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Pacemaker programming

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https://www.readbyqxmd.com/read/29784482/role-of-surface-electrocardiograms-in-patients-with-cardiac-implantable-electronic-devices
#1
REVIEW
Emanuela T Locati, Giuseppe Bagliani, Alessio Testoni, Maurizio Lunati, Luigi Padeletti
Surface electrocardiograms, both resting 12-lead electrocardiographs and ambulatory electrocardiograph monitoring, play an essential role in establishing indications for cardiac implantable electronic devices (pacemakers, cardiac implantable defibrillators, and cardiac resynchronization therapies), and in the evaluation of patients already implanted. Current devices have prolonged memory capabilities (defined as Holter functions) and remote monitoring functions, to evaluate the electrical properties and the automatic detection of arrhythmias...
June 2018: Cardiac Electrophysiology Clinics
https://www.readbyqxmd.com/read/29721674/use-of-the-wearable-cardioverter-defibrillator-wcd-and-wcd-based-remote-rhythm-monitoring-in-a-real-life-patient-cohort
#2
Maura M Zylla, Henrike A K Hillmann, Tanja Proctor, Meinhard Kieser, Eberhard Scholz, Edgar Zitron, Hugo A Katus, Dierk Thomas
The wearable cardioverter-defibrillator (WCD) was introduced to provide protection from sudden cardiac death (SCD) in patients with transiently elevated risk or during ongoing risk stratification. Benefits and clinical characteristics of routine WCD use remain to be assessed in larger patient populations. This study aims to identify determinants of WCD compliance, therapies, and inappropriate alarms in a real-life cohort. A total of 106 cases (68.9% male) were included between 11/2010 and 04/2016. WCD therapies, automatically recorded arrhythmia episodes, inappropriate WCD alarms, patient compliance, and outcome after WCD prescription were analyzed...
May 2, 2018: Heart and Vessels
https://www.readbyqxmd.com/read/29693485/toward-adaptive-deep-brain-stimulation-in-parkinson-s-disease-a-review
#3
Ameer Mohammed, Richard Bayford, Andreas Demosthenous
Clinical deep brain stimulation (DBS) is now regarded as the therapeutic intervention of choice at the advanced stages of Parkinson's disease. However, some major challenges of DBS are stimulation induced side effects and limited pacemaker battery life. Side effects and shortening of pacemaker battery life are mainly as a result of continuous stimulation and poor stimulation focus. These drawbacks can be mitigated using adaptive DBS (aDBS) schemes. Side effects resulting from continuous stimulation can be reduced through adaptive control using closed-loop feedback, while those due to poor stimulation focus can be mitigated through spatial adaptation...
April 2018: Neurodegenerative Disease Management
https://www.readbyqxmd.com/read/29678782/early-feasibility-of-hypoglossal-nerve-upper-airway-stimulator-in-patients-with-cardiac-implantable-electronic-devices-and-continuous-positive-airway-pressure-intolerant-severe-obstructive-sleep-apnea
#4
Valay Parikh, Erica Thaler, Masanari Kato, M Boyd Gillespie, Shaun Nguyen, Kirk Withrow, David Calhoun, Ryan Soose, Damien Stevens, Suzanne Stevens, Chris Larsen, Madhu Reddy, Dhanunjaya Lakkireddy
BACKGROUND: Implantable hypoglossal nerve upper airway stimulation (HNS) is a novel, FDA approved strategy for management of moderate to severe obstructive sleep apnea(OSA) patients with continuous positive airway pressure (CPAP) therapy intolerance or failure. Due to proximity of Cardiac Implantable Electronic Devices (CIED) and this stimulator, interaction between these devices is theoretically possible. OBJECTIVE: The purpose of this study was to assess interactions between implantable hypoglossal nerve upper airway stimulator device and cardiac implantable electronic devices...
