[Functional studies in the prediction of postoperative complications in the presence of lung diseases]

Data on the functional status of the cardiorespiratory system are required to identify patients at risk for postoperative complication in the presence of lung diseases. Very many factors influence the course of an operation and the postoperative period so there is no golden standard or the only parameter for predicting how the postoperative period runs. Patients with normal spirographic values (FEV1, more than 80%??) and without cardiovascular comorbidity are at a slight risk for postoperative complications. These patients do not need to be additionally examined. A less than one-month history of myocardial infarction, instable angina pectoris, decompensated heart failure, severe valvular disease are contraindications to planned surgery. The risk of cardiovascular events is high when the signs of myocardial ischemia occur with low exercise (less than 4 MET). Stress echocardiography, loading tests, and radioisotopic study are used as auxiliary techniques, FEV1, under 60%; ppo-FEV1, and ppo-DC, under 40%; VO2max, under 15 ml/kg/min are the values of a high risk for respiratory complications.