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]

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]

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]

Primary Pulmonary Arterial Hypertension

II. Epidemiology Incidence : 1-2 cases per 1 million (rare) Female predominance after Puberty in ratio of 1.7 to 1 Most prevalent in ages 20 to 40 years old III. Causes See Pulmonary Arterial Hypertension Causes Idiopathic or familial Gene tic associations BMPR2 gene ALK1 gene Endoglin (with or without Hereditary[…] [fpnotebook.com]

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]

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]