Which term describes a shift from normal heart rhythm?

The term that describes a shift from a normal heart rhythm is "arrhythmia." Arrhythmias are abnormal heart rhythms that can occur in various forms, including irregular heartbeats, skipped beats, or a heartbeat that is too fast or too slow. This term encompasses a wide range of heart rhythm disturbances, which can be caused by various factors, including heart disease, electrolyte imbalances, or medication effects. Recognizing arrhythmias is crucial in clinical settings, especially for patients undergoing procedures like hemodialysis, where heart function needs to be monitored closely.

Tachycardia and bradycardia are specific types of arrhythmias where the heart beats excessively fast or slow, respectively, but they do not cover the entire spectrum of potential abnormal rhythms. Hypertension refers to high blood pressure and does not pertain to heart rhythm directly.