When a person is in shock, a nurse remembers impairment in cellular metabolism is caused by:
a. release of toxic substances.
b. free radical formation.
c. inadequate tissue perfusion.
d. lack of nervous or endocrine stimulation.
ANS: C
In shock, impaired cellular metabolism is caused by inadequate tissue perfusion.
Impairment of cellular metabolism is the result of inadequate tissue perfusion; toxic substances could develop, but it would be secondary to the inadequate perfusion. Free radicals are not the cause of impaired cellular metabolism. The lack of nervous control would lead to vasodilation, but perfusion still occurs.
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