anesthesia
"Propofol was used in my 1st colonoscopy yesterday. Had a slight headache and the anaesthesiologist said he had something to fix it. I joked, "I bet you do," as he injected Propofol into the far end of the IV. A minute later I felt a warming sensation where the IV entered my arm and in an instant was completely out until I woke up an hour later in the recovery room. I had been dreading the colonoscopy because who wants to experience a 5-foot tube being shoved up their rear? But, I was out before the gastroenterologist even entered the room and remember nothing of the colonoscopy. With several prior surgeries, I hated the very long return to consciousness and control of my breathing. With this, I was fully alert within 5 minutes of waking."