Incomplete Right Bundle Branch Block: Causes & Reasons

Possible Causes for Incomplete Right Bundle Branch Block

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]

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]

The 12-lead ECG will show an incomplete right bundle branch block and left axis deviation (in contrast to the secundum ASD which has a right axis deviation). [healio.com]

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]

ECG incomplete right bundle branch block (RBBB morphology with QRS duration between 110-120 ms) increased specificity with crochetage sign in the inferior (II, III, aVF) leads [radiopaedia.org]

Conduction Disorder of the Heart

Right Bundle Branch Block, Left Anterior Fascicular Block, Left Posterior Fascicular Block, Complete and Incomplete Left Bundle Branch Block, Non-specific Intraventricular [play.google.com]

right bundle branch block. [healio.com]

Fibrillation, AV Junctional Rhythm/Tachycardia, Ventricular Premature Complexes, Ventricular Tachycardia, Accelerated Idioventricular Rhythm, Ventricular Fibrillation, AV Block [play.google.com]

Secondary Cardiomyopathy

A previous ECG (two years ago) showed incomplete right bundle branch block morphology but no other abnormality. [radcliffecardiology.com]

Discussion The admission ECG shows sinus tachycardia at a rate of 148bpm, incomplete right bundle branch block, ST-segment depressions in the inferior and anterolateral leads [radcliffecardiology.com]

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]

bundle branch block in the right precordial chest leads may signal the development of RVH In the limb leads right axis deviation develops and at times prominent Q waves simulating [wikidoc.org]

right bundle branch block ST-T wave abnormalities ("strain") in inferior leads Right atrial hypertrophy/overload (“P pulmonale”) S greater than R in leads I, II, III, particularly [ncbi.nlm.nih.gov]

Recurrent Pulmonary Embolism

Review of EKGs showed a trend of increasing right axis deviation with recovery and recurrences during the previous 9 years and a current incomplete right bundle branch block [ncbi.nlm.nih.gov]

EKG showed right axis deviation, a new incomplete right bundle branch block (IRBBB), clockwise rotation, and right heart strain with inverted T waves in V1–V4 ( Figure 2 ) [nature.com]

(PR interval = 0.24 sec), an incomplete right bundle branch block and non-specific ST-segment abnormalities: 1 mm ST elevations in DI, DII and aVL. ( Fig. 1 ) The chest radiography [tmj.ro]

Acute Cor Pulmonale

[…] or complete right bundle branch block (2) S waves in leads I and aVL of > 1.5 mm (3) a shift in the transition zone in the precordial leads to V5 (4) Q waves in leads III [ispub.com]

The ECG may show: sinus tachycardia: the most common abnormality right heart strain pattern incomplete or complete right bundle branch block prominent R wave in lead V1 right [radiopaedia.org]

(PR interval = 0.24 sec), an incomplete right bundle branch block and non-specific ST-segment abnormalities: 1 mm ST elevations in DI, DII and aVL. ( Fig. 1 ) The chest radiography [tmj.ro]

Cor Pulmonale

[…] deviation and incomplete right bundle branch block Changes in cardiac conduction due to right-sided hypertrophy Echocardiography Normal heart size To show ventricular hypertrophy [nursing.unboundmedicine.com]

ECG) Normal electrocardiographic wave form with P, Q, R, S, T waves To reveal increased P-wave amplitude (P-pulmonale) in leads II, III, and a ventricular failure seen in right-axis [nursing.unboundmedicine.com]

Pulmonary Embolism

[…] and complete right bundle branch block [RBBB], and T-wave inversion in leads V1-V4, plus ST elevation in lead aVR and atrial fibrillation suggestive of RV strain from acute [ncbi.nlm.nih.gov]

Among these, ECG changes including sinus tachycardia, new-onset atrial arrhythmias, new right bundle-branch block (complete or incomplete), Qr pattern in V1, S1Q3T3 pattern [circ.ahajournals.org]

The most common abnormalities observed in the study and control groups were sinus tachycardia (18.8% versus 11.8%), incomplete right bundle branch block (4.2% versus 0.0%) [journals.lww.com]

Secondary Pulmonary Hypertension

Right axis deviation (short arrow), increased P-wave amplitude in lead II (black arrowhead), and incomplete right bundle branch block (white arrowhead) are highly specific [aafp.org]

