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Ann Thorac Surg 2003;75:966-972
© 2003 The Society of Thoracic Surgeons

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Original article: general thoracic

Risk factors for the development of postoperative complications after bronchial sleeve resection for malignancy: a univariate and multivariate analysis

^a Department of Thoracic Surgery, Otto Wagner Hospital, Vienna, Austria

Accepted for publication September 27, 2002.

^* Address reprint requests to Dr Hollaus, Department of Thoracic Surgery, Otto Wagner Hospital, Sanatoriumstraße 2, A-1140 Vienna, Austria
e-mail: peter.hollaus{at}pul.magwien.gv.at

BACKGROUND: This study was designed to identify risk factors responsible for postoperative complications after bronchoplastic procedures.

METHODS: Excluding sleeve pneumonectomies between January 1994 and December 2001, 108 patients underwent bronchoplastic procedures for bronchial malignancy. Prospectively documented data were age, gender, side, type of bronchial reconstruction, extended resection, histology, TNM stage, diseased lobe, and bronchial tumour occlusion. Cardiovascular (CV) risk factors included heart disease, arterial hypertension, cerebro-occlusive disease, peripheral artery disease of the lower extremities, diabetes mellitus, and abdominal aortic aneurysm. Patients were grouped according to the presence/absence of any CV risk factor and the absolute number of CV risk factors present (zero to four). Non-CV risk factors included neoadjuvant chemotherapy, alcoholism, lung disease, sleep apnea, history of recent pneumococcal sepsis, and repeat thoracotomy. Groups were assembled according to the presence or absence of any non-CV risk factor, neoadjuvant chemotherapy, and alcoholism. Respiratory risk factors included lung function and blood gas analysis. Groups were assembled according to the absolute number of respiratory risk factors in each person (zero to three) and the combination of respiratory and CV risk factors. Complications were defined as septic (pneumonia, empyema, brochopleural fistula, colitis) and aseptic. For univariate statistical analysis, t test, cross-tabulation, and ² test were used. All factors with a significance of p < 0.1 were entered into a binary backwards-stepwise logistic regression model.

RESULTS: The combination of respiratory and CV risk factors (p = 0.012, OR = 0.165) was predictive for overall complications. Coronary artery disease (p = 0.02, OR = 0.062) and the combination of two respiratory risk factors (p = 0.008, OR = 0.062) were predictive for septic complications. Peripheral artery disease (p = 0.024, OR = 0.28), moderate (p = 0.01, OR = 0.13) and severe chronic obstructive pulmonary disease (p = 0.018, OR = 0.11), and extended resections (p = 0.003, OR = 0.017.) were predictive for aseptic complications.

CONCLUSIONS: Comorbidity significantly influences the postoperative complication rate and is therefore crucial for evaluation of patients for bronchoplastic procedures. Different risk factors are responsible for the occurrence of septic and aseptic complications after bronchoplastic procedures.

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