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Epidemiological Profile of Autoimmune Diseases in Thiès, Senegal: About a Descriptive Observational Study over 11 Years in 2 Internal Medicine Departments and a Dermatology Department

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Open Journal of Internal Medicine 2023年第3期13卷 162-172页

作者： Faye Fulgence Abdou Bammo Mariama Guèye Amina Dia Elame Hugues Diallo Bachir Berthé Adama Dioussé Pauline Touré Papa Souleymane diop Madoky Magate diop bernard marcel Ka Mamadou Mourtala Training and Research Unit of Health Sciences Alioune Diop University of Bambey Bambey Senegal Training and Research Unit of Health Sciences Iba Der Thiam University Thiès Senegal Department of Internal Medicine Regional Hospital Thiès Senegal Department of Dermatology Regional and University Hospital Thiès Senegal Department of Internal Medicine Abdou Aziz SyDabakh Hospital Tivaouane Senegal Department of Internal Medicine Saint Jean de Dieu of Thiès Hospital Thiès Senegal

Introduction: Autoimmune diseases are characterized by a very large clinical polymorphism that can lead to a diagnostic wandering. So, we aimed to determine their epidemiological profile outside the context of Dakar (capital of Senegal) where the technical plateau is more elevated. Methodology: We conducted a retrospective descriptive and observational study from January 1, 2007 to December 31, 2017. All patients admitted or followed in outpatient in the Internal Medicine departments of the Saint Jean de Dieu and Regional Hospitals of Thiès as well as in the dermatology department of the CHRT (Regional Hospital Center of Thiès), and who met the MAI criteria (autoimmune diseases) have been included. The data were collected on a standardised sheet and analysed by EPI INFO version 7.2. Results: A total of 121 patients were included out of 25951 records i.e a prevalence of 0.46% in internal medicine departments. In dermatology, out of 31973 patients, 95 had MAIS (systemic autoimmune diseases): 0.29% as hospital prevalence. The average age was 40.7 years in internal medicine departments compared to 37.66 years 14.8 years in the dermatology department. Patients aged 30 to 59 years represented 57.89% of the study population. The sex ratio (H/F) was 0.3 in the internal medicine departments compared to 0.17 in the dermatology department. Circumstances of discovery were incidental in 16.52% and clinical in 3.30%. Biermer disease accounted for 29.75% of organ-specific MAI. Concerning systemic presentations, rheumatoid arthritis (RA) was present in 23.14%. Lupus was more representative in dermatology (65.2%) as well as systemic scleroderma (21%), dermatomyositis (6.3%). Cytopenia was found in 105 patients, showing in detail anemia (42.9%);leukopenia (14.8%);thrombocytopenia (2.4%). Autoantibodies were tested in 58 patients (47.9%). Skin histology was contributory in all cases of systemic scleroderma and in 5 cases of lupus. The main therapy prescribed was corticosteroid therapy

关键词： Systemic Autoimmune Diseases Internal Medicine Dermatology Senegal

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Epidemiological Profile of Autoimmune Diseases in Thiès, Senegal:About a Descriptive Observational Study over 11 Years in 2 Internal Medicine Departments and a Dermatology Department

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Open Journal of Internal Medicine（内科学期刊） 2023年第3期

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Experimental Study of a Quadratic Boost: The Cascaded Connected Single Switch

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Smart Grid and Renewable Energy 2024年第6期15卷 139-148页

作者： Prince Abdoul Aziz Honadia bernard Zouma Adama Ouédraogo Fabé Idrissa Barro Department of Physics and Chemistry Centre Universitaire de Kaya (CU-K) Kaya Burkina Faso Thermal Renewable Energies Laboratory Department of Physics Joseph Ki-Zerbo University Ouagadougou Burkina Faso Semiconductors and Solar Energy Laboratory Department of Physics Faculty of Science and Technique Cheikh Anta Diop University Dakar Senegal

The quadratic boost is studied under its real model. The equations, of the continuous conduction mode, descriptive of this model are established. From these equations, the expressions of the voltage gain and the efficiency are extracted. These two quantities are plotted as a function of the duty cycle in order to appreciate them in different operating points of the transistor. The values of the different components have also been extracted for the fabrication of a prototype of the converter. Thanks to a set of experimental measurements at the input as well as at the output of the prototype converter, the voltage gain and the efficiency could also be observed. These were also plotted for different loads to observe converter behavior. The theoretical curves were compared with the experimental curves which allowed to validate the proposed mathematical models on a large range of duty cycles.