April 17, 2018: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/29628471/a-case-of-a-cardiac-resynchronization-therapy-defibrillator-exhibiting-a-lower-and-alternately-variable-basic-rate
#5
Keigo Iwazaki, Toshiya Kojima, Takahide Murasawa, Jun Yokota, Hikaru Tanimoto, Jun Matsuda, Nobuaki Fukuma, Takumi Matsubara, Yu Shimizu, Gaku Oguri, Eriko Hasumi, Hitoshi Kubo, Kyungho Chang, Katsuhito Fujiu, Issei Komuro
A cardiac resynchronization therapy defibrillator (CRT-D) (Medtronic Inc. Protecta XT) was implanted in a 67-year-old man who had cardiac sarcoidosis with extremely low cardiac function. He had ventricular tachycardia which was controlled by catheter ablation, medication and pacing. The programmed mode was DDI, lower rate was 90 beats/minute, paced AV delay was 150 ms, and the noncompetitive atrial pacing (NCAP) function was programmed as 300 ms.After his admission for pneumonia and heart failure, we changed his DDI mode to a DDD mode because he had atrial tachycardia, which led to inadequate bi-ventricular pacing...
April 6, 2018: International Heart Journal
https://www.readbyqxmd.com/read/29570208/sheep-can-be-used-as-animal-model-of-regional-myocardial-remodelling-and-controllable-work
#6
Jürgen Duchenne, Piet Claus, Efstathios D Pagourelias, Razvan O Mada, Joeri Van Puyvelde, Kathleen Vunckx, Eric Verbeken, Olivier Gheysens, Filip Rega, Jens-Uwe Voigt
BACKGROUND: A-V-sequential pacing has been shown to induce reversible conduction delay and subsequent asymmetric remodelling of the left ventricle (LV) in dogs and pigs. Both species have disadvantages in animal experiments. Therefore aim of this study focusses at developing a more feasible and easy-to-use animal model in sheep. METHODS: Dual-chamber pacing (DDD) pacemakers (right atrium + right ventricular free wall) were surgically implanted in 13 sheep. All animals underwent 8 weeks of chronic rapid pacing at 180 bpm...
March 23, 2018: Cardiology Journal
https://www.readbyqxmd.com/read/29536613/impact-of-pacemaker-mode-in-patients-with-atrioventricular-conduction-disturbance-after-trans-catheter-aortic-valve-implantation
#7
Masao Takahashi, Nicolas Badenco, Jacques Monteau, Estelle Gandjbakhch, Fabrice Extramiana, Marina Urena, Nicole Karam, Eloi Marijon, Vincent Algalarrondo, Emmanuel Teiger, Nicolas Lellouche
OBJECTIVES: This study aimed to assess the impact of pacemaker mode programming on clinical outcomes in patients with high-degree atrioventricular conduction disturbance (AVCD) after transcatheter aortic valve implantation (TAVI). BACKGROUND: Although high-degree AVCD after TAVI can receive pacemaker, recovery of the AVCD is often observed. Specific pacemaker algorithms (AAI-DDD mode switch) are available which favor spontaneous atrioventricular conduction. METHODS: Of 1,621 consecutive multi-center TAVI patients, 269 (16...
March 14, 2018: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/29526184/chronic-heart-failure
#8
Frank Edelmann, Christoph Knosalla, Klaus Mörike, Christiane Muth, Peggy Prien, Stefan Störk
BACKGROUND: Chronic heart failure (CHF) is the most common reason for hospital admissions in Germany. For the National Disease Management Guideline (NDMG) on CHF, a multidisciplinary expert panel revised the chapters on drug therapy, invasive therapy, and care coordination, following the methods of evidence-based medicine. METHODS: Recommendations are based on international guideline adaptations or systematic literature search. They were developed by a multidisciplinary expert panel, approved in a formal consensus procedure, and tested in open consultation, as specified by the requirements for S3 guidelines...
February 23, 2018: Deutsches Ärzteblatt International
https://www.readbyqxmd.com/read/29524476/effect-of-dual-chamber-minimal-ventricular-pacing-on-paroxysmal-atrial-fibrillation-incidence-in-myotonic-dystrophy-type-1-patients-a-prospective-randomized-single-blind-crossover-study
#9
Vincenzo Russo, Andrea Antonio Papa, Anna Rago, Carmine Ciardiello, Gerardo Nigro
BACKGROUND: Atrial fibrillation (AF) is a common finding in the myotonic dystrophy type 1 (DM1) population. Pacemakers (PMs) may facilitate the diagnosis and management of frequent subclinical asymptomatic AF episodes. OBJECTIVE: The purpose of this study was to evaluate the effect of minimal ventricular pacing on paroxysmal AF incidence in DM1 patients during a 24-month follow-up period. METHODS: We enrolled 70 DM1 patients (age 43.4 ± 13...
