Atrial fibrillation (AF) is a particular type of heartbeat (arrhythmia) characterized by an extremely fast irregular rhythm.
When at rest, the healthy heartbeats between 60 and 90 times a minute, with the atria (the two upper chambers of the heart) beating slightly earlier than the ventricles (the two lower chambers of the heart). The rate and timing of contractions (beats) are regulated by electrical impulses generated by the sinoatrial node (a specialized group of cells that produce small...
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Source: ADAM Encyclopedia
Atrial fibrillation/flutter is a common type of abnormal heartbeat in which the heart rhythm is fast and irregular. Alternative Names ... Read more »
Source: ADAM Encyclopedia
ASD Treatment ASD may not require treatment if there are few or no symptoms, or if the defect is small. Surgical closure of the defect... Read more »
Source: HealthCentral Encyclopedia
Article updated and reviewed by Neil Siecke, MD, Clinical Insturctor, UCSD Division of Cardiology. Editorial review provided by VeriMed Healthcare... Read more »
Source: ADAM Encyclopedia
VF; Fibrillation - ventricular Prevention An implantable defibrillator can help prevent future VF episodes in some patients. Others may... Read more »
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