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Atrial Fibrillation
16" x 12"
$36
$18
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Photographic Print

Atrial fibrillation Artwork of a section through a human heart during atrial fibrillation a rapid irregular heartbeat In the background are ECG electrocardiogram traces showing irregularity of the heart rhythm arrhythmia The electrical impulses that coordinate heart contractions start at the sinoatrial node red upper left and run down to the atrioventricular node red upper centre When the atria upper heart chambers contract irregularly and too rapidly the ventricles lower heart chambers have trouble keeping pace The main symptom of atrial fibrillation is palpitation ECGs are used to diagnose heart conditions such as arrhythmia