Which assessment finding would prompt the nurse to ask the healthcare provider to hold donepezil for a client with Alzheimer's disease?

A. The client's heart rate is 50 beats/min: Donepezil, a cholinesterase inhibitor, can enhance parasympathetic activity and lead to bradycardia or heart block. A heart rate of 50 beats/min is concerning and would prompt the nurse to ask the healthcare provider whether the medication should be held. B. The client displays symptoms of sundowning: Sundowning is a common behavioral manifestation of Alzheimer’s disease and is not a contraindication for donepezil therapy. It is typically managed with environmental and behavioral strategies rather than medication discontinuation. C. The client has reduced serum uric acid levels: Uric acid levels are not directly influenced by donepezil and do not affect its safety profile. A reduction in uric acid is not a reason to withhold this medication. D. The client's fasting blood glucose level is 80 mg/dL: A blood glucose of 80 mg/dL is within normal range and is unrelated to donepezil therapy. This finding does not warrant holding the medication.