[Percutaneous coronary intervention in the management of acute coronary syndromes in Senegal : Challenges and results]. / Angioplastie coronaire dans la prise en charge des syndromes coronariens Aigus au Sénégal : défis et résultats.

INTRODUCTION: Percutaneous coronary intervention (PCI) remains a major therapeutic tool in the management of acute coronary syndromes (ACS). However, it is not widely practiced in sub-Saharan Africa, particularly for the management of ACS. The availability of a catheterization laboratory for 24-hour management of ACS in Dakar is an important step in improving the prognosis of patients. The objective of our study was to evaluate the clinical and prognostic profile of patients presenting an ACS and treated by PCI. PATIENTS AND METHODS: This is a retrospective study that included all patients who underwent PCI for ACS at hospital principal Dakar during the period from January 2019 to December 2020. RESULTS: Our study included 112 patients with a mean age of 60 years (extremes 31-96 years) and a male predominance (sex ratio 4.09). Cardiovascular risk factors were dominated by hypertension (47.3%) and smoking (39.3%). Chest pain was present in 97% of patients. Left ventricular systolic function was impaired in 56 patients with a mean of 50% and extremes of 20 and 78%. Thrombolysis with streptokinase was used in 13 patients with STEMI. The majority of coronary angiogram (95%) were performed between 8 am and 5 pm. The radial route was the most commonly used (85.7%). Double vessel coronary artery disease was predominant (39,3%) and the left anterior descending artery was the most affected (60.7%). The PCI was performed in all patients and in more than half of the cases (55%) within 12 hours of delay. The PCI success rate was 96.4%. Sixty-seven patients (59.8%) underwent balloon predilation. PCI was performed with a drug-eluting stent in the majority of patients (92.8%). The outcome was favorable in 96.4% of the patients, but there were 3 deaths (2.7%). CONCLUSION: Treatment of ACS by PCI is a reality in Senegal with a considerable success rate. However, intervention delays remain one of the major challenges of this management.

Operational and structural factors influencing enrolment in community-based health insurance schemes: an observational study using 12 waves of nationwide panel data from Senegal.

Community-based health insurance (CBHI) has been implemented in many low- and middle-income countries to increase financial risk protection in populations without access to formal health insurance. While the design of such social programmes is fundamental to ensuring equitable access to care, little is known about the operational and structural factors influencing enrolment in CBHI schemes. In this study, we took advantage of newly established data monitoring requirements in Senegal to explore the association between the operational capacity and structure of CBHI schemes-also termed 'mutual health organizations' (MHO) in francophone countries-and their enrolment levels. The dataset comprised 12 waves of quarterly data over 2017-2019 and covered all 676 MHOs registered in the country. Primary analyses were conducted using dynamic panel data regression analysis. We found that higher operational capacity significantly predicted higher performance: enrolment was positively associated with the presence of a salaried manager at the MHO level (12% more total enrolees, 23% more poor members) and with stronger cooperation between MHOs and local health posts (for each additional contract signed, total enrolees and poor members increased by 7% and 5%, respectively). However, higher operational capacity was only modestly associated with higher sustainability proxied by the proportion of enrolees up to date with premium payment. We also found that structural factors were influential, with MHOs located within a health facility enrolling fewer poor members (-16%). Sensitivity analyses showed that these associations were robust. Our findings suggest that policies aimed at professionalizing and reinforcing the operational capacity of MHOs could accelerate the expansion of CBHI coverage, including in the most impoverished populations. However, they also suggest that increasing operational capacity alone may be insufficient to make CBHI schemes sustainable over time.

Acute coronary syndrome complicated by cardiogenic shock in a young adult: a case report from Dakar, Senegal.

Coronary artery disease is the leading cause of cardiovascular deaths worldwide. It is becoming a major concern in developing countries, partly due to the adoption of Western lifestyles. It affects young adults as well as older patients over 45 years of age. In this report, we present a case of cardiogenic shock related to myocardial infarction in a young adult. He completed cardiac rehabilitation after the surgery. The outcome was favourable at the six-month follow up.

Sudden Cardiac Death Following Thrombolysis in a Young Woman with Spontaneous Coronary Artery Dissection: A Case Report.

