An elderly female client who reports increasing fatigue has been diagnosed with aortic stenosis, a disease that her primary care provider believes may have been long-standing
Which of the following compensatory mechanisms has most likely maintained the woman's ejection fraction until recently?
A) Left ventricular hypertrophy
B) Increased blood pressure
C) Increased heart rate and stroke volume
D) Aortic dilation
Ans: A
Feedback:
Because aortic stenosis develops gradually, the left ventricle has time to adapt by increasing in wall thickness to maintain a normal ejection fraction. Increased blood pressure and heart rate and dilation of the aorta are not responses that mitigate the effects or aortic stenosis.
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