关键词： Voltage Gain Factor Conversion Efficiency Duty Cycle Quadratic Boost

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Evaluation of Early Warning Indicators of ARV Resistance to HIV in the Hospital of Tivaouane from 2008 to 2016

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Advances in Infectious Diseases 2018年第2期8卷 54-63页

作者： Agbogbenkou Tévi Déla-dem Lawson Ndeye Astou Lakhe Haby Dione Papa Souleymane Toure Mamadou Ba Ndeye Biram Niang bernard marcel diop Sylvie Audrey diop-Nyafouna Department of Health Thies University Thies Senegal Infectious and Tropical Diseases Department Fann Teaching University Hospital Dakar Senegal

Introduction: HIV resistance to antiretroviral is currently a global concern, and requires increased surveillance in a context of widespread ARV treatment. Objective: To evaluate early warning indicators of HIV resistance to ARVs in the Hospital of Tivaouane (Senegal) where viral load was not routinely available. Methods: This is a cross-sectional retrospective study from 2008-2016. The etraction tool (May 2010 version) was used to analyze the EWI. Results: We collected 360 HIV positive patients followed on average for 3.57 years ± 3.02. 2009, 2010 and 2012 recorded 100% ARV prescribing rates. Throughout the study period, the percentage of patients lost to follow-up during the first 12 months of treatment was less than 20%. Virtually, all patients were still under primary ARVT over 12-month treatment. All patients (100%) withdrew their ARV drugs on time. No stock storage regarding various classes of ARVs was noted during the study period. Conclusion: At the end of this study we recommend to maintain regular follow-up of EWI, and combine it with the achievement of viral load.

关键词： HIV Resistance EWI Tivaouane

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The Epidemiological, Clinical, Paraclinical and Prognostic Aspects of Severe Malaria at the Regional Hospital of Thies

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Advances in Infectious Diseases 2018年第3期8卷 162-171页

作者： Agbogbenkou Tévi Déla-dem Lawson Madoky Magatte diop Viviane Marie Pierre Cisse Stéphanie Akanni Adama Berthe Papa Souleymane Toure bernard marcel diop Mamadou Mourtalla Ka Department of Health Thies University Thies Senegal Internal Medicine Department Thies Regional Hospital Center Thies Senegal Infectious and Tropical Diseases Department Fann Teaching University Hospital Dakar Senegal

Introduction: Malaria, the first parasitical endemic disease in the world, is a serious disease with 407,000 deaths in Africa in 2016. It is the main cause of morbidity and mortality in Senegal [1] [2]. Methods: Our retrospective study carried out from 1st January 2010 to 31 December 2013, at the department of internal medicine in the regional hospital of Thies was aimed at studying the epidemiological, clinical, paraclinical and prognostic profile of severe malaria in the autochthonous adults with 15 years and more. Results: Over this 3-year period, 57 patients were hospitalized in 1275 patients due to severe malaria that is to say a hospital prevalence of 4.47%. The average age was 64.21. A clear male predominance has been observed, around 61% (34/57) against 39% (23/57) with a sex ratio of 1.6. The highest malarial infestation rate was found at the end of the rainy season and at the beginning of the dry season (September to November). The clinical picture which predominates is the neurological affection which represented 33.3% of the cases. The different aspects of this neurological affection were of coma type, convulsion and prostration in 87%;21.7% and 8.6% respectively. The cerebral malaria was associated or not with other symptoms of severity that are anemia in 41.6%;icterus was represented in 21% of the cases, cardio-vascular collapse in 15.8% and hypoglycemia in 5.5% of the cases. The complications were observed during the hospitalization in 73.6% of the cases with the type of bacterial pneumonia (47.6%) and urinary infections (26.2%). The curative treatment was based on quinine salts through intravenous track in 100% of the case with a shift to the Artemisinin combination therapy (ACT) associated with intense care measures. In our study the whole lethality is 17%. Conclusion: The results of our study shows that the severe forms of malaria are still affecting our tropical endemic area, in spite of the prevention efforts made to fight against this plague. Th

