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Pacemaker programming

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https://www.readbyqxmd.com/read/29309837/desynchronization-in-a-cardiac-resynchronization-device-induced-by-a-pacemaker-mediated-tachycardia-algorithm
#1
S Serge Barold, Nigel Lever, Fiona Riddell, Andreas Kucher
This report describes the occurrence of desynchronization in a patient with a cardiac resynchronization device programmed with an active pacemaker-mediated tachycardia algorithm based on AV delay modification. Desynchronization was precipitated by sinus tachycardia and the abrupt return of the prevailing AV delay that followed the periodic prolongation of the AV delay mandated by activity of the algorithm. Prevention of desynchronization in this setting requires programming a right ventricular upper rate interval longer than the sum of the programmed ventriculoatrial interval and the AV delay...
January 5, 2018: Indian Pacing and Electrophysiology Journal
https://www.readbyqxmd.com/read/29309556/statistics-on-the-use-of-cardiac-electronic-devices-and-interventional-electrophysiological-procedures-in-africa-from-2011-to-2016-report-of-the-pan-african-society-of-cardiology-pascar-cardiac-arrhythmias-and-pacing-task-forces
#2
Aimé Bonny, Marcus Ngantcha, Mohamed Jeilan, Emmy Okello, Bundhoo Kaviraj, Mohammed A Talle, George Nel, Eloi Marijon, Mahmoud U San, Zaheer Yousef, Kamilu M Karaye, Ibrahim A Touré, Mohamed A Awad, George Millogo, Jonas Kologo, Adama Kane, Romain Houndolo, Anastase Dzudié, Amam Mbakwem, Bongani M Mayosi, Ashley Chin
Aims: To provide comprehensive information on the access and use of cardiac implantable electronic devices (CIED) and catheter ablation procedures in Africa. Methods and results: The Pan-African Society of Cardiology (PASCAR) collected data on invasive management of cardiac arrhythmias from 2011 to 2016 from 31 African countries. A specific template was completed by physicians, and additional information obtained from industry. Information on health care systems, demographics, economics, procedure rates, and specific training programs was collected...
December 21, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/29259280/electrophysiology-of-the-rhythmic-defecation-program-in-nematode-heterorhabditis-megidis
#3
Victor P Kuznetsov, Georgy A Slivko-Koltchik, Dmitry A Voronov, Yuri V Panchin
The nervous system controls most rhythmic behaviors, with a remarkable exception. In Caenorhabditis elegans periodic defecation rhythm does not appear to involve the nervous system. Such oscillations are studied in detail with genetic and molecular biology tools. The small size of C. elegans cells impairs the use of standard electrophysiological methods. We studied a similar rhythmic pacemaker in the noticeably larger gut cells of Heterorhabditis megidis nematode. H. megidis defecation cycle is driven by a central pattern generator (CPG) associated with unusual all-or-none hyper-polarization "action potential"...
December 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29228149/outcome-after-transvascular-transcatheter-aortic-valve-implantation-in-2016
#4
Luise Gaede, Johannes Blumenstein, Christoph Liebetrau, Oliver Dörr, Won-Keun Kim, Holger Nef, Oliver Husser, Albrecht Elsässer, Christian W Hamm, Helge Möllmann
Aims: We analysed the number of procedures, complications, and in-hospital mortality rates of all patients undergoing transvascular transcatheter aortic valve implantation (TV-TAVI) in comparison to isolated surgical aortic valve replacement (iSAVR) from 2014 to 2016 in Germany. Methods and results: All aortic valve procedures performed in Germany are mandatorily registered in a quality control program. More than 15 000 TV-TAVI procedures were performed in 2016 in Germany...
December 8, 2017: European Heart Journal
https://www.readbyqxmd.com/read/29226818/rate-response-programming-tailored-to%C3%A2-the-force-frequency-relationship-improves-exercise-tolerance-in-chronic-heart-failure
#5
John Gierula, Maria F Paton, Judith E Lowry, Haqeel A Jamil, Rowenna Byrom, Michael Drozd, Jack O Garnham, Richard M Cubbon, David A Cairns, Mark T Kearney, Klaus K Witte
OBJECTIVES: This study sought to examine whether the heart rate (HR) at which the force-frequency relationship (FFR) slope peaks (critical HR) could be used to tailor HR response in chronic heart failure (CHF) patients with cardiac pacemakers and whether this favorably influences exercise capacity. BACKGROUND: CHF secondary to left ventricular (LV) systolic dysfunction is characterized by blunting of the positive relationship between HR and LV contractility known as the FFR...
