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Right bundle branch block

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https://www.readbyqxmd.com/read/28197277/scoring-system-based-on-electrocardiogram-features-to-predict-the-type-of-heart-failure-in-patients-with-chronic-heart-failure
#1
Purnasidha Bagaswoto Hendry, Lucia Krisdinarti, Maharani Erika
BACKGROUND: Heart failure (HF) is divided into heart failure with reduced ejection fraction (HFrEF) and heart failure with preserved ejection fraction (HFpEF). Mortality from HF is inversely related to left ventricular function. Additional studies are required to distinguish between these two types of HF. A previous study showed that HFrEF is less likely when electrocardiogram (ECG) findings are normal. This study aims to create a scoring system based on ECG findings that will predict the type of HF...
June 2016: Cardiology Research
https://www.readbyqxmd.com/read/28188971/wide-qrs-tachycardia-with-left-bundle-branch-block-morphology-what-is-the-mechanism
#2
Krishna Kumar Mohanan Nair, Narayanan Namboodiri, Krishna Chaitanya, Sreevilasam Pushpangadhan Abhilash, Anees Thajudeen, Ajitkumar Valaparambil
A 55-year-old woman was referred for radiofrequency catheter ablation of narrow QRS tachycardia that was terminated with intravenous adenosine. Twelve-lead ECG was normal during sinus rhythm. The electrophysiological study showed an AH interval of 114 ms and HV interval of 42 ms during sinus rhythm. This article is protected by copyright. All rights reserved.
February 11, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28183339/prevalence-and-associated-factors-of-resting-electrocardiogram-abnormalities-among-systemic-lupus-erythematosus-patients-without-cardiovascular-disease
#3
Hanan Al Rayes, Paula J Harvey, Dafna D Gladman, Jiandong Su, Arthy Sabapathy, Murray B Urowitz, Zahi Touma
BACKGROUND: Electrocardiogram (ECG) cardiovascular disease (CVD) abnormalities (ECG-CVD) are predictive of subsequent CVD events in the general population. Systemic lupus erythematosus (SLE) patients are vulnerable to CVD. We aimed to determine the prevalence of ECG-CVD in SLE patients and to examine the risk factors associated with ECG-CVD. METHODS: A 12-lead resting supine ECG was performed on consecutive adult patients attending the clinic. One cardiologist interpreted the ECGs...
February 10, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28164349/applicability-of-a-novel-formula-bogossian-formula-for-evaluation-of-the-qt-interval-in-heart-failure-and-left-bundle-branch-block-due-to-right-ventricular-pacing
#4
Gerrit Frommeyer, Harilaos Bogossian, Eleni Pechlivanidou, Philipp Conzen, Christopher Gemein, Kay Weipert, Inga Helmig, Ritvan Chasan, Victoria Johnson, Lars Eckardt, Christian W Hamm, Melchior Seyfarth, Bernd Lemke, Markus Zarse, Jörn Schmitt, Damir Erkapic
BACKGROUND: The presence of left bundle branch block (LBBB) due to right ventricular pacing represents a particular challenge in properly measuring the QTc interval. In 2014 a new formula for evaluation of QT interval in patients with LBBB was reported. METHODS: 145 patients with implantable cardioverter defibrillator (ICD) were included in this prospective multicenter observational study. Inclusion criteria were: no permanent right ventricular stimulation, an intrinsic QRS interval of <120ms and reduced left ventricular function...
February 5, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28144025/case-report-of-s1q3t3-electrocardiographic-abnormality-in-a-pregnant-asthmatic-patient-during-acute-bronchospasm
#5
Hafiza Arshad, Rana Rahel Khan, Misbahuddin Khaja
BACKGROUND Asthma is the most common chronic pulmonary disease during pregnancy. Several previous reports have documented reversible electrocardiographic changes during severe acute asthma attacks, including tachycardia, P pulmonale, right bundle branch block, right axis deviation, and ST segment and T wave abnormalities. CASE REPORT We present the case of a pregnant patient with asthma exacerbation in which acute bronchospasm caused S1Q3T3 abnormality on an electrocardiogram (ECG). The complete workup of ECG findings of S1Q3T3 was negative and correlated with bronchospasm...
