A patient's home medication list includes 'metformin 500mg twice daily.' During admission, the prescriber orders 'metformin 500mg daily.' Per ISMP guidance, the nurse should:
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A
Administer as ordered since the prescriber has clinical authority
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B
Clarify the discrepancy with the prescriber before administering
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C
Increase the dose to match the home regimen independently
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D
Document the discrepancy and administer the ordered dose