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Search Results: 1 - 10 of 166 matches for " Diouf Boucar "
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Current indication of plasma exchanges in nephrology: A systematic review
Seck Sidy,Bertrand Dussol,Boucar Diouf
Saudi Journal of Kidney Diseases and Transplantation , 2011,
Abstract: Therapeutic plasma exchange (TPE) has been firstly performed with centrifugation devices used in blood banking procedures. Nowadays, TPE is increasingly performed in intensive care units using hemodiafiltration generators that ensure better efficiency and simplicity. However, prescription for the different medical pathologies depends on weak evidence-based recommen-dations, and is often guided by the clinician′s own experience. In this review, we briefly recall the rationale of TPE prescription before discussing the evidence level of common indications of TPE in nephrology. Currently, strong evidence-based data for the benefit of TPE is clearly demonstrated in renal diseases such as hemolytic uremic syndrome, anti-glomerular basement membrane vasculitis, and recurrent glomerulonephritis after kidney transplantation and management of humoral renal allograft rejection in high-risk recipients. However, the other indications of TPE, such as renal vasculitis associated with anti-neutrophil cytoplasmic antibodies, mixed cryoglobulinemia, periarte-ritis nodosa, and acute renal failure in myeloma are still controversial. Finally, TPE have been found to be clearly inefficient in lupus nephritis, except for patients with associated thrombotic mic-roangiopathy or catastrophic antiphospholipid antibodies syndrome. More randomized clinical trials are required to precisely place TPE in the management of renal diseases. Meanwhile, the decision to use this burdensome and costly therapy should be individualized according to its proven benefits and potential complications.
Factors Related to Depression in Patients Undergoing Hemodialysis Due to Renal Failure in Senegal  [PDF]
Ndiaye Ndongo Ndèye Dialé, Samba Oumar Mamadou, Sylla Aida, Thiam Mamadou Habib, Diouf Boucar
Psychology (PSYCH) , 2015, DOI: 10.4236/psych.2015.64038
Abstract: Depression is often encountered with chronic diseases such as renal failure, for which the prognosis has been improved by hemodialysis. The occurrence of depression with these chronic ailments is related to several factors. The aim of this work was to identify risk factors for depression in a population of patients undergoing hemodialysis due to renal failure. We conducted a cross-sectional descriptive study from 1st January 2012 to 31st May 2014 in the setting of the hemodialysis unit of the Nephrology Department of the Aristide Le Dantec Hospital in Dakar, Senegal. The study population was comprised of chronic hemodialysis patients who had freely and unequivocally provided their informed consent. The self-reporting Beck Depression Inventory (BDI) short-form for depression was used. This short-form version of the BDI was a tool designed to allow the practitioner to perform a rapid assessment of depression. It consisted of 13 items. After administering this assessment, we also collected all the epidemiological and clinical data for this patient population using a pre-established form. Eight-three patients were recruited during the course of the study. These comprised 39 males (47%) and 44 females (53%), i.e. a sex ratio of 0.88. The mean age was 44.73 years, ranging from 18 to 79. The incidence of depression, according to the shortform BDI, for this population was 57.8%. The duration of the dialysis treatment and a diabetic background constituted the principal factors that correlated significantly with depression. Depression correlated neither with age, gender, nor marital status. Professional engagement, level of education, socioeconomic status and prior incidences of depression also did not correlate with the occurrence of depression. In this study, depression affected more than half of the individuals with renal failure. The principal risk factors were the duration of the dialysis treatment and a diabetic background.
