BACKGROUND: Pulmonary function tests predict respiratory complications and mortality after lung resection through thoracotomy. We sought to determine the impact of pulmonary function tests upon complications after thoracoscopic lobectomy. METHODS: A model for morbidity, including published preoperative risk factors and surgical approach, was developed by multivariable logistic regression. All patients who underwent lobectomy for primary lung cancer between December 1999 and October 2007 with preoperative forced expiratory volume in 1 second (FEV1) or diffusion capacity to carbon monoxide (Dlco) 60% or less predicted were reviewed. Preoperative, histopathologic, perioperative, and outcome variables were assessed using standard descriptive statistics. Pulmonary complications were defined as atelectasis requiring bronchoscopy, pneumonia, reintubation, and tracheostomy. RESULTS: During the study period, 340 patients (median age 67) with Dlco or FEV1 60% or less (mean % predicted FEV1, 55+/-1; mean % predicted Dlco, 61+/-1) underwent lobectomy (173 thoracoscopy, 167 thoracotomy). Operative mortality was 5% (17 patients) and overall morbidity was 48% (164 patients). At least one pulmonary complication occurred in 57 patients (17%). Significant predictors of pulmonary complications by multivariable analysis for all patients included Dlco (odds ratio 1.03, p=0.003), FEV1 (odds ratio 1.04, p=0.003), and thoracotomy as surgical approach (odds ratio 3.46, p=0.0007). When patients were analyzed according to operative approach, Dlco and FEV1 remained significant predictors of pulmonary morbidity for patients undergoing thoracotomy but not thoracoscopy. CONCLUSIONS: In patients with impaired pulmonary function, preoperative pulmonary function tests are predictors of pulmonary complications when lobectomy for lung cancer is performed through thoracotomy but not through thoracoscopy. Copyright (c) 2010 The Society of Thoracic Surgeons. Published by Elsevier Inc. All rights reserved.
BACKGROUND: Pulmonary function tests predict respiratory complications and mortality after lung resection through thoracotomy. We sought to determine the impact of pulmonary function tests upon complications after thoracoscopic lobectomy. METHODS: A model for morbidity, including published preoperative risk factors and surgical approach, was developed by multivariable logistic regression. All patients who underwent lobectomy for primary lung cancer between December 1999 and October 2007 with preoperative forced expiratory volume in 1 second (FEV1) or diffusion capacity to carbon monoxide (Dlco) 60% or less predicted were reviewed. Preoperative, histopathologic, perioperative, and outcome variables were assessed using standard descriptive statistics. Pulmonary complications were defined as atelectasis requiring bronchoscopy, pneumonia, reintubation, and tracheostomy. RESULTS: During the study period, 340 patients (median age 67) with Dlco or FEV1 60% or less (mean % predicted FEV1, 55+/-1; mean % predicted Dlco, 61+/-1) underwent lobectomy (173 thoracoscopy, 167 thoracotomy). Operative mortality was 5% (17 patients) and overall morbidity was 48% (164 patients). At least one pulmonary complication occurred in 57 patients (17%). Significant predictors of pulmonary complications by multivariable analysis for all patients included Dlco (odds ratio 1.03, p=0.003), FEV1 (odds ratio 1.04, p=0.003), and thoracotomy as surgical approach (odds ratio 3.46, p=0.0007). When patients were analyzed according to operative approach, Dlco and FEV1 remained significant predictors of pulmonary morbidity for patients undergoing thoracotomy but not thoracoscopy. CONCLUSIONS: In patients with impaired pulmonary function, preoperative pulmonary function tests are predictors of pulmonary complications when lobectomy for lung cancer is performed through thoracotomy but not through thoracoscopy. Copyright (c) 2010 The Society of Thoracic Surgeons. Published by Elsevier Inc. All rights reserved.
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