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Biventricular Pacing

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https://www.readbyqxmd.com/read/28430960/triple-site-pacing-for-cardiac-resynchronization-in-permanent-atrial-fibrillation-follow-up-results-from-a-prospective-observational-study
#1
Pedro Marques, Miguel Nobre Menezes, Gustavo Lima da Silva, Tatiana Guimarães, Ana Bernardes, Nuno Cortez-Dias, Luis Carpinteiro, João de Sousa, Fausto J Pinto
Aims: Cardiac Resynchronization Therapy (CRT) is associated with a particularly high non-response rate in patients with atrial fibrillation (AF). We aimed to assess the effectiveness of triple-site (Tri-V) pacing CRT in this population. Methods and results: Prospective observational study of patients with permanent AF who underwent CRT implantation with an additional right ventricle lead in the outflow tract septal wall. After implantation, programming mode (Tri-V or biventricular pacing) was selected based on cardiac output determination...
April 19, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28430911/a-devices-game-of-thrones-cardiac-resynchronization-therapy-vs-pacemaker
#2
Sara Moura-Ferreira, Helena Gonçalves, Marco Oliveira, João Primo, Paulo Fonseca, José Ribeiro, Elisabeth Santos, Nuno Pelicano, Dinis Martins, Vasco Gama
Aims: Oversensing can interfere with biventricular pacing. Cardiac Resynchronization Therapy (CRT) output inhibition due to automatic brady mode change from a sensing to a pacing mode of a previously implanted pacemaker as it reached battery capacity depleted indicator has not been previously published in the medical literature. Methods and Results: We report the first case of CRT output inhibition in a pacemaker dependent patient due to electrical stimuli from a previously right-sided implanted pacemaker, after unaware reversion of OVO mode (O = no chambers paced; V = ventricular sensing; O = no response to sensing) to backup VVI (V = ventricular pacing; V = ventricular sensing; I = inhibitory response to sensing) when it reached the elective replacement interval...
April 18, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28416979/comparison-of-hemodynamic-effects-of-biventricular-versus-left-ventricular-only-pacing-in-patients-receiving-cardiac-resynchronization-therapy-a-before-after-clinical-trial
#3
Babak Faghfourian Md, Shahram Homayoonfar Md, Mahdi Rezvanjoo Md, Jalal Poorolajal Md PhD, Amir Hossein Emam Md
BACKGROUND: Biventricular (BiV) pacing is the most common mode of delivering cardiac resynchronization therapy (CRT). However, initial clinical studies have indicated that left ventricular (LV) pacing is not inferior to BiV pacing. This study was conducted to address whether LV only pacing can provide the same hemodynamic response as BiV pacing. METHODS: This before-after clinical trial was conducted at Ekbatan Hospital, from July 2012 to November 2014. Patients with a LV ejection fraction ≤35% and a QRS duration ≥0...
April 2017: Journal of Arrhythmia
https://www.readbyqxmd.com/read/28398485/transvenous-biventricular-pacing-in-double-inlet-left-ventricle-following-ventricular-septation-and-atrioventricular-valve-replacement
#4
Daiji Takeuchi, Daigo Yagishita, Keiko Toyohara, Tomomi Nishimura, In-Sam Park, Morio Shoda
No abstract text is available yet for this article.
April 7, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28345365/atrioventricular-nodal-ablation-in-patients-with-resynchronization-therapy-and-atrial-fibrillation-long-term-results
#5
Arleen Aune, Svein Færestrand, Per Ivar Hoff, Peter Schuster
OBJECTIVES: Atrioventricular nodal ablation (AVNA) is recommended for patients (pts) with cardiac resynchronization therapy (CRT) having atrial fibrillation (AF) and incomplete ventricular capture (Class IIa, level B). AVNA reduces mortality and improves the New York Heart Association (NYHA) functional class during intermediate term follow-up. The objectives were to study the long-term outcome regarding quality of life (QoL) and survival of our CRT pts after AVNA. DESIGN: 37 CRT-pts undergoing AVNA due to inadequate biventricular pacing were included in the study...
