A nurse is reinforcing teaching with a client who has a new prescription for digoxin to treat heart failure. Which of the following should the nurse include as an expected effect of this medication?

The nurse should include increased cardiac output as an expected effect of digoxin when reinforcing teaching with the client. Digoxin is a positive inotropic medication that strengthens the force of contraction of the heart, resulting in increased cardiac output. Option a, increased heart rate, is not an expected effect of digoxin. Digoxin may actually decrease heart rate by exerting a negative chronotropic effect. Option c, decreased urinary output, is not an expected effect of digoxin. In fact, digoxin does not directly affect urinary output. Option d, decreased potassium level, is not an expected effect of digoxin. However, digoxin can increase the risk of hypokalemia, so it is important to monitor the client's potassium levels while on the medication.