Not-OP Nüchtern sein?

The sobriety is due to the fact that there is an increased risk of vomiting in the Narcose administration. The background is a biological protection mechanism. This is the fact that the “brake center” in the brain realizes that “galact” (=narkose agent) are in the blood and therefore triggers a vomiting to get rid of the stomach content.

The danger of vomiting is the inhalation of vomiting, which can lead to the risk of choking, but at least of pneumonia.

Protection against this risk is the intubation of the patient. In sobriety, the anesthesia personnel have sufficient time to introduce the tube into the air tube. It can wait until the patient sleeps reliably, then the muscle relaxant is splashed and maintained until it has an adequate effect and during this time sufficient oxygen is blown into the lung to be able to overcome any problems in the intubation.

If the patient is not sober, a so-called flash initiation must take place, in which the breathing tube must sit faster than normally.
This means that the effect of the drugs cannot be reliably awaited.
In this case, the patient can still be awake when the tube is introduced to him, should and must not be, but may occur. A rapid intubation can also not always take the necessary consideration of the teeth, tooth damage can occur.
Intermediate vomiting can nevertheless not be excluded:

In short, The Narkoseei line is much more risky.