This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S, Subject name: Medicine
Beta-blocker therapy after acute myocardial infraction is contraindicated in which of the following conditions? 
Select and explain. 
A. Hea Failure, B. Ohostatic hypotension, C. Paptic ulcer disease, D. Bronchial asthma
B: Ohostatic hypotension
Answer: B: Ohostatic hypotension 
Explanation: Medications that affect the autonomic nervous system may also cause ohostatic hypotension. Beta blocker medications such as metoprolol (Inderal) block the beta-adrenergic receptors in the body, preventing the hea from speeding up, preventing the hea from contracting as forcefully, and dilating blood vessels. Ref Davidson edition23rd pg 463