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 cause...

Complete right bundle branch block manifests with a rSR' configuration in right orientated leads and a duration of 0.12 sec or longer. Incomplete right bundle branch block is perceived as this classic rSr' configuration and a duration of less than 0.12 sec. This presentation reflects the early development of right bundle branch block which first manifests with a hitherto undescribed sign, namel...

ELECTROCARDIOGRAPHY is a subject now sufficiently old that it should contain more science than art, partiQularly in view of the sophisticated methods currently available to study the electrical activity of the heart. That many quaint terms have persisted in electrocardiographic nomenclature may be more attributable to their charming lilt than their scientific accuracy. We have long suspected th...

background: several echocardiographic markers have been introduced to assess the left ventricular (lv) mechanical dyssynchrony. we studied dyssynchrony markers and the latest lv activation site in heart failure patients with and without left bundle branch block (lbbb). methods: conventional echocardiography and tissue velocity imaging were performed for 78 patients (lv ejection fraction ≤ 35%),...

Figure 1. (Panel A) 12-lead ECG depicting high degree right bundle branch block (see text for details). (Panel B) 12-lead ECG depicting the “Chiale” maneuver Right apical ventricular pacing during with timed A-V intervals in the fused QRS complexes. Black arrows show classic type 1 Brugada ECG pattern. Upon cessation of pacing, high-degree right bundle branch block reappears (white arrows). ECG...

We have confirmed a supraventricular origin of bidirectional tachycardia with simultaneous standard electrocardiograms and a His bundle electrogram. The patient had sinus rhythm, variable trifascicular block and atrioventricular block below the His bundle. Ventricular excitation varied among three patterns which included right bundle branch block with right axis deviation (RBBB-RAD), right bund...

Electrocardiograms and surgical data from 12 patients with complete atrioventricular canal defects and 24 patients with ostium primum defects were evaluated before and after open heart surgery in order to document the incidence of postoperative right bundle branch block. The use and precise location of septal sutures utilized for repair were specifically noted in order to assess their possible ...

It has been demonstrated repeatedly that not much importance c attached to the prognostic significance of bundle branch block. Right I branch block has been considered to show a more favorable proj than left bundle branch block. However, the presence of right I branch block, either the typical or atypical form, alerts the physici the basic cardiac disease, particularly disease of the coronary c...