Which term describes a resting heart rate slower than normal?

• A. Tachycardia
• B. Arrhythmia
• C. Bradycardia
• D. Hypertension

Answer: (C)

Bradycardia describes a resting heart rate that is slower than normal. In adults, normal resting rate is about 60 to 100 beats per minute; when it drops below 60, it’s labeled bradycardia. It can be normal in well-trained athletes or during sleep, but it may signal issues with the heart’s electrical system or effects from medications if symptoms like dizziness or fatigue occur. The other terms refer to different concepts: a faster-than-normal heart rate is tachycardia, an irregular rhythm is arrhythmia, and high blood pressure is hypertension. So the best fit for a resting rate slower than normal is bradycardia.