Early complications in surgical treatment of lung cancer: a prospective, multicenter study. Grupo Cooperativo de Carcinoma Broncogénico de la Sociedad Española de Neumología y Cirugía Torácica.

BACKGROUND We prospectively analyzed the postoperative morbidity, mortality rate, and risk factors in 605 patients who underwent thoracotomy for bronchogenic carcinoma. METHODS Patients were categorized by postsurgical tumor stage: I, 287 patients (47.4%); II, 49 patients (8.1%); IIIA, 154 patients (25.5%); IIIB, 80 patients (13.2%); IV, 16 patients (2.7%); unavailable, 19 patients (3.1%). Two hundred ninety-four patients (48.6%) underwent lobectomy, 172 (28.4%) pneumonectomy, 20 (3.3%) bilobectomy, 29 (4.8%) segmentectomy, 27 (4.5%) wedge resection, and 63 (10.4%) exploratory thoracotomy. The importance of the factors that influence the morbidity and mortality rates was calculated from their relative risks. Univariate and multivariate methods for a logistic regression model were used for this analysis. RESULTS Postoperative complications developed in 196 patients (32.4%); there were 165 (27.3%) cases of operation-related complications and 152 (25.1%) cases of respiratory and cardiovascular complications. The morbidity rate was highest in patients with preexisting vascular disease (50.9%; odds ratio [OR], 2.20) or insulin-dependent diabetes mellitus (52.4%; OR, 2.77) and in patients who underwent pneumonectomy (40.1%; OR, 1.82). Forty patients (6.6%) died postoperatively, most commonly of respiratory failure (67.5%). The mortality rate was highest in patients with postoperative morbidity (OR, 31.9) or vascular disease (15.8%; OR, 2.83) and in patients who underwent pneumonectomy (13.4%; OR, 4.9). CONCLUSIONS Postoperative complications are more likely to develop in patients with peripheral vascular disease or insulin-dependent diabetes mellitus, or both. Postoperative mortality was found to be significantly higher in patients with vascular disease and those who underwent pneumonectomy.

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