[Evaluation of functional reserves of the oxygen transport system in cardiac surgery patients].

The informative value of determination of the restoration rate of spiroergometric parameters was examined in cardiosurgical patients who had undergone exercise testing. All the patients were divided into 3 homogeneous groups: (1) those without disorders; (2) those with moderate restoration; and (3) pronounced restoration. There was a moderate relationship between the restoration rate and the function of the oxygen transport system (OTS) and a high relationship between the rate and exercise tolerance in decompensated metabolic acidosis and left ventricular function. Analysis of the restoration of spiroergometric parameters provided a final assessment of the functional reserves of OTS in cardiosurgical patients and serves as a non-invasive technique to study left ventricular function in the patients.