RBBB


Also found in: Acronyms.

RBBB

right bundle branch block; see bundle branch block, under block.

RBBB

abbreviation for right bundle branch block.

RBBB

Right bundle-branch block, see there.

bundle branch block

,

BBB

A defect in the electrical conduction system of the heart in which there is failure of conduction down one of the main branches of the bundle of His. On the surface electrocardiogram, the QRS complex is > 0.12 sec. and its shape is altered. Synonym: bundle branch heart block; interventricularheart block

left bundle branch block

Abbreviation: LBBB
A defect in the conduction system of the heart in which electrical conduction down the left bundle branch is delayed. On the 12-lead EKG, it gives the QRS complex a widened QS complex in lead V1 (0.12 sec.).

right bundle branch block

Abbreviation: RBBB
A defect in the conductive system of the heart in which electrical conduction down the right bundle branch is delayed. On the 12-lead EKG, it gives the widened QRS complex an RSR appearance in leads V1 and V2.

right bundle branch block

Abbreviation: RBBB
A defect in the conductive system of the heart in which electrical conduction down the right bundle branch is delayed. On the 12-lead EKG, it gives the widened QRS complex an RSR appearance in leads V1 and V2.
References in periodicals archive ?
The RBBB was defined as a prolonged (IRS duration of [greater than or equal to] 0.
Coronary angiography and echocardiographic findings, Killip classification and in-hospital mortality of the patients with RBBB and the control group were investigated.
Whether the mean differences between RBBB group and control group were significant or not were evaluated using Student's t test or non-parametric Mann-Whitney U test.
Out of 37 patients in the RBBB group, 30 had RBBB at admission and the rest 7 developed RBBB in the course of acute MI.
In this study, we showed that RBBB in the course of acute anterior MI has worse clinical and angiographic characteristics when compared to patients with no intraventricular defect.
Wong et al (11) demonstrated that RBBB in the setting of acute anterior MI was an independent 30-day mortality predictor.
In a recently published article (14), RBBB was found to be only related to increased risk of sudden cardiac death/resuscitated cardiac arrest but left bundle branch block was associated with increased risk for all-cause death, cardiovascular death, and sudden cardiac death/resuscitated cardiac arrest.
In the article by Di Chiara (15), it was stated that RBBB should be 'blindly' considered as a consequence of acute anterior MI.
Killip class was higher and heart failure was more common in patients with RBBB as a result of more proximal LAD occlusion and more jeopardized myocardial tissue.
However, even coronary intervention was performed at approximately a mean of 4 hours after chest pain, RBBB was found to be still associated with a higher mortality in patients with acute anterior MI (6).
It is a retrospective study which does not have enough power to show increased mortality in patients with RBBB as shown before (5).
The culprit lesion inpatients with RBBB and acute anterior MI is more commonly a LAD proximal lesion and jeopardized myocardial tissue is larger in patients with RBBB.