What Is Sick Sinus Syndrome?
3. Sinoatrial Block
There are four different types of sick sinus syndrome that we know of, one of which is sinoatrial block. Usually, the pulse is generated in the sinus node and then travels to the heart muscle, causing the muscle to contract. In instances of sinoatrial block, however, the pulse can be blocked or delayed on its way to the muscle.
This will mean the muscles do not contract, or that the contraction is delayed, and this will result in a heart rate that is slower than usual. Sinoatrial blocks themselves fall into three separate categories according to the length of the delays.
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