Right Bundle Branch Block Causes & Reasons

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Possible Causes

Chronic Obstructive Pulmonary Disease

[…] deviation 110 without right bundle branch block; or some combination of these. [merckmanuals.com]

Findings of right ventricular hypertrophy include an R or R ′ wave as tall as or taller than the S wave in lead V 1 ; an R wave smaller than the S wave in lead V 6 ; right-axis [merckmanuals.com]

Findings of right ventricular hypertrophy include an R or R′ wave as tall as or taller than the S wave in lead V1; an R wave smaller than the S wave in lead V6; right-axis [merckmanuals.com]

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Cor Pulmonale

V leads; (3) ST depressions in leads II, III, and aV F ; and (4) transitory right bundle-branch block. [ahajournals.org]

[…] axis deviation Right bundle branch block R:S ratio 1 in V1 TWI in V1-3 in acute right heart strain S1 Q3 T3 in acute right heart strain Large P wave in II, III, aVF Arrhythmia [wikem.org]

[…] ventricular hypertrophy; QRS duration is typically normal, the hypertrophy not being sufficient to cause a prolongation of the QRS; the onset of a complete right bundle branch [cardiocases.com]

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Cardiomyopathy

TAD terminal activation duration, IRBBB incomplete right bundle branch block, CRBBB complete right bundle branch block. [hrcak.srce.hr]

ECG repolarization abnormalities Minor Inverted T waves in right precordial leads (V 2 and V 3 ) in people 12 years of age and in absence of right bundle branch block. 4. [ncbi.nlm.nih.gov]

bundle-branch block and right precordial ST-segment elevation accompanied by polymorphic ventricular tachycardia also have been reported in a small subpopulation of ARVC/ [web.archive.org]

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Acute Myocardial Infarction

BACKGROUND New-onset extreme right axis deviation and right bundle branch block (RBBB) are rare during acute myocardial infarction (AMI), and has only been reported in several [ncbi.nlm.nih.gov]

Right bundle branch block in anterior MI is an independent marker of poor prognosis; this is due to the extensive myocardial damage involved rather than the conduction disorder [lifeinthefastlane.com]

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Atrial Septal Defect

The impact of incomplete right bundle branch block (IRBBB) and ASD diameter ( 5 and KEYWORDS: Crochetage on R wave; Inferior leads; Pediatric; Secundum atrial septal defect [ncbi.nlm.nih.gov]

atrial fibrillation or right bundle branch block. [orpha.net]

EMAIL PRINT SAVE EMAIL SAVE An atrial septal defect should show a right bundle branch block, or RBBB ― sometimes incomplete ― on ECG. [healio.com]

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Coronary Atherosclerosis

Coronary artery disease (CAD) exhibits the rules of the multifactorial hereditary. Notwithstanding, the role of genetic factors in the prevalence of CAD is estimated very high. SIRT1 plays an athero-protective role and alterations in its expression have some important consequence in the metabolism, cholesterol, and[…] [ncbi.nlm.nih.gov]

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Posterior Myocardial Infarction

Also, both patients had complete right bundle-branch block (RBBB) [old in patient 1, new in patient 2], the pattern of which was altered due to the associated PMI. [ncbi.nlm.nih.gov]

Discussion Ventricular repolarization in right bundle branch block Right bundle branch block is an intra-ventricular conduction delay or block at the right bundle branch and [academic.oup.com]

We present here a patient with the unusual combination of a newly developed right bundle branch block (RBBB) and an acute posterior myocardial infarction (MI). [ncbi.nlm.nih.gov]

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Brugada Syndrome

[…] of adult subjects with right bundle branch block and ST elevation, Circulation, 1995, vol. 93 pg. 334 [31] Incidence and clinical significance of right bundle branch block [doi.org]

bundle branch block for comparison. [ncbi.nlm.nih.gov]

Brugada syndrome with complete right bundle-branch block. Implantable cardioverter defibrillator (ICD) implantation was performed. [ncbi.nlm.nih.gov]

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Ostium Primum Atrial Septal Defect

When a person is suspected of having an ASD based on the findings of an incomplete right bundle branch block with a rSr' or rSR', the frontal plane QRS should be examined. [en.wikipedia.org]

Right ventricle hypertrophy markers or incomplete right bundle branch block may be present. [symptoma.com]

When you suspect a patient has an ASD based on the findings of an incomplete Right Bundle Branch Block with a rSr' or rSR' the next thing you should do is examine the frontal [ipfs.io]

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Right Ventricular Hypertrophy

In contrast, when an incomplete right bundle branch block exists, the rSR' pattern is a relatively sensitive but nonspecific predictor of RVH. [ncbi.nlm.nih.gov]

