Closed nose reduction) if the doctor has told me that he will use general anesthesia, what else will he use ? ( iv, endotracheal tube)

Nasal reduction: A closed nasal reduction with general anesthesia usually means IV sedation with an endotracheal tube to help you breathe while you are asleep you will not feel anything. It is a very short procedure and so short that it may even be done without putting the tube in your throat. Be safe and good luck.

ENT: Yes you should have intravenous access. No, you don't require intubation.

See below: Probably will not use general anesthesia (this involves and endotracheal tube and a ventilator) he will probably use supplemental oxygen and IV sedatives to place you in twilight sleep for the procedure. Hope this answers your question.