Sick sinus syndrome causes: Difference between revisions

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Revision as of 17:14, 5 September 2013

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

Sick sinus syndrome can result in many abnormal heart rhythms (arrhythmias), including sinus arrest, sinus node exit block, sinus bradycardia, and other types of bradycardia (slow heart rate). Sick sinus syndrome may also be associated with tachycardias (fast heart rate) such as paroxysmal supraventricular tachycardia (PSVT) and atrial fibrillation. Tachycardias that occur with sick sinus syndrome are characterized by a long pause after the tachycardia.

Causes

Life Threatening Causes

Life-threatening causes include conditions which may result in death or permanent disability within 24 hours if left untreated.

Myocardial infarction

Common Causes

Causes in Alphabetical Order

References

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 ==Causes==
-Abnormal rhythms are often caused or worsened by medications such as [[digitalis]], [[calcium channel blocker]]s, [[beta-blocker]]s, sympatholytic medications, and anti-arrhythmics. Disorders that cause scarring, degeneration, or damage to the conduction system can cause sick sinus syndrome, including [[sarcoidosis]], [[amyloidosis]], [[Chagas' disease]], and cardiomyopathies.
-Sick sinus syndrome is more common in elderly adults, where the cause is often a non-specific, scar-like degeneration of the [[Electrical conduction system of the heart|cardiac conduction system]]. Cardiac surgery, especially to the [[atria]], is a common cause of sick sinus syndrome in children.
-[[Coronary artery disease]], high blood pressure, and aortic and mitral valve diseases may be associated with sick sinus syndrome, although this association may only be incidental.
 ===Life Threatening Causes===
 Life-threatening causes include conditions which may result in death or permanent disability within 24 hours if left untreated.