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https://www.readbyqxmd.com/read/28041584/hemodynamics-of-his-bundle-pacing
#1
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/28032941/permanent-his-bundle-pacing-the-past-present-and-future
#2
REVIEW
Parikshit S Sharma, Kenneth A Ellenbogen, Richard G Trohman
Long-term right ventricular (RV) apical pacing has been associated with an increased risk of death, heart failure (HF) and atrial fibrillation (AF). Alternative sites for RV pacing have not proven to be superior to right ventricular apical pacing. Cardiac resynchronization therapy (CRT) using a biventricular (BiV) lead system is indicated for patients with a low left ventricular ejection fractions (LVEF) and QRS prolongation, but there remains about a 25-30% non-response rate. CRT has been less effective for non-LBBB conduction delay and with normal/low normal left ventricular (LV) function...
December 29, 2016: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28000309/utilization-of-permanent-his-bundle-pacing-for-management-of-pro-arrhythmia-related-to-bi-ventricular-pacing
#3
Aamir Sofi, Pugazhendhi Vijayaraman, S Serge Barold, Bengt Herweg
Biventricular pacing has occasionally been associated with ventricular pro-arrhythmia which at times can be refractory to conventional antiarrhythmic drug therapy and ablative intervention. Recently, permanent His bundle pacing has emerged as a reasonable alternative to right ventricular and biventricular pacing. In addition, by maintaining the physiologic pattern of ventricular electrical activation it is less likely to be arrhythmogenic. We here report the use of permanent His-bundle pacing to manage ventricular pro-arrhythmia that developed after initiation of biventricular pacing and was unresponsive to antiarrhythmic and ablative therapy...
December 20, 2016: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/27920838/successful-resynchronization-by-permanent-his-bundle-pacing-in-a-patient-with-pacing-induced-cardiomyopathy
#4
Yoji Iida, Tomoaki Izawa, Chikara Kobari, Toru Yatsuhashi, Nobuyuki Makishima
Right ventricular (RV) pacing has been reported to result in ventricular dyssynchrony, heart failure, and increased mortality. Pacing associated deterioration of left ventricular (LV) systolic function has been termed pacing-induced cardiomyopathy (PICM). While upgrading to biventricular pacing (BiVP) is an effective therapy for PICM, permanent His-bundle pacing (HBP) can be a physiological alternative to BiVP. We present a patient with PICM who responded dramatically to permanent HBP.
December 2016: Journal of Arrhythmia
https://www.readbyqxmd.com/read/27890282/selective-versus-non-selective-his-bundle-pacing-for-cardiac-resynchronization-therapy
#5
REVIEW
Gaurav A Upadhyay, Roderick Tung
Cardiac resynchronization therapy (CRT) has an established role in the device-based therapy for patients with systolic dysfunction and intraventricular conduction delay, particularly left bundle branch block (LBBB). Recently, His bundle pacing (HBP) has emerged as a viable alternative for resynchronization which can successfully narrow surface QRS and improve mechanical dyssynchrony. The role of selective (i.e., an isoelectric His-paced to QRS interval similar to native HV interval) versus non-selective capture (i...
October 18, 2016: Journal of Electrocardiology
https://www.readbyqxmd.com/read/27789001/trade-off-between-elimination-of-premature-ventricular-complexes-and-loss-of-synchronized-left-ventricular-pacing-improved-cardiac-function-in-a-patient-with-heart-failure
#6
Hideyuki Hasebe, Masataka Iida, Naoki Hatano, Toshiro Muramatsu
Synchronized left ventricular pacing (sLVP) via adaptive cardiac resynchronization therapy (aCRT) algorithm might enhance the efficacy of CRT. A 71-year-old female was admitted with the diagnosis of heart failure. Electrocardiograms revealed left bundle branch block with QRS width of 144 ms, and frequent premature ventricular complexes (PVCs). A CRT device was implanted, and sLVP via a CRT algorithm was provided. Frequent PVCs arising from the His-bundle suppressed effective sLVP percentage. Radiofrequency application at the His-bundle successfully eliminated the PVCs, but induced complete atrioventricular (AV) block, leading to loss of sLVP...
