Sick Sinus Syndrome
Sick sinus syndrome (SSS), also called sinus node dysfunction (SND), is an umbrella term for a group of abnormal heart rhythms (arrhythmias) presumably caused by a malfunction of the sinus node, the heart's primary pacemaker. Bradycardia-tachycardia syndrome is a variant of sick sinus syndrome in which slow arrhythmias and fast arrhythmias alternate. In recent years, the syndrome has become increasingly prevalent in dogs. The reason is unknown.
Read more about Sick Sinus Syndrome: Causes, Symptoms, Diagnosis, Treatment
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