November 27, 2017: JACC. Heart Failure
https://www.readbyqxmd.com/read/29177015/clinical-significance-of-atrial-high-rate-episodes-for-thromboembolic-events-in-japanese-population
#6
Hiroshi Kawakami, Takayuki Nagai, Makoto Saito, Shinji Inaba, Fumiyasu Seike, Kazuhisa Nishimura, Katsuji Inoue, Takafumi Okura, Takumi Sumimoto, Shigeki Uemura, Jitsuo Higaki, Shuntaro Ikeda
Objective: The clinical significance of atrial high-rate episodes (AHREs) detected by cardiac devices among patients with implantable pacemakers has recently emerged. However, the relationship between AHREs and ischaemic stroke and systemic embolism (SE) is not well understood in the Japanese population. Methods: This study included 343 patients with pacemakers capable of continuous atrial rhythm monitoring (167 males; mean age, 80±7 years). Atrial tachyarrhythmia detection was programmed to the nominal setting of each device, and AHRE was defined as any episode of sustained atrial tachyarrhythmia lasting for more than 6 min...
2017: Heart Asia
https://www.readbyqxmd.com/read/29100645/subclavian-axillary-access-for-self-expanding-transcatheter-aortic-valve-replacement-renders-equivalent-outcomes-as-transfemoral
#7
Thomas G Gleason, John T Schindler, Robert C Hagberg, G Michael Deeb, David H Adams, John V Conte, George L Zorn, G Chad Hughes, Jia Guo, Jeffrey J Popma, Michael J Reardon
BACKGROUND: Iliofemoral arterial disease can preclude transfemoral (TF) transcatheter aortic valve replacement (TF-TAVR). Transthoracic access by direct aortic or a transapical approach imparts a greater risk of complications and death than TF access. We hypothesized that subclavian/axillary arterial (SCA) access offers equivalent risks and outcomes as TF access. METHODS: The outcomes of 202 patients from the CoreValve (Medtronic, Minneapolis, MN) United States Pivotal Trial Program treated with SCA access were propensity matched with patients treated with TF access and analyzed...
November 1, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29073000/-optimized-lv-only-pacing-using-a-dual-chamber-pacemaker-as-a-cost-effective-alternative-to-crt
#8
Maneesh K Rai, Mukund A Prabhu, Abhishek Sharma, Ritesh Vekariya, Padmanabh Kamath, Narasimha Pai, Ramanath L Kamath
BACKGROUND: Cardiac Resynchronization therapy (CRT) remains largely under-used in developing countries owing to the high cost of therapy. In this pilot study, we explore 'optimized' Left Ventricle Only Pacing (LVOP) as a cost effective alternative to cardiac resynchronization therapy in selected patients with heart failure. HYPOTHESIS: In economically poorer patients with heart failure, left bundle branch block (LBBB) and intact AV node conduction, synchronization can be obtained using a dual chamber pacemaker (leads in right atrium and Left ventricle) with the help of 2D strain imaging...
May 2017: Indian Pacing and Electrophysiology Journal
https://www.readbyqxmd.com/read/29071403/specific-cell-re-programming-approaches-and-perspectives
#9
Frauke Hausburg, Julia Jeannine Jung, Robert David
Many disorders are manifested by dysfunction of key cell types or their disturbed integration in complex organs. Thereby, adult organ systems often bear restricted self-renewal potential and are incapable of achieving functional regeneration. This underlies the need for novel strategies in the field of cell (re-)programming-based regenerative medicine as well as for drug development in vitro. The regenerative field has been hampered by restricted availability of adult stem cells and the potentially hazardous features of pluripotent embryonic stem cells (ESCs) and induced pluripotent stem cells (iPSCs)...
