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Biventricular Pacing

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https://www.readbyqxmd.com/read/27920838/successful-resynchronization-by-permanent-his-bundle-pacing-in-a-patient-with-pacing-induced-cardiomyopathy
#1
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/27908173/pacemaker-and-icd-oversensing-induced-by-movements-near-the-mri-scanner-bore
#2
E Mattei, F Censi, G Calcagnini, R Falsaperla, E Genovese, A Napolitano, V Cannatà
PURPOSE: The effect of the movement near the MRI scanner bore for people with a pacemaker (PM) or an implantable cardioverter defibrillator (ICD) is experimentally evaluated and discussed. METHODS: The authors performed in vitro measurements on a saline-filled human-shaped phantom (male, 170 cm height), equipped first with an MR-conditional PM (bicameral configuration, DDD programming), then with an MR-conditional ICD (biventricular configuration, detection algorithms enable but shock delivery disable)...
December 2016: Medical Physics
https://www.readbyqxmd.com/read/27886925/the-role-of-atrioventricular-and-interventricular-optimization-for-cardiac-resynchronization-therapy
#3
REVIEW
Daniel B Cobb, Michael R Gold
Many patients with left ventricular systolic dysfunction may benefit from cardiac resynchronization therapy; however, approximately 30% of patients do not experience significant clinical improvement with this treatment. AV and VV delay optimization techniques have included echocardiography, device-based algorithms, and several other novel noninvasive techniques. Using these techniques to optimize device settings has been shown to improve hemodynamic function acutely; however, the long-term clinical benefit is limited...
January 2017: Heart Failure Clinics
https://www.readbyqxmd.com/read/27886922/atrial-fibrillation-during-cardiac-resynchronization-therapy
#4
REVIEW
Mariëlle Kloosterman, Alexander H Maass, Michiel Rienstra, Isabelle C Van Gelder
The landmark trials on cardiac resynchronization therapy (CRT) have focused on patients with sinus rhythm at inclusion. Little data are available on the efficacy of CRT in patients with atrial fibrillation (AF), while AF has a high prevalence (20-40%) among patients receiving CRT. This review focuses on the detrimental effect of AF on CRT response and discusses management of patients with AF during CRT. Uncertainty remains as to which thresholds of AF burden can lead to a reduced response to CRT and every effort should be made in trying to assess and guarantee successful biventricular pacing in patients with AF...
January 2017: Heart Failure Clinics
https://www.readbyqxmd.com/read/27885752/biventricular-paced-qrs-area-predicts-acute-hemodynamic-crt-response-better-than-qrs-duration-or-qrs-amplitudes
#5
Jan DE Pooter, Milad El Haddad, Marc DE Buyzere, Hernandez Alfonso Aranda, Richard Cornelussen, Berthold Stegemann, Christopher A Rinaldi, Maciej Sterlinski, Adam Sokal, Darrel P Francis, Luc Jordaens, Roland X Stroobandt, Frederic VAN Heuverswyn, Frank Timmermans
INTRODUCTION: Vectorcardiographic (VCG) QRS area of left bundle branch block (LBBB) predicts acute hemodynamic response in cardiac resynchronization therapy (CRT) patients. We hypothesized that changes in QRS area occurring with biventricular pacing (BV) might predict acute hemodynamic CRT response (AHR). METHODS AND RESULTS: VCGs of 624 BV paced electrocardiograms (25 LBBB patients with 35 different pacing configurations) were calculated according to Frank's orthogonal lead system...
November 25, 2016: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/27875131/non-invasive-personalisation-of-a-cardiac-electrophysiology-model-from-body-surface-potential-mapping
#6
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/27871987/body-surface-mapping-using-an-ecg-belt-to-characterize-electrical-heterogeneity-for-different-left-ventricular-pacing-sites-during-cardiac-resynchronization-relationship-with-acute-hemodynamic-improvement
#7
W Ben Johnson, Pierce J Vatterott, Michael A Peterson, Suveer Bagwe, R Dent Underwood, Alan J Bank, Ryan M Gage, Brian Ramza, Blair W Foreman, Vincent Splett, Tarek Haddad, Jeffrey M Gillberg, Subham Ghosh
BACKGROUND: Electrical heterogeneity (EH) during cardiac resynchronization therapy (CRT) may vary with different left ventricular (LV) pacing sites. OBJECTIVE: The study aims to evaluate the relationship between such changes and acute hemodynamic response (AHR). METHODS: Two EH metrics, standard deviation of activation times (SDAT) and mean left thorax activation time (LTAT), were computed from isochronal maps based on 53-electrode body-surface mapping (BSM) during baseline AAI pacing and biventricular pacing (BiVp) from different pacing sites in coronary veins in 40 CRT-indicated patients...