March 8, 2018: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/29508111/precision-of-automated-qrs-duration-measurement-in-patients-treated-with-cardiac-resynchronization-therapy
#10
Casper Lund-Andersen, Helen H Petersen, Christian Jøns, Berit T Philbert, Jacob Tfelt-Hansen, Lene T Skovgaard, Jesper H Svendsen
PURPOSE: Shortening of the QRS duration (QRSd) is often used to guide device optimization and reprogramming in patients with cardiac resynchronization therapy (CRT). Detecting the small changes expected during reprogramming requires that the QRSd can be measured with high precision, but this has never been studied in patients with CRT. In this study, we wanted to assess the precision of automated QRSd measurement in patients treated with CRT using two commonly available electrocardiographs...
June 2018: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/29496634/men1-tumor-suppressor-gene-is-required-for-long-term-memory-formation-in-an-aversive-operant-conditioning-model-of-lymnaea-stagnalis
#11
Nancy Dong, Anthony Senzel, Kathy Li, Tom Z Lu, Cong-Hui Guo, Mila Aleksic, Zhong-Ping Feng
Activity-dependent transcription factors critically coordinate the gene expression program underlying memory formation. The tumor suppressor gene, MEN1, encodes a ubiquitously expressed transcription regulator required for synaptogenesis and synaptic plasticity in invertebrate and vertebrate central neurons. In this study, we investigated the role of MEN1 in long-term memory (LTM) formation in an aversive operant conditioning paradigm in the freshwater pond snail Lymnaea stagnalis (L. stagnalis). We demonstrated that LTM formation is associated with an increased expression of MEN1 coinciding with an up-regulation of creb1 gene expression...
May 21, 2018: Neuroscience
https://www.readbyqxmd.com/read/29477310/cause-of-the-power-on-reset-phenomenon-other-than-electric-magnetic-interference-in-a-patient-with-a-pacemaker
#12
Kyoichiro Yazaki, Masahiro Watarai, Mitsuru Kahata, Asako Kumagai, Koji Inoue, Hiroshi Koganei, Kenji Enta, Masato Otsuka, Yasuhiro Ishii
A 67-year old male with a dual-chamber pacemaker visited for a regular check-up. An unfamiliar message emerged on the display just after placing the programmer wand. We could recognize that the pacemaker had already been in the safe back-up mode of DDI, and the programmer prompted a re-initialization request. We are so surprised because there was no indication of device malfunction the day before in daily monitoring and a 12-lead electrocardiogram revealed normally working in the DDD mode just before checking the device...
February 22, 2018: Indian Pacing and Electrophysiology Journal
https://www.readbyqxmd.com/read/29475931/the-influence-of-cardiac-pacemaker-programming-modes-on-exercise-capacity
#13
Bogdan Caloian, Adela Viviana Sitar-Taut, Gabriel Nicolae Gusetu, Dana Pop, Dumitru Tudor Zdrenghea
BACKGROUND/AIM: The cardiac pacing mode influences the atrioventricular synchronicity and the response of the heart rate to physical exercise. The aim of this study was to compare the influence of the most common pacemaker programming modes on exercise capacity. PATIENTS AND METHODS: Fifty-two pacemaker-wearing patients were clinically evaluated and submitted to an exercise stress test. RESULTS: Symptoms of heart failure were more frequently met in the single-chamber pacemaker group compared to the dual-chamber group...
