Which medical abbreviation refers to an irregular heartbeat?

The abbreviation "A-Fib" stands for atrial fibrillation, which is a specific type of irregular heartbeat characterized by chaotic electrical activity in the atria of the heart. This condition leads to an irregular and often rapid heart rate, which can result in poor blood flow and increases the risk of stroke. A-Fib is a common arrhythmia and is significant in emergency medicine, as it may require urgent intervention depending on the patient's condition.

Other abbreviations such as "HR" stands for heart rate, which measures how many times the heart beats in a minute but does not specify the rhythm. "AF" is an abbreviation that can refer to atrial fibrillation but is not as commonly used as A-Fib in clinical settings. "VT" refers to ventricular tachycardia, which is a different arrhythmia that originates in the ventricles and is typically more life-threatening than atrial fibrillation. Each of these terms highlights different aspects of cardiac function or arrhythmias but A-Fib is specifically used to denote the irregularity associated with atrial fibrillation.