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A 64-year-old man with stable angina is being treated with atenolol and aspirin. He reports that over the last week, his symptoms have been worsening. His physician decides to add a new medication to his regimen. Several days later, he presents to the emergency room complaining of severe dizziness. On physical examination, his blood pressure is 100/70 mm Hg and his heart rate is 38 beats per minute. Which of the following medications was most likely administered?

A. Nifedipine
B. Captopril
C. Verapamil
D. lsosorbide dinitrate
E. Prazosin

D ?

Its verapamil.

A,D,E can cause tachy
B has no direct big eff on heart.

C. Verapamil

NON-DIHYDROPIRIDINE Ca2+ channel blockers have similar effect to Beta 1 blockers (A-M "-olol")

Yes its C verapamil , with negative chronotropic effects.