Heart Disease of the Sinus Node in Cats

Sick Sinus Syndrome in Cats
 
The sinoatrial node (SA Node, or SAN), also called the sinus node, is the initiator of electrical impulses within the heart, triggering the heart's contractions by firing off electrical surges. One of the disorders that can affect the heart’s electrical impulse formation within the sinus node is called sick sinus syndrome (SSS).
 
This disorder complicates conduction of the electrical impulse out of the sinus node and the specialized conduction system of the heart. Secondary pacemakers, such as the muscle fibers of the sinus node, will als ...read more

  • Cat Health Conditions

Source: 

Visit PetMD for more information about this condition.