March 27, 2017: Scandinavian Cardiovascular Journal: SCJ
https://www.readbyqxmd.com/read/28340033/inappropriate-inhibition-of-biventricular-pacing-due-to-diaphragmatic-myopotentials-amplified-by-the-selectable-sensing-filter
#6
Kenichi Iijima, Naoko Ishida, Daisuke Izumi, Tohru Minamino
No abstract text is available yet for this article.
March 13, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28329164/large-animal-model-of-functional-tricuspid-regurgitation-in-pacing-induced-end-stage-heart-failure
#7
Marcin Malinowski, Alistair G Proudfoot, David Langholz, Lenora Eberhart, Michael Brown, Hans Schubert, Jeremy Wodarek, Tomasz A Timek
OBJECTIVES: Functional tricuspid regurgitation (FTR) is common in patients with advanced heart failure and frequently complicates left ventricular assist device implantation yet remains poorly understood. We set out to establish large animal model of FTR that could serve as a research platform to investigate the pathogenesis of FTR associated with end-stage heart failure. METHODS: : Through right thoracotomy, ten adult sheep underwent implantation of pacemaker with epicardial LV lead, five sonomicrometry crystals on the right ventricle, and left and right ventricular telemetry pressure sensors during a beating heart off-pump procedure...
February 21, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28315562/improvement-in-left-ventricular-intrinsic-dyssynchrony-with-cardiac-resynchronization-therapy
#8
Serdar Bozyel, Ayşen Ağaçdiken Ağır, Tayfun Şahin, Umut Çelikyurt, Müjdat Aktaş, Onur Argan, İrem Yılmaz, Kurtuluş Karaüzüm, Emir Derviş, Ahmet Vural, Dilek Ural
OBJECTIVE: Cardiac resynchronization therapy (CRT) has been shown to induce a structural and electrical remodeling; the data on whether left ventricle (LV) reverse remodeling is associated with restitution of intrinsic contraction pattern are unknown. In this study, we investigated the presence of improvement in left ventricular intrinsic dyssynchrony in patients with CRT. METHODS: A total of 45 CRT recipients were prospectively studied. Dyssynchrony indexes including interventricular mechanical delay (IVMD) and tissue Doppler velocity opposing-wall delay (OWD) as well as QRS duration on 12-lead surface electrocardiogram were recorded before CRT device implantation...
March 3, 2017: Anatolian Journal of Cardiology
https://www.readbyqxmd.com/read/28287212/-the-pacemaker-and-implantable-cardioverter-defibrillator-registry-of-the-italian-association-of-arrhythmology-and-cardiac-pacing-annual-report-2015
#9
Alessandro Proclemer, Massimo Zecchin, Antonio D'Onofrio, Giuseppe Boriani, Giovanni Luca Botto, Domenico Facchin, Luca Rebellato, Marco Ghidina, Giulia Bianco, Emanuela Bernardelli, Elsa Pucher, Dario Gregori
BACKGROUND: The pacemaker (PM) and implantable cardioverter-defibrillator (ICD) Registry of the Italian Association of Arrhythmology and Cardiac Pacing (AIAC) monitors the main epidemiological data in real-world practice. The survey for the 2015 activity collects information about demographics, clinical characteristics, main indications for PM/ICD therapy and device types from the Italian collaborating centers. METHODS: The Registry collects prospectively national PM and ICD implantation activity on the basis of European cards...
January 2017: Giornale Italiano di Cardiologia
https://www.readbyqxmd.com/read/28255076/beneficial-effect-of-renal-denervation-on-ventricular-premature-complex-induced-cardiomyopathy
#10
Shinya Yamada, Li-Wei Lo, Yu-Hui Chou, Wei-Lun Lin, Shih-Lin Chang, Yenn-Jiang Lin, Shin-Huei Liu, Wen-Han Cheng, Tsung-Ying Tsai, Shih-Ann Chen
BACKGROUND: Frequent ventricular premature complexes (VPCs) can lead to the development of dilated cardiomyopathy and sudden cardiac death. Renal artery sympathetic denervation (RDN) may protect the heart from remodeling. This study aimed to investigate the effect of frequent VPCs on structural and electrical properties and whether RDN can protect the heart from remodeling. METHODS AND RESULTS: Eighteen rabbits were randomized to control (n=6), VPC (n=6), and VPC-RDN (n=6) groups...
