title: [Risk factors in aortic valve prosthesis].
abstract: 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. The leading factors in the assessment of cardiovascular lesions include the systolic and diastolic pressure, the degree of heart size enlargement, the end diastolic pressure in the left ventricle. Among the independent factors, of greatest prognostic value are the degree of calcification of the aortic valve cusps, the duration of the disease, and the period after the onset of subjective symptoms. The duration of the operative procedure and of the perfusion serves as an additional valuable guideline in making the prognosis of aortic valve replacement.
mesh_terms: D000293:Adolescent; D000328:Adult; D001021:Aortic Valve / Q000601:surgery*; D001022:Aortic Valve Insufficiency / Q000503:physiopathology / Q000601:surgery; D001024:Aortic Valve Stenosis / Q000503:physiopathology / Q000601:surgery; D001794:Blood Pressure; D002648:Child; D003326:Coronary Circulation; D005069:Evaluation Studies as Topic; D006350:Heart Valve Prosthesis; D006801:Humans; D008875:Middle Aged; D011379:Prognosis; D012306:Risk
vernacular_title: Faktory riska protezirovaniia aortal'nogo klapana