Hyperventilation results in all of the following EXCEPT
Correct Answer: increased PCO2
Description: Hyperventilation is initiated due to an increase in PCO2. The increased rate of breathing "blows off" excess CO2. Thus, hyperventilation results in a decrease of PCO2 to its normal physiologic range. The increased respiratory rate causes a ↑PO2.
The resultant decrease in CO2 causes hypocapnia.
The resultant decrease in PCO2 causes vasoconstriction, leading to ↓cerebral blood flow.
Respiratory alkalosis occurs due to the ↑pH.
Category:
Medicine
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