关键词： Malaria Severe Malaria Quinine ACT

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Stroke (Cerebrovascular Accident): Epidemiological, Clinical and Evolving Aspects in the Internal Medicine Department of the Public Health Establishment 1 (EPS1) of Tivaouane

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Open Journal of Internal Medicine 2023年第4期13卷 313-329页

作者： Fulgence Abdou Faye Bachir Mansour Diallo Awa Ba Amina Dia Guèye Abdou Khadre Mbaye Zeinabou Marone Adama Berthé Papa Soulèyemane Touré Madoky Magatte diop bernard marcel diop Mamadou Mourtalla Ka UFR of Health Sciences Alioune Diop University of Bambey Bambey Senegal Department of Internal Medicine Regional Hospital Heinrich Lucké of Diourbel Diourbel Senegal Department of Internal Medicine Abdou Aziz Sy Dabakh Hospital Tivaouane Senegal Internal Medicine Department Regional Hospital of Thiès Thiès Senegal UFR of Health Sciences Iba Der Thiam University of Thiès Thiès Senegal

Introduction: The frequency, severity, cost of treatment, morbidity and mortality of stroke make it a real public health problem. In industrialized countries, strokes are the leading cause of physical disability in adults, the second leading cause of dementia (after Alzheimer’s disease), and the third leading cause of death (after cancer and cardiovascular disease). It’s also a major cause of depression. The objective of our study was to describe the epidemiological, clinical and evolutionary aspects of stroke in the internal medicine department of Tivaouane Hospital. Material and Method: This is a retrospective study carried out from January 1, 2015 to December 31, 2018 on the files of patients hospitalized for stroke in the medical department of the EPS1 in Tivaouane. We took into account all the patients who had a brain CT (computed tomography) scan. We collected data related to socio-demographic characteristics, history, risk factors, reasons for admission, clinical signs, paraclinical examinations, as well as evolution. Results: Out of 1999 patients, 206 files of patients with stroke were collected, i.e. a proportion of 10.3%. Our study population had a mean age of 65.53 years [16 - 97 years]. We noted a clear predominance of women (50.5%). The majority of the population came from the outskirts of Tivaouane (56.7%). Risk factors for stroke were dominated by hypertension (90.3%), dyslipidemia (19.4%), previous stroke (18.9%), and diabetes (16%). The clinical signs were dominated by a motor deficit (94.1%), speech disorders (67.4%) and consciousness disorders (47%). Ischemic strokes were predominant (65%) over hemorrhagic strokes (34.5%). The outcome was generally unfavorable with 14.6% total recovery, 58.7% recovery with sequelae and a case fatality of 26.7%. Conclusion: It emerges from this study that strokes still remain a real public health problem. Knowledge of populations of risk factors as well as their proper management is fundamental in primary preventio

关键词： Cerebrovascular Accident Epidemiology Risk Factors Tivaouane EPS1

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Incidence and Factors Associated with the Switch to the Second Line Antiretroviral Treatment at the Ambulatory Treatment Center (CTA) in Dakar

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Health 2016年第14期8卷 1566-1575页

作者： Ndeye Fatou Ngom-Gueye Gilbert Batista Abdoul Aziz Ndiaye Assane Diouf KA. Daye Alioune Badara Tall Awa Diouf Kine Ndiaye Makhtar Ndiaga diop Mountaga Dia Cheikh Tacko diop Awa Gaye Cheikh Tidiane Ndour Moussa Seydi Lamine Gueye bernard marcel diop Papa Salif Sow Ambulatory Treatment Center Fann University Teaching Hospital Dakar Senegal Department of Community Health Alioune Diop University Bambey Senegal Department of Infectious Diseases Fann University Teaching Hospital Dakar Senegal

