Atrial Fibrillation: Definition, Clinical Context, and Cardiology Overview
Atrial Fibrillation is a common cardiac arrhythmia (abnormal heart rhythm) in which the atria activate in a rapid, disorganized pattern. It is a clinical condition diagnosed primarily on an electrocardiogram (ECG). It is frequently encountered in emergency care, outpatient cardiology, perioperative medicine, and inpatient telemetry units. It matters because it can affect symptoms, cardiac function, and risks such as thromboembolism (blood clots traveling to organs).