sandra
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14. A 72-year-old woman comes to the physician because of an episode of acute substernal chest pain that occurred while she was rushing to catch a bus. She has basilar crackles at both lung bases. S1 is normal and S2 is decreased. A grade 3/6 systolic murmur is heard best at the upper right sternal border and radiates to the neck. The following data obtained during cardiac catheterization were taken before and during exercise:
Left ventricular volume
Aortic pressure
(mm Hg) End-diastolic
(mL) End-systolic
(mL) Heart rate
(/min)
Control 130/70 140 50 85
Exercise 160/80 165 58 120
While exercising, the patient has shortness of breath but no chest pain. Which of the following is the most likely cause of the shortness of breath?
A) Decreased cardiac output during exercise
B) Decreased pulmonary blood flow
C) Increased aortic pressure
D) Increased end-diastolic pressure of the left ventricle during exercise
E) Tachycardia
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| robin082006
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E
this q has been discussed
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| sridevibandaru24
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E
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| dericanthony
Forum Newbie
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yes i think it is E
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