Incomplete Right Bundle Branch Block: Causes & Reasons

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Possible Causes for Incomplete Right Bundle Branch Block

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]

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]

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]

Ostium Primum Atrial Septal Defect

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]

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]

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]

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]

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]

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]

Incomplete or rarely complete right bundle branch block Low voltage QRS Occasional large Q wave or QS in V1,V2, even V3,suggesting healed myocardial infarction 25. [slideshare.net]

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]

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]

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]

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]

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

Summary COPD (chronic obstructive pulmonary disease) makes it hard for you to breathe. The two main types are chronic bronchitis and emphysema. The main cause of COPD is long-term exposure to substances that irritate and damage the lungs. This is usually cigarette smoke. Air pollution, chemical fumes, or dust can[…] [medlineplus.gov]

Dilated Cardiomyopathy

Dilated cardiomyopathy is characterized by increased ventricular size and impaired ventricular function. It is the most common form of non-ischemic cardiomyopathy. Symptoms are a good indicator of the severity of dilated cardiomyopathy. The following are the symptoms with which the patient may present and based on[…] [symptoma.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]

Pulmonary Fibrosis

In pulmonary fibrosis, excess fibrous connective tissue develops in the lungs. It presents initially with dyspnea, loss of appetite, fatigue and dry cough. The most pronounced clinical feature of pulmonary fibrosis is progressive exertional dyspnea associated with the production of dry cough. On examination, there is[…] [symptoma.com]

Brugada Syndrome

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]

/complete right bundle branch block (RBBB) morphology rSR' pattern, complete RBBB has a QRS duration > 0.12 seconds, incomplete between 0.10-0.12 seconds elevation of the [radiopaedia.org]

Eisenmenger Syndrome

Journal of Medical Case Reports 2008 2 :149 https://doi.org/10.1186/1752-1947-2-149 © Siddiqui and Latif; licensee BioMed Central Ltd. 2008 Received: 02 August 2007 Accepted: 09 May 2008 Published: 09 May 2008 Abstract Introduction Eisenmenger's syndrome in pregnancy can lead to death in 50% to 65% of parturients.[…] [doi.org]

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]

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]

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]

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]

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]

Atrial Septal Defect 9

Decisive for the request for second level tests was the basic electrocardiogram, which presented a right ventricular conduction delay of the incomplete right bundle branch [minervamedica.it]

Incomplete right bundle branch block and right ventricular enlargement were found in all cases, as was cardiomegaly with increased vascular markings were found in all cases [paediatricaindonesiana.org]

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]

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]

Athletic Heart Syndrome

Ventricular Hypertrophy criteria Wide QRS Complex (incomplete Right Bundle Branch Block ) Athletes: 14% Incidence Gene ral athletes: 10% Incidence Repolarization changes [fpnotebook.com]

First or second degree atrioventricular (AV) blocks, incomplete right bundle branch block (RBBB), extrasystoles, and early repolarization (presenting as ST elevation) are [symptoma.com]

Of 21 marathon runners in the 1962 Commonwealth Games, 5 had incomplete right bundle branch block ( RBBB ) and 16 had increased QRS voltage suggesting left ventricular hypertrophy [longislandsportsmassage.com]