It was caused by a cold ...

Two hours later, the patient woke up from general anesthesia. The total amount of urine was about 1950 ml, the color was clear, and the spontaneous breathing was stable. He could open his eyes when he called out, clean the respiratory tract, and remove the laryngeal mask.

He stayed for 10 minutes and didn't see any obvious abnormalities.

The patient's blood pressure was 130 - 108 mmHg/76 - 55 mmHg, heart rate was 74 - 89 beats per minute, and blood oxygen saturation was 97 - 100%.

After the auscultation, the breathing sounds of both lungs were clear and symmetrical, and they could respond to each call. The muscle strength recovery was satisfactory, and they could move their limbs and raise their heads according to instructions. They were then sent back to the ward to strengthen the monitoring.