Association between Pulmonary Function and Stair-Climbing Test Results after Lung Resection: A Pilot Study

Area of Science:

• Pulmonary Medicine
• Cardiopulmonary Exercise Testing
• Thoracic Surgery

Background:

• The stair-climbing test (SCT) is used preoperatively to assess exercise capacity in lung cancer patients.
• Its utility as a postoperative assessment tool for evaluating functional decline remains understudied.
• This study investigates if SCT performance reflects post-lung resection pulmonary function changes.

Purpose of the Study:

• To determine if stair-climbing test results correlate with reduced pulmonary function after lung resection surgery.
• To evaluate the effectiveness of SCT in capturing exercise capacity decrements in the postoperative period.

Main Methods:

• Twenty non-small-cell lung cancer patients undergoing lung resection were studied.
• Perioperative assessments included pulmonary function tests, SCT, and 6-minute walk distance (6MWD).
• Correlation analysis examined the relationship between postoperative pulmonary function changes and exercise capacity.

Main Results:

• No significant correlation was found between changes in pulmonary function and 6MWD.
• Significant correlations were observed between changes in forced expiratory volume in 1 second and SCT altitude (r=0.46, p<0.05).
• Significant correlations were also found between changes in carbon monoxide lung diffusion capacity and SCT altitude (r=0.54, p<0.05).

Conclusions:

• Stair-climbing test findings appear to effectively detect exercise capacity changes related to postoperative pulmonary function decline.
• SCT may serve as a valuable tool for monitoring functional recovery after lung resection.