Right bundle branch block causes

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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]; Ayokunle Olubaniyi, M.B,B.S [5]

Overview

Life Threatening Causes

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

• Citalopram toxicity
• Cocaine abuse
• Heart failure
• Hyperkalemia
• Myocardial infarction
• Pulmonary embolism

Common Causes

• Cocaine abuse
• COPD
• Cor pulmonale
• Coronary heart disease
• Heart failure
• Hyperkalemia
• Hypertension
• Myocarditis
• Pulmonary embolism

Causes by Organ System

Cardiovascular	Atrial septal defect, cardiomyopathy, coronary artery disease, Ebstein anomaly, heart failure, hypertension, left ventricular noncompaction, Lev's disease, myocardial infarction, myocarditis, valvular heart disease
Chemical / poisoning	No underlying causes
Dermatologic	No underlying causes
Drug Side Effect	Naloxone, oxycodone, propafenone, ritonavir
Ear Nose Throat	No underlying causes
Endocrine	No underlying causes
Environmental	No underlying causes
Gastroenterologic	No underlying causes
Genetic	Ebstein anomaly, Fabry disease, familial, Kearns-Sayre syndrome, muscular dystrophy, myotonic dystrophy
Hematologic	No underlying causes
Iatrogenic	Cardiac catheterization, cardiac transplantation, Post cardiac surgery, pulmonary artery catheterization, Septal ablation, thrombolytic therapy, transjugular intrahepatic portosystemic shunt
Infectious Disease	Chagas disease, HIV, infective endocarditis, Lyme disease
Musculoskeletal / Ortho	Kearns-Sayre syndrome, muscular dystrophy, myotonic dystrophy
Neurologic	Kearns-Sayre syndrome
Nutritional / Metabolic	Fabry disease
Obstetric/Gynecologic	No underlying causes
Oncologic	No underlying causes
Opthalmologic	No underlying causes
Overdose / Toxicity	Citalopram toxicity, cocaine abuse
Psychiatric	No underlying causes
Pulmonary	COPD, cor pulmonale , pulmonary embolism, pulmonary hypertension, pulmonic stenosis, sarcoidosis
Renal / Electrolyte	Hyperkalemia
Rheum / Immune / Allergy	Polymyositis, sarcoidosis, systemic lupus erythematosus
Sexual	No underlying causes
Trauma	Trauma
Urologic	No underlying causes
Dental	No underlying causes
Miscellaneous	No underlying causes

Causes in Alphabetical Order

• Atrial septal defect
• Cardiac catheterization
• Cardiac transplantation
• Cardiomyopathy
• Chagas disease
• Citalopram toxicity
• Cocaine abuse
• COPD
• Cor pulmonale
• Coronary artery disease
• Ebstein anomaly
• Fabry disease
• Familial
• Heart failure
• HIV
• Hyperkalemia
• Hypertension
• Infective endocarditis
• Left ventricular noncompaction
• Kearns-Sayre Syndrome
• Lev's disease

• Lyme disease
• Muscular dystrophy
• Myocardial infarction
• Myocarditis
• Myotonic dystrophy
• Naloxone
• Oxycodone
• Polymyositis
• Post cardiac surgery
• Propafenone
• Pulmonary artery catheterization
• Pulmonary embolism
• Pulmonary hypertension
• Pulmonic stenosis
• Ritonavir
• Sarcoidosis
• Septal ablation
• Systemic lupus erythematosus
• Thrombolytic therapy
• Transjugular intrahepatic portosystemic shunt
• Trauma
• Valvular heart disease

References

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