How an anesthesia mask works during a surgery

As soon as I wake up, the operation is over.

"I was lying on the operating bed. They put an anesthesia mask on my face and asked me to take a deep breath, and then I fell asleep..." Li Jun, who had just completed the operation, told his family about his surgical experience. When I met the anesthesiologist who was visiting after the surgery, I asked curiously: "Is there any anesthetic medication in the anesthetic mask?"

Experts from the anesthesiology department will explain to us the relevant knowledge of anesthesia.

Put an Anesthesia Mask on your mouth and nose to inhale high-concentration oxygen to facilitate subsequent Endotracheal Tube intubation. In fact, this is because Li Jun's surgery requires general anesthesia. The patient's mouth and nose are covered with an anesthetic face mask, and the patient takes deep breaths of high-concentration oxygen. Store a certain amount of oxygen in the body to facilitate subsequent endotracheal tube intubation. The anesthetic drug takes effect through intravenous injection and the process of wearing the mask is almost simultaneous. Why do patients feel like they fall asleep as soon as they put on the mask? That's because while the anesthesia mask is on, the anesthesiologist will inject anesthetic medication into your vein through intravenous infusion. As the drug takes effect, the patient will soon fall asleep, losing consciousness and breathing.

Anesthesia masks are designed to allow you to breathe in high concentrations of oxygen, not anesthetic drugs. Inhaling high-concentration oxygen is to increase the oxygen reserve in the lungs. Because when you are intubated with tracheal tube, you cannot breathe on your own, and the outside world cannot give you oxygen, so you can only rely on the oxygen stored in the lungs. After you lose consciousness, the anesthesiologist will intubate your trachea and then connect you to a ventilator to assist you in breathing.

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