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A patient presents to the emergency department with symptoms of asthma. Due to receptor specificity, which of the following drugs would have a beneficial effect on this patient’s asthma symptoms? (See Ch 18, 9th ed., Adrenergic agents, page 295] O 1) epinephrine (Adrenalin) 2) dobutamine (Dobutrex] 3) norepinephrine (Levophed] 4) dopamine [Intropin)
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