Atrioventricular block classification: Difference between revisions
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==Overview== | ==Overview== | ||
[[Atrioventricular]] ([[AV]]) [[block]] is a medical condition wherein there is a disturbance in the [[conduction]] of an [[electro-cardiac]] impulse traveling from the [[atria]] to the [[ventricle]], as a result of an [[anatomic]] or [[functional]] aberration in the [[conduction system]]. It is classified into three types, which are the [[first degree AV block]], [[second-degree AV block]], and [[third-degree AV block]]/[[complete AV block]]. | |||
==Classification== | ==Classification== | ||
Revision as of 23:48, 27 July 2022
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Edzel Lorraine Co, DMD, MD[2]
Overview
Atrioventricular (AV) block is a medical condition wherein there is a disturbance in the conduction of an electro-cardiac impulse traveling from the atria to the ventricle, as a result of an anatomic or functional aberration in the conduction system. It is classified into three types, which are the first degree AV block, second-degree AV block, and third-degree AV block/complete AV block.
Classification
- First degree AV block
- Prolongation of PR interval
- Second degree AV block also known as Mobitz I and Mobitz II
- Type I AV Block (Wenckebach)
- Progressive prolongation of the PR interval before dropped beat.
- Usually block is in the AV node
- Type II AV Block
- No change in PR interval before dropped beat
- Usually infranodal
- Type I AV Block (Wenckebach)
- Third degree AV block also known as complete heart block
- No relationship between atrial and ventricular activity.