Sick Sinus Syndrome
(SSS; Bradycardia-Tachycardia Syndrome; Sinus Node Dysfunction)
- Bradycardia —abnormally slow heart rate
- Tachycardia —abnormally fast heart rate
- Bradycardia-tachycardia—the heart alternates between too fast and too slow
|Anatomy of the Heart|
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- Intrinsic causes (problems within the heart tissue), such as degeneration of the sinus node, long-term illness, or surgical injury
- Extrinsic causes (outside factors acting on the heart tissue), such as exposure to toxins or certain pharmacological agents
- Heart palpitations
- Chest pain
- Confusion or lightheadedness
- Facial flushing
- Electrocardiogram (EKG)—measures the electrical activity of the heart and can detect abnormal heart rhythms
- Holter monitoring—continuous monitoring to observe episodes of tachycardia and bradycardia over an extended period of time
- Electrophysiology study (EPS)—invasive test where electrical wires are placed into the heart to test the conduction system of the heart
- Make sure to get treatment for any heart disorders you might have.
- Make sure any doctor you see is aware of your heart conditions. Some medications should be avoided.
American Heart Association http://www.heart.org
Heart Rhythm Society http://www.hrsonline.org
Canadian Cardiovascular Society http://www.ccs.ca
Heart and Stroke Foundation of Canada http://www.heartandstroke.com
Adan V, Crown LA. Diagnosis and treatment of sick sinus syndrome. Am Fam Physician. 2003;67(8):1725-1738.
Sick sinus syndrome. EBSCO DynaMed website. Available at: http://www.ebscohost.com. Updated October 21, 2014. Accessed December 30, 2014.
Sick sinus syndrome. Heart Rhythm Society website. Available at: http://www.hrsonline.org/Patient-Resources/Heart-Diseases-Disorders/Sick-Sinus-Syndrome#axzz3NOr35s6f. Accessed December 30, 2014.
Sinus node dysfunction. The Merck Manual Professional Edition website. Available at: http://www.merckmanuals.com/professional/cardiovascular%5Fdisorders/arrhythmias%5Fand%5Fconduction%5Fdisorders/sinus%5Fnode%5Fdysfunction.html. Updated September 2013. Accessed December 30, 2014.
- Reviewer: Michael J. Fucci, DO
- Review Date: 12/2014 -
- Update Date: 12/20/2014 -
This content is reviewed regularly and is updated when new and relevant evidence is made available. This information is neither intended nor implied to be a substitute for professional medical advice. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with questions regarding a medical condition.
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