[Mitral valve prolapse or late systolic click syndrome in childhood].

6 Children with late systolic murmur and systolic click in mitral valve prolapse syndrome are reported. The clinical, electrocardiographic, phonocardiographic and echocardiographic findings are represented. In differentiating the mitral valve prolapse from the idipathic hypertrophic subaortic stenosis, the mitral insufficiency and the pure accidental murmur, this non-invasive technique is a good enrichment of the diagnostic procedures.