A patient with a history of hypertension is admitted for a procedure. If the patient's arterial pressure decreases, which clinical manifestation would the nurse expect to see?
a. Decreased heart rate
b. Increased heart rate
c. Decreased blood pressure
d. Syncope
ANS: B
When arterial pressure decreases, the vasoconstrictor center causes constriction of nearly all arterioles, leading to an increase in peripheral resistance, constriction of veins, increasing venous return, and subsequent acceleration of the heart rate. A decrease in arterial pressure would not cause a decrease in the heart rate or blood pressure, nor would it cause syncope.
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