A nurse is caring for a client who is taking potassium chloride supplements daily for hypokalemia. Which of the following findings should indicate to the nurse the supplements are effective?

A) Diarrhea: Metabolic alkalosis is more likely to be associated with constipation rather than diarrhea. Diarrhea is typically a cause of metabolic acidosis due to the loss of bicarbonate in stool, rather than a result of metabolic alkalosis.

B) Bradycardia: Bradycardia is not a typical manifestation of metabolic alkalosis. Alkalosis can lead to arrhythmias, but it generally does not cause a slow heart rate. Instead, tachycardia might occur as the body compensates for the altered acid-base balance.

C) Tinnitus: Tinnitus is not a common symptom of metabolic alkalosis. It is more often associated with aspirin toxicity or other conditions affecting the auditory system, rather than changes in acid-base balance.

D) Tetany: Tetany is a common manifestation of metabolic alkalosis. The alkalosis causes a decrease in ionized calcium levels, which increases neuromuscular excitability and can lead to muscle cramps, spasms, and tetany. This is a key sign for nurses to monitor as it indicates significant electrolyte disturbances associated with the alkalotic state.

A) Decreased deep-tendon reflexes: Decreased deep-tendon reflexes can indicate hyperkalemia, which occurs when potassium levels are too high. This is not a sign of effective potassium chloride supplementation for hypokalemia, as it suggests an imbalance in the opposite direction.

B) Regular heart rhythm: A regular heart rhythm is a key indicator that potassium levels are within the normal range. Potassium is crucial for proper cardiac function, and maintaining an adequate level helps prevent arrhythmias and supports effective heart rhythms.

C) Hypoactive bowel sounds: Hypoactive bowel sounds can be associated with various conditions, including electrolyte imbalances like hypokalemia. However, the presence of hypoactive bowel sounds does not directly indicate that potassium chloride supplementation is effective.

D) Respiratory rate 10/min: A respiratory rate of 10/min is below the normal range and can be a sign of respiratory depression or other issues. This finding does not relate to the effectiveness of potassium chloride supplements in treating hypokalemia.