AVRT antidromic

Atrioventricular Reentrant Tachycardia is an arrhythmia that is regular and fast (150-250 bpm). There are two variations: orthodromic and antidromic. The antidromic rhythm features a re-entry circuit where the impulse travels from the atria to the ventricles via an accessory bundle, then back through the AV node to the atria again. This results in a wide QRS followed by a retrograde P wave. The orthodromic variant is the opposite direction.

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