A nurse is collecting data from a client who is in renal failure. The nurse should identify which of the following findings is a manifestation of hyperkalemia.

A. Incorrect. Dry mucous membranes are not typically associated with hyperkalemia. B. Correct. Hyperkalemia can lead to cardiac dysrhythmias, including irregular heart rate. C. Incorrect. Hyperactive reflexes are more commonly associated with hypokalemia (low potassium levels. D. Incorrect. Trousseau's sign is a clinical indicator of hypocalcemia, not hyperkalemia.