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https://www.readbyqxmd.com/read/29333794/ablation-induced-change-in-the-course-of-fascicular-tachycardia
#1
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/29326870/lyme-carditis-with-isolated-left-bundle-branch-block-and-myocarditis-successfully-treated-with-oral-doxycycline
#2
Burke A Cunha, Maekal Elyasi, Prince Singh, Ismail Jimada
Lyme disease may present with a variety of cardiac manifestations ranging from first degree to third degree heart block. Cardiac involvement with Lyme disease may be asymptomatic, or symptomatic. Atrioventrical conduction abnormalities are the most common manifestation of Lyme carditis. Less common, are alternating right bundle branch block (RBBB) and left bundle branch block (LBBB). We present an interesting case of a young male whose main manifestation of Lyme carditis was isolated LBBB. He also had mild Lyme myocarditis...
2018: IDCases
https://www.readbyqxmd.com/read/29302023/a-case-of-type-i-and-ii-brugada-phenocopy-unmasked-in-a-patient-with-normal-baseline-electrocardiogram-ecg
#3
Marie H Bernardo, Satish R Tiyyagura
BACKGROUND Brugada pattern on electrocardiogram (ECG) is seen when there are at least 2 mm J-point elevation and 1 mm ST-segment elevation in two or more of the right precordial leads, with right bundle-branch block (RBBB)-like morphology. Elevation of a coved-type shape in leads V1 and V2 is consistent with type I Brugada pattern, whereas elevation of a saddle-back configuration distinguishes type II Brugada. If accompanied by life-threatening arrhythmias or sudden cardiac death, Brugada syndrome (BrS) is diagnosed...
January 5, 2018: American Journal of Case Reports
https://www.readbyqxmd.com/read/29289947/avoiding-s3-valve-over-sizing-by-deployment-balloon-over-filling-impact-on-rates-of-permanent-pacemaker-and-other-procedural-complications-during-tavr
#4
Tej Sheth, Madhu K Natarajan, Catherine Kreatsoulas, Richard Whitlock, Dominic Parry, Victor Chu, Amanda Smith, James L Velianou
OBJECTIVES: Patients with annular areas just above nominal S3 valve areas are at increased risk of over-sizing if a larger valve is implanted. We therefore evaluated the rate of permanent pacemaker (PPM) implantation associated with avoiding over-sizing by selective deployment balloon over-filling during transcatheter aortic valve replacement (TAVR) with the Sapien 3 (S3) valve. METHODS: We included consecutive patients treated with the S3 valve from January 2016 to May 2017...
January 2018: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/29260369/predictors-of-right-ventricular-pacing-and-pacemaker-dependence-in-transcatheter-aortic-valve-replacement-patients
#5
Esseim Sharma, Antony F Chu
PURPOSE: Transcatheter aortic valve replacement (TAVR) is an increasingly prevalent therapy in patients with severe symptomatic aortic stenosis. Conduction disturbances requiring permanent pacemaker (PPM) implantation are a known complication of TAVR. This study investigated the progression of cardiac conduction disease in the post-TAVR pacemaker population and identified predictors of post-TAVR right ventricular (RV) pacing dependence. METHODS: Prospectively collected echocardiographic, ECG, and PPM interrogation data of 262 consecutive patients who underwent TAVR with placement of a balloon-expandable valve at one institution from March 2012 to October 2016 were analyzed...
December 19, 2017: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/29226343/wide-qrs-tachycardia-with-rbbb-morphology-right-inferior-quadrant-axis-and-1-1-av-relation-what-is-the-mechanism
#6
Krishna Kumar Mohanan Nair, Narayanan Namboodiri, Sreevilasam Pushpangadhan Abhilash, Ajitkumar Valaparambil
No abstract text is available yet for this article.
