Structural Causes of Right Bundle Branch Block—Time for a Closer Look?
Identifiers and Pagination:Year: 2010
First Page: 105
Last Page: 109
Publisher Id: TOCMJ-4-105
Article History:Received Date: 25/1/2010
Revision Received Date: 8/2/2010
Acceptance Date: 12/2/2010
Electronic publication date: 9/3/2010
Collection year: 2010
open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.
Right bundle branch block is an electrocardiographic phenomenon with specific criteria.
Currently, two specific forms of right bundle branch block are acknowledged, a proximal and a distal variant. A vast array of pathologies can cause proximal, distal or even combined forms of right bundle branch block.
In this study it is suggested that a third type of right bundle branch block exist: one caused by a subaortic muscular tendon in the left ventricle, leading to an increased velocity of conduction in the left ventricle, with a resultant “relative” right bundle branch block. It is concluded that it is necessary (and time) to take a closer look at endoventricular structures in the assessment of structural causes of right bundle branch block.