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Sick sinus syndrome is a type of heart rhythm disorder. It affects the heart's natural pacemaker (sinus node), which controls the heartbeat. Sick sinus syndrome causes slow heartbeats, pauses (long periods between heartbeats) or irregular heartbeats (arrhythmias).
Sick sinus syndrome is relatively uncommon. The risk of developing it increases with age. Many people with sick sinus syndrome eventually need an implanted device called a pacemaker to keep the heart in a regular rhythm....
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Most people with sick sinus syndrome have few or no symptoms. Symptoms may be mild or come and go — making them difficult to recognize at first.
Signs and symptoms of sick sinus syndrome may include:
To understand the cause of sick sinus syndrome, it may be helpful to know how the heart typically beats. The heart is made up of four chambers — two upper (atria) and two lower (ventricles). The rhythm of the heart is typically controlled by the sinus node, an area of specialized cells in the right upper heart chamber (right atrium). This natural pacemaker produces electrical signals that trigger each heartbeat. From the sinus node, electrical signals travel across the atria to the ventricles, causing them to co...
The goals of sick sinus treatment are to reduce or eliminate symptoms and to manage any other contributing health conditions. Treatment of sick sinus syndrome may include: Regular checkups Medications Catheter procedures Surgery to implant a device to maintain a regular heartbeat (pacemaker) If you don't have symptoms, your health care provider may simply recommend regular health checkups to monitor ...
For informational purposes only and not a substitute for professional medical advice, diagnosis, or treatment.
© Mayo Clinic
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