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| | Sick sinus syndrome |
 | | Sick sinus syndrome, also called Bradycardia-tachycardia syndrome is a group of abnormal heartbeats (arrhythmias) presumably caused by a malfunction of the sinus node, the heart's "natural" pacemaker. |
 | | Sick sinus syndrome is more common in elderly adults, where the cause is often a non-specific, scar-like degeneration of the cardiac conduction system. |
 | | Cardiac surgery, especially to the atria, is a common cause of sick sinus syndrome in children. |
| www.xasa.com /wiki/en/wikipedia/s/si/sick_sinus_syndrome.html (227 words) |
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