February 1, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28140304/electrical-approach-to-improve-left-ventricular-activation-during-right-ventricle-stimulation
#6
María Paula Bonomini, Daniel F Ortega, Luis D Barja, Nicolasa Mangani, Analía Paolucci, Emilio Logarzo
Coronary sinus mapping is commonly used to evaluate left atrial activation. Herein, we propose to use it to assess which right ventricular pacing modality produces the shortest left ventricular activation times (R-LVtime) and the narrowest QRS widths. Three study groups were defined: 54 controls without intraventricular conduction disturbances; 15 patients with left bundle branch block, and other 15 with right bundle branch block. Left ventricular activation times and QRS widths were evaluated among groups under sinus rhythm, right ventricular apex, right ventricular outflow tract and high output septal zone (SEPHO)...
2017: Medicina
https://www.readbyqxmd.com/read/28125405/av-nodal-reentrant-tachycardia-with-a-2-1-right-bundle-branch-block-missed-as-bidirectional-ventricular-tachycardia-in-the-first-superficial-evaluation
#7
Mohammad Ali Akbarzadeh, Isa Khaheshi, Mehdi Memaryan, Mohammad Parsa Mahjoob, Mohammadreza Naderian
A 95-year old woman was admitted to our emergency unit because of acute abdominal pain. After urgent surgery according to the acute abdomen, she was referred to intensive care unit (ICU) of the emergency unit as she was intubated. It was developed a run of new arrhythmia which was diagnosed by cardiology resident as bidirectional ventricular tachycardia due to beat to beat changing the axis of the QRS. However, a second and more precise evaluation of the abnormal ECG suggested a narrow supraventricular tachycardia, most probably AV nodal reentrant tachycardia with a 2:1 right bundle branch block...
January 25, 2017: Romanian Journal of Internal Medicine, Revue Roumaine de Médecine Interne
https://www.readbyqxmd.com/read/28114719/-right-bundle-branch-block-left-bundle-branch-block-pace-maker-in-case-of-acute-coronary-syndrome-is-the-ecg-of-any-value
#8
Steffen Grautoff
The 12 lead ECG is difficult to evaluate if there is a persistent right or even left bundle block or a pace maker continually stimulating the right ventricle. Despite these pre-existing or new ECG changes it might still be possible to detect variations which can hint to an ST-elevation myocardial infarction (STEMI). Diagnosing significant ST elevations in a case of right bundle block is not very challenging. If the ECG shows a left bundle block the modified Sgarbossa criteria should be used for evaluation. These criteria can also be used in a pace maker ECG...
January 2017: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/28104974/rare-manifestation-of-digoxin-toxicity-right-bundle-branch-block
#9
Dalvir Gill, Samana Zaidi
A 76-year-old female, with medical history significant for systolic congestive heart failure, who presented to the emergency department with lethargy and abdominal pain with diarrhea for the past 3 weeks. Due to hypotension, the patient received multiple boluses of isotonic saline and was started on norepinephrine. Laboratories were significant for severe digoxin toxicity (29 ng/mL), in setting of acute kidney injury. Electrocardiogram (EKG) revealed a new right bundle branch block (RBBB). She was given Digibind and her repeat digoxin level was 20 ng/mL...
December 2016: Journal of Basic and Clinical Pharmacy
https://www.readbyqxmd.com/read/28073567/the-influence-of-native-aortic-valve-calcium-and-transcatheter-valve-oversize-on-the-need-for-pacemaker-implantation-after-transcatheter-aortic-valve-insertion
#10
Fu'ad Al-Azzam, Kevin L Greason, Chayakrit Krittanawong, Eric E Williamson, Christopher J McLeod, Katherine S King, Verghese Mathew
OBJECTIVE: Native aortic valve calcium and transcatheter aortic valve oversize have been reported to predict pacemaker implantation after transcatheter aortic valve insertion. We reviewed our experience to better understand the association. METHODS: We retrospectively reviewed the records of 300 patients with no prior permanent pacemaker implantation who underwent transcatheter aortic valve insertion from November 2008 to February 2015. Valve oversize was calculated using area...
