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General Diving Forum Anything which is diving related but not covered by the other forums. Want to make an announcement, found a cool diving video, need to blow of steam, whatever - it's open to you.
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December 20th, 2007, 12:59 PM
| #1 (permalink) |
| New Member  Join Date: Nov 2005 Location: Plymouth, UK
Posts: 580
  | Giving Blood and diving? Yes just as it says. If I give blood what is the effect on fitness to dive?
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December 20th, 2007, 01:10 PM
| #2 (permalink) |
| Smurf #1  Join Date: Aug 2007 Location: Papendrecht, The Netherlands
Posts: 385
 | Your fluid levels should be up back to normal within a day or two at the most. Red-bloodcell count and "blood-plates" (correct english term?) will take a bit longer. Would have to look it up. But I would be interested in how long any possible effects of the drop in red bloodcell count would be, if any. Would there be any deco related restrictions once the fluid level is back to normal?
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December 20th, 2007, 02:08 PM
| #3 (permalink) |
| Fine Upstanding Member  Join Date: May 2006 Location: Telford, UK
Posts: 799
| I would suspect that loss of red blood cell mass would have minimal effect on oxygen transport. You will have less haemoglobin to transport the oxygen but it will be more efficient when diveing than at the surface because of the increased ppO2, which will also drive O2 into solution in the plasma to some extent, helping to compensate for loss of RBCs. As far as nitrogen elimination is concerned I can't see this being compromised once your circulating volume has been restored.
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December 20th, 2007, 02:26 PM
| #4 (permalink) |
| New Member Join Date: Nov 2005 Location: Plymouth, UK
Posts: 580
| It just struck me that if I go and give a pint blood away, then I must be at a disadvantage until fully normal blood volume is restored, after all they don't take just red blood cells or whatever, they take a pint of everything!
__________________ I once enjoyed a sado-masachistic frenzy of total tintintabulation leading to a state of metampsychosis... or did I make that up? www.bananafrogcars.co.uk |
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December 20th, 2007, 02:31 PM
| #5 (permalink) |
| Smurf #1 Join Date: Aug 2007 Location: Papendrecht, The Netherlands
Posts: 385
| Don't they give the advice NOT to work with machines and stuff the rest of the day? Sound logically to apply at least the same period before diving. Although with the importance of fluids during deco, i'd say just stay out of the wet stuff for a some days to give you body time to replace the plasma.
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December 20th, 2007, 02:31 PM
| #6 (permalink) |
| New Member Join Date: Nov 2005 Location: Plymouth, UK
Posts: 580
| Quote: (Originally Posted by TobyFish)  . You will have less haemoglobin to transport the oxygen . Exactly if I have 10% less blood, I assume I have 10% less heamoglobin, and therefore even if it is more efficient due to higher PPO2, its still down on efficiency by 10%.Now we increase the 02 for deco, but I am 10% down! I don't fancy being the one in the chamber with the diving Doc telling me I am numpty!
__________________ I once enjoyed a sado-masachistic frenzy of total tintintabulation leading to a state of metampsychosis... or did I make that up? www.bananafrogcars.co.uk |
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December 20th, 2007, 02:33 PM
| #7 (permalink) |
| New Member Join Date: Nov 2005 Location: Plymouth, UK
Posts: 580
| Quote: (Originally Posted by Marijn) Don't they give the advice NOT to work with machines and stuff the rest of the day? Sound logically to apply at least the same period before diving. Although with the importance of fluids during deco, i'd say just stay out of the wet stuff for a some days to give you body time to replace the plasma. It was the stay away from machinery that made me think. After all that's on the surface where we are designed to wander about!
__________________ I once enjoyed a sado-masachistic frenzy of total tintintabulation leading to a state of metampsychosis... or did I make that up? www.bananafrogcars.co.uk |
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December 20th, 2007, 03:15 PM
| #8 (permalink) |
| Smurf #1 Join Date: Aug 2007 Location: Papendrecht, The Netherlands
Posts: 385
| The warning about machinery is because of risk of fainting I just found out. Definately apply's to diving af well i'd say
__________________ Its a fact that the humans can't go without water for more than 3 days |
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December 20th, 2007, 03:40 PM
| #9 (permalink) |
| New Member Join Date: Nov 2005 Location: Plymouth, UK
Posts: 580
| Quote: (Originally Posted by Marijn) The warning about machinery is because of risk of fainting I just found out. Definately apply's to diving af well i'd say Oh I should say! 
__________________ I once enjoyed a sado-masachistic frenzy of total tintintabulation leading to a state of metampsychosis... or did I make that up? www.bananafrogcars.co.uk |
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December 20th, 2007, 04:37 PM
| #10 (permalink) |
| Moderator  Join Date: Sep 2006 Location: Up North
Posts: 1,212
| I remember giving blood one Friday afternoon after work then Saturday morning I went to the gym, I felt awful and had to stop. Now I don't do anything strenuous for at least 24 hours. Actually I don't seem to do anything strenuous at all |
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