A newly diagnosed hypertensive patient is started on prazosin.Within the hour,he complains of dizziness and loses consciousness.What has happened?
A) The drug activated the baroreceptors causing an intense parasympathetic discharge,thereby increasing blood pressure and precipitating a mild stroke.
B) The prazosin has decreased his blood pressure too much;the drug-induced hypotension caused the fainting event (syncope) .
C) The prazosin causes spasm of the cerebral blood vessels,which,in turn,causes loss of consciousness.
D) The patient experienced a hypertensive crisis.
Correct Answer:
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