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Atrial Fibrillation

Atrial Fibrillation JAMA PATIENT PAGE | Cardiology Atrial fibrillation is a common arrhythmia (abnormal heart rhythm). The heart has 4 chambers: the right and left atria (upper cham- Normal heart rhythm Atrial fibrillation Electrical activity starts in the SA node. Electrical activity in the atria is bers) and the right and left ventricles (lower chambers). A normal The atria contract, and blood empties disorganized. The atria quiver, heartbeat begins in the right atrium. The sinoatrial (SA) node is a into the ventricles. and blood may pool and form clots. collection of specialized cells that initiate an electrical signal that trav- SA node els through the heart muscle. This signal causes the atria to con- Left Right Clot atrium atrium tract, which pumps blood from the atria into the ventricles. The sig- nal travels through the atrioventricular (AV) node and into the muscle around the ventricles. When the ventricles contract, blood is pumped to the lungs and the rest of the body. AV node BLOOD Heart rate is the number of times your heart beats in 1 minute. FLOW Electrical Heart rhythm is the regularity of your heartbeat. In a normal rhythm, signal Right heartbeats are evenly spaced. ventricle Left In atrial http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png JAMA American Medical Association

Atrial Fibrillation

Thompson, Amy E.
JAMA , Volume 313 (10) – Mar 10, 2015
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Atrial Fibrillation

Abstract

JAMA PATIENT PAGE | Cardiology Atrial fibrillation is a common arrhythmia (abnormal heart rhythm). The heart has 4 chambers: the right and left atria (upper cham- Normal heart rhythm Atrial fibrillation Electrical activity starts in the SA node. Electrical activity in the atria is bers) and the right and left ventricles (lower chambers). A normal The atria contract, and blood empties disorganized. The atria quiver, heartbeat begins in the right atrium. The sinoatrial (SA) node is a into the...
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Publisher
American Medical Association
Copyright
Copyright 2015 American Medical Association. All Rights Reserved. Applicable FARS/DFARS Restrictions Apply to Government Use.
ISSN
0098-7484
eISSN
1538-3598
DOI
10.1001/jama.2015.1337
pmid
25756456
Publisher site
See Article on Publisher Site

Abstract

JAMA PATIENT PAGE | Cardiology Atrial fibrillation is a common arrhythmia (abnormal heart rhythm). The heart has 4 chambers: the right and left atria (upper cham- Normal heart rhythm Atrial fibrillation Electrical activity starts in the SA node. Electrical activity in the atria is bers) and the right and left ventricles (lower chambers). A normal The atria contract, and blood empties disorganized. The atria quiver, heartbeat begins in the right atrium. The sinoatrial (SA) node is a into the ventricles. and blood may pool and form clots. collection of specialized cells that initiate an electrical signal that trav- SA node els through the heart muscle. This signal causes the atria to con- Left Right Clot atrium atrium tract, which pumps blood from the atria into the ventricles. The sig- nal travels through the atrioventricular (AV) node and into the muscle around the ventricles. When the ventricles contract, blood is pumped to the lungs and the rest of the body. AV node BLOOD Heart rate is the number of times your heart beats in 1 minute. FLOW Electrical Heart rhythm is the regularity of your heartbeat. In a normal rhythm, signal Right heartbeats are evenly spaced. ventricle Left In atrial

Journal

JAMA – American Medical Association

Published: Mar 10, 2015

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