Could smoking marijuana after a surgery where general anesthesia was used cause any huge issues? it's been 12 hrs since the surgery.

Depends: Smoking anything can impair the small blood vessel flow to the wound site and delay healing. It doesn't matter if you had a general or local.General anesthesia does use the lung tissue to pass the drugs of anesthesia through the cell membrane to enter the body.The gas can be irritating to these tissues.Weed uses this same method to enter your system.