Bradycardia is characterized by a heart rate less than how many beats per minute?

• A. 50 bpm
• B. 55 bpm
• C. 60 bpm
• D. 65 bpm

Answer: (C)

Bradycardia is defined as a slower than normal heart rate, specifically one that is less than 60 beats per minute (bpm). This threshold is widely accepted in medical practice, as a resting heart rate below 60 bpm can indicate a variety of underlying health conditions, including issues with the heart's electrical conduction system or increased vagal tone.

In clinical terms, a heart rate of less than 60 bpm could result in insufficient cardiac output, especially during physical activities, and might lead to symptoms such as fatigue, dizziness, or syncope. Understanding this definition is crucial for correctly identifying bradycardia and determining if further evaluation or treatment is needed based on the patient's clinical presentation.