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Right bundle branch block

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https://www.readbyqxmd.com/read/29786701/lutembacher-syndrome-with-mitral-valve-calcification-in-a-31-year-old-male
#1
Arsalan Majeed Adam, Ansab Godil, Muhammad Saad Ali Mallick, Fahad Khan, Ather Hasan Rizvi, Inam-Ul-Haq Muhammad Makhdoom
Lutembacher syndrome is characterized by a congenital ostium secundum atrial septal defect and an acquired mitral valve stenosis. We present a similar case in a 31-year old male who came in with orthopnoea, central cyanosis and pedal oedema. Examination revealed cardiac murmurs in tricuspid and apical regions. Chest x-ray showed signs of pulmonary congestion and ventricular enlargement. Electrocardiogaphy (ECG) revealed right axis deviation and right bundle branch block along with atrial fibrillation and Transthoracic Echocardiography (TTE) showed abnormal valves (mitral stenosis with calcification and tricuspid regurgitation) and dilated cardiac chambers...
February 2018: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/29782250/-effect-of-right-ventricular-myocardial-contractility-on-the-response-to-cardiac-resynchronization-therapy
#2
D I Lebedev, S V Popov, A I Mishkina, M V Lebedeva
AIM: To determine the effect of right ventricular myocardial contractility on the response to cardiac resynchronization therapy (CRT). MATERIALS AND METHODS: The study included 80 patients (49 men, mean age 54±10.5) diagnosed with dilated cardiomyopathy, complete left bundle branch block, and the QRS complex width 146 to 240 ms (183±32 ms). Heart failure was NYHA FC III, ejection fraction (EF) - 30.1±3.8 %, 6‑min walk test - 290.5±64.3 m, and end-diastolic volume (EDV) - 220...
2018: Kardiologiia
https://www.readbyqxmd.com/read/29781518/an-interesting-case-of-wide-qrs-tachycardia-with-right-bundle-branch-block-morphology-what-is-the-mechanism
#3
Krishna Kumar Mohanan Nair, Narayanan Namboodiri, Hiren Kevadiya, Ajitkumar Valaparambil
A 30 year old gentleman with no structural heart disease has been evaluated for paroxysmal palpitation with documented regular wide QRS tachycardia that has not responded to IV adenosine. Surface electrocardiogram has not shown any pre-excitation. He has been taken for an EP study after informed consent. Diagnostic catheters were placed at coronary sinus (CS), His bundle region and right ventricle (RV). During catheter manipulation a regular wide QRS tachycardia with right bundle branch block morphology (RBBB) with a tachycardia cycle length (TCL) of 400 ms and normal QRS axis similar to the clinical tachycardia got induced (Fig:1)...
May 21, 2018: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29778237/prevalence-temporal-evolution-and-impact-on-survival-of-ventricular-conduction-blocks-in-patients-with-acute-coronary-syndrome-and-cardiogenic-shock
#4
Heli Tolppanen, Tuija Javanainen, Jordi Sans-Rosello, Jiri Parenica, Tuomo Nieminen, Marie Pavlusova, Josep Masip, Lars Köber, Marek Banaszewski, Alessandro Sionis, Jindrich Spinar, Veli-Pekka Harjola, Raija Jurkko, Johan Lassus
Changes in QRS duration and pattern are regarded to reflect severe ischemia in acute coronary syndromes (ACS), and ventricular conduction blocks (VCBs) are recognized high-risk markers in both ACS and acute heart failure. Our aim was to evaluate the prevalence, temporal evolution, association with clinical and angiographic parameters, and impact on mortality of VCBs in ACS-related cardiogenic shock (CS). Data of 199 patients with ACS-related CS from a prospective multinational cohort were evaluated with electrocardiogram data from baseline and day 3...
