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Right bundle branch block

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https://www.readbyqxmd.com/read/28339570/frequency-of-different-electrocardiographic-abnormalities-in-a-large-cohort-of-spanish-workers
#1
Jorge Rodríguez-Capitán, Ana Fernández-Meseguer, José Manuel García-Pinilla, Eva Calvo-Bonacho, Manuel Jiménez-Navarro, Teresa García-Margallo, Fernando Cabrera-Bueno, Ignacio Echeverria-Lucotti, Juan José Gómez-Doblas, Eduardo De Teresa-Galván
Aims: Our aim was to describe the electrocardiographic findings of a large sample of Spanish workers from several different employment sectors. Methods and results: Between May 2008 and November 2010, 13 495 consecutive 12-lead resting electrocardiograms (ECGs) were obtained during health examinations of working adults aged 16-74 years in 5 cities in different regions of Spain. Of those, 13 179 ECGs suitable for interpretation were included in this study. All tracings were classified by the same cardiologist, according to the Minnesota Code criteria...
October 6, 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28318665/the-relation-between-local-repolarization-and-t-wave-morphology-in-heart-failure-patients
#2
Francesco Maffessanti, Joris Wanten, Mark Potse, Francois Regoli, Maria Luce Caputo, Giulio Conte, Daniel Sürder, Annekatrin Illner, Rolf Krause, Tiziano Moccetti, Angelo Auricchio, Frits W Prinzen
BACKGROUND: Both duration and morphology of the T-wave are regarded important parameters describing repolarization of the ventricles. Conventionally, T-wave concordance is explained by an inverse relation between the time of depolarization (TD) and repolarization (TR). Little is known about T-wave morphology and TD-TR relations in patients with heart failure. METHODS: Electro-anatomic maps were obtained in the left (LV) and right ventricle (RV) and in the coronary sinus (CS) in patients with heart failure with narrow (nQRS, n=8) and wide QRS complex with (LBBB, n=15) and without left bundle branch block (non-LBBB, n=7)...
February 22, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28298620/refractory-cardiogenic-shock-from-right-ventricular-infarction-successfully-managed-with-inhaled-epoprostenol
#3
Natalie Held, Nathaniel Little, Mori J Krantz, Brian L Stauffer
BACKGROUND Recognition and appropriate management of right ventricular (RV) infarction is essential, as RV injury increases mortality and substantially alters management during acute coronary syndrome. We report a case of RV infarction presenting with new right bundle branch block (RBBB), and therapeutic use of inhaled epoprostenol to reduce RV afterload and augment cardiac output during refractory cardiogenic shock. CASE REPORT A 53-year-old male presented to our institution in ventricular fibrillation with subsequent development of RBBB in the setting of proximal right coronary artery occlusion...
March 16, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28297125/a-new-formula-for-estimating-the-true-qt-interval-in-left-bundle-branch-block
#4
Binhao Wang, L I Zhang, Peixin Cong, Huimin Chu, Ying Liu, Jinqiu Liu, William Surkis, Yunlong Xia
INTRODUCTION: QT prolongation is an independent risk factor for cardiac mortality. Left bundle branch block (LBBB) is more common in patients as they age. Widening of the QRS in LBBB causes false QT prolongation and thus makes true QT assessment difficult. We aimed to develop a simple formula to achieve a good estimate of the QT interval in the presence of LBBB. METHODS AND RESULTS: To determine the effect of QRS duration on the QT interval, QRS and QT were measured in sinus rhythm (SR) and during right ventricular apical pacing in 62 patients (age 55 ± 11 years, 60% male) undergoing electrophysiology studies...
March 15, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28292752/fascicular-ventricular-tachycardia-originating-from-papillary-muscles-purkinje-network-involvement-in-the-reentrant-circuit
#5
Yuki Komatsu, Akihiko Nogami, Kenji Kurosaki, Itsuro Morishima, Keita Masuda, Tomoya Ozawa, Takashi Kaneshiro, Yuichi Hanaki, Yasutoshi Shinoda, Ahmed Karim Talib, Shinya Kowase, Yukio Sekiguchi, Kazutaka Aonuma
BACKGROUND: Verapamil-sensitive fascicular ventricular tachycardia (FVT) has been demonstrated to be a reentrant mechanism using the Purkinje network as a part of its reentrant circuit. Although the papillary muscles (PMs) are implicated in arrhythmogenic structure, reentrant FVT originating from the PMs has not been well defined. METHODS AND RESULTS: We studied 13 patients in whom FVT was successfully eliminated by ablation at the posterior PMs (n=8; PPM-FVT) and anterior PMs (n=5; APM-FVT)...
March 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/28290164/risk-factors-for-permanent-pacemaker-after-implantation-of-surgical-or-percutaneous-self-expanding-aortic-prostheses
#6
Emmanuel Villa, Alberto Clerici, Antonio Messina, Luca Testa, Francesco Bedogni, Andrea Moneta, Francesco Donatelli, Giovanni Troise
BACKGROUND: The use of transcatheter aortic valve implantation (TAVI) following the introduction of Nitinol autoexpandable devices has spread rapidly during recent years. In addition, cardiac surgery has been revolutionized due to the use of Nitinol-based sutureless prostheses for aortic valve replacement (AVR). During the same period, however, permanent pacemaker (PPM) implantation has emerged as a frequent complication. The study aim was to identify the risk factors of PPM following the implantation of a Nitinol self-expanding prosthesis (for AVR or TAVI)...