November 18, 2016: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/27865198/a-propensity-matched-case-control-study-comparing-efficacy-safety-and-costs-of-the-subcutaneous-vs-transvenous-implantable-cardioverter-defibrillator
#8
S Honarbakhsh, R Providencia, N Srinivasan, S Ahsan, M Lowe, E Rowland, R J Hunter, M Finlay, O Segal, M J Earley, A Chow, R J Schilling, P D Lambiase
BACKGROUND: Subcutaneous implantable cardioverter defibrillators (S-ICD) have become more widely available. However, comparisons with conventional transvenous ICDs (TV-ICD) are scarce. METHODS: We conducted a propensity matched case-control study including all patients that underwent S-ICD implantation over a five-year period in a single tertiary centre. Controls consisted of all TV-ICD implant patients over a contemporary time period excluding those with pacing indication, biventricular pacemakers and those with sustained monomorphic ventricular tachycardia requiring anti-tachycardia pacing...
November 7, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27863937/corrigendum-to-clinical-experience-of-contrast-venography-guided-axillary-vein-puncture-in-biventricular-pacing-int-j-cardiol-92-2003-55-58
#9
Ngai-Yin Chan, L Bing Liem, Ngai-Shing Mok, W Wong
No abstract text is available yet for this article.
November 15, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27861420/cardiac-resynchronization-therapy-maximizing-the-response-to-biventricular-pacing
#10
Chee Yuan Ng, E Kevin Heist
Cardiac resynchronization therapy (CRT) has become a mainstay therapy to improve clinical outcomes of patients with left ventricular systolic dysfunction and a wide QRS complex, in addition to guideline-directed medical therapy. As clinical experience with CRT continues to expand, the device and lead design, along with implantation techniques, have evolved as well. However, there is a significant proportion of patients with heart failure who do not have a favorable response to CRT. In this review article we will discuss how to maximize the response to CRT, which includes patient characteristics, device features, positioning of the lead, and device programming...
November 17, 2016: Cardiology in Review
https://www.readbyqxmd.com/read/27723623/-left-ventricular-dyssynchrony-in-prolonged-septal-stimulation
#11
Federico Ferrando-Castagnetto, Roberto Ricca-Mallada, Alejandro Vidal, Fabián Martínez, Rodolfo Ferrando
Pacemaker stimulation is associated with unpredictable severe cardiac events. We evaluated left ventricular mechanical dyssynchrony (LVMD) during prolonged septal right ventricular pacing. We performed 99mTc-MIBI gated-SPECT and phase analysis in 6 patients with pacemakers implanted at least one year before scintigraphy due to advanced atrioventricular block. Using V-Sync of Emory Cardiac Toolbox we obtained phase bandwidth (PBW) and standard deviation (PSD) from rest phase histogram. Clinical variables, QRS duration, rate and mode of pacing in septal right ventricle wall, chamber diameters, presence and extension of myocardial scar and ischemia and rest LVEF were recorded...
2016: Medicina
https://www.readbyqxmd.com/read/27687644/hemodynamic-effects-of-post-operative-cardiac-resynchronization-therapy-in-infants-following-repair-of-congenital-heart-disease-results-of-a-randomized-clinical-trial
#12
Mark K Friedberg, Steven M Schwartz, Hargen Zhang, Christine Chiu-Man, Cedric Manlhiot, Maria V Ilina, Glen Van Arsdell, Joel A Kirsh, Brian W McCrindle, Elizabeth A Stephenson
BACKGROUND: It is unknown whether continuous cardiac resynchronization therapy (CRT) can lead to sustained improvement in hemodynamics after surgery for congenital heart disease (CHD). OBJECTIVE: We investigated whether CRT improves cardiac index (CI) and blood pressure in infants after biventricular repair of CHD. METHODS: We randomized infants < 4-months of age after biventricular CHD surgery to standard care or standard care plus CRT for 48-hours or until extubation if sooner...
September 26, 2016: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/27591361/corrigendum-to-biventricular-paced-qrs-predictors-of-left-ventricular-lead-locations-in-relation-to-mortality-in-cardiac-resynchronization-therapy-j-electrocardiol-48-2015-226-235
#13
John M Fontaine, Ashwani Gupta, Sona M Franklin, Christina U Kang, Latrisha A Whigham
No abstract text is available yet for this article.
September 2016: Journal of Electrocardiology
https://www.readbyqxmd.com/read/27577107/cardiac-resynchronization-therapy-results-challenges-and-perspectives-for-the-future
#14
Marcus Ståhlberg, Frieder Braunschweig, Fredrik Gadler, Lars Mortensen, Lars H Lund, Cecilia Linde
Heart failure (HF) is considered as an epidemic and affects 2% of the population in the Western world. About 15-30% of patients with HF and reduced ejection fraction (HFrEF) also have prolonged QRS duration on the surface ECG, most commonly as a result of left-bundle branch block (LBBB). Increased QRS duration is a marker of a dyssynchronous activation, and subsequent contraction, pattern in the left ventricle (LV). When dyssynchrony is superimposed on the failing heart it further reduced systolic function and ultimately worsens outcome...
