anaesthetics, OOBE through gas Options

Alright, I have a surgery for my lazy eye on this coming friday at around 11:30 a.m. The doctors are going to correct my lazy eye, but they are going to put me to sleep with anaesthetics. Now my question will be in a bit. I was on amazon and I looked at The Projection of the Astral Body by S. Muldoon, and I was searching inside the book, and it said that the only times that people projected were, when they fall asleep, etc. etc. But the book also said that people astral project (OOBE) when they are put to sleep by anaesthetics. Now here is my question: Is it true that anaesthetics induce OOBEs? If you guys know, then please tell me, because I am interested in learning more. But if you do not know, then well, I will tell you on Friday I guess!
Thanks,
Chaos_mage4

First of all, what is this that you can only project while sleeping? I MUST say that is a crock of s***. Anyone can project while awake if your practiced enough. Or a natural.

Projection while under anesthetics is possible, yes. But is it often? Not to my knowledge or understanding. I really wouldn't worry about so much, honestly. I've been under anesthetics before, and have had no problems. But even if you do, it still shouldn't be a problem, because we do have natural tendancies to lift off in our sleep without being consciously aware.