Intraoperative Ultrasonic Atomization of Lidocaine and Postoperative Pulmonary Complications

After induction of general anesthesia and before the end of the surgery, 100mg of 2% lidocaine was nebulized and inhaled respectively, and the nebulization time was 15-20 minutes each time.

After anesthesia induction and before the end of the surgery, the same volume of normal saline (5ml of 0.9% NaCl) was ultrasonically atomized, and the atomization time was 15-20 minutes each time.