BACKGROUND Spontaneous coronary artery dissection (SCAD) is a well-known cause of acute coronary syndrome. ST-segment elevation myocardial infarction (STEMI) is the most common presentation of SCAD, which can be complicated by sudden cardiac death (SCD). Conservative management is the cornerstone of treatment except in case of ongoing ischemia or large myocardial compromise. CASE REPORT A 34-year-old woman presented with an anterior STEMI, diagnosed by the Emergency Medical Service (EMS) team, which performed fibrinolysis. SCD resulting from ventricular fibrillation occurred soon after thrombolysis was started. Her pulsed was palpable following defibrillation, and she was immediately intubated. A coronary angiogram (CA) showed total occlusion with dye staining contrast of the proximal left anterior descending (LAD) coronary artery. Echocardiogram showed a severe drop in the left ventricular ejection fraction (LVEF 20%). She was treated with dobutamine and intra-aortic balloon pump implantation because of her poor hemodynamic status. Rescue angioplasty was performed with a drug-eluting stent implanted from the left main stem toward the proximal LAD. However, she developed hemorrhagic shock due to active liver bleeding that was surgically treated. At 3 months, she was asymptomatic, her LVEF had improved (45%), and elective CA showed quite normal coronary arteries. Optical coherence tomography showed residual hematoma as "lunar crescent" and stent under-expansion. The latter was fixed by post-dilatations. CONCLUSIONS Our case adds to the evidence that thrombolysis leads to poor outcomes in patients with SCAD, as reported in numerous reports. OCT was used to confirm, a posteriori, the diagnosis of SCAD. Rescue angioplasty was necessary in our patient due to poor hemodynamic status following unsuccessful fibrinolysis.

Clinical Presentation, Risk Factor, and Outcomes of Acute Coronary Syndrome in Women at an Urban Referral Center in Dakar, Senegal.

BACKGROUND: Cardiovascular disease is on the rise in Sub-Saharan countries. Recently, consistent studies have reported sex differences in the epidemiology of acute coronary syndrome (ACS). Although, data on the incidence of ACS in Sub-Saharan countries are not rare, few focused closely on women. OBJECTIVES: The purpose of this study was to examine risk factors, clinical presentations, and management strategies in women with ACS. METHODS: This was a retrospective study conducted at the Cardiology Department of Principal Hospital of Dakar over a period of 60 months (January 1, 2010, to December 31, 2014), in Dakar, Senegal. Medical records of female subjects admitted for ACS on the basis of anginal pain at rest, suggestive electrocardiographic changes, and elevated troponin I levels were included. We collected and analyzed the epidemiological, clinical, paraclinical, and evolutionary data of the patients. RESULTS: Hospital prevalence of ACS in women was 2.32%, meaning 38.1% of patients were admitted for ACS during the same period. The mean age of patients was 68.8 ± 9.5 years; 52% of them were aged between 60 and 69 years. The risk factors in our patients were dominated by hypertension found (63.3%) and diabetes (54.1%). Active smoking was found in 6 patients (6.1%). One-half of patients had more than 1 risk factor. Chest pain was present in 94 patients (95.9%). The average time delay before medical care was administered was 53.9 ± 18 h. Thirty patients showed signs of left ventricular failure (Killip classes I and II). Electrocardiography revealed ACS with persistent ST-segment elevation in 53 patients (54.1%) and non-ST-segment elevation ACS in 45 patients (45.9%). Mean troponin I level was 1.68 ± 2.3 ng/ml. Doppler echocardiography revealed impaired segmental kinetics in more than one-half of patients. The mean ventricular ejection fraction was 43.8 ± 10.1%. Thrombolysis was performed in 10 patients, accounting for 10.2% of patients with ST-segment elevation. The evolution during hospitalization after a mean hospital stay of 9.5 ± 3.7 days was favorable in 66 patients (67.3%). Six deaths (6.1%) were recorded. Complications was dominated by pulmonary edema. CONCLUSIONS: Our study confirms that ACS is not a "man's only" disease in Sub-Saharan countries. The major concern is that there appeared to be continuing evidence of suboptimal treatment and intervention in women with ACS in current practice.

Infective endocarditis in Principal Hospital of Dakar: a retrospective study of 42 cases over 10 years.

