It depends on the amount of blood loss. At first, blood pressure will go up as the heart pumps faster and harder to compensate. If your pressure is normally around 140/80, it may increase to about 160/90 with loss of about a pint. The normal amount you would give if you donate blood.
After that, your pressure will fall because the arteries have dilated to compensate for the extra push of blood, but now there isn't enough volume, so pressure begins to fall.
As the pressure falls, the arteries constrict back, but if the volume is not enough to fill the arteries, then the pressure continues to fall, causing hypo-perfusion- AKA shock.
If left untreated, the blood first leaves the capillaries- small veins in the skin- and keeps compensating the internal organs. This causes the pale complexion, cool dry skin that is first noticable with shock.
From there, the lesser organs begin to shut down- digestive system, waste system, etc. followed by the vital organs, leading to death.
2007-03-09 02:33:20
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answer #1
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answered by glen w 3
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loss of blood would lower blood pressure.
many blood pressure medications work
by removing water form the bloodstream.
so removing blood would have the same effect.
2007-03-09 02:26:54
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answer #2
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answered by question 1
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It would lower it. It is your homework, you discuss it.
2007-03-09 02:11:42
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answer #3
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answered by Steve H 5
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