An elderly man is brought to the emergency room after ingesting a large quantity of prazosin tablets, a drug that blocks a1 adrenergic receptors, which mediate effects of epinephrine and norepinephrine on the blood vessels and urinary bladder. Which symptom is most likely to be seen in this patient?

Question

Answer

Reduced heart rate (bradycardia)

Answer

Reduction in urinary frequency

Answer

Increased blood pressure

Answer

Dilation of blood vessels (vasorelaxation)

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An elderly man is brought to the emergency room after ingesting a large quantity...

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