What term describes an abnormally slow resting pulse?

Bradycardia is the term used to describe an abnormally slow resting pulse, typically defined as a heart rate that is less than 60 beats per minute. This condition can arise from various physiological factors including increased vagal tone, certain heart conditions, or as a side effect of medications. It can be significant in clinical practice because if the heart rate is too slow, it may not pump enough blood to meet the body's needs, leading to symptoms such as fatigue, dizziness, or fainting.

In contrast, tachycardia refers to a rapid heart rate exceeding normal resting levels. Arrhythmia describes any irregularity in the heartbeat, which could involve a heart rate that is too slow, too fast, or inconsistent. Hypertension refers to high blood pressure and is unrelated to the heart rate itself. Understanding these terms and their distinctions is critical for effective assessment and diagnosis in a dental or clinical setting.