A client is constipated and trying to have a bowel movement. How does holding the breath and pushing down (the Valsalva maneuver) affect the pulse?
A) Left ventricle pumps more forcefully; pulse is stronger
B) Stimulates the vagus nerve to increase the rate
C) Stimulates the vagus nerve to decrease the rate
D) Right ventricle is less efficient; pulse is thready
Ans: C
Parasympathetic stimulation via the vagus nerve decreases the heart rate. The Valsalva maneuver stimulates the vagus nerve, resulting in a slower pulse rate.
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