Epidemiology of chronic kidney disease in northern region of Senegal: a communitybased study in 2012

Introduction: Chronic kidney disease (CKD) is an emerging worldwide epidemic but few data are  available in African populations. We aimed to assess prevalence of CKD in adult populations of Saint-Louis (northern Senegal).Methods: In a population-based survey between January and May 2012, we included  1,037 adults aged =18 years living in Saint-Louis. Socio-demographical, clinical and biological data were collected during household visits. Serum creatinine was measured by Jaffé method. We estimated  glomerular filtration rate (eGFR) using the 4-variables MDRD equation and CKD was defined by eGFR < 60 mL/min/1.73m2 and/or albuminuria > 1g/L. A multivariate logistic regression was performed to identify factors associated with CKD. Results: Mean participants age was 47.9 ±16.9 years (18-87) and sex-ratio was 0.52. Majority of participants lived in urban areas (55.3% rural) and had school education (65.6%). Overall prevalences of hypertension, diabetes and obesity were 39.1%, 12.7% and 23.4% respectively. Prevalence of CKD was 4.9% (95% CI= 3.5 6.2) and 0.9% had GFR < 30 mL/min/1.73m2. Albuminuria >1g/l was found in 3.5% of people. CKD was significantly more frequent among hypertensive patients  compared to normotensive participants. Only 23% of patients were aware of their disease before the  survey. After multivariate logistic analysis, presence of CKD was significantly associated with  hypertension (OR=1.12, p= 0.02) and age (OR=1.03, p= 0.02). Conclusion: CKD is frequent in adult population living Northern Senegal. Main associated factors are hypertension and age. Prevention strategy is urgently needed to raise awareness and promote CKD detection and early treatment in both urban and rural areas.Key words: Chronic kidney disease, epidemiology, population, Senega

Lipid profile frequency and the prevalence of dyslipidaemia from biochemical tests at Saint Louis University Hospital in Senegal

Introduction: The aim of this study was to evaluate the frequency of lipid profile requests and the  prevalence of dyslipidemia in patients at the biochemistry laboratory of St. Louis University Hospital, as well as their correlation with sex and age. Methods: This was a retrospective study reviewing 14,116  laboratory results of patients of both sexes, over a period of six months (January-June 2013) regardless of the indication for the request. The lipid parameters included were: Total cholesterol, HDL-cholesterol, LDL-cholesterol, trig lycerides with normal values defined as follows: Total cholesterol (<2g/l), HDL- cholesterol (>0,40g/l), LDL- cholesterol (<1,30g/l) and Triglycerides (<1,50g/l). Results: The average age of our study population was 55.15 years with a female predorminance (M/F=0.60). The age group most represented was that between 55-64 years. The frequency of lipid profile request in our sample was 9.41% (or 1,329). The overall prevalence of isolated hypercholesterolemia, hyperLDLaemia,  hypoHDLaemia, hypertriglyceridaemia, and mixed hyperlipidemia were respectively 60.91%, 66.27%, 26.58%, 4.57% and 2.75%. Hypercholesterolemia, hyperLDLaemia, hypertriglyceridaemia and mixed hyperlipidaemia were higher in women with respectively 66.22%, 67.98%, 4.58%, 2.89% than in men (52.01%, 62.81%, 4.44% and 2.40% respectively). On the other hand, the prevalence of hypoHDLaemia was higher in males (32.19%) compared to females (23.76%). Hypercholesterolemia correlated  significantly with age and sex. Conclusion: Our study showed a relatively low request rate for lipid profile and a high prevalence of dyslipidaemia hence the importance of conducting a major study on the prevalence of dyslipidaemia and associated factors in the Senegalese population.Key words: Lipid profile, dyslipidaemia, prevalence, Senega

Dyslipidemia, obesity and other cardiovascular risk factors in the adult population in Senegal

Introduction: According to the WHO, 50% of deaths worldwide (40.1% in developing countries) are due to chronic non-communicable diseases (NCDs). Of these chronic NCDs, cardiovascular diseases remain the leading cause of death and disability in developed countries. The Framingham study has shown the importance of hypercholesterolemia as a primary risk factor. In Senegal, the epidemiology of  dyslipidemia and obesity are still poorly understood due to the lack of comprehensive studies on their  impact on the general population. This motivated this study to look into the key epidemiologic and socio-demographic determinants of these risk factors. Methods: It was a cross-sectional descriptive epidemiological survey which included 1037 individuals selected by cluster sampling. Data were collected using a questionnaire following the WHO STEPwise approach. Socio-demographic, health and biomedical variables were collected. P value Results: The average age was 48 years with a female predominance (M: F of 0.6). The literacy rate was 65.2% and 44.7% of participants were from rural areas. The prevalence of hypercholesterolemia, hyperLDLemia, hypoHDLemia, hypertriglyceridemia and mixed hyperlipidemia were 56%, 22.5%, 12.4%, 7.11% and 1.9% respectively. One in four was obese (BMI> 30kg/m2) and 34.8% had abdominal obesity. The main factors significantly associated with dyslipidemia were obesity, urban dwelling, physical inactivity and a family history of dyslipidemia. Conclusion: The prevalence of dyslipidemia, obesity and other risk factors in the population was high needing immediate care for those affected and implementation of prevention strategies.Key words: Dyslipidemia, obesity, cardiovascular, risk factors, Saint Loui

