A client with angina pectoris is instructed to take sublingual nitroglycerin tablets PRN for chest pain. Which instruction should the nurse include in the client's teaching plan? A.Take one tablet every 3 minutes, up to five tablets. B.Take one tablet at the onset of angina and stop the activity. C.Replace nitroglycerin tablets yearly to maintain freshness. D.Allow 30 minutes for a tablet to provide relief from angina. B {Ans: Rationale:Nitroglycerin tablets should be taken at the onset of angina, and the client should stop activity and rest. One tablet can be taken every 5 minutes, up to three doses. Nitroglycerin should be replaced every 3 to 6 months, not every 12 months. Nitroglycerin should provide relief in 5 minutes, not 30 minutes.}Two hours after taking the first dose of penicillin, a client arrives at the emergency department complaining of feeling ill, exhibiting hives, having difficulty breathing, and experiencing hypotension. The nurse will develop an immediate plan of care based on which finding? A.Severe acute anaphylactic response B.Side reaction that should resolve C.Idiosyncratic reaction D.Cumulative drug response A {Ans: Rationale: Anaphylaxis related to penicillin can cause a life-threatening allergic response characterized by bronchospasm, laryngeal edema, and a precipitous drop