Infective Endocarditis (IE) is an endocardial infection usually caused by bacteria that affects not only the native heart valves but also, with increasing frequency intravascular implanted devices and congenital heart diseases. Despite medical advances, IE remains a life-threatening disease with substantial morbidity and mortality. In Africa, its diagnosis and treatment are still a major challenge in clinical practice. The objective of this work was to study the epidemiological, clinical features, diagnostic techniques currently used in medical practice and the range of micro-organisms that are responsible. This was a retrospective study done at Principal Hospital of Dakar. We include all patients who were admitted with clinical manifestations of definite or possible IE according to the extended DUKE criteria between January 1st, 2005 and December 31st, 2014. We collected and analyzed epidemiological, clinical, paraclinical and outcomes data of 42 patients. Hospital prevalence of IE was 0.078% (42/53711). The mean age was 27.5+/- 18 years with a sex ratio (M/F) of 0.55. IE were more common in patients with damaged or abnormal heart valves (78.6%) and in thoses with underlying structural defects (14.3%). The most common presenting symptoms were fever (90%) and cardiac murmurs (81%). Extracardiac clinical manifestations were very rare. The usual laboratory parameters of inflammation were elevated in 90% of patients. Blood cultures were negative in 50% of cases and positive in 21.4%. The main organism found was Staphylococcus aureus. Echocardiography found vegetations in 95.2% of cases, chamber enlargement in 73.8% and mitral regurgiation in 83.3%. Broad-spectrum penicillins including ampicillin and gentamycine were used for all patients. Major complications were heart failure (47.6%). Strokes and cerebral abcess (23.8%) and Vascular emboli 14.3%. Hospital mortality was 31%. IE remains a life-threatening disease with hight mortality despites improved techniques of diagnosis and modern antibiotics.

Cardiovascular disease and ABO blood-groups in Africans. Are blood-group A individuals at higher risk of ischemic disease?: A pilot study.

BACKGROUND: Since the discovery of the ABO blood group system by Karl Landsteiner in 1901, several reports have suggested an important involvement of the ABO blood group system in the susceptibility to thrombosis. Assessing that non-O blood groups in particular A blood group confer a higher risk of venous and arterial thrombosis than group O.Epidemiologic data are typically not available for all racial and ethnics groups.The purpose of this pilot study was to identify a link between ABO blood group and ischemic disease (ID) in Africans, and to analyze whether A blood group individuals were at higher risk of ischemic disease or not. METHODS: A total of 299 medical records of patients over a three-year period admitted to the cardiology and internal medicine department of military hospital of Ouakam in Senegal were reviewed. We studied data on age, gender, past history of hypertension, diabetes, smoking, sedentarism, obesity, hyperlipidemia, use of estrogen-progestin contraceptives and blood group distribution.In each blood group type, we evaluated the prevalence of ischemic and non-ischemic cardiovascular disease. The medical records were then stratified into two categories to evaluate incidence of ischemic disease: Group 1: Patients carrying blood-group A and Group 2: Patients carrying blood group non-A (O, AB and B). RESULTS: Of the 299 patients whose medical records were reviewed, 92 (30.8%) were carrying blood group A, 175 (58.5%) had blood group O, 13 (4.3%) had blood group B, and 19 (6.4%) had blood group AB.The diagnosis of ischemic disease (ID) was higher in patients with blood group A (61.2%) than in other blood groups, and the diagnosis of non-ischemic disease (NID) was higher in patients with blood group O (73.6%) compared to other groups. In patients with blood group B or AB compared to non-B or non-AB, respectively there was no statistically significant difference in ID incidence.Main risk factor for ID was smoking (56.5%), hypertension (18.4%) and diabetes (14.3%).In our study, there was no statistical difference between blood group A and non-A in myocardial infarction (MI) incidence (p = 0.09, 95% CI = 0.99-2.83) but a statistically significant difference between blood group A and non-A in stroke and coronary artery disease (CAD) incidence (p < 0.0001, 95% CI = 1.80-3.37 and p < 0.0001 95% CI = 1.82-3.41 respectively) was found.The incidence of ID in men was significantly higher in blood group A (95% CI = 2.26-4.57, p < 0.0001) compared with non-A group, while there was no statistically significant difference in women (p = 0.35). However, an overall effect was detected to be statistically significant regardless of gender (p < 0.0001). CONCLUSION: Our study suggests an association between blood group A and ID in sub-Sahara Africans.In African countries, where most of health facilities are understaffed, more rigorous studies with a larger population are needed to give a high level of evidence to confirm this association in order to establish the need to be more aggressive in risk factor control in these individuals.

[Overdose in Vitamin K antagonists administration in Dakar: epidemiological, clinical and evolutionary aspects]. / Les surdosages aux antivitamines K à Dakar: aspects épidémiologiques, cliniques et évolutifs.