April 20, 2018: American Journal of Cardiology
https://www.readbyqxmd.com/read/29759535/utility-of-conventional-electrocardiographic-criteria-in-patients-with-idiopathic-ventricular-tachycardia
#5
Anil V Yadav, Babak Nazer, Barbara J Drew, John M Miller, Hicham El Masry, William J Groh, Andrea Natale, Nassir Marrouche, Nitish Badhwar, Yanfei Yang, Melvin M Scheinman
OBJECTIVES: This study sought to determine the ability of conventional electrocardiographic (ECG) criteria to correctly differentiate idiopathic ventricular tachycardia (VT) from supraventricular tachycardia (SVT) with aberrancy. BACKGROUND: Previously reported VT ECG criteria were developed from cohorts of patients with structural heart disease and have not been applied to patients with idiopathic VT. METHODS: ECGs of 115 idiopathic VTs, 101 post-myocardial infarction (MI) VTs, and 111 wide QRS SVTs were analyzed using standard criteria...
July 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29752526/application-of-the-bogossian-formula-for-evaluation-of-the-qt-interval-in-pacemaker-patients-with-stimulated-left-bundle-branch-block
#6
K F Weipert, H Bogossian, P Conzen, G Frommeyer, C Gemein, I Helmig, R Chasan, L Eckardt, M Seyfarth, B Lemke, M Zarse, C W Hamm, J Schmitt, D Erkapic
BACKGROUND: The presence of left bundle branch block (LBBB) represents a particular challenge in properly measuring the QT interval. Here we demonstrate the applicability of the "Bogossian formula" in pacemaker patients with LBBB due to apical or nonapical right ventricular (RV) pacing and preserved left ventricular function. METHODS: A total of 163 patients with a cardiac one- or two-chamber pacemaker were included in this prospective, multicentre observational study...
May 11, 2018: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/29748527/extreme-right-axis-deviation-in-acute-myocardial-infarction-a-hazardous-signal-of-poor-prognosis
#7
Qingyu Wang, Shuo Pan, Fuqiang Liu, Dan Yang, Jun-Kui Wang
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 cases reflecting the severity of AMI. It could predict severe clinical complications and higher risks in coronary artery disease. Although there is little electrophysiological explanation, the complications are severe. They should be emphasized in newly diagnosed extreme right axis deviation and RBBB in AMI. CASE REPORT A 72-year-old male was admitted to our department with a chief complaint of intermittent retrosternal chest pain and was diagnosed with extensive anterior myocardial infarction with RBBB, by elevated myocardial enzymes and ECG...
May 11, 2018: American Journal of Case Reports
https://www.readbyqxmd.com/read/29731285/prehospital-acute-st-elevation-myocardial-infarction-identification-in-san-diego-a-retrospective-analysis-of-the-effect-of-a-new-software-algorithm
#8
Christanne Coffey, John Serra, Mat Goebel, Sarah Espinoza, Edward Castillo, James Dunford
BACKGROUND: A significant increase in false positive ST-elevation myocardial infarction (STEMI) electrocardiogram interpretations was noted after replacement of all of the City of San Diego's 110 monitor-defibrillator units with a new brand. These concerns were brought to the manufacturer and a revised interpretive algorithm was implemented. OBJECTIVES: This study evaluated the effects of a revised interpretation algorithm to identify STEMI when used by San Diego paramedics...
May 3, 2018: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29727501/a-wide-complex-tachycardia-with-atypical-right-bundle-branch-block-qrs-morphology-what-is-the-mechanism
#9
Tam Tsz Kin, Joseph Y S Chan, George J Klein
No abstract text is available yet for this article.
May 4, 2018: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/29723683/beyond-the-length-and-look-of-repolarization-defining-the-non-qtc-electrocardiographic-profiles-of-patients-with-congenital-long-qt-syndrome
#10
Conor M Lane, J Martijn Bos, Ram K Rohatgi, Michael J Ackerman
BACKGROUND: Little is known about the spectrum and prevalence of ECG features beyond the length and morphology of repolarization in patients with congenital long QT syndrome (LQTS). OBJECTIVE: To characterize the full ECG phenotype of LQTS patients and evaluate differences by age and LQTS genotype. METHODS: Retrospective review of 943 patients with LQTS (57% female, median age 25 years; IQR 9 - 34 years) was performed. Comprehensive analysis of their initial evaluation ECG was performed using definitions outlined in Heart Rhythm Society guidelines...
