Human genes for sick sinus syndrome
Sick sinus syndrome [DOID:13884]
Sick sinus syndrome, also called sinus node dysfunction, is 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 why is unknown.
Synonyms: sick sinus syndrome, DOID:13884, sick sinus disease, sick sinus disorder