[…] often confused with partial right bundle branch block (PRBBB). [ncbi.nlm.nih.gov]

bundle branch block Wolff-Parkinson-White Type A Lead misplacement (if V1 is placed too high) Isolated posterior wall hypertrophy (occurs in Duchenne ’ s muscular dystrophy [healio.com]

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Heart Block

block, left bundle branch block, right bundle branch block, left anterior hemi-block or left posterior hemi-block) on electrocardiograms. [ncbi.nlm.nih.gov]

[…] second-degree block, third-degree block, left bundle branch block, right bundle branch block, left anterior hemi-block or left posterior hemi-block). [ncbi.nlm.nih.gov]

If the block is located in the right bundle branch, it is called right bundle branch block. [texasheart.org]

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Multifocal Atrial Tachycardia

bundle branch block. [ncbi.nlm.nih.gov]

The only differences between these two groups were incidence of cor pulmonale, and right axis deviation, right bundle branch block, pulmonale P in electrocardiogram. [ncbi.nlm.nih.gov]

MULTIFOCAL ATRIAL TACHYCARDIA; RIGHT BUNDLE BRANCH BLOCK. ( 26986865 ) Glancy D.L....Chen A. 2016 5 Multifocal atrial tachycardia caused by risperidone. ( 26599751 ) Oner [malacards.org]

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Anterior Myocardial Infarction

The recurrent myocardial infarction indicated right bundle branch block and first-degree atrioventricular block, making a clear diagnosis of complicated and interesting ECG [ncbi.nlm.nih.gov]

A concept generally accepted in clinical electrocardiography is the assumption that a right bundle branch block (RBBB) does not alter significantly the initial portion of [ncbi.nlm.nih.gov]

Patients with right bundle-branch block (RBBB) during an anterior ST-segment elevation acute myocardial infarction (AMI) are known to have a high risk for mortality. 1 In [circ.ahajournals.org]

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Acute Myocarditis

It has also been described in a work the report of sequences of alternatively normal and Wenckebach beats with alternate and progressive right bundle branch block interpreted [ncbi.nlm.nih.gov]

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Bidirectional Tachycardia

[…] in this case the bidirectional morphology of tachycardia was caused by alternating right and left bundle branch block-type patterns. [journals.sagepub.com]

This hypothesis is consistent with the fact that BVT with right bundle branch block morphology is more frequently seen than BVT with left or alternating bundle branch block [symptoma.com]

They are both in a right bundle branch block pattern since they are upright in lead V1. [healio.com]

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Lenegre Disease

Journal of the American College of Cardiology. 2001 Mar 1; [PubMed PMID: 11693753] [3] Patil AR, Risk of right bundle-branch block and complete heart block during pulmonary [statpearls.com]

Pseudo right bundle branch block Brugada syndrome Arrhythmogenic right ventricular cardiomyopathy [dimasyusuf.com]

bundle branch may be initially and mostly involved,followed by the left anterior fascicle and the highly or complete atrioventricular block found in severe cases.Patients [en.cnki.com.cn]

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Ventricular Tachycardia

bundle branch block. [ncbi.nlm.nih.gov]

BACKGROUND: Left posterior fascicular ventricular tachycardia (LPF-VT) is frequently misdiagnosed as supraventricular tachycardia with aberrant right bundle branch block [ncbi.nlm.nih.gov]

The alternation of the QRS is usually right bundle branch block with 180 swings in the frontal plane axis or, less commonly, alternation of right bundle branch and left bundle [ncbi.nlm.nih.gov]

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Acute Massive Pulmonary Embolism

One patient with complete right bundle-branch block and another with normal conduction had a wide and fixed split second sound with a loud pulmonic component. [ncbi.nlm.nih.gov]

bundle branch block (RBBB), as a marker for a main pulmonary trunk embolus [4]. [tcmjmed.com]

Heart Strain RBBB Right axis deviation T-wave in V1-V4 Qr pattern in V1 P2 pulmonic second heart sound RBBB right bundle branch block RV right ventricle Table 2. [intechopen.com]

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Incessant Infant Ventricular Tachycardia

The most common electrocardiographic (ECG) pattern (10 of 21) was right bundle branch block with left axis deviation, but other right and left bundle branch block patterns [ncbi.nlm.nih.gov]

Diagnostic methods The electrocardiogram (ECG) usually shows a type of right bundle branch block morphology and a superior axis, predicting a tachycardia origin in the posterior [orpha.net]

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Third Degree Atrioventricular Block

Additionally, the patient presented with complete right bundle branch block during sinus rhythm. [ncbi.nlm.nih.gov]

Electrocardiography showed sinus rhythm with third degree atrioventricular block and complete right bundle branch block, and precordial leads ST segment elevation. [ncbi.nlm.nih.gov]

The ECG revealed a third degree AV block (35 bpm) and ventricular rhythm with an intermittent right bundle branch block-like QRS-complex. [neurology.org]

