title: [Exertion syncope disclosing supravalvular mitral stenosis in an infant].
abstract: An infant with frequent upper airways infections presented syncopes during meals and weeping since the age of eleven months. Cardiac examination was always normal. At 14 months of age, an echocardiogram with colour Doppler demonstrated a severely stenotic isolated supramitral membrane with severe pulmonary hypertension. The membrane was immediately excised curing the malformation and suppressing definitively the syncopes, probably due to decreased cerebral blood flow during exertion. An echocardiogram should always be performed when syncopes remain unexplained in small children. It allows early diagnosis and treatment of congenital heart defects which do not have auscultatory findings especially those resulting in severe pulmonary venous obstruction.
authors.affiliation: Service de pédiatrie Sion, hôpital régional de Sion, Suisse.
authors.forename: G
authors.initials: G
authors.lastname: Buyse
authors.forename: H
authors.initials: H
authors.lastname: Kuchler
authors.forename: J
authors.initials: J
authors.lastname: Crittin
authors.forename: N
authors.initials: N
authors.lastname: Sekarski
authors.forename: M
authors.initials: M
authors.lastname: Hurni
authors.forename: J
authors.initials: J
authors.lastname: Cotting
authors.forename: M
authors.initials: M
authors.lastname: Payot
mesh_terms: D004452:Echocardiography; D006801:Humans; D006976:Hypertension, Pulmonary / Q000209:etiology; D017380:Hypertrophy, Right Ventricular / Q000209:etiology; D007223:Infant; D008297:Male; D008946:Mitral Valve Stenosis / Q000150:complications* / Q000151:congenital / Q000175:diagnosis / Q000601:surgery; D005082:Physical Exertion; D013575:Syncope / Q000209:etiology*
vernacular_title: Syncope à l'effort révélatrice d'un obstacle supramitral chez un nourrisson.