RBBB


Also found in: Acronyms.

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 ratio of patients with tachycardia, S[sub]1Q[sub]3T[sub]3, RBBB, and TWI in the high-risk group was higher than that in the low-risk group.
ECG Changes in COPD Patients ECG Changes Criteria Number % (n = 50) P-pulmonale Absent 16 32.0 Present 34 68.0 Right axis deviation Absent 19 38.0 of QRS Complex Present 31 62.0 (Beyond +90 degrees) Right Ventricular Absent 40 80.0 Hypertrophy (RVH) Present 10 20.0 Right bundle branch Absent 34 68.0 block (RBBB) Present 16 32.0 Low voltage of QRS Absent 24 48.0 complex Present 26 52.0 Polymorphic p-wave Absent 44 88.0 Present 6 12.0 Table 2.
AAMI classes MITDB/SVDB classes Total Nonectopic beat (N) NOR, LBBB, RBBB, AE, NE 30929 Supraventricular APC, AP, APB, NP, SP 1538 ectopic beat (S) Ventricular ectopic PVC, VE, VF 2035 beat (V) Fusion beat (F) F 14 Unknown beat (Q) UN, FPN, PACE, | 1329 Table 2: A summary of performance analysis of the proposed method on each arrhythmia class in the "class-oriented" scheme.
It is not clear if RBBB is really a primarily manifestation or if it is secondary to myocardial damage extending to conduction system.
(%) Physical Exam Finding Murmur 11(3.1) ECG Findings Axis NL 380 (97.9) Right Deviation 4 (1) Left Deviation 4(1) Left Ventricular hypertrophy 12 (3.1) Atrial hypertrophy 3(8) Heart block block level 1 35 (11.6) Branch block RBBB 38 (9.7) Sinus Rhythm Bradycardia 124(32) Tachycardia 5(13) Arrhythmia PVC 2 (0.5) WPW 1(0.3) T change T invert 6(1.5) Jpoint elevation 17 (4.4) Table 3.
* Irregular, wide complex tachycardias include PMVT, AF or AFL with RBBB or LBBB and pre-excited AF.
EKG may show tachycardia and right heart strain pattern (peaked P wave, RBBB, and right axis deviation).
(12) EKG findings include partial or complete right bundle branch block (RBBB) and ST segment elevation in right precordial leads V1 to V3.
Since this study is to evaluate the performance of a binary classifier with a reject option, we followed the A AMI recommended practice [19] to form two heartbeat classes: (i) the positive class representing the ventricular ectopic beats (V); (ii) the negative class representing the normal beats (N), including Normal beats, Left Bundle Branch Block beats (LBBB) and Right Bundle Branch Block beats (RBBB).
He retired in 1992 and during his retirement worked with a public relations firm and RBBB Circus for several years.
The AAMI convention is used to combine the beats into five classes of interest [7]: normal beat, left bundle branch block (LBBB), right bundle branch block (RBBB), and atrial escape and nodal junction escape beats belong to class N category; class V contains premature ventricular contraction (PVC) and ventricular escape beats, class S contains atrial premature (AP), aberrated premature (aAP), nodal junction premature (NP), and supraventricular premature (SP) beats, class F contains only fusion of ventricular and normal (f VN) beats, and class Q which is known as unknown beat contains paced beat (P), fusion of paced and normal (fPN) beats, and unclassified beats.
The pattern seen on the ECG is persistent ST elevations in the electrocardiographic leadsV1-V3 with a right bundle branch block (RBBB) appearance with or without the terminal S waves in the lateral leads that are associated with a typical RBBB.