title: [Prevalence of congenital heart diseases in Koranic schools (daara) in Dakar: a cross-sectional study based on clinical and echocardiographic screening in 2019 school children].
abstract: Congenital heart diseases are one of the major cardiovascular diseases in developing countries. Most prevalence studies were based on clinical examination of children with echocardiographic confirmation of suspected cases and underestimate its prevalence. The objective of this study was to investigate the prevalence of congenital heart disease in "daara" (Koranic schools) in the city of Dakar and its suburbs on the basis of clinical examination and Doppler echocardiography in school children. This cross-sectional survey was carried out from 9(th) August to 24(th) December 2011, and included a population of 2019 school children aged 5 to 18 years in 16 selected "daaras" under the Academic Inspectorate of Dakar and its suburbs. Anamnestic, clinical and echocardiographic data were recorded in a validated questionnaire. A p < 0.05 was considered to be statistically significant in bivariate analysis. 2 019 school children were included out of which 60.1% were male (sex-ratio: 0.66). The average age was 9.7 years (± 3.3 years). 18 cases of congenital heart diseases were detected being a prevalence of 8.9 per 1 000 (95 % CI: 1.8 to 7.9). This included 6 cases of inter-atrial septal aneurysm, 5 cases of peri-membranous ventricular septal defects, 4 cases of patent ductusarteriosus and 3 cases of tetralogy of Fallot. Factors correlated with the presence of congenital heart disease were ageless than 8 (p <0.001) and residence in the suburbs of Dakar (p <0.001). We also detected 10 cases of rheumatic valvular disease, a prevalence of 4.9 per 1 000 (95% CI: 2.4 to 9.1). Our study shows a high prevalence of congenital heart diseases, which is almost identical to the WHO estimates and that ultrasound screening is more sensitive than clinical screening. Reducing the prevalence of these diseases requires implementation of appropriate policies, focusing on awareness and early detection.
authors.affiliation: Clinique cardiologique, CHU Aristide Le Dantec, Dakar, Sénégal.
authors.forename: M
authors.initials: M
authors.lastname: Bodian
authors.affiliation: Clinique cardiologique, CHU Aristide Le Dantec, Dakar, Sénégal. ngaideaa@hotmail.fr.
authors.forename: A A
authors.initials: AA
authors.lastname: Ngaïdé
authors.affiliation: Clinique cardiologique, Hôpital Général de Grand Yoff, Dakar, Sénégal.
authors.forename: A
authors.initials: A
authors.lastname: Mbaye
authors.affiliation: Clinique cardiologique, CHU Aristide Le Dantec, Dakar, Sénégal.
authors.forename: S A
authors.initials: SA
authors.lastname: Sarr
authors.affiliation: Clinique cardiologique, CHU Aristide Le Dantec, Dakar, Sénégal.
authors.forename: M
authors.initials: M
authors.lastname: Jobe
authors.affiliation: Clinique cardiologique, CHU Aristide Le Dantec, Dakar, Sénégal.
authors.forename: M B
authors.initials: MB
authors.lastname: Ndiaye
authors.affiliation: Clinique cardiologique, CHU Aristide Le Dantec, Dakar, Sénégal.
authors.forename: A D
authors.initials: AD
authors.lastname: Kane
authors.affiliation: Clinique cardiologique, CHU Aristide Le Dantec, Dakar, Sénégal.
authors.forename: F
authors.initials: F
authors.lastname: Aw
authors.affiliation: Clinique cardiologique, CHU Aristide Le Dantec, Dakar, Sénégal.
authors.forename: N D
authors.initials: ND
authors.lastname: Gaye
authors.affiliation: Clinique cardiologique, CHU Aristide Le Dantec, Dakar, Sénégal.
authors.forename: F G
authors.initials: FG
authors.lastname: Ba
authors.affiliation: Clinique cardiologique, CHU Aristide Le Dantec, Dakar, Sénégal.
authors.forename: M B
authors.initials: MB
authors.lastname: Bah
authors.affiliation: Clinique cardiologique, CHU Aristide Le Dantec, Dakar, Sénégal.
authors.forename: A
authors.initials: A
authors.lastname: Tabane
authors.affiliation: Clinique cardiologique, CHU Aristide Le Dantec, Dakar, Sénégal.
authors.forename: M
authors.initials: M
authors.lastname: Dioum
authors.affiliation: Clinique cardiologique, Hôpital Général de Grand Yoff, Dakar, Sénégal.
authors.forename: D
authors.initials: D
authors.lastname: Diagne
authors.affiliation: Clinique cardiologique, CHU Aristide Le Dantec, Dakar, Sénégal.
authors.forename: M
authors.initials: M
authors.lastname: Diao
authors.affiliation: Clinique cardiologique, Hôpital Général de Grand Yoff, Dakar, Sénégal.
authors.forename: B
authors.initials: B
authors.lastname: Diack
authors.affiliation: Clinique cardiologique, CHU Aristide Le Dantec, Dakar, Sénégal.
authors.forename: M
authors.initials: M
authors.lastname: Sarr
authors.affiliation: Clinique cardiologique, Hôpital Général de Grand Yoff, Dakar, Sénégal.
authors.forename: A
authors.initials: A
authors.lastname: Kane
authors.affiliation: Clinique cardiologique, CHU Aristide Le Dantec, Dakar, Sénégal.
authors.forename: S A
authors.initials: SA
authors.lastname: Bâ
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D003430:Cross-Sectional Studies; D015150:Echocardiography, Doppler; D005260:Female; D006330:Heart Defects, Congenital / Q000000981:diagnostic imaging / Q000453:epidemiology*; D006801:Humans; D007514:Islam; D008297:Male; D008403:Mass Screening; D015995:Prevalence; D012574:Schools / Q000706:statistics & numerical data*; D012675:Senegal / Q000453:epidemiology
keywords: Child; Congenital heart diseases; Dakar; Echocardiographic; Koranic schools; RHD; Senegal; Sub-Saharan Africa