Analyse physico-chimique de l’eau de l’unité d’hémodialyse du chr de Saint- Louis (Sénégal)

L’insuffisance rénale chronique est un des problèmes majeurs de la santé publique dans le monde. Au Sénégal, une étude récente réalisée dans la population générale adulte avait retrouvé une prévalence de l’ordre de 6,1%. «L’eau pour dilution de concentrées d’hémodialyse» est produite en continue et utilisée en grande quantité chez l’hémodialysé chronique, donc il apparaît primordial de veiller à sa bonne qualité. Au Sénégal, aucune étude n’a été faite à ce jour pour évaluer l’efficacité du système de traitement de l’eau pour dilution des concentrés de dialyse dans les différents centres de dialyse du pays. L’objectif de ce travail est de contrôler l’efficacité du système de traitement de l’eau pour dilution de concentrées d’hémodialyse afin de s’assurer de son innocuité. Les prélèvements ont été effectués au niveau de trois points clés du circuit de traitement de l’eau pour hémodialyse. A l’entrée et à la sortie de l’osmoseur, à la sortie de la boucle de distribution. Les analyses ont été effectuées à l’aide d’électrodes spécifiques. Les valeurs de potentiels ont permis de tracer les courbes d’étalonnage. La détermination par régression des pentes et des ordonnées à l’origine de la relation de Nernst donne E(mV ) = B - A Log Cm avec des coefficients de corrélation variant entre 0,988 et 0,999 prouvant que 98% au moins des variations de tensions mesurées (E) sont attribuables à la concentration. L’analyse physico-chimique des teneurs en chlorures, nitrates et fluorures révèle des teneurs plus élevées à l’entrée de l’osmoseur qu’à la sortie. Ces basses valeurs découlent du rôle de l’osmoseur qui filtre une grande partie des électrolytes. Par contre, à la sortie de la boucle de distribution les teneurs en électrolytes des différents échantillons étaient plus importantes que celles à la sortie de l’osmoseur. Cette forte concentration en électrolytes atteste d’une pollution par la boucle de distribution de l’eau déjà filtrée par l’osmoseur. L’intérêt de cette étude réside dans le fait qu’elle met en lumière l’importance du contrôle de la qualité de l’eau pour l’hémodialyse et la nécessité d’un bon planning de maintenance préventive efficace de l’ensemble de la boucle de traitement d’eau au sein de chaque centre.© 2016 International Formulae Group. All rights reserved.Mots clés: Hémodialyse, eau, chlorures, fluorures, nitrates, électrodes spécifiquesEnglish Title: Physicochemical analysis of Saint–Louis regional hospital’s hemodialysis unit’s water (Senegal)English AbstractChronic kidney disease is a major public health problem worldwide. In Senegal, a recent study in the general adult population found a prevalence of about 6,1%. "Water for diluting concentrated hemodialysis" is produced and used continuously at high levels in hemodialysis chronic. It is therefore essential to ensure its quality. In Senegal, no study has been done to assess the effectiveness of water treatment system for dialysis concentrates dilution in different dialysis centers of the country. The objective of this work is to monitor the effectiveness of the water treatment system for hemodialysis concentrated dilution to ensure its safety. The samples were taken on key issues of hemodialysis water’s treatment circuit. Three levels of sampling were selected. At the entrance and at the outlet of the reverse osmosis unit at the outlet of the distribution loop. Analyses were performed using specific electrodes. Potential values allowed us to map the calibration curves. Determination by regression of slopes and intercepts of the Nernst relation gives with correlation coefficients ranging from 0.988 to 0.999 showing that at least 98% of the measured voltages fluctuations (E) are attributable to the concentration. Physicochemical analysis of the levels of chlorides, nitrates and fluorides reveals higher levels at the entrance of the reverse osmosis unit than at the outlet. These low values resulting of the role of reverse osmosis which filter much of the electrolytes. For against, at the outlet of the distribution loop the electrolyte content of the different samples were greater than those at the outlet of the reverse osmosis unit. This high electrolyte concentration attests to pollution of the water distribution loop already filtered by reverse osmosis. The interest of this study lies in the fact that it highlights the importance of monitoring the quality of water for hemodialysis and the need for good planning for effective preventive maintenance throughout the water treatment loop within each center.© 2016 International Formulae Group. All rights reserved.Keywords: Hemodialysis, water, nitrates, fluoride, chloride, specific electrode

