A patient presents with hypokalemia, which is likely to cause which of the following cardiac arrhythmias?

A Atrial fibrillation
B Ventricular tachycardia
C Torsades de pointes ✓
D Atrioventricular block

Explanation

Hypokalemia can prolong the QT interval, increasing the risk of torsades de pointes, a type of ventricular tachycardia.

Source

Harrison's Principles of Internal Medicine
Electrolytes and Acid-Base Balance Cardiology Electrolyte Imbalances and Cardiac Arrhythmias Hard MEDICAL Confidence: high