USMLE Forum - Largest USMLE Community

22>A 55-year-old male with hypertension and a past medical history of
myocardial infarction is prescribed atenolol. This medication will
lower his blood pressure by
A. blocking catecholamine release
B. blocking the conversion of angiotensin I to angiotensin II
C. decreasing cardiac output
D. decreasing intravascular volume
E. increasing renin release from the kidney

C. decrease CO

Atenolol is a selective beta 1 blocker and it acts by decreasing CO.
Answer is c.

correct.Major by dec CO and minor by dec renin.