What Is Sick Sinus Syndrome?
4. Sinoatrial Arrest
Sinoatrial arrest is also sometimes referred to as sinus arrest. Instead of signals from the sinus node being blocked or delayed on their way to the hearts muscle, they are not generated in the first place. This means that the hearts muscles will not contract. The heart does have more than one pacemaker and, if the sinoatrial node is not emitting signals, then another pacemaker will help ensure the heart continues to pump.
When this happens, it is known as an escape rhythm. If there are no pacemakers emitting signals then a cardiac arrest will occur.
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