Particularites Diagnostiques Et Pronostiques De La Dissection Aortique Au Cnhu-Hkm De Cotonou, Benin : A Propos De 6 Cas En 2017

Aortic dissection (DA) defined by longitudinal cleavage of the aortic wall, at the level of the media from an intimal breach, is a diagnostic and therapeutic emergency. Out of a total of 467 hospitalized patients, we reported 6 cases of aortic dissection (DA) observed at CNHU-HKM, Cotonou, in 2017. The patients were 53.33 years old (33-65 years old), and they comprised of 4 women and 2 men. Hypertension was present in 5 patients. Chest pain, the most common telltale sign, was found in 5 patients but typical only in 2 cases. Three (3) patients had severe hypertension when they were admitted, and 2 had a differential arterial pressure of at least 20 mmHg between the arms. The breath of aortic insufficiency was present in 4 patients. Chest X-ray has contributed to the diagnosis in the 4 cases where it was prescribed. Cardiac Döppler ultrasonography was perfomed in 5 patients, while the ECG gave no contribution to the diagnosis. The diagnostic confirmation was made by the aortic CT scan in all patients and the AD was type A in 5 cases and type B in 1 case according to the Stanford classification. All patients received medical treatment and only 1 patient received both medical treatment and surgery. The outcome was fatal in 5 patients: death of the patient with type B dissection and 4 deaths out of 5 for type A

Ventricule droit à double chambre (VDDC) isolé: à propos d'un cas au CNHU, Cotonou, Bénin

Le ventricule droit à double chambre (VDDC) est une malformation cardiaque rare dans laquelle le ventricule droit est divisé en deux chambres par une bande musculaire anormale. Il est associé dans 80 à 90% à d'autres malformations. L'expression clinique est variée et dépend de l'importance de l'obstruction intraventriculaire. Nous rapportons l'observation d'une adolescente de 16 ans, présentant une forme isolée de VDDC révélée par des syncopes à répétition. Le diagnostic est fait par l'échocardiographie Döppler. La résection chirurgicale de la bande musculaire anormale a été faite avec succès.Mots clés: VDDC, adolescente, syncope, échocardiographie, chirurgieEnglish Title: Isolated double-chambered right ventricle (DCRV): a case study conducted at the National University Hospital CNHU-HKM in Cotonou, BeninEnglish AbstractDouble-chambered right ventricle (DCRV) is a very rare cardiac defect in which the right ventricle is divided by anomalous muscle bundle into two chambers. It is associated with other malformations in 80-90% of cases. Clinical presentation varies and depends on the extent of the intraventricular obstruction. We here report the case of a 16-year old teenager with isolated DCRV revealed by recurrent syncopes. The diagnosis was made using Doppler echocardiography. The patient underwent successful surgical resection of the abnormal muscle band.Keywords: DCRV, teenager, syncope, echocardiography, surger