Final answer:
The finding that indicates hypokalemia on an ECG of a client receiving furosemide for heart failure is Tall, peaked T-waves.
Step-by-step explanation:
The finding that indicates hypokalemia on an ECG of a client receiving furosemide for heart failure is the Tall, peaked T-waves.
Hypokalemia refers to low levels of potassium in the blood. Potassium is involved in cardiac muscle contraction and any imbalance can affect the electrical activity of the heart.