The Nurse Administers a Dose of Digoxin (Lanoxin)to a Patient

The nurse administers a dose of digoxin (Lanoxin) to a patient who has heart failure and returns to the room later to reassess the patient.Which finding indicates that the medication is effective?

A) Decreased dyspnea
B) Decreased urine output
C) Increased blood pressure
D) Increased heart rate