What term describes a heart rate lower than 60 beats per minute?

Bradycardia is the term used to describe a heart rate that is lower than 60 beats per minute. This condition can indicate several underlying health issues, such as problems with the heart's electrical system or effects from certain medications. It's important because a heart rate that is too low may lead to insufficient blood flow to the organs and body tissues, potentially causing symptoms like dizziness, fatigue, or fainting.

The other terms in the question refer to different cardiac conditions. Tachycardia denotes a heart rate that exceeds 100 beats per minute, indicating a faster than normal pace. Arrhythmia refers to irregular heart rhythms that can be either too fast, too slow, or inconsistent. Normalcy simply refers to a state of being normal, which does not provide any specific information about heart rate. Understanding these distinctions helps health care providers assess and respond appropriately to varying heart rates and their potential implications.