November 29, 2016: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28056232/-analysis-of-cardiac-troponin-c-gene-tnnc1-c-g175c-mutation-in-a-chinese-pedigree-with-familial-hypertrophic-cardiomyopathy-and-the-correlation-between-genotype-and-phenotype
#11
X B Xing, F S Liu, F Wang, L Song, W N Zhao, J Liu, K C Zhang, Y Z Zhu, X F Shang, R Li, Y Liang
Objective: To investigate the genotype-phenotype correlation in Chinese familial hypertrophic cardiomyopathy (HCM )focusing on the cardiac troponin C gene TNNC1 c. G175C mutation. Methods: All family members of a Chinese pedigree with hypertrophic cardiomyopathy admitted in Third People's Hospital of Qingdao in February 2005 and 200 healthy volunteers were included in this study. The coding exons of 30 hypertrophic cardiomyopathy associated genes were identified by whole exons amplification and high-throughput sequencing in the proband, and the identified mutation were further detected through bi-directional Sanger sequencing in all family members and 200 healthy volunteers...
December 24, 2016: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/28056014/prevalence-of-chagas-disease-in-a-u-s-population-of-latin-american-immigrants-with-conduction-abnormalities-on-electrocardiogram
#12
Mahmoud I Traina, Salvador Hernandez, Daniel R Sanchez, Jalal Dufani, Mohsin Salih, Adieb M Abuhamidah, Wilman Olmedo, Jason S Bradfield, Colin J Forsyth, Sheba K Meymandi
Chagas disease (CD) affects over six million people and is a leading cause of cardiomyopathy in Latin America. Given recent migration trends, there is a large population at risk in the United States (US). Early stage cardiac involvement from CD usually presents with conduction abnormalities on electrocardiogram (ECG) including right bundle branch block (RBBB), left anterior or posterior fascicular block (LAFB or LPFB, respectively), and rarely, left bundle branch block (LBBB). Identification of disease at this stage may lead to early treatment and potentially delay the progression to impaired systolic function...
January 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28054710/atypical-surface-ecg-complicating-the-diagnosis-of-bundle-branch-reentry-tachycardia
#13
Christopher Reithmann, Bernhard Herkommer, Thomas Remp, Michael Fiek
BACKGROUND: Typical left bundle branch block (LBBB) during ventricular tachycardia (VT) is a diagnostic criterion of bundle branch reentry tachycardia (BBRT) with activation of the right bundle in the anterograde direction. METHODS AND RESULTS: 11 patients (7 male, 60 ± 12 years) with non-ischemic cardiomyopathy (left ventricular ejection fraction 37 ± 16 %) presenting with BBRT were successfully treated by ablation of the right bundle. Among them, 5 patients had atypical surface ECGs differing from a typical left bundle branch block during the VT...
January 5, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28041584/hemodynamics-of-his-bundle-pacing
#14
REVIEW
Luca Alberti, Paolo Pieragnoli, Giuseppe Ricciardi, Luigi Padeletti
This review will focus on the feasibility of long term His bundle pacing and its effects on left ventricle (LV) hemodynamics. Compared with right ventricular pacing, His bundle pacing results in a more physiological electro-mechanical activation that contributes to preserve LV function. Moreover some studies showed a similar effect to biventricular pacing in patients with heart failure and left bundle branch block. Recent observations indicate that His bundle pacing should be considered as an optimal site to pace right ventricle in patients who are candidates for cardiac resynchronization therapy...
January 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28034575/complete-right-bundle-branch-block-and-qrs-t-discordance-can-be-the-initial-clue-to-detect-s-icd-ineligibility
#15
Motomi Tachibana, Nobuhiro Nishii, Yoshimasa Morimoto, Satoshi Kawada, Akihito Miyoshi, Hiroyasu Sugiyama, Koji Nakagawa, Atsuyuki Watanabe, Kazufumi Nakamura, Hiroshi Morita, Hiroshi Ito
BACKGROUND: In order to minimize inappropriate shocks of subcutaneous implantable cardioverter-defibrillators (S-ICD), it is important to recognize who is suitable for S-ICD indication. This study aimed to clarify what types of cardiac disease are likely to fulfill the S-ICD screening criteria and ineligible factors for S-ICD in the standard 12-lead electrocardiogram (ECG). METHODS: A total of 348 patients with heart disease were enrolled. They were assessed by supine and standing ECG recording to simulate the 3 S-ICD sensing vectors and standard 12-lead ECG, simultaneously...
