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(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...") |
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