Efficiency Control in Iridium Complex-Based Phosphorescent Light-Emitting Diodes
Boucar Diouf,Woo Sik Jeon,Ramchandra Pode,Jang Hyuk Kwon
Advances in Materials Science and Engineering , 2012, DOI: 10.1155/2012/794674
Abstract: Key factors to control the efficiency in iridium doped red and green phosphorescent light emitting diodes (PhOLEDs) are discussed in this review: exciton confinement, charge trapping, dopant concentration and dopant molecular structure. They are not independent from each other but we attempt to present each of them in a situation where its specific effects are predominant. A good efficiency in PhOLEDs requires the triplet energy of host molecules to be sufficiently high to confine the triplet excitons within the emitting layer (EML). Furthermore, triplet excitons must be retained within the EML and should not drift into the nonradiative levels of the electron or hole transport layer (resp., ETL or HTL); this is achieved by carefully choosing the EML’s adjacent layers. We prove how reducing charge trapping results in higher efficiency in PhOLEDs. We show that there is an ideal concentration for a maximum efficiency of PhOLEDs. Finally, we present the effects of molecular structure on the efficiency of PhOLEDs using red iridium complex dopant with different modifications on the ligand to tune its highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) energies. 1. Introduction Achievements in organic light emitting diodes (OLEDs) lead to their integration as displays in several electronic devices and make them serious candidates to replace widely used LCD panels. Extensive research efforts have been made for higher achievements in organic displays both in industrial and academic fields [1–10]. In organic light-emitting devices (OLEDs), injected electrons and holes in the emitter will attract each other to form excitons [11–20]. Spin statistics demonstrate that the ratio between singlet and triplet excitons is one to three. In fluorescent OLEDs only the singlet excitons can generate radiative recombinations, giving a maximum inherent quantum efficiency of 25% [21–23], with no phosphorescent light radiation. On the other hand, triplet emitters can harvest both singlet and triplet radiative recombinations reaching a theoretical internal quantum efficiency of 100% [24–26]. Iridium and platinum complexes present good phosphorescent emission properties [27–29]. Iridium (III) complexes are the most widely used dopants in PhOLEDs because of their higher triplet efficiency [30–35]. PhOLEDs harvest both singlet and triplet emissions, making it possible to reach high efficiency devices. However, their operation and efficient implementation are more complex than for the fluorescent OLEDs. To achieve high efficiency in PhOLEDs, the
Acute Renal Failure in Adults in Dakar
El Hadji Fary,Diouf Boucar,Niang Abdou,Ndiaye Mohamed
Saudi Journal of Kidney Diseases and Transplantation , 1999,
Abstract:
Prevalence and the Risk Factors of Renal Insufficiency in the City of Saint Louis in Senegal  [PDF]
Ahmed Tall Lemrabott, Mouhamadou Moustapha Cisse, Elhadji Fary Ka, Sidy Mohamed Seck, Maria Faye, Moussa Sarr, Ngoné Diaba Gaye, Alassane Mbaye, Abdou Niang, Boucar Diouf, Abdoul Kane
Open Journal of Nephrology (OJNeph) , 2015, DOI: 10.4236/ojneph.2015.53013
Abstract: Background: The true scale of renal insufficiency (RI) in Sub-Saharan Africa remains unknown due to the lack of national registries. The aim of this study is to describe the epidemiological characteristics of renal insufficiency in urban areas in Saint Louis of Senegal. Materials and Methods: It is an observational, cross-sectional and descriptive study. The study was conducted during 27 days starting from 3 to 30 May 2010. All senegalese residents of Saint Louis (older than 15 years at the time of the study) in whom creatinine clearance was performed were included in the study. The sampling method used was a systematic random sampling, stratified cluster. The survey was designed by an expert comitee based on STEPS survey of the World Health Organization. RI was defined as a glomerular filtration rate (GFR) < 60 ml/min/1.73m2. Results: Among 1424 people initially selected a final selection of 1416 was made. The sex ratio was 0.45. The mean age was 43.4 ± 17.8 years. The overall prevalence of renal insufficiency according to MDRD (Modification of diet in renal disease) formula was 181 cases or 12.7%. The mean age of the people with renal insufficiency was 47.6 ± 17.4 years. Renal insufficiency was correlated to height blood pressure (p = 0.01) and Physical inactivity (p = 0.0001). The prevalence of renal insufficiency was higher in diabetics (71.4%) and obese people (66.6%) than in non-diabetics (64.9%) and non-obese people (56.5%), although the difference was not statistically significant. Dyslipidemia and smoking were not correlated to the risk of occurrence of IR. Conclusions: This study reports the increasing magnitude of RI and its risk factors in the city of Saint Louis in Senegal. It is imperative to establish à national prevention strategies to avoid the dizzying growth of this scourge.
Renal Cortical Necrosis: An Unusual Complication of Plasmodium malariae Malaria  [PDF]
Ahmed Tall Lemrabott, Mouhamadou Moustapha Cissé, Sidy Mohamed Seck, Elhadji Fary Ka, Maria Faye, Aliou Ndongo, Cherif Dial, Younoussa Keita, Khodia Fall, Abdou Niang, Boucar Diouf
Open Journal of Nephrology (OJNeph) , 2015, DOI: 10.4236/ojneph.2015.54015
Abstract: Renal cortical necrosis (RCN) is anecdotal in malaria. To our knowledge, RCN secondary to Plasmodium malariae has not yet been published. We report a case of severe malaria complicated by RCN. A 29 year old Senegalese patient was transferred to our department for anuria in a context of severe malaria. The diagnosis was RCN secondary to a severe Plasmodium malariae malaria. Physical examination showed anuria, anaemic syndrome, haemorrhagic syndrome and a generally impaired condition. There was a normocytic normochromic anaemia aplastic, thrombocytopenia leukocytosis of 11.580/mm3, serum creatinine of 12.45 mg/dl and blood urea of 252 mg/dl. The Plasmodium malariae had been shown to thick blood film with high parasite density. The molecular study was able to confirm the infestation of this parasite. Treatment consisted of four haemodialysis sessions and antimalarial molecules. Initial evolution was favourable with a recovery through diuresis and a partial improvement in renal function. Given the persistence of impaired renal function, a renal biopsy was performed. This confirmed the RCN. At last consultation, he had no symptoms and his last glomerular filtration rate (GFR) was 30 mL/min/1.73 m2.
