Lecture: Physiology of Blood

(1) Healthy hemoglobin levels in adults are 12 to 14 g/dL. (2) At about 5 g/dl desaturation, the person will begin to show cyanotic blue discoloration. (3) Some patients in cardiac arrest have deep blue skin, although some are pale. (4) Cyanosis may develop earlier in patients with high hemoglobin levels. ................
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