October 26, 2017: Advances in Biochemical Engineering/biotechnology
https://www.readbyqxmd.com/read/29070994/nivolumab-induced-myocarditis-concomitant-with-myasthenia-gravis
#10
Yoko Fukasawa, Kazuya Sasaki, Maika Natsume, Makoto Nakashima, Shuji Ota, Kiyotaka Watanabe, Yoshihisa Takahashi, Fukuo Kondo, Ken Kozuma, Nobuhiko Seki
We report a 69-year-old female patient with advanced lung cancer who developed myocarditis concomitant with myasthenia gravis (MG), also known as "Herzmyasthenie," after 3 cycles of nivolumab administration. Her initial symptoms were general malaise and double vision. However, her myocarditis deteriorated rapidly the following day, necessitating a temporary pacemaker and noninvasive positive pressure ventilation in the intensive care unit. Immunohistochemical examination of a myocardial biopsy suggested an immune response on the basis of HLA associations...
September 2017: Case Reports in Oncology
https://www.readbyqxmd.com/read/29064614/accuracy-of-the-pacemaker-event-recorder-versus-holter-ecg-to-detect-both-symptomatic-and-asymptomatic-ventricular-arrhythmias
#11
Stela Maria Vitorino Sampaio, Neyle Moara Craveiro, Francisco Darrieux, Ítalo Martins de Oliveira, Mauricio Scanavacca, Denise Hachul
Although new pacemakers can register cardiac rhythm, few studies were performed evaluating their accuracy in diagnosing ventricular arrhythmias (VA). This study aimed to assess the correlation and agreement between the pacemaker's monitor and the ambulatory Holter in detecting VA. METHODS/RESULTS: We studied 129 patients with pacemakers, mean age 68.6±19.1 years, 54.8% female. Once Holter monitoring was connected, the pacemakers' event counters were reset and clocks of both systems were synchronized to register ECG simultaneously...
October 24, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28957879/perioperative-management-of-cardiac-rhythm-assist-devices-in-ambulatory-surgery-and-nonoperating-room-anesthesia
#12
Lovkesh Arora, Chakradhari Inampudi
PURPOSE OF REVIEW: Patients with cardiac implantable electronic devices (CIEDs) frequently undergo various surgical procedures and in the past perioperative management involved only placing magnet over the device. New programming features, development of implantable cardiac defibrillator (ICD), cardiac resynchronization therapy, and increasing complexity of the operating room equipment have led to new sources of electromagnetic interference (EMI). A comprehensive understanding of the CIED is necessary to provide a timely and optimal care to the patients...
December 2017: Current Opinion in Anaesthesiology
https://www.readbyqxmd.com/read/28956076/pacemaker-reprogramming-rarely-needed-after-device-replacement
#13
K Curila, J Smida, D Herman, P Osmancik, P Stros, J Zdarska, R Prochazkova, P Widimsky
BACKGROUND: Most outpatient follow-ups after pacemaker implantation do not involve changes in the device settings. Moreover, the need for pacemaker reprogramming declines with time after implantation. Currently, data on the need for changes in pacemaker set-up after replacement owing to battery depletion are lacking. The aim of this study was to determine the rates of pacemaker reprogramming in this patient group. METHODS: A retrospective analysis was performed using the files of 217 patients who had undergone pacemaker replacement between 2002 and 2005...
September 27, 2017: Herz
https://www.readbyqxmd.com/read/28916499/-re-programming-of-subtype-specific-cardiomyocytes
#14
REVIEW
Frauke Hausburg, Julia Jeannine Jung, Matti Hoch, Markus Wolfien, Arash Yavari, Christian Rimmbach, Robert David
Adult cardiomyocytes (CMs) possess a highly restricted intrinsic regenerative potential - a major barrier to the effective treatment of a range of chronic degenerative cardiac disorders characterized by cellular loss and/or irreversible dysfunction and which underlies the majority of deaths in developed countries. Both stem cell programming and direct cell reprogramming hold promise as novel, potentially curative approaches to address this therapeutic challenge. The advent of induced pluripotent stem cells (iPSCs) has introduced a second pluripotent stem cell source besides embryonic stem cells (ESCs), enabling even autologous cardiomyocyte production...
