Which of the following agents can worsen asthma?

Question

Quizplus · Accepted Answer

In usual doses,the selective,or specific,beta-adrenergic receptor blocking drugs,such as metoprolol,block the beta 1-receptors more than the beta 2-receptors.The selective beta-blockers have some advantages in patients who may have preexisting bronchospastic disease,such as asthma,because they do not block the airway's bronchodilating action.Propranolol is a nonselective beta-adrenergic antagonist.It can inhibit lung beta 2-receptors,which are involved in bronchodilation.

Which of the Following Agents Can Worsen Asthma