Right bundle branch block

Right bundle branch block

Infobox_Disease
Name = PAGENAME


Caption =
DiseasesDB = 11620
ICD10 = ICD10|I|45|1|i|30
ICD9 =
ICDO =
OMIM =
MedlinePlus =
eMedicineSubj = ped
eMedicineTopic = 2500
MeshID =

A right bundle branch block (RBBB) is a defect in the heart's electrical conduction system.

During a right bundle branch block, the right ventricle is not directly activated by impulses travelling through the right bundle branch. The left ventricle however, is still normally activated by the left bundle branch and these impulses travel through the left ventricle's myocardium to the right ventricle and activate the right ventricle.

ECG diagnosis

The criteria to diagnose a right bundle branch block on the electrocardiogram:

* The heart rhythm must be supraventricular in origin
* The QRS duration must be = or > 120 ms
* There should be a terminal R wave in lead V1 (e.g., R, rR', rsR', rSR' or qR)
* There should be a slurred S wave in leads I and V6.

The T wave should be deflected opposite the terminal deflection of the QRS complex. This is known as appropriate T wave discordance with bundle branch block. A concordant T wave may suggest ischemia or myocardial infarction.

Prevalence of RBBB increases with age.

ee also

* Bundle branch block
* Left bundle branch block


Wikimedia Foundation. 2010.

Игры ⚽ Нужно сделать НИР?

Look at other dictionaries:

  • right bundle branch block — (RBBB) see bundle branch b …   Medical dictionary

  • Bundle branch block — ICDO = OMIM = MedlinePlus = eMedicineSubj = ped eMedicineTopic = 2501 eMedicine mult = eMedicine2|ped|2500 MeshName = Bundle Branch+Block MeshNumber = C14.280.067.558.323 A bundle branch block refers to a defect of the heart s electrical… …   Wikipedia

  • bundle branch block — a defect in the specialized conducting tissue of the heart (see arrhythmia) that is identified on an electrocardiogram. Right bundle branch block is a normal variant in children and young adults, but may reflect chronic lung disease or ischaemic… …   The new mediacal dictionary

  • bundle branch block — n heart block due to a lesion in one of the bundle branches * * * (BBB) interruption of conduction in one of the main bundle branches, left or right; the sequence of ventricular depolarization is altered since the impulse reaches one ventricle… …   Medical dictionary

  • Left bundle branch block — Infobox Disease Name = PAGENAME Caption = ECG characteristics of a typical LBBB showing wide QRS complexes with abnormal morphology in leads V1 and V6. DiseasesDB = 7352 ICD10 = ICD10|I|44|7|i|30 ICD9 = ICDO = OMIM = MedlinePlus = eMedicineSubj …   Wikipedia

  • bundle branch block — a defect in the specialized conducting tissue of the heart (see arrhythmia) that is recognized as an electrocardiographic abnormality. Left or right bundle branch blocks, affecting the respective ventricles, may be seen. Occasionally both left… …   Medical dictionary

  • block — 1. To obstruct; to arrest passage through. 2. A condition in which the passage of an electrical impulse is arrested, wholly or in part, temporarily or permanently. 3. SYN: atrioventricular b.. [Fr. bloquer] alveolocapillary b. the presence of… …   Medical dictionary

  • Arrhythmogenic right ventricular dysplasia — Classification and external resources Photomicrograph of an ARVC heart. ICD 10 I …   Wikipedia

  • Heart block — Classification and external resources ICD 10 I44 I45 ICD 9 …   Wikipedia

  • Trifascicular block — DiseaseDisorder infobox Name = Trifascicular heart block ICD10 = ICD10|I|45|3|i|30 ICD9 = ICD9|426.54 Trifascicular block is a problem with the electrical conduction of the heart. It is diagnosed on an electrocardiogram (ECG/EKG) and has three… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”