March 2018: In Vivo
https://www.readbyqxmd.com/read/29470251/clinically-oriented-device-programming-in-bradycardia-patients-part-2-atrioventricular-blocks-and-neurally-mediated-syncope-proposals-from-aiac-italian-association-of-arrhythmology-and-cardiac-pacing
#14
Pietro Palmisano, Matteo Ziacchi, Mauro Biffi, Renato P Ricci, Maurizio Landolina, Massimo Zoni-Berisso, Eraldo Occhetta, Giampiero Maglia, Gianluca Botto, Luigi Padeletti, Giuseppe Boriani
: The purpose of this two-part consensus document is to provide specific suggestions (based on an extensive literature review) on appropriate pacemaker setting in relation to patients' clinical features. In part 2, criteria for pacemaker choice and programming in atrioventricular blocks and neurally mediate syncope are proposed. The atrioventricular blocks can be paroxysmal or persistent, isolated or associated with sinus node disease. Neurally mediated syncope can be related to carotid sinus syndrome or cardioinhibitory vasovagal syncope...
April 2018: Journal of Cardiovascular Medicine
https://www.readbyqxmd.com/read/29470250/clinically-oriented-device-programming-in-bradycardia-patients-part-1-sinus-node-disease-proposals-from-aiac-italian-association-of-arrhythmology-and-cardiac-pacing
#15
Matteo Ziacchi, Pietro Palmisano, Mauro Biffi, Renato P Ricci, Maurizio Landolina, Massimo Zoni-Berisso, Eraldo Occhetta, Giampiero Maglia, Gianluca Botto, Luigi Padeletti, Giuseppe Boriani
: Modern pacemakers have an increasing number of programable parameters and specific algorithms designed to optimize pacing therapy in relation to the individual characteristics of patients. When choosing the most appropriate pacemaker type and programing, the following variables must be taken into account: the type of bradyarrhythmia at the time of pacemaker implantation; the cardiac chamber requiring pacing, and the percentage of pacing actually needed to correct the rhythm disorder; the possible association of multiple rhythm disturbances and conduction diseases; the evolution of conduction disorders during follow-up...
April 2018: Journal of Cardiovascular Medicine
https://www.readbyqxmd.com/read/29458192/magnetic-resonance-imaging-safety-in-nonconditional-pacemaker-and-defibrillator-recipients-a-meta-analysis-and-systematic-review
#16
Anand D Shah, Mike A Morris, David S Hirsh, Megan Warnock, Yijian Huang, Mike Mollerus, Faisal M Merchant, Anshul M Patel, David B Delurgio, Adarsh U Patel, Michael H Hoskins, Mikhael F El Chami, Angel R Leon, Jonathan J Langberg, Michael S Lloyd
BACKGROUND: Recommendations regarding performance of magnetic resonance imaging (MRI) in non-MRI conditional pacemaker and defibrillator recipients are evolving. Previous studies have suggested low adverse event rates with MRI in nonconditional cardiac implantable electronic device (CIED) recipients, but low power limits optimal characterization of risk. OBJECTIVE: The purpose of this study was to perform a systematic review and meta-analysis to characterize the clinical risk associated with MRI in CIED recipients in order to improve power...
February 17, 2018: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/29372062/inferior-olivary-nucleus-degeneration-does-not-lessen-tremor-in-essential-tremor
#17
Elan D Louis, Daniel Trujillo Diaz, Sheng-Han Kuo, Shi-Rui Gan, Etty P Cortes, Jean Paul G Vonsattel, Phyllis L Faust
Background: In traditional models of essential tremor, the inferior olivary nucleus was posited to play a central role as the pacemaker for the tremor. However, recent data call this disease model into question. Case presentation: Our patient had progressive, long-standing, familial essential tremor. Upper limb tremor began at age 10 and worsened over time. It continued to worsen during the nine-year period he was enrolled in our brain donation program (age 85 - 94 years), during which time the tremor moved from the moderate to severe range on examination...
2018: Cerebellum & Ataxias
https://www.readbyqxmd.com/read/29309837/desynchronization-in-a-cardiac-resynchronization-device-induced-by-a-pacemaker-mediated-tachycardia-algorithm
#18
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
#19
Aimé Bonny, Marcus Ngantcha, Mohamed Jeilan, Emmy Okello, Bundhoo Kaviraj, Mohammed A Talle, George Nel, Eloi Marijon, Mahmoud U Sani, 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
#20
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
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