title: [Diagnosis of the failure and thrombosis of a mitral valve prosthesis based on indirect study methods].
abstract: The possibilities of phono- and polycardiography in the diagnosis of failure and thrombosis of a mitral valve prosthesis are demonstrated. It is established that the most characteristic phonocardiographic signs of paravalvular failure in patients with this pathological condition are a systolic murmur, a reduced second sound-sound of mitral valve prosthesis opening interval and ejection period (according to the findings of polycardiography) and prolongation of the Q-first sound interval. In typical cases, thrombosis of a mitral valve prosthesis is attended by a diastolic murmur, a reduced second sound-sound interval of prosthesis opening, and prolongation of the Q-first sound interval.
mesh_terms: D004562:Electrocardiography; D006349:Heart Valve Diseases / Q000175:diagnosis; D006350:Heart Valve Prosthesis / Q000009:adverse effects*; D006801:Humans; D008943:Mitral Valve / Q000503:physiopathology*; D010701:Phonocardiography; D011183:Postoperative Complications / Q000175:diagnosis*; D013927:Thrombosis / Q000175:diagnosis*
vernacular_title: Diagnostika nedostatochnosti i tromboza proteza mitral'nogo klapana po dannym nepriiamykh metodov issledovaniia.