Tuberculosis among Chronic Hemodialysis Patients: A Senegalese Single Center Experience  [PDF]
Mouhamadou Moustapha Cisse, Rachid El Kabouss, Yaya Kane, Sidy Mouhamed Seck, Ahmed Tall Lemrabott, Maria Faye, El Hadji Fary Ka, Ansoumana Diatta, Abdou Niang, Boucar Diouf
Open Journal of Nephrology (OJNeph) , 2015, DOI: 10.4236/ojneph.2015.54017
Abstract: Summary: Tuberculosis is a common infectious disease in chronic hemodialysis due to alteration of the immune system associated with chronic kidney disease. The objectives of this study are to determine the prevalence of tuberculosis in chronic hemodialysis patients and to identify its diagnostic and therapeutic difficulties. Methods and patients: This was a descriptive retrospective study over a period of 20 years (1994-2014). It includes the records of periodic hemodialysis patients in the Nephrology Department of the Aristide Le Dantec University Teaching Hospital in Dakar which clinical symptoms and laboratory favor tuberculosis. Results: Of 258 chronic hemodialysis patients treated in Hospital Aristide Le Dantec hemodialysis center, 29 cases (11.4%) of tuberculosis disease are diagnosed. The mean age is 43.21 ± 12.48 years, and the sex-ratio is 0.8. The median time to onset of tuberculosis after initiation of hemodialysis is 22.86 ± 28.86 months. The diagnosis of tuberculosis is sure only in 17% of cases. Extra-pulmonary sites are found in 79% of cases. The average duration of treatment is 9.39 ± 1.64 months (6 - 13 months). Various treatment protocols are adopted. Mortality is 21%, 50% due to disseminated tuberculosis. Conclusion: The diagnosis of tuberculosis in the chronic hemodialysis patients is often difficult due to the atypical symptoms, the frequency of extra-pulmonary location and the lack of evidence of sure diagnosis.
Epidemiology of Sleep Disorders among Chronic Hemodialysis Patients in Senegal: A Multicentric Study  [PDF]
Zeinabou Maiga Moussa Tondi, Sidy Mohamed Seck, Elhadj Fary Ka, Mouhamadou Moustapha Cisse, Amadou Diop Dia, Diatou Gueye Dia, Boucar Diouf, Lamine Gueye
Health (Health) , 2016, DOI: 10.4236/health.2016.81006
Abstract: Introduction: Sleep disorders (SD) are common dialysis patients and can impact their quality of life. In previous studies, black ethnicity was associated with higher incidence of SD but a few data are available in African patients. This study aimed to describe prevalence and risk factors of SD among Senegalese dialysis patients. Methods: We performed a cross-sectional study between February 15th and April 30th 2012 including 127 patients (75 males and 52 females) aged 46.8 ± 16.9 (16 - 85 years) and dialysed since >6 months in three dialysis centres. For each patient, we assessed insomnia according to international definition, obstructive sleep apnea syndrome (OSAS) with the Berlin questionnaire, restless leg syndrome (RLS) using abridged version of Cambridge-Hopkins RLS questionnaire, and excessive daytime sleepiness (EDS) with Epworth sleepiness scale. Logistic multivariate regression was used to identify factors associated with different SD. Results: Overall prevalence of SD was 88% comprising: insomnia (64.3%), OSAS (49.1%), RLS (24.1%) and EDS (20.5%). Forty-two patients presented at least two disorders. No difference was noticed in prevalence of SD between genders (p = 0.14). Level of blood pressure were not different across patients with and without SD. Insomnia correlated with anemia, inflammation and EDS. OSAS was associated with age ≥50 years, EDS and neck circumference ≥25 cm. RLS correlated with anemia and EDS. Other parameters such as gender, dialysis vintage, KT/V, obesity, diabetes status and hypoalbuminemia were not associated with the different SD. The majority of patients had not been diagnosed before the survey and none of them was under treatment. Conclusions: Our findings are compatible with high prevalence of sleep disorders reported in other populations. Insomnia and OSAS are the most frequent SD but some patients combined many disorders. Nephrologists should be more aware of these SD in order to detect them early and provide efficient treatment.
