Which term means the heart beating too slowly, a type of arrhythmia?

• A. Tachycardia
• B. Bradycardia
• C. Atrial fibrillation
• D. Congestive heart failure

Answer: (B)

Bradycardia refers to a heart rate that is slower than normal, typically defined as fewer than 60 beats per minute in adults. It describes a slow, regular rhythm, which fits the idea of a heart beating too slowly and is categorized as a type of arrhythmia when the rhythm is abnormal.

Tachycardia means a fast heart rate, not slow. Atrial fibrillation is an irregular, often rapid rhythm due to chaotic atrial activity, not simply slow. Congestive heart failure is a pumping problem—the heart’s ability to pump blood effectively—rather than a rhythm term.