December 11, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29202532/-premature-outflow-tract-ventricular-contraction-combined-with-complete-bundle-branch-block-the-characteristic-electrocardiographic-and-ablation-target-potential-features
#7
C Y Di, Z Wan, K Li, Y S Ding, W H Lin
Objective: To explore the characteristics of electrocardiogram(ECG) and target potential features of premature ventricular contraction (PVC) in patients with complete left/right bundle branch block (CL/RBBB) and compare with those without CL/RBBB. Methods: A retrospective analysis was done in 8 outflow tract PVC patients with CL/RBBB, who successfully underwent radiofrequency ablation from August 2009 to June 2017. According to the bundle branch block chamber, patients were divided into the complete right bundle branch block (CRBBB) group (n=4) and the complete left bundle branch block (CLBBB) group (n=4)...
December 1, 2017: Zhonghua Nei Ke za Zhi [Chinese Journal of Internal Medicine]
https://www.readbyqxmd.com/read/29197473/electrocardiographic-findings-in-patients-with-acute-coronary-syndrome-presenting-with-out-of-hospital-cardiac-arrest
#8
Bradley Sarak, Shaun G Goodman, David Brieger, Chris P Gale, Nigel S Tan, Andrzej Budaj, Graham C Wong, Thao Huynh, Mary K Tan, Jacob A Udell, Akshay Bagai, Keith A A Fox, Andrew T Yan
We sought to characterize presenting electrocardiographic findings in patients with acute coronary syndromes (ACSs) and out-of-hospital cardiac arrest (OHCA). In the Global Registry of Acute Coronary Events and Canadian ACS Registry I, we examined presenting and 24- to 48-hour follow-up ECGs (electrocardiogram) of ACS patients who survived to hospital admission, stratified by presentation with OHCA. We assessed the prevalence of ST-segment deviation and bundle branch blocks (assessed by an independent ECG core laboratory) and their association with in-hospital and 6-month mortality among those with OHCA...
November 3, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/29185614/permanent-pacing-after-transcatheter-aortic-valve-implantation-incidence-predictors-and-evolution-of-left-ventricular-function
#9
Cláudio Monteiro, Andres Di Leoni Ferrari, Paulo Ricardo Avancini Caramori, Luiz Antonio Ferreira Carvalho, Dimytri Alexandre de Alvim Siqueira, Luiz Eduardo Koenig São Thiago, Marco Perin, Valter C de Lima, Enio Guérios, Fabio Sandoli De Brito
BACKGROUND: Transcatheter aortic valve implantation (TAVI) is a well-established procedure; however, atrioventricular block requiring permanent pacemaker implantation (PPI) is a common complication. OBJECTIVES: To determine the incidence, predictors and clinical outcomes of PPI after TAVI, focusing on how PPI affects left ventricular ejection fraction (LVEF) after TAVI. METHODS: The Brazilian Multicenter TAVI Registry included 819 patients submitted to TAVI due to severe aortic stenosis from 22 centers from January/2008 to January/2015...
November 27, 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/29183713/right-bundle-branch-block-pattern-after-uncomplicated-right-ventricular-outflow-tract-pacing-in-a-patient-with-a-left-sided-superior-vena-cava-and-corrected-tetralogy-of-fallot
#10
Anunay Gupta, Neeraj Parakh, Rajnish Juneja
Usually an electrocardiogram after right ventricular (RV) pacing should yield left bundle branch block (LBBB) pattern. However, the presence of right bundle branch block (RBBB) pattern after pacemaker implantation should alert the physician to a malposition of lead. We report a case of 18-year-old female who underwent dual chamber pacemaker implantation and had RBBB pattern post implantation. Detailed evaluation revealed an uncomplicated right ventricular outflow tract pacing. The possible causes of this abnormal pattern after an uncomplicated RV pacing are also reviewed...
November 25, 2017: Indian Pacing and Electrophysiology Journal
https://www.readbyqxmd.com/read/29129561/alcohol-septal-ablation-for-hypertrophic-obstructive-cardiomyopathy-a-16-year-australian-single-centre-experience
#11
Jason Nogic, Youlin Koh, Marek Bak, Robert P Gooley, Ian T Meredith, Liam M McCormick
BACKGROUND: Alcohol septal ablation (ASA), is a well-established treatment for symptomatic hypertrophic obstructive cardiomyopathy (HOCM). We report the acute, short and long-term clinical and echocardiographic outcomes of our experience in a single Australian centre over 16 years. METHODS: We retrospectively analysed consecutive patients presenting to our centre for ASA between March 2000 and July 2016. Local databases were interrogated along with direct patient or physician contact occurred where required...
