If we return to the past

Time was no longer counted in days or hours, but in seconds.

As the seconds passed, the blood pressure in the patient's wounded artery steadily dropped. The heart rate stopped changing drastically after it reached 150 beats per minute.

However, this kind of heartbeat was already very scary. He didn't know when it would fall like a cliff, which could declare the patient's death.

The blood oxygen saturation level had dropped to about 66%. Due to the lack of oxygen, the anesthetist had begun to change to a 100% pure oxygen ventilator.

Under the effect of pure oxygen, the blood oxygen saturation level rose for a short time and then fell steadily.

"Department Director Liu, there's a gas embolism, right?" The anesthetist was a little flustered. All the possibilities he could think of had been eliminated, leaving only this diagnosis with a high mortality rate.

"It would be terrible if there was a gas embolism," the anesthetist said with a trembling voice.