March 2, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28254126/economic-value-and-cost-effectiveness-of%C3%A2-cardiac-resynchronization-therapy-among-patients-with-mild-heart-failure-projections-from-the-reverse-long-term-follow-up
#11
Michael R Gold, Amie Padhiar, Stuart Mealing, Manpreet K Sidhu, Stelios I Tsintzos, William T Abraham
OBJECTIVES: This study investigated the cost effectiveness of early cardiac resynchronization therapy (CRT) implantation among patients with mild heart failure (HF). The differential cost effectiveness between CRT using a defibrillator (CRT-Ds) and CRT using a pacemaker (CRT-P) was also assessed. BACKGROUND: Cardiac resynchronization has been shown to be cost effective in New York Heart Association (NYHA) functional classes III/IV but is less studied in class II HF...
March 2017: JACC. Heart Failure
https://www.readbyqxmd.com/read/28219773/acute-effects-of-multi-site-biventricular-pacing-are-two-leads-really-better-than-one
#12
EDITORIAL
Ali Mehdirad, Charles Love
No abstract text is available yet for this article.
February 17, 2017: Journal of Cardiac Failure
https://www.readbyqxmd.com/read/28185354/eligibility-of-pacemaker-patients-for-subcutaneous-implantable-cardioverter-defibrillators
#13
James E Ip, Michael S Wu, Peter J Kennel, George Thomas, Christopher F Liu, Jim W Cheung, Steven M Markowitz, Bruce B Lerman
INTRODUCTION: The subcutaneous implantable cardioverter defibrillator (ICD) has emerged as a viable therapeutic option for patients who are deemed high risk for sudden cardiac death. Previous studies have shown that 7-15% of patients are not candidates for the S-ICD based on their intrinsic QRS/T-wave morphology. Presently, it is not known if the S-ICD can be considered as supplementary therapy in patients who are ventricularly paced. We sought to determine the proportion of ventricularly paced patients who would qualify for an S-ICD...
February 10, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28161770/posterior-ventricular-restoration-treatment-for-heart-failure-a-review-past-present-and-future-aspects
#14
REVIEW
Tadashi Isomura, Yasuhisa Fukada, Takuya Miyazaki, Minoru Yoshida, Akimasa Morisaki, Masahiro Endo
Congestive heart failure (CHF) is one of the major causes of death and occurs in more than 15,000,000 patients worldwide. The incidence is expected to increase in parallel with the aging population. Most current therapies for CHF are medications, and biventricular pacing implantation as appropriated by cardiologists, or surgical interventions. The heart transplantation for indicated patients is still gold standard surgery although the 10-year survival rate is approximately 60% based on the worldwide data. However, the cardiac transplantation remains epidemiologically insignificant because of donor pool limitations...
March 2017: General Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28131806/-effects-of-prolonged-endocardial-stimulation-on-left-ventricular-mechanical-synchrony-a-pilot-study-applying-gated-spect-phase-analysis-endocardial-stimulation-and-dyssynchrony
#15
Federico Ferrando-Castagnetto, Roberto Ricca-Mallada, Alejandro Vidal, Rodolfo Ferrando
OBJETIVE: To evaluate left ventricular mechanical dyssynchrony (LVMD) associated to prolonged right ventricular pacing through an innovative imaging technique, as a pilot study in Uruguay. METHODS: We performed 99mTc-MIBI gated-SPECT and phase analysis in 12 patients with pacemakers implanted at least one year before scintigraphy due to advanced atrioventricular block. Clinical data, QRS duration, rate, mode and site of pacing in right ventricle, chamber diameters, presence and extension of myocardial scar and ischemia and rest LVEF were recorded...
