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 indication of hypokalemia?

A. Diarrhea. Diarrhea is more commonly a cause of potassium loss rather than a direct sign of hypokalemia. While it can lead to hypokalemia over time, it is not a direct indication of low potassium levels. It is a potential cause. B. Elevated blood pressure. Hypokalemia typically does not present with elevated blood pressure. In fact, it may cause hypotension due to impaired cardiac muscle function. Elevated blood pressure is not a specific sign pointing toward low potassium levels. C. Muscle weakness. Muscle weakness is a classic symptom of hypokalemia. Low potassium levels impair neuromuscular function, leading to generalized weakness, especially in clients on digoxin, which can increase the risk of digoxin toxicity in the presence of hypokalemia. D. Tetany. Tetany is more commonly associated with hypocalcemia rather than hypokalemia. Although severe electrolyte imbalances can cause neuromuscular excitability, tetany is not a hallmark symptom of low potassium levels.