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Eisenmenger Syndrome

Congenital heart disease with left-to-right shunt can induce proliferation, vasoconstriction and thrombosis in the pulmonary vascular bed. Eventually, the patient may develop Eisenmenger syndrome defined as pulmonary arterial hypertension caused by high pulmonary vascular resistance with right-to-left shunt and[…] [ncbi.nlm.nih.gov]

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AV Block Mobitz I

We report on a patient with intra-His bundle block in second-degree Mobitz I AV block with right bundle branch block. [ncbi.nlm.nih.gov]

The surface ECG shows second-degree Mobitz I atrioventricular block (A:V sequence 4:3 type) with right bundle branch block. [academic.oup.com]

bundle branch block (RBBB)configuration is a Mobitz II but transition strips indicates this is Mobitz I. [learningecg.blogspot.com]

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Ventricular Bigeminy

Ventricular Bigeminy with Right Bundle Branch Block Figure 4: Record 207 [3][4] Premature Ventricular Complex Bigeminy [Online image]. (2013). [sites.google.com]

The most common form of aberrant conduction manifests a right bundle branch block (RBBB) pattern. [reliasmedia.com]

This is because under normal circumstances, the right bundle branch tends to exhibit the longest refractory period, which means that an early-occurring impulse (i.e., a PAC [reliasmedia.com]

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AV Block Mobitz II

We report on a patient with intra-His bundle block in second-degree Mobitz I AV block with right bundle branch block. [academic.oup.com]

bundle branch block (RBBB)configuration is a Mobitz II but transition strips indicates this is Mobitz I. [learningecg.blogspot.com]

[…] arising in the affected right bundle branch. [ncbi.nlm.nih.gov]

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Supraventricular Tachycardia with Aberrant Conduction

This can be either a left or right bundle branch block pattern. The following criteria suggest a supraventricular rhythm with aberrancy rather than VT: 1. [aibolita.com]

In this case ( Figure 1 ) it encounters a refractory right bundle branch and therefore the impulse is conducted with right bundle branch block morphology. [ecgwaves.com]

Figure 2 – The postcardioversion ECG showed normal sinus rhythm with right bundle-branch block. [consultant360.com]

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Amyloidosis

(21% were first degree blocks), and 14.5% presented bundle-branch block (in 9% right bundle-branch block and in 5.5% left bundle-branch block). [revespcardiol.org]

[…] of infarction on the echocardiogram) in 47% of the patients; 76% of the patients showed no conduction disorders, only 3% presented second or third degree atrioventricular blocks [revespcardiol.org]

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Ostium Secundum Atrial Septal Defect

Figure 1 The electrocardiogram of a 42-year-old woman with the ostium secundum type of atrial septal defect shows normal sinus rhythm with incomplete right bundle-branch block [nejm.org]

ECG may show right bundle branch block and right axis deviation. Chest radiography typically reveals prominent pulmonary vasculature with right ventricular hypertrophy. [xpertdox.com]

branch block with atrial flutter. [panafrican-med-journal.com]

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Lutembacher Syndrome

P wave (bifid P wave in lead II) and QRS complex abnormalities (right bundle branch block, right ventricular hypertrophy, and right axis deviation) can be seen on ECG. [symptoma.com]

There was no evidence of rheumatic mitral stenosis.ECG showed right axis deviation (AQRS 110 ), and right bundle branch block. There was no left atrial hypertrophy. [jpgmonline.com]

Electrocardiogram [Figure 1] Normal Sinus Rhythm; Incomplete Right Bundle Branch Block (RBBB); Left Atrial Enlargement; Normal PR Interval/Normal Qtc. [ncbi.nlm.nih.gov]

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Ebstein Malformation

Right axis deviation and Right Bundle branch Block are frequently observed as well. [symptoma.com]

[…] atrial hypertrophy Right bundle branch block pattern Pre-excitation due to right-sided accessory pathways – characteristic WPW ECG findings may also be seen, as discussed [pedclerk.bsd.uchicago.edu]

The electrocardiogram showed normal sinus rhythm, dilation of the right atrium and right bundle-branch block. The chest X-ray film showed a CTR 0.95 (Figure 1). [omicsonline.org]

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Nonsustained Ventricular Tachycardia

Right ventricular outflow ectopic loci cause a left bundle branch block pattern, whereas those located in the left ventricle outflow tract appear as right bundle branch block [symptoma.com]

LVOT tachycardias may produce a right bundle branch block (RBBB) morphology with inferior axis and R/S transition at V1 or V2. [heartlandcardiology.com]

RVOT tachycardias produce a left bundle branch block (LBBB) pattern with inferior axis and R/S transition at or beyond V4. [heartlandcardiology.com]

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