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Scuba Forum / General / September 2004Blood donation & DCS
I would like to know if a diver is more inclined to get DCS if he donates blood 12 hours prior to dives that involve some minor (10-15 min) mandatory deco stops and dove with conservative tables. Dive and deco done on 30%. Plenty of fluids taken. Not even getting into deco, I don't think I'd want to dive at all 12 hours after giving blood. I'd way several days for your body to build the red cells back up. > Not even getting into deco, I don't think I'd want to dive at all 12 hours > after giving blood. I'd way several days for your body to build the red > cells back up. And fluid. Several days is a lot, my guess is about two. "mike gray" <scrubadub@att.net> wrote in message news:hmD0d.578525$Gx4.266909@bgtnsc04- > Several days is a lot, my guess is about two. I'm conservative. :) Dive saturday and sunday, give blood on a Tueday and head back to sea on Saturday. BTW an FAQ I found said plasma is replaced in 24 hours and red blood cells take 4-8 weeks. I guess how long to wait past 24 hours is going to be determined by someones initial cardio fitness level. > "mike gray" <scrubadub@att.net> wrote in message > news:hmD0d.578525$Gx4.266909@bgtnsc04- [quoted text clipped - 7 lines] > take 4-8 weeks. I guess how long to wait past 24 hours is going to be > determined by someones initial cardio fitness level. Well, yeah. "plasma" is just the liquid, cell free part of the blood. It's almost entirely water with ions and dissolved matter. Your body notices the lost blood volume and replaces it very quickly... the actual blood cells you gave up take a while for your body to actually manufacture. I can't see how any of it would affect your risk of DCS, though. It's not like red and white blood cells bring nitrogen into your tissues.. that stuff is dissolved in the water of your body. > > "mike gray" <scrubadub@att.net> wrote in message > > news:hmD0d.578525$Gx4.266909@bgtnsc04- [quoted text clipped - 16 lines] > not like red and white blood cells bring nitrogen into your tissues.. > that stuff is dissolved in the water of your body. The lack of plasma is equivilent to being dehydrated, which definately increases your chances of DCS (plasma is the transport vehicle for nitrogen). Chris' cite of 24 hours to replace lost plasma is probably a good guideline. One could also call DAN and ask, of course :-) Alan > BTW an FAQ I found said plasma is replaced in 24 hours and red blood cells > take 4-8 weeks. I guess how long to wait past 24 hours is going to be > determined by someones initial cardio fitness level. The figures I have from the nurses in the british blood service are 4 hours for plasma and 7 days for whole blood (that includes platelets). As the UK donation frequency for male blood is 12 weeks I am inclined to believe your numbers to be way too conservative unless they are donation frequencies >replace spamblock with my family name to e-mail me >> BTW an FAQ I found said plasma is replaced in 24 hours and red blood cells >> take 4-8 weeks. I guess how long to wait past 24 hours is going to be [quoted text clipped - 6 lines] >believe your numbers to be way too conservative unless they are donation >frequencies The US recommended frequency is 8 weeks for whole blood.  Signaturedillon When I was a kid, I thought the angel's name was Hark and the horse's name was Bob. >Not even getting into deco, I don't think I'd want to dive at all 12 hours >after giving blood. I'd way several days for your body to build the red >cells back up. I'm always told to not lift heavy objects for 24 hours and to avoid strenuous exercise for at least 12. There has been no correlation between blood donation and DCI. Signaturedillon When I was a kid, I thought the angel's name was Hark and the horse's name was Bob. "Dillon Pyron" <dmpyronINVALID@austin.rr.com> wrote in message > I'm always told to not lift heavy objects for 24 hours and to avoid > strenuous exercise for at least 12. From http://www.hoaghospital.org/SupportServices/BloodDonorServices/FAQs.html How long will it take to replenish my blood? Blood volume or plasma is replaced within 24 hours. Red cells need about 4 to 8 weeks for complete replacement. How will I feel after the donation? Most people feel great! Donors who know what to expect and have eaten regular meals before donating are usually fine. After donating, drink extra fluids for the next 24 hours and avoid strenuous exercise. How soon after donating can I resume exercising? Heavy muscular or strenuous activity such as lifting or pushing heavy objects should be avoided for 4 to 5 hours after giving blood, as this may cause bleeding from the needle site. Strenuous exercise should be postponed until the day after your donation. >From: Dillon Pyron dmpyronINVALID@austin.rr.com >Date: 9/11/2004 11:58 AM Eastern Daylight Time [quoted text clipped - 6 lines] >I'm always told to not lift heavy objects for 24 hours and to avoid >strenuous exercise for at least 12. How do you piss? Popeye Self improvement is masterbation. Self destruction is the answer. Tyler Durden > I would like to know if a diver is more inclined to get DCS if he donates > blood 12 hours prior to dives that involve some minor (10-15 min) mandatory > deco stops and dove with conservative tables. Dive and deco done on 30%. > Plenty of fluids taken. No Brian Edmonton, Alberta > I would like to know if a diver is more inclined to get DCS if he donates > blood 12 hours prior to dives that involve some minor (10-15 min) mandatory > deco stops and dove with conservative tables. Dive and deco done on 30%. Finnish Red Cross recommends waiting 24 hrs after donating blood. According to the info they're giving the recommendation is due to the fact that dizzyness might get you in trouble while diving (same recommendation and reason applies to some other activity as well, like skydiving). I don't know if they've considered DCS in this recard SignatureThe suespammers.org mail server is located in California; do not send unsolicited bulk e-mail or unsolicited commercial e-mail to my suespammers.org address. It's my life: http://www.laitinen.org/blog/ If you are going to donate blood after diving, tell the nurse to put the blood in a glass bottle instead of the usual plastic bag. Keeps the blood from loosing it's fizz, and going flat. > I would like to know if a diver is more inclined to get DCS if he donates > blood 12 hours prior to dives that involve some minor (10-15 min) mandatory > deco stops and dove with conservative tables. Dive and deco done on 30%. > Plenty of fluids taken. >From: BUFF5200 buff5200@aol.com >Date: 9/16/2004 9:21 AM Eastern Daylight Time [quoted text clipped - 4 lines] >plastic bag. Keeps the blood from loosing it's fizz, >and going flat. Lay off the crack. Popeye "God, God, why did you put so many a.sholes in the world at the same time?" Major Santini <snip> You might want to check the clock on your PC... It shows that you posted this on 9/16 at 09:21 (your local time)... It *could* be the news server that is having the problem, but it might be your machine also... |
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