[…] but lack sensitivity for the detection of right ventricular hypertrophy. 12 FIGURE 1 Electrocardiogram demonstrating the changes of right ventricular hypertrophy (long arrow [aafp.org]

View/Print Figure FIGURE 1 Electrocardiogram demonstrating the changes of right ventricular hypertrophy (long arrow) with strain in a patient with primary pulmonary hypertension [aafp.org]

Patent Ductus Arteriosus

His chest X-ray showed cardiomegaly and enlargement of the left pulmonary hilum, and an electrocardiogram revealed sinus tachycardia with incomplete right bundle branch block [elsevier.pt]

Cardiomyopathy

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

The second characteristic is the appearance of a complete or incomplete right bundle branch block (RBBB) that indicates disordered conductivity of the Purkinje fibers. [hrcak.srce.hr]

Patent Foramen Ovale

Incomplete right bundle branch block is frequently present. Crochetage (a notch seen in QRS in leads II and III) can be seen in secundum ASD cases. [thecardiologyadvisor.com]

A common finding in the ECG is the presence of incomplete right bundle branch block, which is so characteristic that if it is absent, the diagnosis of ASD should be reconsidered [en.wikipedia.org]

ECG in patients with ASD might show right (secundum) or left axis deviation (primum). The p-wave axis might be abnormal and the PR might be prolonged. [thecardiologyadvisor.com]

Eisenmenger Syndrome

[…] ischemia or strain, and incomplete right bundle branch block. [bmccardiovascdisord.biomedcentral.com]

[…] lead suggestive of ischemia or strain, and incomplete right bundle branch block (RBBB; Fig. 1). [bmccardiovascdisord.biomedcentral.com]

Electrocardiogram showed regular sinus rhythm with right axis deviation, right ventricular hypertrophy, deep T-wave inversion in inferior and anterior leads suggestive of [bmccardiovascdisord.biomedcentral.com]

Pulmonary Hypertension

Right axis deviation (short arrow), increased P-wave amplitude in lead II (black arrowhead), and incomplete right bundle branch block (white arrowhead) are highly specific [aafp.org]

[…] but lack sensitivity for the detection of right ventricular hypertrophy. 12 FIGURE 1 Electrocardiogram demonstrating the changes of right ventricular hypertrophy (long arrow [aafp.org]

View/Print Figure FIGURE 1 Electrocardiogram demonstrating the changes of right ventricular hypertrophy (long arrow) with strain in a patient with primary pulmonary hypertension [aafp.org]

Chronic Obstructive Pulmonary Disease

Symptoms and signs may include: Fatigue Dyspnea Paroxysmal nocturnal dyspnea (PND) Chest tightness Wheezing Cough with sputum (mucoid and/or purulent) Fever Chest pain Workup consists of a detailed history, tests and physical examination. Laboratory Tests Complete blood count Arterial blood gases Serum[…] [symptoma.com]

Dilated Cardiomyopathy

(rollover to compare with normal) What Is It? In this defect, the muscle wall of the left ventricle (the heart's main pumping chamber) is weaker than normal. As a result, the left ventricle may become enlarged (dilated) and the ability of the heart muscle to contract is impaired. There is also slight enlargement of[…] [pted.org]

Pulmonary Fibrosis

PFA Joins Over 200 Groups in Applauding Congressional Leaders for Increased NIH Funding In a letter to the four leading appropriators in Congress -- Sen. Roy Blunt, Sen. Patty Murray, Rep. Tom Cole, and Rep. Rosa DeLauro -- PFA joined over 200 leading patient, provider, and industry groups to champion their[…] [pfadvocates.org]

Brugada Syndrome

Significant findings: ECG shows an incomplete right bundle branch block (blue arrow) with coved ST segment elevation and an inverted T wave in V1 (red arrow) and ST segment [jetem.org]

Brugada Syndrome (BrS) is a cardiac disorder characterized by incomplete right bundle-branch block and ST elevations in the anterior precordial leads especially V1 -V3, associated [ncbi.nlm.nih.gov]

Brugada syndrome is a genetic disease that is characterized by raised ST segment in the right precordial leads, complete or incomplete right bundle branch block and susceptibility [symptoma.com]