August 30, 2016: Scandinavian Cardiovascular Journal: SCJ
https://www.readbyqxmd.com/read/27553893/right-ventricular-versus-biventricular-pacing-for-heart-failure-and-atrioventricular-block
#15
Hiroko Beck, Anne B Curtis
The use of cardiac resynchronization therapy (CRT) is well accepted as an important option for the treatment of patients with systolic heart failure and prolonged QRS duration. CRT for patients with narrow QRS complexes is reserved for patients who are undergoing implantation of new or replacement pacemakers or implantable cardioverter defibrillators with an anticipated significant requirement for ventricular pacing. The Biventricular versus Right Ventricular Pacing in Heart Failure Patients with Atrioventricular Block (BLOCK HF) Trial examined the role of CRT in heart failure patients with atrioventricular block and demonstrated significantly better outcomes with CRT compared to right ventricular pacing...
August 23, 2016: Current Heart Failure Reports
https://www.readbyqxmd.com/read/27544599/a-simple-and-correctable-but-iatrogenic-cause-of-loss-of-biventricular-pacing-physician-awareness-integrity-failure
#16
Serkan Cay, Ozcan Ozeke, Firat Ozcan, Dursun Aras, Serkan Topaloglu
No abstract text is available yet for this article.
November 15, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27516461/survival-after-rate-responsive-programming-in-patients-with-cardiac-resynchronization-therapy-defibrillator-implants-is-associated-with-a-novel-parameter-the-heart-rate-score
#17
Brian Olshansky, Mark Richards, Arjun Sharma, Nicholas Wold, Paul Jones, David Perschbacher, Bruce L Wilkoff
BACKGROUND: Rate-responsive pacing (DDDR) versus nonrate-responsive pacing (DDD) has shown no survival benefit for patients undergoing cardiac resynchronization therapy defibrillator (CRT-D) implants. The heart rate score (HRSc), an indicator of heart rate variation, may predict survival. We hypothesized that high-risk HRSc CRT-D patients will have improved survival with DDDR versus DDD alone. METHODS AND RESULTS: All CRT-D patients in LATITUDE remote monitoring (2006-2011), programmed DDD, had HRSc calculated at first data upload after implant (median 1...
August 2016: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/27488751/late-deterioration-of-left-ventricular-function-after-right-ventricular-pacemaker-implantation
#18
Barbara Bellmann, Bogdan G Muntean, Tina Lin, Christopher Gemein, Kathrin Schmitz, Patrick Schauerte
OBJECTIVES: Right ventricular (RV) pacing induces a left bundle branch block pattern on ECG and may promote heart failure. Patients with dual chamber pacemakers (DCPs) who present with progressive reduction in left ventricular ejection fraction (LVEF) secondary to RV pacing are candidates for cardiac resynchronization therapy (CRT). This study analyzes whether upgrading DCP to CRT with the additional implantation of a left ventricular (LV) lead improves LV function in patients with reduced LVEF following DCP implantation...
September 2016: Anatolian Journal of Cardiology
https://www.readbyqxmd.com/read/27485565/use-of-a-novel-pacing-mode-to-achieve-biventricular-pacing-in-a-patient-with-recurrent-atrial-lead-dislodgement-after-crt-d-implantation
#19
Soumen Devidutta, Chennapragada Sridevi, Calambur Narasimhan
Cardiac resynchronization therapy device (CRT-P and CRT-D) implantation has increased tremendously with increasing operator experience, eligible patients and expansion of indications. Refinements in devices and algorithms now aid physicians to improve biventricular pacing and optimize CRT. We report a case in which an interesting device program was used to achieve biventricular pacing after repeated dislodgement of the atrial lead in a patient implanted with CRT-D.
January 2016: Indian Pacing and Electrophysiology Journal
https://www.readbyqxmd.com/read/27444509/long-term-impact-of-right-ventricular-pacing-on-left-ventricular-systolic-function-in-pacemaker-recipients-with-preserved-ejection-fraction-results-from-a-large-single-center-registry
#20
Micaela Ebert, Nikolaus Jander, Jan Minners, Thomas Blum, Michael Doering, Andreas Bollmann, Gerhard Hindricks, Thomas Arentz, Dietrich Kalusche, Sergio Richter
BACKGROUND: There is limited evidence of long-term impact of right ventricular pacing on left ventricular (LV) systolic function in pacemaker recipients with preserved LV ejection fraction (LVEF). The objective of the study was to evaluate the outcome and echocardiographic course of baseline preserved LVEF in a large cohort of pacemaker recipients with respect to pacing indication and degree of right ventricular pacing. METHODS AND RESULTS: We enrolled 991 patients (73±10 years, 54% male) with baseline normal (>55%) LVEF (n=791) or mildly reduced (41-55%) LVEF (n=200) who had paired echocardiographic data on LV systolic function recorded at implantation and last follow-up...
July 2016: Journal of the American Heart Association
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