associée négativement à l'apport de vitamine B12. L’Hcy était positivement associée à la tension artérielle, au taux de LDL-cholestérol et au cholestérol total chez les hommes, mais seulement avec le rapport cholestérol total/HDL-cholestérol (CT/HDL-c) chez les femmes. Les femmes présentant une HHcy étaient au moins deux fois plus susceptibles de présenter une hypertension ou un rapport CT/HDL-c élevé que celles dont l’Hcy était normale. Un apport suffisant en B12 ainsi qu’une consommation prudente de boissons alcoolisées pourraient réduire l'HHcy et donc contribuer à réduire le risque cardio-métabolique de cette population du sud du Bénin.
Hyperhomocysteinemia (HHcy) appears to be an independent risk factor for cardiovascular disease. This study aims to determine the prevalence of HHcy in Benin, to explore its relationship with intakes of folate, B12, B6 and B2, with alcohol consumption and with socioeconomic status (SES) and to verify whether it is associated with classical risk factors of cardiovascular diseases. 541 apparently healthy subjects were randomly selected in tree areas of Benin. Hcy was measured in serum using ELISA commercial kits. Nutrient intakes were assessed on the basis of three non-consecutive 24-hour recalls. Alcohol consumption, socio-demographics and SES were documented in personal interviews. Obesity, hypertension, dyslipidemia and hyperglycaemia were defined according to WHO and NCEP-ATPIII. HHcy (> 12 μmol/L) was detected in 52.2% of men and 24.7% of women. In multivariate models, Hcy in men was positively associated with alcohol intake, but only alcohol in beer. In women, Hcy was negatively related to vitamin B12 intake. HHcy was associated in women with more than twice the odds of hypertension and with the CT/HDL-c ratio. In men, Hcy was positively and independently associated with diastolic blood pressure and with LDL-cholesterol and total cholesterol. In this Beninese population, the prevalence of HHcy is particularly high among men, and it appears to be related to alcohol consumption. Inadequate intake of vitamin B12 may be a risk factor for HHcy which could be related to some of cardiovascular factors.

L’étude visait à décrire la transition nutritionnelle et ses liens avec des facteurs de risque de maladies cardiovasculaires (MCV) dans une ville secondaire du Bénin et dans ses environs ruraux, puis de comparer à cet égard, les habitants de la petite ville avec ceux du milieu rural et de la métropole. Les sujets de 25 à 60 ans (n = 541), apparemment en bonne santé, ont été aléatoirement sélectionnés dans la petite ville de Ouidah (n = 171), sa périphérie rurale (n = 170) et dans la métropole Cotonou (n = 200). Les apports alimentaires et l’activité physique ont été cernés par trois rappels de 24 heures. Les données socioéconomiques ont été recueillies par questionnaire. La qualité de l’alimentation a été évaluée par un score de diversité alimentaire, un score d’adéquation en micronutriments et un score de prévention contre les maladies chroniques. Des mesures anthropométriques et de composition corporelle ont été prises. La tension artérielle a été mesurée. Des échantillons sanguins ont été prélevés pour déterminer le profil lipidique à l’aide du sérum et la glycémie à jeun plasmatique. La transition alimentaire était plus poussée dans la métropole que dans la petite ville et le milieu rural, et elle était marquée par des apports plus importants en viande, produits laitiers, œufs, légumes et huiles, mais plus faibles en céréales, poisson, légumineuses, fruits et fibres. La diversité alimentaire y était plus élevée, mais l’adéquation en micronutriments et la prévention étaient plus faibles que dans les autres sites. Il n’y avait pas de différences majeures entre le milieu rural et la petite ville pour la consommation et la qualité alimentaire. L’influence du niveau socioéconomique sur l’alimentation et sa qualité était surtout marquée dans la métropole. Un gradient positif du milieu rural vers la petite ville et la métropole a été observé pour l’obésité générale (8,8%; 12,3%; 18%, p = 0,031) et abdominale (28,2%, 41,5%, 52,5%; P<0,001) et pour le syndrome métabolique (4,1% ; 6,4% ; 11%; P = 0,035) d’après les critères de la Fédération Internationale de Diabète. La fréquence de tension artérielle élevée [TAE] (24,1% ; 21,6% et 26,5%, respectivement pour le milieu rural, la petite ville et la métropole), bien qu’importante, n’était pas significativement différente selon les sites. Le HDL-cholestérol bas était moins fréquent dans la petite ville (18,1%) par rapport au milieu rural (25,3%) et à la métropole (37,5%). L’activité physique, plus importante en