Vitamin K antagonists (VKA) are widely used for the prevention and curative treatment of thromboembolic events. This study aims to describe the epidemiological, clinical and evolutionary aspects of overdose in Vitamin K antagonists administration and determine its hemorrhagic factors. We conducted a monocentric cross-sectional descriptive study at the Principal Hospital in Dakar. All patients with an INR greater than 5 were included. We studied patients' gender and age, VKA used, drug use period, indications, INR value, associated drugs, presence of hemorrhage, immediate management and evolution. We enrolled 154 patients. Acenocoumarol was the most prescribed VKA. Sex ratio favoured women. The average age was 63 years. Overdose was asymptomatic in 43% of patients. Hemorrhagic symptoms were mainly represented by gingival bleeding, epistaxis. Major bleeding episodes were found in 8.6% of patients and they were represented by melena in 6 patients (3.9%), deep muscle hematoma in 2 patients (1.3%) and intracerebral parenchymal hematoma in 2 patients. Two patients had cardiovascular collapse associated with deglobulisation. Nonsteroidal anti-inflammatory drugs (NSAIDs) assumption was noted in 21% of patients. VKA assumption was suspended transiently in all patients. Mortality was 2%, due to intracranial hemorrhage. The reduction in VKA overdose requires caregivers to manage overdose factors and provide proper patient education.

[Clinical, electrocardiographic and echocardiographic aspects in elderly hypertensive patients in Senegal]. / Aspects cliniques, électrocardiographiques et échocardiographiques de l'hypertendu âgé au Sénégal.

INTRODUCTION: Arterial hypertension (HTA) in the elderly is an independent risk factor for cardiovascular disease. Our study aims to describe the clinical, electrocardiographic and echocardiographic aspects of Arterial hypertension in elderly patients. METHODS: We conducted a descriptive, cross-sectional study from January to September 2013. Hypertensive patients =60 years treated in Outpatient Cardiology Department at the Principal Hospital in Dakar were included in the study. Statistical data were analyzed using Epi Info 7 software and a p-value < 0.05 was taken as significant. RESULTS: A total of 208 patients were enrolled in the study. The average age was 69.9 years with a female predominance (sex ratio 0.85). Average blood pressure was 162/90 mm Hg. HTA was under control in 13% of cases. The ECG showed evidence of rhythm disturbance (17.78%), left atrial enlargement (45.19%), left ventricular hypertrophy (28.85%) and complete atrioventricular block in 2 cases. Holter ECG revealed non-sustained ventricular tachycardia (Lown class IVb) in 4 cases, paroxysmal atrial fibrillation in 6 cases and paroxysmal atrial flutter in 1 case. Echocardiography performed in 140 patients showed mainly concentric left ventricular hypertrophy in 25 patients, occuring more frequently in males (p=0,04) and dilated left atrium in 56,42% of cases, occuring more frequently in elderly patients (p= 0,01). CONCLUSION: Electrocardiographic and echocardiographic aspects in elderly hypertensive population are characterized by concentric left ventricular hypertrophy and by the frequency of arrhythmias sometimes revealed by long-term continuous external electrocardiographic recording.

Superior vena cava syndrome revealing a Behçet's disease.

INTRODUCTION: Behçet's disease (BD) is a rare vasculitis in sub-Saharan Africa. Vascular thrombosis, especially venous, is common in this condition and also constitutes a basic diagnostic criterion. Its affection of the superior vena cava is rather rare with only a few cases described in the literature. CASE REPORT: A 42-year-old male patient was seen at consultation presenting with a pulsatile, warm and slightly painful right latero-cervical swelling extending to the supraclavicular fossa with the presence of collateral venous circulation for three weeks prior to presentation associated with a mild headache. There were oral and genital ulcerations and erythematous skin lesions associated with a history of inflammatory recurrent arthralgia. Chest computed tomo-angiography showed cruoric internal jugular vein thrombosis extending to the superior vena cava with significant venous collateral circulation. The patient was treated with prednisolone (1 mg/kg/day) and colchicine (2 mg/day), as well as anticoagulation with heparin and vitamin K antagonist (Acenocoumarol) with regular INR monitoring. Clinical evolution was favorable during hospitalization, with residual discrete right supraclavicular swelling. There was no bleeding associated with anticoagulants use. CONCLUSION: The case stresses the importance of maintaining a high degree of suspicion for Behçet's disease in all cases of venous thrombosis.