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Implantable Cardiac Devices

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https://www.readbyqxmd.com/read/28718277/clinical-implications-of-long-term-ecg-monitoring-from-loop-recorder-to-devices-remote-control
#1
Andrea DI Cori, Raffaele DE Lucia
Long term ECG monitoring has become nowadays an indispensable technology for prevention, management and treatment of many cardiac issues. Today long term ECG monitoring is achievable through loop recorders (LR) and cardiac devices (CIED) like pacemaker (PM), implantable cardioverter-defibrillators (ICDs) and cardiac resynchronization therapy device-defibrillators (CRT- Ds), all of which associated with remote monitoring (RM). Targeted long term ECG monitoring Patients who have recurrent non documented episodes of palpitations, unexplained episodes of syncope, cryptogenic stroke or patients with a cardiomiopathy needing a risk stratification, may benefit from long term ECG monitoring...
July 18, 2017: Minerva Cardioangiologica
https://www.readbyqxmd.com/read/28717068/first-in-man-trial-of-sio2-inert-coated-bare-metal-stent-system-in-native-coronary-stenosis%C3%A3-the-axetis-fim-trial
#2
Taku Asano, Pannipa Suwannasom, Yuki Katagiri, Yosuke Miyazaki, Yohei Sotomi, Robin P Kraak, Joanna Wykrzykowska, Benno J Rensing, Jan J Piek, Mariann Gyöngyösi, Patrick W Serruys, Yoshinobu Onuma
BACKGROUND: A novel bare metal stent with an SiO2coating was developed to prevent excessive neointimal hyperplasia by inertization of the metallic stent surface. The efficacy of the device was demonstrated in a preclinical model. The aim of this first-in-man trial was to assess the safety and feasibility of the new device.Methods and Results:This prospective non-randomized single-arm trial was designed to enroll 35 patients with a de novo coronary lesion. Quantitative coronary angiography and optical coherence tomography (OCT) were performed at the baseline procedure and at the 6-month follow-up...
July 14, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28716973/incremental-benefit-of-cardiac-resynchronisation-therapy-with-versus-without-a-defibrillator
#3
Pieter Martens, Frederik H Verbrugge, Petra Nijst, Matthias Dupont, Dieter Nuyens, Hugo Van Herendael, Maximo Rivero-Ayerza, Wilson H Tang, Wilfried Mullens
OBJECTIVE: To determine the incremental value of implantable cardioverter defibrillators (ICD) in contemporary optimally treated patients with heart failure (HF) undergoing cardiac resynchronisation therapy (CRT). METHODS: Consecutive patients with HF undergoing CRT-pacemaker (CRT-P) or CRT-defibrillator (CRT-D) implantation in a single tertiary care centre between October 2008 and August 2015 were retrospectively evaluated. For patients with a primary prevention indication of the CRT-D, no benefit of the ICD was defined as absence of appropriate therapy (device analysis) or lethal ventricular tachyarrhythmias (mode of death analysis) during follow-up...
July 17, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28716703/bridge-to-surgery-best-practice-protocol-derived-from-early-clinical-experience-with-the-bridge-occlusion-balloon
#4
Bruce L Wilkoff, Charles Kennergren, Charles J Love, Steven P Kutalek, Laurence M Epstein, Roger Carrillo
A league of physicians at the Eleventh Annual Lead Management Symposium in Miami, Florida developed an expert opinion and federated agreement on a best practice protocol for Bridge™ Occlusion Balloon (Bridge) deployment for patients undergoing transvenous cardiac implantable electronic devices (CIED) lead extraction based on early clinical experience with the balloon. Injury to the superior vena cava (SVC) is a rare, but a serious complication of transvenous lead extraction. Bridge is designed to provide temporary endovascular occlusion of the SVC...
July 14, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28715316/virtual-humans-for-implantable-device-safety-assessment-in-mri-mitigating-magnetic-resonance-imaging-hazards-for-implanted-medical-devices
#5
James E Brown, Rui Qiang, Paul J Stadnik, Larry J Stotts, Jeffrey A Von Arx
Magnetic resonance imaging (MRI) is the preferred modality for soft tissue imaging because of its nonionizing radiation and lack of contrast agent. Due to interactions between the MR system and active implantable medical devices (AIMDs), patients with implants such as pacemakers are generally denied access to MRI, which presents a detriment to that population. It has been estimated that 50-75% of patients with a cardiac device were denied access to MRI scanning and, moreover, that 17% of pacemaker patients need an MRI within 12 months of implantation [1]...