December 26, 2016: Journal of Cardiology
https://www.readbyqxmd.com/read/28034442/electrocardiographic-changes-induced-by-endurance-training-and-pubertal-development-in-male-children
#16
Flavio D'Ascenzi, Marco Solari, Francesca Anselmi, Francesca Valentini, Riccardo Barbati, Paola Palmitesta, Marta Focardi, Marco Bonifazi, Sergio Mondillo
Training-induced electrocardiographic changes are common in adult athletes. However, a few data are available on electrocardiogram (ECG) in preadolescent athletes and little is known about the potential changes induced by training on 12-lead electrocardiogram (ECG) at rest. Twelve-lead ECGs at rest and complete echocardiographic examinations were performed in 94 children (57 endurance athletes, 37 sedentary controls; mean age 10.8 ± 0.2 and 10.2 ± 0.2 years, respectively) at baseline and after 5 months of growth and training in athletes and of natural growth in controls...
December 3, 2016: American Journal of Cardiology
https://www.readbyqxmd.com/read/28017393/long-term-outcome-after-crt-in-the-presence-of-mechanical-dyssynchrony-seen-with-chronic-rv-pacing-or-intrinsic-lbbb
#17
Ivan Stankovic, Christian Prinz, Agnieszka Ciarka, Ana Maria Daraban, Yujing Mo, Marit Aarones, Mariola Szulik, Stefan Winter, Aleksandar N Neskovic, Tomasz Kukulski, Svend Aakhus, Rik Willems, Wolfgang Fehske, Martin Penicka, Lothar Faber, Jens-Uwe Voigt
OBJECTIVES: The aim of this study was to compare the volumetric response and the long-term survival after cardiac resynchronization therapy (CRT) in patients with intrinsic left bundle branch block (LBBB) versus chronic right ventricular pacing (RVP) with respect to the presence of mechanical dyssynchrony (MD). BACKGROUND: Chronic RVP induces an iatrogenic LBBB and asynchronous left ventricular contraction that is potentially reversible by upgrading to CRT. METHODS: A total of 914 patients eligible for CRT (117 with conventional pacemakers and 797 with intrinsic LBBB) were included in the study...
December 9, 2016: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/27996100/complications-with-the-micra-tps-pacemaker-system-persistent-complete-heart-block-and-late-capture-failure
#18
Niels Holm, Andreas Müller, Rainer Zbinden
A Medtronic MICRA transcatheter pacing system (Medtronic, Minneapolis, MN, USA) was implanted in an 86-year-old patient with sick sinus syndrome and left bundle branch block after transfemoral aortic valve implantation. During implantation she developed a persistent complete heart block due to manipulation with the large-bore delivery catheter. Two weeks later, acute pacemaker dysfunction occurred due to massive increase of pacing threshold and impedance without obvious pacemaker dislocation or myocardial perforation...
December 20, 2016: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/27989053/conventional-and-novel-predictors-of-permanent-pacemaker-after-tavi-in-atrial-fibrillation-patients
#19
Guilherme Portugal, Lino Patrício, Ana Abreu, Duarte Cacela, Mário Oliveira, Rui Ferreira
BACKGROUND: Atrial fibrillation (AF) is common in patients submitted for transcatheter aortic valve implantation (TAVI), and these patients are at higher risk of developing conduction system disturbances requiring pacemaker (PM) implantation. Conventional predictors for PM use in this population have limited applicability. It was hypothesized that a post-procedural heart rate reduction could gauge the degree of atrioventricular (AV) node injury, and that this would be a clinically useful predictor of a need for PM...
May 2016: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/27970062/tct-685-pre-existing-right-bundle-branch-block-increases-risk-of-death-after-transcatheter-aortic-valve-implantation-with-a-balloon-expandable-valve
#20
Yusuke Watanabe, Ken Kozuma, Hirofumi Hioki, Hideyuki Kawashima, Yugo Nara, Makoto Nakashima, Fukuko Nagura, Akihisa Kataoka, Shirai Shinichi, Norio Tada, Motoharu Araki, Kensuke Takagi, Futoshi Yamanaka, Masanori Yamamoto, Kentaro Hayashida
No abstract text is available yet for this article.
November 1, 2016: Journal of the American College of Cardiology
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