[qazibasit (OP)]

a few weeks before i was in my hematology lab and we were told to take out 3 cc blood from the median cuboital vein my friend took my blood after that suddenly i faint i dont know what happened to me i am a healthy person but everyone was surprised that it was just 3 cc of blood and after that the next week the other group was told to perform the same practical and two other students got faint.

 Can anyone tell me why it happens i think it is due to the parasympathetic stimulation but this is just my guess. Can anyone tell me what is the actual thing.

[Corbeille]

Could it be an instinctive response of the body shutting down (well almost) to limit the damage if you were genuinly injured and losing blood?   I always look away at a poster on the doctor's wall when I have to give a blood sample.

you can't crack me I'm a rubber duck!

[tweener]

I get faint when I see a needle.  I don't wait for the blood.  Besides, blood doesn't really bother me, just needles.

----
John - The Eternal Pessimist.

[bezoar]

I'm not sure why, but I've had lots more men get faint at the sight of blood or needles than women.

[DrN]

I never used to be bothered, but i had a bad experience where the pain actually caused me to faint, and I've been nervous ever since.

I've had a blood test since then and was fine, but looked the other way. I think its probably psychological. can't think of any medical reason why you'd faint after losing such a small amount of blood, I mean women lose about as much every month!

[Exodus]

I quite enjoy having injections and blood tests... the pain is quite cool and strangely refreshing![]

[nilmot]

You might think I've lost it but I second that thought.

Tom

[DrN]

just you wait til you get the student nurse who failed her phlebotomy course!

[Exodus]

quote:Originally posted by fishytails

just you wait til you get the student nurse who failed her phlebotomy course!

BRING HER ON!!! []