Introduction: Over the past years, efforts have been made to expand access to antiretroviral combinations (cART) in low-income countries. However, major concerns are noted with drug resistance emergence, as treatment failure result and need to introduce a second line treatment, more expensive and difficult to implement. The objective was to study the incidence of switch to second line, reasons for switch and risk factors using a cohort of people living with HIV in an Ambulatory Treatment Center in Dakar. Methodology: This was a cohort study of people living with HIV under cART from January 2004 to December 2013. Naive patients monitored for at least six months, regardless of their profile and regimen with baseline CD4 counts Results: The median age of the 827 patients included was 44 [IQR = 18 - 78]. The switch to second-line treatment was observed in 72 patients (8.7%) after an average of 38.5 months of follow-up. The overall incidence rate of switch to second line of antiretroviral treatment was 1.59 per 100 persons-years. Most of changes in first-line treatment were motivated by virological failures (n = 60, 83.3%) under treatment with AZT/3TC/NVP (n = 25, 34.7%) or AZT/3TC/EFV21 (29.2%). 9.7% of switch occurred after immunological failure, 1.4% after clinical failure, 4.2% after severe toxicity and 1.4% was not documented. Predictive factors identifying failures at the end of the multivariate analysis were age Conclusions: In total, CTA identified a low incidence rate of treatment failure of the first line of treatment. Associated risk factors were age 3 and high viral load at treatment initiation.

关键词： Incidence Associated Factors Switch to 2nd Line cART CTA Dakar

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Evaluation of Thromboprophylaxis Practice in Hospitalized Patients in the Medical Department of Saint Jean de Dieu Hospital of Thies, Senegal

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World Journal of Cardiovascular Diseases 2020年第5期10卷 313-318页

作者： Désiré Alain Affangla Korko Sélalom Lynda Adomayakpor Stéphanie Akanni Jean-Michel Amath Dione Hugues Elie Elame Ngwa Djibril Marie Ba Mohamed Leye Joao Armindo Da Veiga bernard marcel diop Hôpital Saint Jean de Dieu Thiès Sénégal Unité de Formation et de Recherche des sciences de la santé Université de Thiès Thiès Sénégal

Introduction: Venous thromboembolism disease (VTE) is a common complication of hospitalization. Objective: To assess the practice of thromboprophylaxis in hospitalized patients in the department of medicine. Patients and Methods: It is an observational cross-sectional study conducted from 01 February to 31 March 2019 in the medical departments of the Saint Jean de Dieu Hospital of Thies. All the patients hospitalized with at least 18 years of age were included. The thromboembolic risk was assessed with the Padua score and thromboprophylaxis?assessed according to the ACCP 2012 recommendations. Results: One hundred and forty four patients were included. Seventy-one (49.3%) were in the high thromboembolic risk category. The most frequently reported risk factors were mobility impairment (n = 72;50%), age of 70 years or above (n = 35;24.3%), heart failure (n = 23;16%), acute infections (n = 14;9.7%) and cancers (n = 13;9.02%). The prevention of venous thromboembolism was practiced in 25 of the 71 patients with high thromboembolic risk or a rate of 35.2%. Thromboprophylaxis was exclusively drug-based with Enoxaparin. Conclusion: The practice of prophylaxis for VTE was low in the medical departments. Efforts still need to be made to reduce the high rate of thromboembolic complications associated with hospitalization.

关键词： Venous Thromboembolism Disease Thromboprophylaxis Heparin

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Stroke (Cerebrovascular Accident): Epidemiological, Clinical and Evolving Aspects in the Internal Medicine Department of the Public Health Establishment 1 (EPS1) of Tivaouane

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Open Journal of Internal Medicine（内科学期刊） 2023年第4期

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Silicon Solar Cell Space Charge Region and Capacitance Behavior under Electric Field

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Energy and Power Engineering 2021年第1期13卷 41-50页

作者： bernard Zouma Fabé Idrissa Barro Prince Abdoul Aziz Honadia Department of Physics Thermal Renewable Energies Laboratory Training and Research Unit in Exact and Applied Sciences Joseph Ki-Zerbo University Ouagadougou Burkina Faso Department of Physics Semiconductors and Solar Energy Laboratory Faculty of Science and Technique Cheikh Anta Diop University Dakar Senegal

This paper investigates theoretically the behavior of the space charge region of a silicon solar cell and its associated capacitance under the effect of an external electric field. The purpose of this work is to show that under illumination the solar cell’s space charge region width varies with both operating point and the external induced electric field and how the solar cell capacitance varies with the space charge region width. Based on a 1D modelling of the quasi-neutral p-base, the space charge region width is determined and the associated capacitance is calculated taking into account the external electric field and the junction dynamic velocity. Based on the above calculations and simulations conducted with Mathcad, we confirmed the linear dependence of the inverse capacitance with space charge region width for thin space charge region and we exhibit an exponential dependence for large space charge region.

关键词： Solar Cell Electric Field Space Charge Region Capacitance

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