A nurse is assessing a client who has heart failure and is taking digoxin. Which of the following findings should the nurse identify as an indicati- of hypokalemia?

A. Elevated blood pressure is not a typical sign of hypokalemia. B. Tetany is more indicative of hypocalcemia, not hypokalemia. C. Diarrhea can lead to hypokalemia, but it is not necessarily an indication of it. D. Muscle weakness is a common sign of hypokalemia, and it can be potentiated by digoxin, increasing the risk of toxicity.