July 2017: IEEE Pulse
https://www.readbyqxmd.com/read/28714039/current-role-of-echocardiography-in-cardiac-resynchronization-therapy
#6
REVIEW
Donato Mele, Matteo Bertini, Michele Malagù, Marianna Nardozza, Roberto Ferrari
Cardiac resynchronization therapy (CRT) is an established treatment for patients with heart failure and left ventricular systolic dysfunction. Patients are usually assessed by echocardiography, which provides a number of anatomical and functional information used for cardiac dyssynchrony assessment, prognostic stratification, identification of the optimal site of pacing in the left ventricle, optimization of the CRT device, and patient follow-up. Compared to other cardiac imaging techniques, echocardiography has the advantage to be non-invasive, repeatable, and safe, without exposure to ionizing radiation or nefrotoxic contrast...
July 17, 2017: Heart Failure Reviews
https://www.readbyqxmd.com/read/28711647/surgical-training-improves-performance-in-minimally-invasive-left-ventricular-assist-device-implantation-without-cardiopulmonary-bypass
#7
Lu-Feng Zhang, Hai-Bo Feng, Zhi-Guo Yu, Shi Jing, Feng Wan
OBJECTIVE: We introduced a live animal model for training of minimally invasive implantation of a continuous-flow left ventricular assist device (CF-LVAD) without cardiopulmonary bypass for operator's performance improvement. DESIGN: After watching a videotape of LVAD implantation on the beating heart through the cardiac apex, the surgical team performed implantation of LVADs into 5 pigs during 3 training sessions in a time series. The procedure success rate, operating time, and technical and global performances by self-evaluation and senior evaluation were compared among the sessions...
July 12, 2017: Journal of Surgical Education
https://www.readbyqxmd.com/read/28711453/a-roadmap-for-evaluating-the-use-and-value-of-durable-ventricular-assist-device-therapy
#8
EDITORIAL
Sarah T Ward, Qixing Liang, Francis D Pagani, Min Zhang, Robert L Kormos, Keith D Aaronson, Andrew D Althouse, Brahmajee K Nallamothu, Donald S Likosky
Heart failure is a disease characterized by profound human suffering with limitations in survival despite treatment with guideline-directed medical therapies. Patients with heart failure frequently progress to advanced stages and often require cardiac transplantation or implantation of left ventricular assist devices (LVADs) to extend survival and improve quality of life. As the number of suitable heart donors, number of experienced medical centers and patient comorbidities place restrictions on the feasibility of cardiac transplantation, implantation of LVADs has emerged as a more frequently applied treatment as either a bridge to transplantation or as permanent therapy...
June 23, 2017: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/28709930/particle-image-velocimetry-study-of-the-celiac-trunk-hemodynamic-induced-by-continuous-flow-left-ventricular-assist-device
#9
Francesco Scardulla, Diego Bellavia, Leonardo D'Acquisto, Giuseppe M Raffa, Salvatore Pasta
Whereas left ventricular assist device (LVAD) is the gold-standard therapy for patients with heart failure, gastrointestinal bleeding is one of the most common complications. LVAD implantation may remarkably impact aortic hemodynamics so that experimental and computational flow analyses can be used to study the disease mechanisms. Here we present an experimentally-calibrated computational model of the celiac trunk hemodynamic of a LVAD-supported patient who experienced bleeding after device implantation. Specifically, both particle image velocimetry (PIV) and echocardiography were used to measure and compare flow distributions in each branch of a phantom model of the patient abdominal aorta...
July 12, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28709666/novel-rotational-speed-modulation-system-used-with-venoarterial-extracorporeal-membrane-oxygenation
#10
Noritsugu Naito, Takashi Nishimura, Kei Iizuka, Yutaka Fujii, Yoshiaki Takewa, Akihide Umeki, Masahiko Ando, Minoru Ono, Eisuke Tatsumi
BACKGROUND: Femoral venoarterial extracorporeal membrane oxygenation (VA-ECMO) is widely used to maintain blood flow in patients with cardiogenic shock. However, retrograde blood flow increases left ventricular (LV) afterload during femoral VA-ECMO. Additional support by means of an intraaortic balloon pump (IABP) alleviates LV afterload but is associated with significant adverse events. We previously developed a system for rotational speed modulation in synchrony with the native cardiac cycle, for use with implantable continuous-flow LV assist devices...
