What is the noxious percent of blood loss?
If someone were to have their blood drained, what is the smallest percent of their total amount of blood would they have to lose to be toxic? Help please!
Answers:
There is no single quantification of blood loss that is universally lethal.
We measure anemia/blood loss within Hemoglobin (Hgb) and Hematocrit (Hct) levels.
Hgb < ~12 and Hct < ~ 35 is technically low or anemic in most hospital labs, but symptoms are rare at these level.
An otherwise healthy patient usually complains of fatigue, dizziness, cold intolerance and other symptoms at Hgb <~9
We consider transfusing patients with Hgb <8 because this is be patients may incur kidney, heart and liver shock from lack of blood.
Hgb <6 is universally life threatening.
I have never encounter a living (or will-continue-to-be-living) patient with a Hgb <3.
Age and pre-existing conditions (heart failure, arrythmia...) could exacerbate vivacity threatening complications at a much higher Hgb.
Also, patients with chronic disease (renal failure, cancer...) may meander around with Hbg<9 without any symptoms at all. Source(s): MD
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Answers:
There is no single quantification of blood loss that is universally lethal.
We measure anemia/blood loss within Hemoglobin (Hgb) and Hematocrit (Hct) levels.
Hgb < ~12 and Hct < ~ 35 is technically low or anemic in most hospital labs, but symptoms are rare at these level.
An otherwise healthy patient usually complains of fatigue, dizziness, cold intolerance and other symptoms at Hgb <~9
We consider transfusing patients with Hgb <8 because this is be patients may incur kidney, heart and liver shock from lack of blood.
Hgb <6 is universally life threatening.
I have never encounter a living (or will-continue-to-be-living) patient with a Hgb <3.
Age and pre-existing conditions (heart failure, arrythmia...) could exacerbate vivacity threatening complications at a much higher Hgb.
Also, patients with chronic disease (renal failure, cancer...) may meander around with Hbg<9 without any symptoms at all. Source(s): MD
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