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What is the Oygen saturation of systemic venous blood??

915 views 0 replies 1 participant last post by  Nitika 
#1 · (Edited)
Hello
I got a question..
Goljan RR ( Page 3 third ed, under the graph ) states that in a normal oxygen binding curve, only 50% of its oxygen is released to the tissues, implying that the oxygen saturation of the venous blood is 50%
But kaplan, Resp Physio ( Page 168, 2011 ed) sates that, the systemic venous blood is 75% saturated.. It sounds more logical, as for the binding of O2 to the third oxygen binding site the minimal Po2 shld be 40 mmHg, (therefore making oxygen 75% saturated), which is exactly what the Po2 of venous blood is.

Am i interpreting goljans' statement wrong!?:confused:
 
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