[Risk factors of atrial fibrillation after aortocoronary bypass surgery with extracorporeal blood circulation].

Fibrillation of the atriums is registered in 20-40% of cases after the surgery of direct revascularization of the myocardium and runs alongside with impairments that are life-menacing. Seventy-six (76) patients were examined after direct revascularization of the myocardium, including 20 subjects with paroxysms of atrium fibrillation. The arrhythmia-related risk was shown to be increasing in persons (older than 60) with an impaired left column of the left coronary artery, in unstable angina pectoris diagnosed before surgery, malfunction of the left ventricle and in case of a rapid warming-up of a patient after the artificial blood circulation with cold cardioplegia is over.