title: Abnormal mitral valve motion during ventricular extrasystoles: an echocardiographic study.
mesh_terms: D005117:Cardiac Complexes, Premature / Q000503:physiopathology*; D006332:Cardiomegaly / Q000503:physiopathology; D004452:Echocardiography; D006801:Humans; D008943:Mitral Valve / Q000503:physiopathology*; D008944:Mitral Valve Insufficiency / Q000209:etiology / Q000503:physiopathology*; D010210:Papillary Muscles / Q000503:physiopathology