hello I am a 38ry old female who went in to have a simple gallbladder removal, when upon awake every one was buzzing around me, my heart rate was up to 150 and my oxygen level was 81 so they had me hooked up to oxygen,, needless to say that after 4 hrs of the heart rate not going down they finally had to call the heart docter to give me a shot to bring it down which it did, in the mean time i had several EKG'S and they checked my cardica emzemys for a possible heart attack, all test came back great.!! they however did decide to keep me over nite in observation I am now home an just sore from the surgery.. My questions is what happened????? I am healthy, I do smoke I dont drink I have been put to sleep before with no reaction like this but now i am scared of what will happen because no one can give me a true answer on what it was.. please if you can help it would be great!!