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Paroxysmal AV Block Based on Cause

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Overview[edit | edit source]

Based on the cause, paroxysmal AV block maybe classified into Intrinsic paroxysmal AV Block, Extrinsic Vagal paroxysmal AV block and Extrinsic Idiopathic paroxysmal AV Block.

Classification[edit | edit source]

  • Paroxysmal AV Block may be classified according to the cause into three types :
  1. Intrinsic AV Block (I-AVB)
  2. Extrinsic Vagal AV Block (EV- AVB)
  3. Extrinsic Idiopathic AV Block (EI- AVB) "Syncope and paroxysmal atrioventricular block - Aste - 2017 - Journal of Arrhythmia - Wiley Online Library".


 
 
 
 
 
 
 
Paroxysmal AV Block classification based on cause
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Intrinsic AV Block (I-AVB): Due to innate structural/ conduction defect
 
 
Extrinsic Vagal AV Block (EV- AVB): Due to vagal surge/reflex
 
 
 
Extrinsic Idiopathic AV Block (EI- AVB) : Due to innately low adenosine plasma levels
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Tachycardia Dependent AV Block (TD- AVB)
 
 
Bradcardia/Pause Dependent AV Block (BD- AVB/PD-AVB)
 
 
 
 
 
 

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References[edit | edit source]

  1. ↑ Aste M, Brignole M (December 2017). "Syncope and paroxysmal atrioventricular block". J Arrhythm. 33 (6): 562–567. doi:10.1016/j.joa.2017.03.008. PMID 29255501.
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