I spoke with a nurse for 35 minutes this morning; going over the details for my hernia surgery that will happen soon and getting a lab appointment for blood work. We discussed several details including drugs that I take. When I mentioned cannabis she said I should not use any for 48 hours prior to surgery. I said I use it for pain and have a medical cannabis licence. She said if I do use cannabis I should inform the surgeon because the anesthesiologist would need to know. I was surprised to find out how much anesthetics are effected by THC. Does anyone have any experience with surgery and THC?