Vasovagal attack.

hye, i am a medical student. i smoke ciggarates, not drink and dont take drug. my age is 22 yo. dont have any health problems. 1 operation on acl procedure, git prob during kids, now dont have.

i usually sleep at 6 in the morning and woke up at 5pm in the evening. but today i need to attend my class, so since 5pm yesterday i did not sleep and attend a class which start at 9am. b4 going to class i ate rice with egg and carrot at 6am. 9am, im having a lecture and then at 1030am im having my clinical training which is at operation room and it was a first time i entered the operation room to see a surgery of kidney transplant.

at first everything is normal, i watch carefully the surgery without feel sick or scare with blood and also the operation, after about 45 minutes while i keep my eye on anestheslogist injecting something to the iv fluid i started to feel lightheadedness and drowsiness with NO nausea and uncomfortable in heart. i decided to step out from the operation room and when im consious after 1-2 min i already lying on the bed. my bp was measured and it is normal

my question is
1) is it because of my 1st time entering the operation room or lack of sleep and hungry?
2) is there any problem with my heart or nerves?

[bbxx]

You know it could be any of those things but I am betting on the first surgery. I have a doctor friend that said he he could watch a surgery and not faint, but when he had to give someone a shot, he fainted. He thought he would not be able to be a doctor because it happened several times, but he kept at it and he is now old enough to retire.

[LindaTX]

Well, as a medical student, you should know if you smoke, you certainly do have a medical problem.  What's up with that?  The problem with no sleep and not eating much could have contributed.  I doubt it was because it was you first time being in the operating room.  You have plenty of other issues to blame.  Take better care of your health, ok?