July 11, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28708197/risk-stratification-personalised-model-for-prediction-of-life-threatening-ventricular-tachyarrhythmias-in-patients-with-chronic-heart-failure
#11
Alexander Vladimirovich Frolov, Tatjana Gennadjevna Vaikhanskaya, Olga Petrovna Melnikova, Anatoly Pavlovich Vorobiev, Ludmila Michajlovna Guel
BACKGROUND: The development of prognostic factors of life-threatening ventricular tachyarrhythmias (VTA) and sudden cardiac death (SCD) continues to maintain its priority and relevance in cardiology. The development of a method of personalised prognosis based on multifactorial analysis of the risk factors associated with life-threatening heart rhythm disturbances is considered a key research and clinical task. AIM: To design a prognostic and mathematical model to define personalised risk for life-threatening VTA in patients with chronic heart failure (CHF)...
2017: Kardiologia Polska
https://www.readbyqxmd.com/read/28707188/hemodynamic-benefits-of-counterpulsation-implantable-percutaneous-and-intraaortic-rotary-blood-pumps-an-in-silico-and-in-vitro-study
#12
Yu Wang, Steven C Koenig, Michael A Sobieski, Mark S Slaughter, Guruprasad A Giridharan
Mechanical circulatory support (MCS) devices have become a standard therapy for heart failure (HF) patients. MCS device designs may differ by level of support, inflow and/or outflow cannulation sites, and mechanism(s) of cardiac unloading and blood flow delivery. Investigation and direct comparison of hemodynamic parameters that help characterize performance of MCS devices has been limited. We quantified cardiac and vascular hemodynamic responses for different types of MCS devices. Continuous flow (CF) left ventricular (LV) assist devices (LVAD) with LV or left atrial (LA) inlet, counterpulsation devices, percutaneous CF LVAD, and intra-aortic rotary blood pumps (IARBP) were quantified using established computer simulation and mock flow loop models...
July 13, 2017: Cardiovascular Engineering and Technology
https://www.readbyqxmd.com/read/28706590/entirely-subcutaneous-defibrillator-and-complex-congenital-heart-disease-data-on-long-term-clinical-follow-up
#13
Paolo Ferrero, Hussam Ali, Palash Barman, Sara Foresti, Pierpaolo Lupo, Emilia D'Elia, Riccardo Cappato, Alan Graham Stuart
AIM: To describe the long-term follow-up of patients with complex congenital heart disease who underwent subcutaneous implantable cardiac defibrillator (S-ICD), focusing on local complications, appropriate and inappropriate shocks. METHODS: Patients with complex congenital heart disease underwent S-ICD implant in two centers with the conventional technique. Data at follow-up were retrieved from clinical notes and institutional database. RESULTS: Eight patients were implanted in two centres between 2010 and 2016...
June 26, 2017: World Journal of Cardiology
https://www.readbyqxmd.com/read/28705821/pacemakers-in-mri-for-the-neuroradiologist
#14
REVIEW
A W Korutz, A Obajuluwa, M S Lester, E N McComb, T A Hijaz, J D Collins, S Dandamudi, B P Knight, A J Nemeth
Cardiac implantable electronic devices are frequently encountered in clinical practice in patients being screened for MR imaging examinations. Traditionally, the presence of these devices has been considered a contraindication to undergoing MR imaging. Growing evidence suggests that most of these patients can safely undergo an MR imaging examination if certain conditions are met. This document will review the relevant cardiac implantable electronic devices encountered in practice today, the background physics/technical factors related to scanning these devices, the multidisciplinary screening protocol used at our institution for scanning patients with implantable cardiac devices, and our experience in safely performing these examinations since 2010...
