Atrial fibrillation

An irregular, often rapid heart rate that commonly causes poor blood flow.

Overview

Atrial fibrillation is an irregular, often rapid heart rate that commonly causes poor blood flow. The heart's upper chambers (atria) beat out of coordination with the lower chambers (ventricles).

Symptoms

Symptoms include palpitations, shortness of breath, and weakness.

Treatments

Treatments include drugs, electrical shock, and surgery.