May 2016: Indian Pacing and Electrophysiology Journal
https://www.readbyqxmd.com/read/27778351/his-bundle-pacing-full-circle-and-maybe-a-bull-s-eye
#7
EDITORIAL
John D Fisher
No abstract text is available yet for this article.
December 2016: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/27778339/permanent-his-bundle-pacing-an-adolescent-with-promise
#8
EDITORIAL
James P Daubert
No abstract text is available yet for this article.
December 2016: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/27764240/feasibility-of-in-vivo-simulation-of-acute-hemodynamics-in-human-atrial-fibrillation
#9
Marek Sramko, Dan Wichterle, Josef Kautzner
This study evaluated hemodynamic feasibility and reproducibility of a new method for in vivo simulation of human atrial fibrillation (AF). The method was tested during sinus rhythm in 10 patients undergoing catheter ablation for AF. A simple electronic device was assembled that allowed triggering a cardiac stimulator by predefined series of RR intervals. Irregular RR interval sequences with a mean heart rate of 90/min and 130/min were obtained from ECG recordings of another patients with AF. Simultaneous atrioventricular pacing was delivered by catheters placed inside the coronary sinus and at the His bundle region...
2016: PloS One
https://www.readbyqxmd.com/read/27720211/history-of-his-bundle-pacing
#10
REVIEW
Gopi Dandamudi, Pugazhendhi Vijayaraman
Chronic right ventricular (RV) pacing has been shown over the years to exert detrimental physiological changes including increased risk for heart failure and atrial fibrillation. His bundle pacing offers the promise of physiological activation of the ventricular tissue, with the potential for reducing the detrimental effects of RV pacing. We describe His bundle pacing in a historical context and briefly highlight several clinical trials that have helped shape the landscape of permanent His bundle pacing.
January 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/27663607/permanent-his-bundle-pacing-in-patients-with-prosthetic-cardiac-valves
#11
Parikshit S Sharma, Faiz A Subzposh, Kenneth A Ellenbogen, Pugazhendhi Vijayaraman
BACKGROUND: Conduction disease is not uncommon after prosthetic valve (PV) surgery. The feasibility of His-bundle pacing (HBP) in this patient population is not well studied. OBJECTIVE: The purpose of this study was to report our experience with permanent HBP in patients undergoing pacemaker implantation after PV surgery. METHODS: Permanent HBP was attempted in patients with AV conduction disease after PV surgery referred for pacemaker implantation...
January 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/27591359/his-bundle-pacing-initial-experience-and-lessons-learned
#12
REVIEW
Amrish Deshmukh, Pramod Deshmukh
Direct His bundle pacing provides the most physiologic means of artificial pacing of the ventricles with a preserved His-Purkinje system and may play a role in patients with a diseased intrinsic conduction system. We describe our initial motivations and experience with permanent direct His bundle pacing and important lessons learned since that time.
September 2016: Journal of Electrocardiology
https://www.readbyqxmd.com/read/27543481/physiological-cardiac-pacing-current-status
#13
REVIEW
Asit Das, Dhiman Kahali
Adverse hemodynamics of right ventricular (RV) pacing is a well-known fact. It was believed to be the result of atrio-ventricular (AV) dyssynchrony and sequential pacing of the atrium and ventricle may solve these problems. However, despite maintenance of AV synchrony, the dual chamber pacemakers in different trials have failed to show its superiority over single chamber RV apical pacing in terms of death, progression of heart failure, and atrial fibrillation (AF). As a consequence, investigators searched for alternate pacing sites with a more physiological activation pattern and better hemodynamics...
July 2016: Indian Heart Journal
https://www.readbyqxmd.com/read/27539164/functional-aspects-of-his-bundle-physiology-and-pathophysiology-clinical-implications
#14
REVIEW
Benjamin J Scherlag, Ralph Lazzara
In this review we present evidence from many experimental studies which challenge the concept of predestination of His bundle fibers. Using both intra- and extracellular His bundle pacing in the context of atrio-ventricular block and the development of bundle branch blocks these experimental studies provide the underlying mechanisms for the recent clinical findings showing the benefits of permanent His bundle pacing.
