[Mechanical hemolysis in patients with mitral and aortic valve prostheses].

The examination of 25 patients operated upon has shown that alterations of functions of the artificial prostheses of the heart valves can be timely detected by a complex of laboratory studies (determination of activity of lactate dehydrogenase, osmotic resistance of erythrocytes, reticulocyte content, hemoglobin and morphological features of erythrocytes).