July 13, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28704074/quantifying-the-relative-importance-to-patients-of-avoiding-symptoms-and-outcomes-of-heart-failure
#15
A Brett Hauber, Engels N Obi, Mark A Price, Diane Whalley, Chun-Lan Chang
OBJECTIVE: To evaluate heart failure (HF) patients' disease knowledge and preferences for avoiding different disease outcomes. METHODS: An online survey was administered to 400 individuals with a self-reported diagnosis of HF to elicit relative importance weights (RIWs) for avoiding 11 potential HF symptoms and outcomes using best-worst scaling. The survey also included questions about individuals' HF knowledge, and demographic and disease-experience characteristics...
July 13, 2017: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/28700261/orbital-implant-infection-by-corynebacterium-amycolatum
#16
J Alvaro Toribio, Teresa Marrodán, Isabel Fernández-Natal
Corynebacterium amycolatum is a saprophyte gram-positive bacillus of the skin flora. It has been linked to diverse infections in immunocompromised patients and also of different types of prostheses. However, to our knowledge, there are no reports on its ability to produce ocular infections or to grow over alloplastic materials for orbital surgery. We present a case of orbital implant exposure including pure isolation of C. amycolatum. The patient was referred for discharge in his socket. After removal of the artificial eye, a large area of implant exposure and signs of chronic infection were observed...
July 12, 2017: Orbit
https://www.readbyqxmd.com/read/28699977/pacemaker-implants-in-children-and-adolescents-with-chagas-disease-in-brazil-18-year-incidence
#17
Carolina Christianini Mizzaci, Thiago Gonçalves Schroder E Souza, Gabriel Pelegrineti Targueta, Ana Paula Frederico Tótora, Juan Carlos Pachón Mateos, José Carlos Pachon Mateos
Background: Chagas disease continues to be a serious public health problem, and accounts for 25-30% of the indications for cardiac stimulation in Brazil. Objective: To assess clinical and epidemiological characteristics of patients with Chagas disease, younger than 18 years, who had undergone pacemaker implantation in Brazil between 1994 and 2011, and its temporal trend. Methods: This was a cross-sectional analysis of data from the Brazilian Pacemaker Registry database...
June 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28696088/cardiac-lead-management-the-future-of-transvenous-lead-extraction-approaches-and-technologies
#18
Luca Segreti, Jean-Claude Deharo
INTRODUCTION: The implantation rate of Cardiac implantable Elecrtonical Devices has consistently increased in the last 20 years, so as related complication rates. According, devices infections and malfunctions required the development of appropriate strategies, including lead removal. Transvenous lead extraction (TLE) is the gold standard for lead removal. The increasing rate of CIED implantations and of CIED related complications highlight the importance of transvenous lead extraction (TLE)...
July 10, 2017: Minerva Cardioangiologica
https://www.readbyqxmd.com/read/28683998/biodegradable-vs-nonbiodegradable-cardiac-support-device-for-treating-ischemic-cardiomyopathy-in-a-canine-heart
#19
Mutsunori Kitahara, Shigeru Miyagawa, Satsuki Fukushima, Atsuhiro Saito, Ayumi Shintani, Toshiaki Akita, Yoshiki Sawa
Clinical studies of the efficacy of the nonbiodegradable CorCap device have shown inconsistent findings, at least in part, because of device-related impairment of diastolic cardiac function. We hypothesized that use of biodegradable material for the cardiac support device could contribute to an improvement in the diastolic function of the failing heart. Polyglycolic acid and polyethylene terephthalate were used to prepare biodegradable and nonbiodegradable cardiac support devices, respectively. Twelve-month-old beagles underwent anterior coronary artery ligation...
April 2017: Seminars in Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28683983/sutureless-sorin-perceval-aortic-valve-implantation
#20
Steffen Pfeiffer, Theodor Fischlein, Giuseppe Santarpino
The sutureless Perceval aortic valve (Sorin Group, Saluggia, Italy) is a device increasingly used in many European cardiac surgery centers. Since the first reports evaluating implantation feasibility and valve safety in humans in 2007, an increasing amount of data have become available, including premarketing clinical results and experience in particular conditions. Overall, excellent performances have been demonstrated in hemodynamic outcomes, safety, and versatility of use. However, several questions remain unanswered, especially regarding long-term durability, risk for endocarditis, and the need for postoperative pacemaker implantation...
April 2017: Seminars in Thoracic and Cardiovascular Surgery
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