November 2016: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/28283746/predictors-for-permanent-pacemaker-implantation-in-patients-undergoing-transfemoral-aortic-valve-implantation-with-the-edwards-sapien-3-valve
#7
Birgid Gonska, Julia Seeger, Mirjam Keßler, Alexander von Keil, Wolfgang Rottbauer, Jochen Wöhrle
BACKGROUND: Predictors for the need of permanent pacemaker implantation (PPMI) in the context of transcatheter aortic valve implantation (TAVI) are not well defined yet. We evaluated the impact of conduction disturbances, calcium volume of the device landing zone, oversizing and implantation depth on PPMI after TAVI with the balloon-expandable Edwards Sapien 3 (ES3). METHODS AND RESULTS: 335 consecutive patients undergoing transfemoral TAVI with the ES3 for the treatment of symptomatic severe aortic stenosis were included (clinicaltrials NCT02162069)...
March 10, 2017: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/28258731/hypotension-and-left-bundle-branch-block
#8
Mazen M Kawji, David Luke Glancy
A 69-year-old man with chronic kidney disease and no chest pain had the new onset of hypotension. An electrocardiogram revealed left bundle branch block and inferior ST-segment elevation concordant with the QRS complexes in leads II and aVF, a pattern diagnostic of acute inferior myocardial infarction. Coronary arteriography showed triple vessel disease with complete occlusion of the right. He was treated with an intraaortic balloon pump and percutaneous coronary intervention, followed by coronary artery bypass operation at a nearby hospital...
January 25, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28258051/transcatheter-heart-valve-selection-and-permanent-pacemaker-implantation-in-patients-with-pre-existent-right-bundle-branch-block
#9
Lennart van Gils, Didier Tchetche, Thibault Lhermusier, Masieh Abawi, Nicolas Dumonteil, Ramón Rodriguez Olivares, Javier Molina-Martin de Nicolas, Pieter R Stella, Didier Carrié, Peter P De Jaegere, Nicolas M Van Mieghem
BACKGROUND: Right bundle branch block is an established predictor for new conduction disturbances and need for a permanent pacemaker (PPM) after transcatheter aortic valve replacement. The aim of the study was to evaluate the absolute rates of transcatheter aortic valve replacement related PPM implantations in patients with pre-existent right bundle branch block and categorize for different transcatheter heart valves. METHODS AND RESULTS: We pooled data on 306 transcatheter aortic valve replacement patients from 4 high-volume centers in Europe and selected those with right bundle branch block at baseline without a previously implanted PPM...
March 3, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28257570/pattern-breaks-on-the-surface-ecg-can-we-anticipate-a-long-day-ahead
#10
EDITORIAL
Jason S Bradfield, Kalyanam Shivkumar
In 1988, Miller and colleagues(1) reported their experience with the correlation between 12-lead electrocardiograms (ECG) and endocardial sites of ventricular tachycardia (VT) origin in patients with coronary artery disease. In this series of 182 VTs in 108 patients, they noted numerous precordial transition patterns, one of which was a "regression/growth" pattern, with loss of R waves in the mid- precordial leads and then "regrowth" in the left precordial leads during right bundle branch block morphology VT...
March 3, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28238566/association-between-right-ventricular-systolic-function-and-electromechanical-delay-in-patients-with-right-bundle-branch-block
#11
Dong Hyun Park, Kyoung Im Cho, Yoon Kyung Kim, Bong Joon Kim, Ga In You, Sung Il Im, Hyun Su Kim, Jeong Ho Heo
BACKGROUND: Elevated right ventricle (RV) pressure and/or volume can place stress on the right bundle branch block (RBBB) and its associated Purkinje network, which can affect its electrical properties, resulting in conduction delay or block. We hypothesized that prolonged R' wave duration in lead V1 would extend the later portion of the QRS complex and can act as an indicator of reduced RV function in patients with RBBB. METHOD: Kosin University Gospel Hospital echocardiography and electrocardiography (ECG) database was reviewed to identify patients with complete RBBB between 2013 and 2015...
February 23, 2017: Journal of Cardiology
https://www.readbyqxmd.com/read/28217615/type-1-brugada-pattern-electrocardiogram-induced-by-hypokalemia
#12
Thein Swe, Muhammad Hassan Dogar
Coved-type ST-segment elevation in the right precordial leads are the characteristics of Brugada syndrome, an inherited arrhythmogenic ion channel disease, which could lead to ventricular arrhythmia and sudden death. Hypokalemia alone may induce Type 1 Brugada pattern electrocardiogram (EKG), and the association has rarely been reported. We describe a patient with hypokalemia 2.9 mmol/L and the appearance of new right bundle branch block pattern with coved ST-segment elevations with inverted T wave in leads V1-V2...
July 2016: Journal of Family Medicine and Primary Care
https://www.readbyqxmd.com/read/28217234/inappropriate-shocks-from-a-subcutaneous-implantable-cardioverter-defibrillator-due-to-oversensing-during-periods-of-rate-related-bundle-branch-block
#13
Maria João Sousa, Tim Betts
The subcutaneous implantable cardioverter-defibrillator (S-ICD) is a novel technology with proven efficacy in sudden cardiac death prevention; however, there is a lack of long-term safety data. We describe the case of a 55-year-old female patient implanted with an S-ICD due to idiopathic ventricular fibrillation, who subsequently presented with inappropriate shocks leading to ventricular fibrillation that was successfully terminated by another shock. Inappropriate shocks were due to intermittent T wave oversensing during periods of rate-dependent right bundle branch block...
February 2017: Journal of Arrhythmia
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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