[Sudden cardiac arrest in ventricular fibrillation mechanism as a first manifestation of primary mitral valve prolapse].

We present the case of a 58 year-old patient with a primary mitral valve prolapse (MVP) at whose first manifestation of the disease was a sudden cardiac death (SCD) in ventricular fibrillation mechanism. In ECG paroxysmal atrial fibrillation was detected. The arrhythmia became persistent atrial fibrillation but in ECG sinus rhythm recording, QT dispersion occurred. In the echocardiography we found a classic MVP syndrome with large mitral regurgitation, preserved left ventricular systolic function and recent infective endocarditis features on posterior cusp of mitral valve. In the computed tomography of the head we found acute and recent history of stroke. The patient was qualified for implantable cardioverter-defibrillators (ICD) implantation as a secondary SCD preventive treatment. An artificial mitral valve was implanted. In the long-term observation (36 month) two adequate ICD interventions caused by ventricular tachycardia were recorded. General condition of the patient remains stable.