What is the definition of "bradycardia"?

Bradycardia is defined as an abnormally slow heart rate, typically characterized as being fewer than 60 beats per minute in adults. This condition can occur due to various factors, including increased vagal tone, certain medications, or underlying health issues such as heart disease. Recognizing bradycardia is important in clinical settings, as it can indicate a potentially serious underlying condition that may require intervention.

The other options do not accurately describe bradycardia. An abnormally high heart rate is referred to as tachycardia, while an abnormally normal heart rate does not exist as a clinical term. An irregular heartbeat, known as arrhythmia, involves variations in timing or rhythm rather than a specific rate that is classified as bradycardia. Understanding these distinctions helps in accurately identifying and responding to cardiac conditions.