A Primary Care NP Is Preparing to Order Digoxin for an 80-Year-Old

A primary care NP is preparing to order digoxin for an 80-year-old patient who has systolic heart failure.The NP obtains renal function tests,which are normal.The NP should:

A) prescribe a digoxin 0.125 mg tablet once daily.
B) give an initial dose of 0.5 mg digoxin tablet and then 0.125 mg every 6 hours × 4.
C) administer a digoxin 0.6 mg capsule once and then 0.3 mg every 8 hours × 3.
D) administer a loading dose of intravenous digoxin in the clinic and then give 0.125 mg once daily.