To manage heart failure a client has been taking several m…

  To manage heart failure a client has been taking several medications, including furosemide 40 mg by mouth twice a day. The client develops severe muscle cramps and fatigue, and laboratory tests confirm the presence of hypokalemia. Potassium chloride intravenously (IV) and ECG monitoring have been prescribed. Which ECG change associated with hypokalemia should the nurse expect to observe?