Nikolas
Created page with "'''Sick sinus syndrome''' (SSS) or '''sinus node dysfunction''' (SND) refers to any condition where the SA node is dysfunctional. This causes intermittent sinus bradycardia, sinus pauses (pauses <3 seconds), sinus arrest (pauses >3 seconds), tachycardia-bradycardia syndrome, chronotropic incompetence, or SA block. Patients present with intermittent complaints of fatigue, dizziness, palpitations, syncope, etc. SSS is..."