April 30, 2018: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/29722042/bicarbonate-refractory-qrs-prolongation-and-left-bundle-branch-block-following-escitalopram-and-lamotrigine-overdose-a-case-report-and-literature-review-of-toxic-left-bundle-branch-block
#11
A N Farkas, M Marcott, J H Yanta, A F Pizon
WHAT IS KNOWN AND OBJECTIVE: Toxic prolongation of the QRS interval most often results from blockade of cardiac voltage-gated sodium channels and manifests on electrocardiogram with a right bundle-branch block-like morphology. Rarely, a left bundle-branch block (LBBB) morphology has been reported. CASE REPORT: We report a case of transient LBBB resultant from ingestion of lamotrigine and citalopram which was refractory to sodium bicarbonate therapy and eventually resolved spontaneously...
May 2, 2018: Journal of Clinical Pharmacy and Therapeutics
https://www.readbyqxmd.com/read/29705366/permanent-pacemaker-implantation-following-rapid-deployment-aortic-valve-replacement
#12
Matthew A Romano, Michael Koeckert, Mubashir A Mumtaz, Frank N Slachman, Himanshu J Patel, W Randolph Chitwood, Glenn R Barnhart, Eugene A Grossi
BACKGROUND: Expandable, rapid deployment aortic valves may interfere with the cardiac conduction system, which can lead to permanent pacemaker implantation (PPI). We sought to characterize PPI following rapid deployment aortic valve replacement (RDAVR) with the EDWARDS INTUITY valve system and investigate associated factors. METHODS: We analyzed 708 patients from 29 centers in the TRANSFORM trial undergoing RDAVR ± CABG without pre-existing pacemakers. Intrinsic conduction status was recorded as well as PPI incidence through one year...
April 26, 2018: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29700054/ventricular-electrical-delay-measured-from-body-surface-ecgs-is-associated-with-cardiac-resynchronization-therapy-response-in-left-bundle-branch-block-patients-from-the-madit-crt-trial-multicenter-automatic-defibrillator-implantation-cardiac-resynchronization
#13
Filip Plesinger, Pavel Jurak, Josef Halamek, Petr Nejedly, Pavel Leinveber, Ivo Viscor, Vlastimil Vondra, Scott McNitt, Bronislava Polonsky, Arthur J Moss, Wojciech Zareba, Jean-Philippe Couderc
BACKGROUND: Although cardiac resynchronization therapy (CRT) is beneficial in heart failure patients with left bundle branch block, 30% of these patients do not respond to the therapy. Identifying these patients before implantation of the device is one of the current challenges in clinical cardiology. METHODS: We verified the diagnostic contribution and an optimized computerized approach to measuring ventricular electrical activation delay (VED) from body surface 12-lead ECGs...
May 2018: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/29688314/electrocardiographic-characteristics-anthropometric-features-and-cardiovascular-risk-factors-in-a-large-cohort-of-adolescents
#14
Massimo Santini, Stefania Angela Di Fusco, Furio Colivicchi, Alessio Gargaro
Aims: The characteristics of electrocardiographic (ECG) patterns in the general population of adolescents are insufficiently defined. The purpose of this study is to report ECG patterns and their association with anthropometric characteristics. Methods and results: Twenty-four thousand and sixty-two students of Roman schools, aged 12-19, were screened with ECG and physical examinations. Electrocardiographic abnormalities were classified as either minor/non-clinically relevant or major, and anthropometric measures were evaluated per age class...
April 23, 2018: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/29683541/an-interesting-case-of-narrow-qrs-tachycardia-with-incomplete-right-bundle-branch-block-morphology-what-is-the-mechanism
#15
Krishna Kumar Mohanan Nair, Narayanan Namboodiri, Hiren Kevadiya, Ajitkumar Valaparambil
No abstract text is available yet for this article.