January 25, 2017: Archivos de Cardiología de México
https://www.readbyqxmd.com/read/28126497/acute-effects-of-multisite-biventricular-pacing-on-dyssynchrony-and-hemodynamics-in-canines-with-heart-failure
#16
Qiong Qiu, Li Yang, Jing-Ting Mai, Ying Yang, Yong Xie, Yang-Xin Chen, Jing-Feng Wang
BACKGROUND: Multisite biventricular pacing (MSP) has been proposed as an alternative strategy to improve the efficiency of conventional biventricular pacing (BVP), but its utility remains unclear. This study sought to investigate whether MSP induced better synchrony and hemodynamic effects in canines with heart failure. METHODS AND RESULTS: After 3 weeks' rapid right ventricular pacing, 7 canines were sutured with 4 left ventricular (LV) leads on the anterior, lateral, posterior, and apical walls and followed by MSP and BVP...
January 23, 2017: Journal of Cardiac Failure
https://www.readbyqxmd.com/read/28113292/non-invasive-personalisation-of-a-cardiac-electrophysiology-model-from-body-surface-potential-mapping
#17
Sophie Giffard-Roisin, Thomas Jackson, Lauren Fovargue, Jack Lee, Herve Delingette, Reza Razavi, Nicholas Ayache, Maxime Sermesant
Modelling cardiac electrophysiology (EP) can help understand pathologies and predict the response to therapies. Moreover, estimating patient-specific parameters of the EP model is crucial to obtain personalised information. The novelty of this paper is to use non-invasive data (body surface potential mapping, BSPM) in order to personalise the main parameters of a cardiac EP model for predicting different pacing conditions. First, an efficient forward model is proposed, coupling the Mitchell- Schaeffer transmembrane potential model with a current dipole formulation...
November 16, 2016: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28088306/ventricular-fibrillation-occurring-after-atrioventricular-node-ablation-despite-minimal-difference-between-pre-and-post-ablation-heart-rates
#18
F Squara, G Theodore, D Scarlatti, E Ferrari
We report the case of an 82-year-old man presenting with ventricular fibrillation (VF) occurring acutely after atrioventricular node (AVN) ablation. This patient had severe valvular cardiomyopathy, chronic atrial fibrillation (AF), and underwent prior to the AVN ablation a biventricular implantable cardiac defibrillator positioning. The VF was successfully cardioverted with one external electrical shock. What makes this presentation original is that the pre-ablation spontaneous heart rate in AF was slow (84 bpm), and that VF occurred after ablation despite a minimal heart rate drop of only 14 bpm...
February 2017: Annales de Cardiologie et D'angéiologie
https://www.readbyqxmd.com/read/28066827/optimized-left-ventricular-endocardial-stimulation%C3%A2-is-superior-to-optimized-epicardial%C3%A2-stimulation-in-ischemic-patients-with%C3%A2-poor-response-to-cardiac-resynchronization%C3%A2-therapy-a%C3%A2-combined-magnetic-resonance-imaging-electroanatomic%C3%A2-contact-mapping-and-hemodynamic
#19
Jonathan M Behar, Tom Jackson, Eoin Hyde, Simon Claridge, Jaswinder Gill, Julian Bostock, Manav Sohal, Bradley Porter, Mark O'Neill, Reza Razavi, Steve Niederer, Christopher Aldo Rinaldi
OBJECTIVES: The purpose of this study was to identify the optimal pacing site for the left ventricular (LV) lead in ischemic patients with poor response to cardiac resynchronization therapy (CRT). BACKGROUND: LV endocardial pacing may offer benefit over conventional CRT in ischemic patients. METHODS: We performed cardiac magnetic resonance, invasive electroanatomic mapping (EAM), and measured the acute hemodynamic response (AHR) in patients with existing CRT systems...
December 2016: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/28041584/hemodynamics-of-his-bundle-pacing
#20
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
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