Ostium Secundum Atrial Septal Defect

The 12-lead ECG will show an incomplete right bundle branch block with right axis deviation (in contrast to the priumum ASD which has a left axis deviation). [healio.com]

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]

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

Acute Myocarditis

AIM: Cardiac magnetic resonance (CMR) can visualize inflammatory tissue changes in acute myocarditis. Several quantitative image-derived parameters have been described to enhance the diagnostic value of CMR, but no direct comparison of these techniques is available. METHODS AND RESULTS: A total of 34 patients with[…] [ncbi.nlm.nih.gov]

Diffuse Intraventricular Block

premature ventricular contractions; left or right axis deviation; delayed transition; left bundle branch block (LBBB) (complete or incomplete); right bundle branch block [journals.plos.org]

Ostium primum atrial septal defects cause an incomplete right bundle branch block with left axis deviation. [healio.com]

bundle branch block, right heart block characterized by a delay or failure of impulse propagation through the right bundle branch ; it may be either complete or incomplete [medical-dictionary.thefreedictionary.com]

Chronic Interstitial Lung Disease

BACKGROUND: Risk prediction is challenging in chronic interstitial lung disease (ILD) because of heterogeneity in disease-specific and patient-specific variables. Our objective was to determine whether mortality is accurately predicted in patients with chronic ILD using the GAP model, a clinical prediction model based on[…] [ncbi.nlm.nih.gov]

Endocardial Cushion Defect

We describe one case of endocardial cushion defect during the second trimester when a consultative fetal echocardiography was undertaken for fetal intrauterine growth retardation with oligohydramnios. Positive cytomegalovirus IgM in cord blood and cytomegalovirus DNA particles in the amniotic fluid were found[…] [ncbi.nlm.nih.gov]

Atrioventricular 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]

The 12-lead ECG will show an incomplete right bundle branch block and left axis deviation (in contrast to the secundum ASD which has a right axis deviation). [healio.com]

Acute Massive Pulmonary Embolism

His electrocardiogram (ECG) on arrival in the emergency department displayed sinus tachycardia, an S wave in lead I, a Q wave in lead III, incomplete right bundle branch block [tcmjmed.com]

right bundle-branch block, anteroseptal ST elevation or depression, or anteroseptal T-wave inversion) Myocardial necrosis is defined as either of the following: —Elevation [emcrit.org]

right bundle-branch block; and/or 2 – Anteroseptal ST elevation or depression; and/or 3 – Anteroseptal T-wave inversion Serum biomarkers Elevations in BNP, pro-NT BNP and [acc.org]

Long QT Syndrome 3

bundle-branch block and ST elevations in the anterior precordial leads. [emedicine.medscape.com]

Practice Essentials Brugada syndrome is a disorder characterized by sudden death associated with one of several ECG patterns characterized by incomplete right bundle-branch [emedicine.medscape.com]

Background Brugada syndrome is a disorder characterized by sudden death associated with one of several electrocardiographic (ECG) patterns characterized by incomplete right [emedicine.medscape.com]

Right Atrial Hypertrophy

Incomplete right bundle branch block suggests slowing of electrical impulse conduction in the right bundle branch of the conduction system. [healthtap.com]

Right ventricular conduction delay or incomplete right bundle branch block without right ventricular hypertrophy or right axis deviation Isolated intraventricular conduction [aafp.org]

Investigations ECG: findings are usually nonspecific; they may show right atrial hypertrophy (tall peaked 'p' waves), incomplete right bundle-branch block, Q waves in lead [patient.info]

Alcoholic Cardiomyopathy

2015 ICD-9-CM Diagnosis Code 425.5 Alcoholic cardiomyopathy 2015 Billable Thru Sept 30/2015 Non-Billable On/After Oct 1/2015 ICD-9-CM 425.5 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 425.5 should only be used for claims with a date of service on or before[…] [icd9data.com]

Lutembacher Syndrome

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

[…] deviation Complete or incomplete right bundle-branch block or right ventricular hypertrophy Procedures Cardiac catheterization is not performed routinely to confirm the diagnosis [emedicine.medscape.com]

QRS shows right-axis deviation, right ventricular hypertrophy, complete or incomplete right bundle-branch block. [patient.info]