October 1, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/28862407/an-handbook-for-the-clinical-cardiologist-about-crt-icd-a-pratical-guide-about-how-to-survive-during-an-on-call-shift
#15
Fabiana Lucà, Emilia Biscottini, Laura Cipolletta, Marco Marini, Giorgio Caretta, Alberto Lavorgna, Fabio Vagnarelli, Stefania A DI Fusco, Vincenza Procaccini, Letizia Riva, Gabriele Vianello, Renata DE Maria, Achille Giardina, Michele M Gulizia
INTRODUCTION: Cardiac Resynchronization Therapies (CRTs) have been demonstrated to improve the clinical management and prognosis of selected patients with heart failure. EVIDENCE ACQUISITION: CRT devices include both CRT Pacemakers (CRT-P) and CRT defibrillators (CRT-D), with the latter being used to treat life-threatening ventricular arrhythmias. EVIDENCE SYNTHESIS: A significant advantage of CRTs is the ability to monitor several vital parameters which, thanks to advanced technology, may be remotely assessed...
August 31, 2017: Minerva Cardioangiologica
https://www.readbyqxmd.com/read/28736705/polymorphic-ventricular-tachycardia-due-to-change-in-pacemaker-programming
#16
Ihab Elsokkari, Amir Abdelwahab, Ratika Parkash
No abstract text is available yet for this article.
May 2017: HeartRhythm Case Reports
https://www.readbyqxmd.com/read/28733766/magnetic-resonance-imaging-in-patients-with-cardiac-implantable-electronic-devices-a-single-center-prospective-study
#17
Mrinal Yadava, Matthew Nugent, Angela Krebsbach, Jessica Minnier, Peter Jessel, Charles A Henrikson
PURPOSE: Cardiac implantable electronic devices (CIEDs) have traditionally been a contraindication for magnetic resonance imaging (MRI). Recent studies suggest that MRI can be conducted safely in select patients with pacemakers (PPMs) and implantable cardioverter defibrillators (ICDs). We sought to determine the safety of MRI in patients with CIEDs, using a protocol for patient selection and device programming. METHODS: This is a prospective, single-center study...
October 2017: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/28728260/-clinical-analysis-of-pacing-therapy-and-treatment-of-complications-during-follow-up-in-children
#18
P J Zhao, Y W Chen, F Li, Y Li, J P Yang, J J Wu
Objective: To analyze characteristics of permanent pacemaker implantation in children as well as treatment and prognosis of complications. Method: Clinical data of children who underwent endocardial or epicardial permanent pacemaker implantation between April 2000 and June 2016 in Shanghai Xinhua Hospital and Shanghai Children's Medical Center were analyzed retrospectively. These patients were discharged 5 days after implantation. Electrocardiogram, chest X ray, echocardiography and pacemaker programming were performed during follow-up...
July 2, 2017: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/28722339/structured-pain-management-reduces-patient-discomfort-after-catheter-ablation-and-rhythm-device-surgery
#19
M Dörschner, A Bollmann, B Dinov, S Richter, M Döring, A Arya, A Müssigbrodt, S Kircher, N Dagres, P Sommer, G Hindricks, K Bode
BACKGROUND: The goal was to test the effectiveness of a structured pain management programme after invasive electrophysiological interventions in cardiology including ablation of atrial fibrillation (AF) or ventricular tachycardia (VT) and implantation, or explantation, of pacemakers or implantable cardioverter defibrillators. METHODS: This was a prospective study with a pre-/post-design where a post-intervention group (116 consecutive patients) was compared to a pre-intervention group (102 consecutive patients) after implementation of a structured pain-management programme using the numeric rating scale (NRS 0-10) and classified as moderate-to-severe if NRS > 3...
November 2017: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/28707043/leadless-pacing-current-state-and-future-direction
#20
REVIEW
Matthias Merkel, Philipp Grotherr, Andrea Radzewitz, Claus Schmitt
Leadless pacing is now an established alternative to conventional pacing with subcutaneous pocket and transvenous lead for patients with class I or II single-chamber pacing indication. Available 12-month follow-up data shows a 48% fewer major complication rate in patients with Micra™ compared to a historical control group in a nonrandomized study [1]. There is one system with Food and Drug Administration (FDA) approval and two with the Communauté Européenne (CE) mark. The OPS code for the implantation is 8-83d...
December 2017: Cardiology and Therapy
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