Exercise Capacity of Thoracotomy Patients in the Early Postoperative Period

摘要: Objective: We investigated the mechanism involved with initial drop and subsequent recovery of exercise capacity in early postoperative period thoracotomy patients. Methods: Sixteen patients (13 who had undergone lobectomy, 3 pneumo- nectomy) underwent a routine pulmonary function test (PFT) cardiopulmonary preoperatively, within 14 days (POD; post-1; mean 6 SD, 9 2 POD), after POD (post-2; mean, 26 12 POD). Results: After surgery on post-1, PFT results FVC, FEV1, maximum ventilatory volume (MVV) significantly decreased. Oxygen uptake (VO2) at venous blood lactate level 2.2 mmol/L (La-2.2), which was adopted as empirical anaerobic threshold, VO2 (VO2max) decreased to 88.2 7.9% 73.1 15.4% preoperative values, respectively. La-2.2 min ventilation (VE)/ MVV VE (VEmax)/MVV increased from 0.36 0.08 0.66 0.20 0.58 0.14 0.80 0.09, On post-2, though did not change, VO2max improved 81.5 19.7% association significant increases maximal tidal VEmax, were produced by results. VE/MVV also 0.49 0.13, indicated sufficient respiratory reserve submaximal exercise. Conclusions: The lung resection seems be derived both circulatory limitations. Further, 1 month an improvement limitation, caused surgical injury chest wall. (CHEST 2000; 118:384 -390)