Sick sinus syndrome

Sick sinus syndrome is common in elderly people. It is caused by a disease sinus (SA) node. It can result in various arrhythmias including sinus bradycardia, sinus arrest, SA block, alternating with sinus tachycardia, atrial tachycardia, atrial flutter or atrial fibrillation. The slow rhythms often require a pacemaker, while the fast rhythms often require medications (e.g. beta blockers).

See also: Syndromes

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In the ECGquest archives, this ECG has been tagged with: - Syncope 12-Lead Fibrillation waves Normal rate Atrial fibrillation Sick sinus syndrome Dr Smith's ECG Blog CC BY-NC
Syncope and Atrial fibrillation in a Healthy 70-something Male

This ECG is from a man in his 70s presented with syncope for 20 seconds. He had no past medical history. He recovered fully.