The patient has bilateral casts on the upper extremities, so the nurse will be measuring the blood pressure in the legs. Which of the following does the nurse expect the diastolic pressure to be?
a. 10 to 40 mm Hg higher than in the brachial artery
b. 20 to 30 mm Hg lower than in the brachial artery
c. 50 mm Hg higher than in the brachial artery
d. Essentially the same as in the brachial artery
D
Feedback
A The systolic pressure, not the diastolic pressure, is 10 to 40 mm Hg higher than in the brachial artery.
B Expecting the diastolic pressure to be 20 to 30 mm Hg lower than in the brachial artery is incorrect.
C Expecting the diastolic pressure to be 50 mm Hg higher than in the brachial artery is incorrect.
D When measuring the BP in the legs, systolic pressure is usually higher by 10 to 40 mm Hg than that in the brachial artery, but the diastolic pressure is the same.
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