The intensive care unit nurse is reviewing a patient’s electronic medication record. The patient is known to have a prolonged QT interval. Which of the following medication orders should the nurse question?
Metformin (Glucophage®) 500 mg PO twice a day
Diphenhydramine (Benadryl®) 50 mg PO every six hours
Nadolol (Corgard®) 40 mg PO daily
Hydrochlorothiazide (Microzide®) 25 mg PO daily
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