A 32 year old high altitude mountaineer is observed to have a hematocrit of 70%. Which of the following represents the most likely cause/explanation
Correct Answer: Polycythemia with increased red cell mass
Description: Erythropoietin secretion increases promptly on ascent to high altitude. The increase in circulating red blood cells triggered by the erythropoietin begins in 2-3 days and is sustained as long as the individual remains at high altitude.
Category:
Physiology
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