October 13, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/29121757/association-between-qrs-duration-on-prehospital-ecg-and-mortality-in-patients-with-suspected-stemi
#12
Rikke Hansen, Martin Frydland, Ole Kristian Møller-Helgestad, Matias Greve Lindholm, Lisette Okkels Jensen, Lene Holmvang, Hanne Berg Ravn, Jesper Kjærgaard, Christian Hassager, Jacob Eifer Møller
BACKGROUND: QRS duration has previously shown association with mortality in patients with acute myocardial infarction treated with thrombolytics, less is known in patients with suspected ST segment elevation myocardial infarction (STEMI) when assessing QRS duration on prehospital ECG. Thus, the objective was to investigate the prognostic effect of QRS duration on prehospital ECG and presence of classic left and right bundle branch block (LBBB/RBBB) for all-cause mortality in patients with suspected STEMI...
December 15, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/29064041/does-cardiac-resynchronization-therapy-benefit-patients-with-non-left-bundle-branch-block-prolonged-qrs-patterns
#13
REVIEW
Mark N Belkin, Gaurav A Upadhyay
PURPOSE OF REVIEW: We sought to assess the utility of CRT in patients with non-LBBB. RECENT FINDINGS: CRT has an established role as a device-based therapy for patients with HF with systolic dysfunction and intraventricular conduction disease, specifically LBBB. In modern practice, the use of CRT in non-LBBB patients remains controversial, with high rates of non-response for CRT in patients with RBBB, in particular. Recent studies have identified sub-populations of non-LBBB patients that respond to resynchronization, such as those with prolonged PR intervals (≥ 230 ms), with RBBB and concomitant left-sided delay and those with significant burden of right ventricular pacing...
October 24, 2017: Current Cardiology Reports
https://www.readbyqxmd.com/read/29037423/unique-ecg-presentations-and-clinical-management-of-a-symptomatic-lqt2-female-carrying-a-novel-de-novo-kcnh2-mutation
#14
Chunlin Yin, Ping Zhang, Jing Yang, Li Zhang
A 26-year-old woman, 12 days in postpartum, developed recurrent syncope and cardiac arrest. Her ECG revealed QT-prolongation associated with LQT2-specific T-U wave patterns, T wave alternans, long QT-dependent torsade de pointes (TdP) and ventricular fibrillation (VF). She also had intermittent LBBB (80bpm) on alternate beats and RBBB at sinus tachycardia (113bpm). Family genotyping revealed a novel de novo missense mutation G604C of KCNH2. Propranolol slowed heart rate and further prolonged QT interval (610ms) that caused TdP recurrence...
August 17, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/29021090/rbbb-tachycardia-with-north-west-axis-what-is-the-mechanism
#15
Krishna Kumar Mohanan Nair, Narayanan Namboodiri, Sreevilasam Pushpangadhan Abhilash, Ajitkumar Valaparambil
RBBB tachycardia with NW axis is considered to be VT unless proved otherwise. However underlying conduction system disease can produce electrocardiographic patterns suggestive of bundle branch block with extreme left axis which can cause difficulty in differentiating VT from SVT as in this case.
September 1, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28966313/analysis-of-morphological-characteristics-and-origins-of-idiopathic-premature-ventricular-contractions-under-a-12-lead-electrocardiogram-in-children-with-structurally-normal-hearts
#16
Jianbin Jiang, Yuee He, Huixian Qiu, Yuanhai Zhang, Maoping Chu, Yuechun Li, Qi Chen
Up to 40% of healthy children have premature ventricular complexes or contractions (PVCs) detected with 24-hour Holter monitoring. We aimed to investigate the morphological characteristics and origins of idiopathic PVCs under a 12-lead electrocardiogram in children with structurally normal hearts. All asymptomatic monomorphic PVC patients with structurally normal hearts under 18 years of age were included in this retrospective study. Characteristics of PVCs in lead V1 under a 12-lead electrocardiogram were classified as left bundle branch block (PVC-LBBB) or right bundle branch block (PVC-RBBB)...
