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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Can Donating Blood Cause Black Out Suddenly?

I donated blood about 5:30 6:00 yesterday to red cross. Last night I got up about 12/12:30 to go to bathroom and blacked out. Hit my head, elbow, right ribs, fingers. I think I m OK. Have donated before with no problems. I didnt drink a lot of fluids. Wonder if black out could be related to donating blood?
Tue, 25 Feb 2014
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General & Family Physician 's  Response
Welcome to health care magic.
My dear friend i shall like to you tell you than sudden decrease blood volume can cause black out. No need to worry.
Its very common problem.
You should always take lot of fluids after donating blood and should not stand immediately after blood dontating.
Always care of your fluid intake before and after blood donation.
Thanx.
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Can Donating Blood Cause Black Out Suddenly?

Welcome to health care magic. My dear friend i shall like to you tell you than sudden decrease blood volume can cause black out. No need to worry. Its very common problem. You should always take lot of fluids after donating blood and should not stand immediately after blood dontating. Always care of your fluid intake before and after blood donation. Thanx.