April 23, 2018: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/29676823/wide-qrs-tachycardia-with-right-bundle-branch-block-qrs-morphology-that-is-almost-identical-to-that-during-sinus-rhythm-what-is-the-mechanism
#16
Yasushi Wakabayashi, Takekuni Hayashi, Yoshitaka Sugawara, Takeshi Mitsuhashi, Hideo Fujita, Shin-Ichi Momomura
No abstract text is available yet for this article.
April 20, 2018: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/29675905/transient-left-anterior-and-septal-fascicular-blocks-after-self-expandable-percutaneous-transcatheter-aortic-valve-implantation
#17
Andrés R Pérez-Riera, Raimundo Barbosa-Barros, Mariana F Cabral de Oliveira, Rodrigo Daminello-Raimundo, Luiz C de Abreu, Kjell Nikus
Transcatheter aortic valve implantation (TAVI) is indicated in severe symptomatic aortic stenosis, when there is intermediate-high surgical risk, or a condition considered inoperable, as in the case of "porcelain aorta" that could turn clamping or cannulation of the ascending aorta hazardous in open-heart surgery. Among the complications of this less invasive procedure, intraventricular conduction disorders subsequent to the procedure stand out. TAVI causes worsening of intraventricular dromotropic disorders in more than 75% of the cases, with the presence of preexisting right bundle branch block and first-degree atrioventricular block, deep prosthesis implant, male gender, size of the aortic annulus smaller than the prosthesis, and porcelain aorta being predictive of requirement for permanent pacemaker implant...
April 19, 2018: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/29665757/severe-brady-arrhythmias-in-systemic-lupus-erythematosus-prevalence-etiology-and-associated-factors
#18
K Tselios, D D Gladman, P Harvey, J Su, M B Urowitz
Background Severe brady-arrhythmias, requiring a permanent pacemaker (PPM), have been sparsely reported in systemic lupus erythematosus (SLE). The aim of this study was to describe the characteristics of such arrhythmias in a defined lupus cohort. Patients and methods The database of the Toronto Lupus Clinic ( n = 1366) was searched for patients who received a PPM. Demographic, clinical, immunological and therapeutic variables along with electrocardiographic (ECG) and echocardiographic findings (based on the last available test prior to PPM) were analyzed...
January 1, 2018: Lupus
https://www.readbyqxmd.com/read/29658207/ablation-induced-change-in-the-course-of-fascicular-tachycardia
#19
Avishag Laish-Farkash, Avi Sabbag, Michael Glikson, Aharon Glick, Vladimir Khalameizer, Amos Katz, Yoav Michowitz
BACKGROUND: Multiform fascicular tachycardia (FT) was recently described as a ventricular tachycardia (VT) that has a reentrant mechanism using multiple fascicular branches and produces alternate fascicular VT forms. Ablating the respective fascicle may cause a change in the reentrant circuit resulting in a change in morphology. Ablation of the septal fascicle is crucial for successful treatment. OBJECTIVES: To describe four cases of FT in which ablation induced a change in QRS morphologies and aggravated clinical course...
January 2018: Israel Medical Association Journal: IMAJ
https://www.readbyqxmd.com/read/29652656/electrocardiogram-abnormalities-related-to-anti-malarials-in-systemic-lupus-erythematosus
#20
Taneisha K McGhie, Paula Harvey, Jiandong Su, Nicole Anderson, George Tomlinson, Zahi Touma
OBJECTIVES: Cardiotoxicity with potential conduction/structural abnormalities on electrocardiogram (ECG) have been reported with anti-malarial (AM). We aimed to study whether cumulative AM is associated with ECG abnormalities. METHODS: A standard resting supine ECG was performed on consecutive patients attending the Lupus Clinic since 2012. ECG abnormalities were grouped into structural [left ventricular hypertrophy or atrial enlargement] and conduction abnormalities [prolonged corrected QT interval (QTc), short PR interval, left bundle branch block (LBBB), right bundle branch block (RBBB) and atrioventricular block (AVB), bradycardia, tachycardia, premature atrial complex, ectopic atrial rhythm, atrial fibrillation, premature ventricular complex and ventricular bigeminy]...
April 13, 2018: Clinical and Experimental Rheumatology
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