October 21, 2017: International Heart Journal
https://www.readbyqxmd.com/read/28963581/pacemaker-implantation-after-tavi-predictors-of-av-block-persistence
#17
Luise Gaede, Won-Keun Kim, Christoph Liebetrau, Oliver Dörr, Johannes Sperzel, Johannes Blumenstein, Alexander Berkowitsch, Thomas Walther, Christian Hamm, Albrecht Elsässer, Holger Nef, Helge Möllmann
AIMS: Approximately every fifth patient undergoing transcatheter aortic valve implantation (TAVI) requires a permanent pacemaker (PPM) after the procedure. The aim of this study was to analyse predictors of atrioventricular block III° (AVBIII) persistence with concurrent PPM dependency after TAVI. METHODS AND RESULTS: Between 2010 and 2015 a total of 1198 patients underwent TAVI at the Kerckhoff Heart and Thorax Center, Germany. After exclusion of patients with prior PPM (n = 173) 14...
September 29, 2017: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/28938964/predictors-of-permanent-pacemaker-implantation-after-transfemoral-aortic-valve-implantation-with-the-lotus-valve
#18
Mirjam Keßler, Birgid Gonska, Julia Seeger, Wolfgang Rottbauer, Jochen Wöhrle
BACKGROUND: Permanent pacemaker implantation (PPMI) after transcatheter aortic valve implantation is of high clinical relevance, but PPMI rates differ widely between valve types. Although the Lotus valve can be repositioned, reported rates for PPMI are high. The predictors of PPMI after Lotus valve implantation have not been defined yet. METHODS: We analyzed the impact of preexisting conduction disturbances, depth of implantation, oversizing, and amount of calcification on PPMI in 216 patients with severe symptomatic aortic stenosis underdoing Lotus valve implantation...
October 2017: American Heart Journal
https://www.readbyqxmd.com/read/28899954/differentiating-the-qrs-morphology-of-posterior-fascicular-ventricular-tachycardia-from-right-bundle-branch-block-and-left-anterior-hemiblock-aberrancy
#19
MULTICENTER STUDY
Yoav Michowitz, Oholi Tovia-Brodie, Ishai Heusler, Avi Sabbag, Michael Rahkovich, Hezzy Shmueli, Aharon Glick, Bernard Belhassen
BACKGROUND: Left posterior fascicular ventricular tachycardia (LPF-VT) is frequently misdiagnosed as supraventricular tachycardia with aberrant right bundle branch block (RBBB) and left anterior hemiblock (LAHB). The purpose of the present study was to define the morphological ECG characteristics of LPF-VT and attempt to differentiate it from RBBB and LAHB aberrancy. METHODS AND RESULTS: A systematic Medline search was used to identify or locate ECG tracings from patients with LPF-VTs...
September 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/28886927/suitability-of-cardiac-resynchronisation-therapy-in-patients-with-fontan-circulation-and-congenitally-corrected-transposition-of-the-great-arteries
#20
P Demetriades, A Bell, C Gubran, H Marshall, J de Bono, L Hudsmith
BACKGROUND: Cardiac resynchronisation therapy (CRT) is a well-recognised treatment in systolic heart failure. There is limited evidence in congenital patients with univentricular hearts or systemic right ventricles. In 2014 PACES/HRS published a consensus statement recommending CRT if ventricular ejection fraction (EF)≤35%, QRS duration≥150ms (with RBBB in systemic RV), NYHA II-IV and ventricular dilatation. The incidence of patients meeting these criteria in whom CRT is possible is not known...
December 15, 2017: International Journal of Cardiology
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