Oxygen in histotoxic hypoxia

# The beneficial effect of oxygen therapy in histotoxic hypoxia is about:
A. 0 %
B. 50 %
C. 100 %
D. 30 %

The correct answer is A. 0%

Histotoxic hypoxia refers to hypoxia secondary to the inability of the cells to utilize oxygen.
In histotoxic hypoxia, oxygen therapy is  not beneficial as tissue oxygenation is itself defective. 

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