[Risk factors in aortic valve prosthesis].

The paper is devoted to the determination of the prognostic value of preoperative and intraoperative symptoms observed in aortic valve prosthetic replacement, as well as to the development of a quantitative criterion of the severity of the patient's state for the evaluation of the risk factor of surgery. The peculiarities of the clinical pattern were analysed in 117 patients operated on for aortic valve pathology. The computerization of the assessment of individual symptoms and their combinations (36 symptoms, 114 signs pertaining to the patient's history, objective, instrumental and radio-surgical examinations) was carried out on the "Minsk-22" computer.