Right bundle branch block causes: Difference between revisions

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==Causes==
==Causes==
===Most Common Causes===
==Overview==
 
===Life Threatening Causes===
Life-threatening causes include conditions which may result in death or permanent disability within 24 hours if left untreated.
 
===Common Causes===
* [[Cor pulmonale]] - chronically increased right ventricular pressure and/or [[right ventricular hypertrophy]]
* [[Cor pulmonale]] - chronically increased right ventricular pressure and/or [[right ventricular hypertrophy]]
* [[Coronary heart disease]]
* [[Coronary heart disease]]
* [[Myocardial infarction]]
* [[Myocardial infarction]]
* [[Myocarditis]]
* [[Myocarditis]]
* Surgery for correction of [[congenital heart disease]] is the most common cause of RBBB among children in the United States. This includes surgery for repair of an isolated VSD or another [[congenital heart disease]] that includes a [[VSD]] (eg, double-chambered right ventricle, AV canal defect, or [[tetralogy of Fallot]]). The incidence of RBBB varies and ranges from 25-81% after repair of a VSD to 60-100% after repair of tetralogy of Fallot.  The risk of RBBB after surgery varies depending upon the proximity of the VSD to the [[His-Purkinje system]].
* [[Cardiac surgery|Post cardiac surgery]]  
* [[Valvular heart disease]]
* [[Valvular heart disease]]


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|-bgcolor="LightSteelBlue"
|-bgcolor="LightSteelBlue"
| '''Infectious Disease'''
| '''Infectious Disease'''
|bgcolor="Beige"| Prenatal exposure to [[HIV]]
|bgcolor="Beige"| [[HIV]]
|-
|-
|-bgcolor="LightSteelBlue"
|-bgcolor="LightSteelBlue"
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===Causes in Alphabetical Order===
===Causes in Alphabetical Order===
{{col-begin|width=80%}}
{{col-break|width=33%}}
* [[Pulmonary Embolism|Acute pulmonary embolism]] - acute rise in right ventricular pressures
* [[Pulmonary Embolism|Acute pulmonary embolism]] - acute rise in right ventricular pressures
* [[Atrial septal defect]]
* [[Atrial septal defect]]
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* [[Myocarditis]]
* [[Myocarditis]]
* [[Polymyositis]]
* [[Polymyositis]]
* Prenatal exposure to [[HIV]] type 1 may cause right anterior [[hemiblock]]
* [[HIV]]
* Septal reduction therapy with ethanol ablation in patients with [[hypertrophic cardiomyopathy]] and left ventricular outflow tract obstruction
* [[Cardiac surgery|Post cardiac surgery]]
* Surgery for correction of [[congenital heart disease]] is the most common cause of RBBB among children in the United States. This includes surgery for repair of an isolated VSD or another [[congenital heart disease]] that includes a [[VSD]] (eg, double-chambered right ventricle, AV canal defect, or [[tetralogy of Fallot]]). The incidence of RBBB varies and ranges from 25-81% after repair of a VSD to 60-100% after repair of tetralogy of Fallot.  The risk of RBBB after surgery varies depending upon the proximity of the VSD to the [[His-Purkinje system]].
* [[Valvular heart disease]]
* [[Valvular heart disease]]
 
* [[Hyperkalemia]]
===Transient RBBB===
* [[Cardiac catheterization]]
* [[Hyperkalemia]] - causes depression of the His-Purkinje conducting system
* [[Thrombolytic therapy]]
* Mechanical damage during right heart [[catheterization]] - observed in 5% of the patients. Resolves when the catheter is removed.  Associated [[LBBB]] can cause [[complete heart block]] in such situations leading to [[cardiac arrest]].  A temporary pacemaker is inserted during the procedure in patients with LBBB to prevent sudden cardiac arrest.
* Occasionally following thrombolytic therapy in patients with [[myocardial infarction]] and new RBBB
* [[Pulmonary embolism]]
* [[Pulmonary embolism]]
* [[Premature atrial contraction]]s or [[supraventricular tachycardia]] may cause a transient form of right bundle branch block. This occurs when a premature impulse is conducted from the AV node to the His bundle while the right bundle branch remains in its refractory period, but the left bundle is not. As a result, conduction down the right bundle branch is delayed or blocked.
* [[supraventricular tachycardia]]  
* [[Trauma]]
* [[Trauma]]
{{col-end}}
==References==
{{Reflist|2}}
[[Category:Crowdiagnosis]]
[[Category:Cardiology]]
[[Category:Up-To-Date]]
[[Category:Up-To-Date cardiology]]
[[Category:Arrhythmia]]
[[Category:Electrophysiology]]
[[Category:Disease]]


===Pseudo RBBB Pattern===
{{WikiDoc Help Menu}}
Some patients with [[Brugada syndrome]] and [[arrhythmogenic right ventricular cardiomyopathy]] (primary ventricular arrhythmia syndromes) have ECG patterns similar to right bundle branch block but such patterns should not be considered true RBBB.
{{WikiDoc Sources}}


==References==
==References==

Revision as of 19:11, 22 August 2013

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Cafer Zorkun, M.D., Ph.D. [2]; Raviteja Guddeti, M.B.B.S. [3]; Aarti Narayan, M.B.B.S [4]

Causes

Overview

Life Threatening Causes

Life-threatening causes include conditions which may result in death or permanent disability within 24 hours if left untreated.

Common Causes

Causes by Organ System

Cardiovascular Atrial septal defect, Cardiomyopathy, Cor pulmonale, Coronary heart disease, Hypertension, Lev's disease, Lenegre's disease, Myocardial infarction, Myocarditis, Septal reduction therapy with ethanol ablation in patients with hypertrophic cardiomyopathy and left ventricular outflow tract obstruction, Surgery for correction of congenital heart disease, Valvular heart disease
Chemical / poisoning No underlying causes
Dermatologic No underlying causes
Drug Side Effect No underlying causes
Ear Nose Throat No underlying causes
Endocrine No underlying causes
Environmental No underlying causes
Gastroenterologic No underlying causes
Genetic Familial
Hematologic No underlying causes
Iatrogenic No underlying causes
Infectious Disease HIV
Musculoskeletal / Ortho Polymyositis
Neurologic No underlying causes
Nutritional / Metabolic No underlying causes
Obstetric/Gynecologic No underlying causes
Oncologic No underlying causes
Opthalmologic No underlying causes
Overdose / Toxicity No underlying causes
Psychiatric No underlying causes
Pulmonary Acute pulmonary embolism, COPD
Renal / Electrolyte No underlying causes
Rheum / Immune / Allergy No underlying causes
Sexual No underlying causes
Trauma Blunt trauma
Urologic No underlying causes
Dental No underlying causes
Miscellaneous No underlying causes

Causes in Alphabetical Order

References


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References

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