milieu rural et en petite ville que dans la métropole, était protectrice contre des valeurs élevées d’IMC (ß = -0,145 ; p<0,01), de tour de taille (ß = -0,156 ; p<0,001), de tension systolique (ß = -0,134 ; p<0,01) et diastolique (ß = -0,112, p<0,01), et de triglycérides (ß = -0,098 ; p<0,05). La consommation de légumes était négativement et indépendamment associée à la tension artérielle diastolique (ß = -0,129, p<0,01), alors que celle de poisson était positivement associée au HDL-cholestérol (ß = 0,168 ; p<0,01). L’adéquation en micronutriments était positivement associée au HDL-cholestérol (ß = 0,144; p<0,01) et à un moindre risque de tension artérielle élevée (OR = 0,46 ; IC 95% : 0,26-0,84). L’étude a confirmé l’existence d’un plus grand risque de MCV avec l’urbanisation, un stade plus avancé de transition alimentaire et un mode de vie sédentaire. Ce risque pourrait être réduit par la promotion d’un mode de vie plus actif associé à des apports plus adéquats en micronutriments et une consommation élevée de poisson et de légumes. ////
The purpose of this study was to describe the nutrition transition and its links with cardiovascular disease (CVD) risk factors in a small-size city of Benin and its rural outskirts, and to compare in this regard, the small-size city and the rural area with the major city. A sample of 541 apparently healthy subjects aged 25-60 years was randomly selected from Ouidah, a small-size city of Benin (n = 171), the rural outskirts of Ouidah (n = 170), and Cotonou, the major city (n= 200). Dietary intake and physical activity were assessed with three non consecutives 24-hour recalls. Socioeconomic data were collected by questionnaire. Dietary quality was assessed using a dietary diversity score, a micronutrient adequacy score and a healthfulness score. Blood pressure was measured. Anthropometric measurements were taken. Blood samples were collected to determine serum lipid profile and plasma glucose. A more advanced stage of dietary transition was observed in the major city, which was characterised by higher intakes of meat, milk products, eggs, vegetables and oils, but lower intakes of cereal, fish, legumes, fruit and fibre than the small-size city and the rural area. Dietary diversity was higher in the major city, while micronutrient adequacy and healthfulness scores were lower compared to the small city and the rural area. There was no significant difference in diet and diet quality scores between the small-size city and the rural area. Socioeconomic factors had a strong influence on diet and its quality in the major city. A positive gradient from the rural area to the small-size city to the major city was observed in the prevalence of overall obesity (18%, 12.3%, 8.8%, p = 0.031), abdominal obesity (28.2%, 41.5%, 52.5%; P<0,001) and the metabolic syndrome (4.1%; 6.4%; 11%; p = 0.035) according to the International Diabetes Federation criteria. The prevalence of elevated blood pressure was high, but did not differ across sites (24.1%, 21.6%, 26.5% for rural, small-size city and major city, respectively). The prevalence of low HDL-cholesterol was lower in the small-city (18.1%) compared to the rural area (25.3%) and the major city (37.5%), while fasting plasma glucose was more highly prevalent in the small city (14.6%) and the rural area (10%) compared to the major city (4%). Elevated triglycerides were uncommon. Physical activity was higher in the rural area and small-size city than in the major city, and it was protective against elevated body mass index (ß = -0.145; p<0.01), waist circumference (ß = -0.156; p<0.001), systolic (ß = -0.134; p<0.01) and diastolic (ß = -0.112, p<0.01) blood pressure, and triglycerides (ß = -0,098; p<0,05). Vegetable intakes were negatively and independently associated with diastolic blood pressure, while fish intake was positively associated with HDL-cholesterol. Micronutrient adequacy score was positively associated with HDL-cholesterol (ß = 0,144; p<0,01) and with a lower likelihood of high blood pressure (OR = 0.46; CI 95%: 0.26-0.84). The study confirmed a higher CVD risk with urbanization, advanced stage of dietary transition and a sedentary lifestyle. This risk could be curtailed by improving micronutrient adequacy and increasing vegetables and fish consumption, and by promoting an active lifestyle.
Ce travail a été réalisé avec l'appui du Centre Collaborateur de l'OMS sur la Transition Nutritionnelle et le Développement (TRANSNUT) de l'Université de Montréal, en collaboration avec deux parténaires du Bénin: l'Institut de Sciences Biomédicales Appliquées (ISBA) de Cotonou et l'Institut Régional de Santé Publique de Ouidah.