A Patient Who Has HF Receives Digoxin (Lanoxin) and an Angiotensin-Converting

A patient who has HF receives digoxin (Lanoxin) and an angiotensin-converting enzyme (ACE) inhibitor. The patient will begin taking spironolactone (Aldactone) . The patient asks why the new drug is necessary. The nurse will tell the patient that spironolactone will be given for which reason?

A) To enhance potassium excretion
B) To increase cardiac contractility
C) To minimize fluid losses
D) To provide cardioprotective effects