In the early compensatory stage of shock, which mechanism is triggered? Decreased sympathetic stimulation Increased sy...
- In the early compensatory stage of shock, which mechanism is
triggered?
- Decreased sympathetic stimulation
- Increased sympathetic stimulation
- Increased parasympathetic stimulation
- Decreased systemic stimulation
Homework Answers
Ans) b. Increased sympathetic stimulation
Explaination:
- Compensatory Stage
The individual will begin to hyperventilate to rid the body of
carbon dioxide to raise the blood pH (lower the acidity). As a
result, the baroreceptors in the arteries detect the hypotension
and initiate the release of epinephrine and norepinephrine to
increase heart rate and blood pressure.
- In the compensatory stage, the baroreceptors respond to the decreased cardiac output by stimulating the sympathetic nervous system to release catecholamines to improve myocardial contractility and vasoconstriction, leading to increased venous return and arterial blood pressure.
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