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What is Sick Sinus Syndrome?

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Did you know that your heart comes with its own built in pacemaker – the sinus node? I guess the fact that we come with a pacemaker already pre-installed and hard-wired into our system should be intuitive, especially since keeping the pace (or beat) is what our heart is, after all, design to do!

Unfortunately, just like the rest of our working and moving parts, they sometimes wear out, break down, or catch a cold. In other words, we (or parts of us) get sick: the sinus node is no exception. The problem with the sinus node is that when gets “sick,” it may come in the form of Sick Sinus Syndrome. Sick Sinus Syndrome is not your average run-of-the-mill illness and refers to a group of arrhythmia problems.

Much of the time (but not always) arrhythmias are pretty harmless. To understand an arrhythmia, think in terms of musical beat and rhythm. The beat is music is that steady underlying pulse that just keeps on going, never varying and moving the song along. On the other hand, rhythm can be described as the way the words go. It’s easy to see that while beat and rhythm each involve movement, they function in very different ways. That wonderful built in pacemaker, the sinus node, keeps your heart drumming out that steady beat. An arRHYTHMmia (see the word “rhythm” in there?), on the other hand, is not steady and may cause your heart to speed up or slow down. For persons with Sick Sinus Syndrome, the arrhythmia takes the heart someplace else entirely – someplace too fast (tachycardia), too slow (bradycardia), too irregular (and sometimes a combination of all those) – someplace away from that steady drum beat that our bodies so need.

Sick Sinus Syndrome comes in three flavors, all with different causes:
• Sinoatrial block: Slower than normal heart beat caused by electrical signals that slow down when passing through the sinus node.
• Sinus arrest: To go back to the musical analogy, think of a “rest” (a musical beat of silence). In sinus arrest, the sinus node takes a rest or pauses for a moment.

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We value and respect our HERWriters' experiences, but everyone is different. Many of our writers are speaking from personal experience, and what's worked for them may not work for you. Their articles are not a substitute for medical advice, although we hope you can gain knowledge from their insight.

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