A patient with a diagnosis of hypokalemia is likely to exhibit which of the following electrocardiographic changes?

A Prolonged QT interval
B Shortened PR interval
C Flattened T waves
D U waves ✓

Explanation

Hypokalemia is characterized by low potassium levels, which can lead to the appearance of U waves on an electrocardiogram (ECG).

Source

Harrison's Principles of Internal Medicine
Electrolytes and Acid-Base Balance Cardiology Electrocardiography Hard MEDICAL Confidence: high