The Effect of Single Lung Ventilation Duration on Postoperative Pulmonary Complications in Thoracic Surgery

In this observational study, the naturally occurring duration of intraoperative single-lung ventilation (SLV) during thoracic surgery will be recorded. No intervention is applied or modified for research purposes. The exposure of interest is the total duration (in minutes) of SLV, which will be timed from initiation to termination during surgery. This variable will be analyzed in relation to postoperative pulmonary complications.