COPD Assessment Test Score and Perioperative Risk in COPD

Arterial blood gas analysis will be performed at predefined time points: at rest during the preoperative period, before induction and preoxygenation during the perioperative period, two minutes after induction but prior to intubation, within the first 30 minutes in the PACU during the postoperative period, and at the 72nd postoperative hour in the ward