Exercise capacity assessment in patients undergoing lung resection.

Area of Science:

• Cardiothoracic Surgery
• Pulmonary Medicine
• Diagnostic Assessment

Background:

• Preoperative functional assessment, including exercise capacity, is crucial for predicting postoperative cardiopulmonary complications.
• Lobar resection patients require accurate risk stratification before surgery.

Purpose of the Study:

• To evaluate the predictive value of preoperative functional assessment for postoperative cardiopulmonary complications.
• To determine if exercise capacity is an independent prognostic factor for outcomes after lobar resection.

Main Methods:

• Prospective study of 73 patients undergoing lung resection (excluding pneumonectomy and less than segmentectomy).
• Preoperative evaluation included pulmonary function tests, carbon monoxide lung diffusing capacity, and cardiopulmonary exercise tests.
• Postoperative morbidity and mortality were systematically recorded.

Main Results:

• Pulmonary and/or cardiac complications occurred in 41% of patients.
• Lower preoperative FEV1 and VO2max were significantly associated with pulmonary complications (p=0.013 and p=0.043).
• FEV1 was an independent predictor of pulmonary complications (p=0.002); VO2max at 18.7 ml/kg min identified high-risk patients.

Conclusions:

• Preoperative exercise capacity assessment aids in stratifying patients at risk for postoperative pulmonary complications.
• Functional assessment is valuable but not an independent prognostic factor for overall postoperative outcomes.