{"version":"1.0","type":"link","title":"Sinus node dysfunction - Newikis","description":"Sinus node dysfunction (SND), also known as sick sinus syndrome (SSS), is a group of abnormal heart rhythms (arrhythmias) usually caused by a malfunction of the sinus node, the heart's primary pacemaker. Tachycardia-bradycardia syndrome is a variant of sick sinus syndrome in which the arrhythmia…","provider_name":"Newikis","provider_url":"https://newikis.com","cache_age":86400,"thumbnail_url":"https://thumb.wikimedia.org/wikipedia/commons/thumb/a/a9/ECG_Sinus_Pause.jpg/1280px-ECG_Sinus_Pause.jpg","thumbnail_width":1280,"thumbnail_height":873}