A 71-year-old man with a history of heart disease and diabetes has had an antihistamine prescribed. The nurse is concerned with this prescription because of the risk for what?
A) Cardiac arrhythmias
B) Increased salivation and choking
C) Severe constipation
D) Insomnia
A
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The patient has history of heart disease. Antihistamines have been associated with prolongation of the QT interval, which can lead to potentially fatal cardiac arrhythmias. Antihistamines dry the mucosa and are not associated with increased salivation or choking, can cause drowsiness, and are not associated with insomnia or severe constipation.
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