What does the term “bradycardia” mean?

Bradycardia refers specifically to a slower than normal heart rate, which is typically defined as fewer than 60 beats per minute in adults. This condition can occur due to various reasons, including increased vagal tone, certain medications, and intrinsic problems with the heart's electrical conduction system. In clinical practice, bradycardia can signify underlying health issues, particularly in symptomatic patients who may experience fatigue, dizziness, or syncope.

This understanding of bradycardia is important in differentiating it from other heart rate conditions. For instance, a faster than normal heart rate is known as tachycardia, and a steady heart rate refers to a normal or regular rhythm, neither of which describes bradycardia. Additionally, a variable heart rate that fluctuates is often associated with arrhythmias, which contrast with the description of bradycardia. Therefore, the correct understanding of bradycardia is essential for accurate diagnosis and treatment in cardiovascular practice.