Third degree AV block classification: Difference between revisions
Aditya Ganti (talk | contribs) |
|||
| Line 1: | Line 1: | ||
__NOTOC__ | __NOTOC__ | ||
{{Third degree AV block}} | {{Third degree AV block}} | ||
{{CMG}}; {{AE}} {{Soroush}} {{CZ}} | {{CMG}}; {{AE}} {{Soroush}} {{CZ}} [[User:Qasim Khurshid|Qasim Khurshid, M.B.B.S [4]]] | ||
==Overview== | ==Overview== | ||
There is no established system for the classification of third degree AV block. But AV dissociation can be further classified into two subtypes as AV dissociation by default and AV dissociation by usurpation. | There is no established system for the classification of third degree AV block. But AV dissociation can be further classified into two subtypes as [[AV dissociation]] by default and AV dissociation by usurpation. | ||
==Classification== | ==Classification== | ||
| Line 20: | Line 20: | ||
* Regular P-P interval | * Regular P-P interval | ||
* Regular R-R interval | * Regular [[R-R interval]] | ||
* Lack of an apparent relationship between the P waves and QRS complexes | * Lack of an apparent relationship between the P waves and [[QRS complexes]] | ||
* More P waves are present than QRS complexes | * More [[P waves|P wave]]<nowiki/>s are present than [[QRS complexes]] | ||
==References== | ==References== | ||
Revision as of 14:30, 18 June 2020
|
Third degree AV block Microchapters | |
|
Diagnosis | |
|---|---|
|
Treatment | |
|
Case Studies | |
|
Third degree AV block classification On the Web | |
|
American Roentgen Ray Society Images of Third degree AV block classification | |
|
Risk calculators and risk factors for Third degree AV block classification | |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Soroush Seifirad, M.D.[2] Cafer Zorkun, M.D., Ph.D. [3] Qasim Khurshid, M.B.B.S [4]
Overview
There is no established system for the classification of third degree AV block. But AV dissociation can be further classified into two subtypes as AV dissociation by default and AV dissociation by usurpation.
Classification
There is no established system for the classification of third degree AV block. But AV dissociation can be further classified into two subtypes as follows:
AV Dissociation by Default
- In this rhythm there is an independent ventricular pacemaker response to slowing of the dominant atrial pacemaker.
AV Dissociation by Usurpation
- In this rhythm there is acceleration of a latent pacemaker that takes control of cardiac conduction by exceeding the intrinsic atrial rate.
Based on electrocardiogram third degree block can be classified as[1]
- Regular P-P interval
- Regular R-R interval
- Lack of an apparent relationship between the P waves and QRS complexes
- More P waves are present than QRS complexes
References
- ↑ Rosen, Kenneth M. (1973). "Chronic Heart Block in Adults". Archives of Internal Medicine. 131 (5): 663. doi:10.1001/archinte.1973.00320110047006. ISSN 0003-9926.