Quality of Life of Patients on Peritoneal Dialysis in Dakar: A Senegalese Single Centre Experience  [PDF]
Kane Yaya, Cisse Mouhamadou Moustapha, Seck Sidy Mohamed, Lemrabott Ahmed Tall, Faye Maria, Hounsounou Christian, Diallo Kalilou, Ka El Hadji Fary, Niang Abdou, Diouf Boucar
Open Journal of Nephrology (OJNeph) , 2016, DOI: 10.4236/ojneph.2016.62005
Abstract: Introduction: Measuring the quality of life (QOL) in recent years has become an indispensable tool in monitoring patients suffering from chronic diseases. We conducted this study to assess QOL of patients undergoing peritoneal dialysis in Dakar, and to identify associated factors. Patients and Methods: This is a cross-sectional study which was carried out from 10 to 30 June, 2011 in the peritoneal dialysis unit at university hospital in Dakar. We included all patients with end-stage renal disease (ESRD) of any age, who were on PD since at least six months and who gave their consent. The QOL was assessed using the Kidney Disease Quality of Life Short-Form 1.2 (KDQoL-SF). Results: Sixteen patients were included with a mean age of 50.25 ± 13.48 years and a sex-ratio of 1.27. Considering SF-36, the overall mean score (SMG) was 60.11 ± 15.96 with a Mean Physical Component Summary Scale of 53.66 ± 16.98 and a Mental Component Summary Scale of 70.85 ± 6.14. Concerning the KDQoL-SF, the global mean score was 61.83 ± 19.35 with a mean physical score of 50.55 ± 16.52 and a mean mental score of 62.52 ± 21.53. The mean dialysis specific dimension score was 62.52 ± 21.53 and the mean mental health score was 85.93 ± 12.06. Age, weight, level of instruction and social support were correlated with a worse QOL. Conclusion: This study showed an alteration of our PD patients’ QOL, particularly in their physical health. However, the number of patients included in the study is not enough to permit a formal conclusion.
Epidemiological Profile of Chronic Kidney Disease at the General Hospital of National Reference of N’Djamena (Chad)  [PDF]
Ibrahim Hamat, Guillaume Mahamat Abderraman, Zeinab Ma?ga Moussa Tondi, Mahamat Youssouf, Mouhammadou Moustapha Cisse, Fotclossou Tara, Elhaj Fary Ka, Abdou Niang, Boucar Diouf
Open Journal of Nephrology (OJNeph) , 2016, DOI: 10.4236/ojneph.2016.63010
Abstract: Introduction: Chronic renal failure is a disease that affects many patients worldwide and increasingly in Africa. At the end of 2003, about 1.1 million people were suffering from End-Stage Renal Disease (ESRD) and were treated with periodic dialysis [12]. In Africa, CKF represents 2% to 10% of hospital admissions and is responsible for 4% to 22% of deaths [14]. So, this study is conducted for the first time in Chad, with the aims to determine the prevalence of CKD. Methods: This was a retrospective, descriptive and analytical study over a period of 12 months from April 29, 2011 to April 28, 2012. All patients with chronic renal failure regardless of etiology and stage of chronic kidney disease were included in the study. Chronic renal failure was defined as a glomerular filtration rate below 60 ml/min/1.73m (MDRD) for more than 3 months. This study was conducted in several departments of the National General Reference Hospital (NGRH) of N’Djamena. Result: Among 2039 inpatients, 195 patients had chronic renal failure, as a frequency of 9.6%. The average age of our patients was 51 ± 16.8 years, ranging from 11 to 85 years. Male predominance was noted to be 59% of men against 41% of women. We noted that high blood pressure accounted for 66.2% (N = 129) of cases, diabetes in 48.2% (N = 94), alcoholism in 28.7% (N = 56), smoking in 14.9% (N = 29) and the association alcoholism-smoking in 19.5% (N = 38). Hypertension was the leading cause of chronic renal failure (66.2%). All patients had a serum creatinine and creatinine clearance was assessed. Among them, we noted 57 patients (29%) with end-stage renal failure. The average calcium and phosphate serum were 1.8 mmol/l and 1.6 mmol/l, respectively. We noted that 120 patients as 61.5%, currently took herbal medicine. 48 out of 57 of our patients with ESRD as 24.6% of patients in the study had received replacement therapy (hemodialysis) with 12.5% of deaths. Conclusion: Chad, who compiled the first study with 195 patients at the General Hospital of N’Djamena National Reference over a period of one year has objectified a prevalence of chronic renal failure of 9.6%.
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