SIMENS-LIS4SC, a Laboratory Information System for Biological Tests of Sickle Cell Screening and Healthcare

International audienceNeonatal screening and ongoing follow-up of children with sickle cell disease are essential to reduce the mortality caused by this disease. To ensure care continuity, it is essential to include in the patient's record the history and details of biological tests. Thus, it is necessary to provide a Laboratory Information System for electronic management of biological test prescription and results, and the laboratory system must integrate well with Health Information Systems. In this paper, we propose a Laboratory Information System for the management of biological tests for the neonatal screening and healthcare of sickle cell disease in Senegal

Towards an Information System for Sickle Cell Neonatal Screening in Senegal

International audienceSickle cell disease is a major public health problem in Senegal. It is an inherited disease that affects about 300,000 births worldwide each year. There are 70 million people affected worldwide, 80% of whom live in sub-Saharan Africa. In Senegal, 1 in 10 people carries the sickle cell disease gene. This disease requires follow-up from birth and for life. The patient care requires the integration and the analysis of biological, clinical, social, economic data., etc. In this paper, we propose a health information system for data management of the blood sampling from the newborn at the maternity wards and the disease screening at the Center for Research and Ambulatory Care of the Sickle Cell Disease (CERPAD)

Prévalence des dyslipidémies au laboratoire de biochimie du CHU Aristide le Dantec de Dakar, Sénégal

Introduction: l'objectif de cette étude était d'évaluer la prévalence des dyslipidémies chez les patients reçus au laboratoire de Biochimie de l'Hôpital Aristide Le Dantec pour le dosage d'un paramètre lipidique au cours de l'année 2013. Méthodes: il s'agit d'une étude rétrospective portant sur 1356 patients âgés de 10 à 94 ans reçus au laboratoire de Biochimie du CHU Le Dantec de janvier à décembre 2013. Etaient inclus dans l'étude, tous les patients ayant au moins un paramètre du bilan lipidique dont les résultats étaient enregistrés dans le registre du laboratoire. Le cholestérol total, le cholestérol HDL, le cholestérol LDL ainsi que les triglycérides ont été dosés grâce à des méthodes enzymatiques sur un automate de Biochimie de type Cobas Integra 400 (Roche Diagnostics). Résultats: la prévalence des dyslipidémies dans notre population d'étude est de 39,30%. Les prévalences de l'hypercholestérolémie, l'hypoHDLémie, l'hyperLDLémie, l'hypertriglycéridémie et l'hyperlipidémie mixte étaient respectivement : 30,89% ; 7,30% ; 31,19% ; 0,51% ; 7,22%. Les sujets de 40 à 59 ans semblaient être plus exposés et on note une prédominance féminine en ce qui concerne l'hypercholestérolémie (54,17% vs 45,82%), l'hypoHDLémie (54,54% vs45, 45%), et l'hyperlipidémie mixte (51,08% vs 48,97%). Enfin les dyslipidémies étaient fortement corrélées à l'HTA et l'obésité. Conclusion: la forte prévalence des dyslipidémies retrouvée dans notre étude démontre l'intérêt d'étudier la prévalence des facteurs de risque cardio-vasculaires en particulier les dyslipidémies dans la population sénégalaise.The Pan African Medical Journal 2016;2

Dyslipidemia, obesity and other cardiovascular risk factors in the adult population in Senegal

Abstract Introduction: According to the WHO, 50% of deaths worldwide (40.1% in developing countries) are due to chronic non-communicable diseases (NCDs). Of these chronic NCDs, cardiovascular diseases remain the leading cause of death and disability in developed countries. The Framingham study has shown the importance of hypercholesterolemia as a primary risk factor. In Senegal, the epidemiology of dyslipidemia and obesity are still poorly understood due to the lack of comprehensive studies on their impact on the general population. This motivated this study to look into the key epidemiologic and socio-demographic determinants of these risk factors. Methods: It was a cross-sectional descriptive epidemiological survey which included 1037 individuals selected by cluster sampling. Data were collected using a questionnaire following the WHO STEPwise approach. Socio-demographic, health and biomedical variables were collected. P value Results: The average age was 48 years with a female predominance (M: F of 0.6). The literacy rate was 65.2% and 44.7% of participants were from rural areas. The prevalence of hypercholesterolemia, hyperLDLemia, hypoHDLemia, hypertriglyceridemia and mixed hyperlipidemia were 56%, 22.5%, 12.4%, 7.11% and 1.9% respectively. One in four was obese (BMI> 30kg/m2) and 34.8% had abdominal obesity. The main factors significantly associated with dyslipidemia were obesity, urban dwelling, physical inactivity and a family history of dyslipidemia. Conclusion: The prevalence of dyslipidemia, obesity and other risk factors in the population was high needing immediate care for those affected and implementation of prevention strategies