Sick Sinus Syndrome
Definition It is the dysfunction of SA node characterised by attacks of sinus bradycardia, sinus arrest or junctional rhythm which may lead to dizziness or syncope, followed by episodes of…
WPW Syndrome
Definition It is a syndrome in which there is an accessory pathway that bypasses the AV node and connects the atrium and ventricle (by bundles of Kent). May be associated…
Sinus Bradycardia
Definition When heart rate is less than 60/min in sinus rhythm. Causes of Sinus Bradycardia 1. Physiological (due to increased vagal tone)— –– Athlete. –– Sleep. –– Occasionally, healthy elderly.…