January 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/27498079/synchronous-ventricular-pacing-with-direct-capture-of-the-atrioventricular-conduction-system-functional-anatomy-terminology-and-challenges
#15
Siva K Mulpuru, Yong-Mei Cha, Samuel J Asirvatham
Right ventricular apical pacing is associated with an increased incidence of heart failure, atrial fibrillation, and overall mortality. As a result, pacing the ventricles in a manner that closely mimics normal AV conduction with an intact His-Purkinje system has been explored. Recently, the sustainable benefits of selective His-bundle stimulation have been demonstrated and proposed as the preferred method of ventricular stimulation for appropriate patients. Ideally, conduction system pacing should be selective without myocardial capture, overcome distal bundle branch block when present, and not compromise tricuspid valve function...
November 2016: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/27485351/physiological-mechanisms-of-qrs-narrowing-in-bundle-branch-block-patients-undergoing-permanent-his-bundle-pacing
#16
REVIEW
Alexandra E Teng, Louis Massoud, Olujimi A Ajijola
His bundle pacing is increasingly used to avoid chronic right ventricular pacing, and electrically resynchronize ventricular activation by narrowing or normalizing the QRS interval in left and right bundle branch block. The mechanisms by which this occurs remain poorly understood. In this review, the proposed mechanisms and evidence supporting them are discussed. Also discussed are aspects of mechanisms that are not completely supported by the evidence. We also review the differences and physiological bases for direct vs...
September 2016: Journal of Electrocardiology
https://www.readbyqxmd.com/read/27478069/intermittent-capture-of-the-left-bundle-with-permanent-his-bundle-pacing-mechanistic-insights-and-implications-for-an-emerging-field
#17
Daniel J Friedman, Markus Hjorth, Albert Y Sun, Brett D Atwater
We present a case of a patient with elevated His lead capture thresholds and intermittent recruitment of the left bundle. The patient underwent a non-invasive electrophysiology study and was determined to have a left bundle branch block due to post-repolarization refractoriness. The nature of bundle branch block can have important implications for optimal patient selection and device programming in the emerging field of His bundle pacing. This article is protected by copyright. All rights reserved.
August 1, 2016: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/27469577/the-complexity-of-the-his-bundle-understanding-its-anatomy-and-physiology-through-the-lens-of-the-past-and-the-present
#18
REVIEW
Gopi Dandamudi, Pugazhendhi Vijayaraman
In this paper, we describe the anatomy and physiology of the His bundle and describe the mechanisms by which permanent His-bundle pacing can be accomplished.
December 2016: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/27457729/electrophysiological-observations-of-acute-his-bundle-injury-during-permanent-his-bundle-pacing
#19
Pugazhendhi Vijayaraman, Gopi Dandamudi, Kenneth A Ellenbogen
BACKGROUND: Permanent His bundle pacing (HBP) is a physiological alternative to right ventricular pacing (RVP). Catheter manipulation during HBP can cause trauma to the His bundle during implantation. We sought to determine acute and long-term incidence of His bundle (HB) injury with HBP. METHODS: Patients undergoing permanent HBP at Geisinger Wyoming Valley Medical Center from 2006 to 2014 formed the study group. Patients with pre-existing His-Purkinje disease (HPD) were excluded from the study...
September 2016: Journal of Electrocardiology
https://www.readbyqxmd.com/read/27457727/anatomical-approach-to-permanent-his-bundle-pacing-optimizing-his-bundle-capture
#20
REVIEW
Pugazhendhi Vijayaraman, Gopi Dandamudi
Permanent His bundle pacing is a physiological alternative to right ventricular pacing. In this article we describe our approach to His bundle pacing in patients with AV nodal and intra-Hisian conduction disease. It is essential for the implanters to understand the anatomic variations of the His bundle course and its effect on the type of His bundle pacing achieved. We describe several case examples to illustrate our anatomical approach to permanent His bundle pacing in this article.
September 2016: Journal of Electrocardiology
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