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Leadless ICD

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https://www.readbyqxmd.com/read/27799257/defibrillators-selecting-the-right-device-for-the-right-patient
#1
Sana M Al-Khatib, Paul Friedman, Kenneth A Ellenbogen
Advances in the field of defibrillation have brought to practice different types of devices that include the transvenous implantable cardioverter-defibrillator (ICD) with or without cardiac resynchronization therapy, the subcutaneous ICD (S-ICD), and the wearable cardioverter-defibrillator. To ensure optimal use of these devices and to achieve best patient outcomes, clinicians need to understand how these devices work, learn the characteristics of patients who qualify them for one type of device versus another, and recognize the remaining gaps in knowledge surrounding these devices...
November 1, 2016: Circulation
https://www.readbyqxmd.com/read/27588153/new-horizon-for-infection-prevention-technology-and-implantable-device
#2
REVIEW
Yusuke Kondo, Marehiko Ueda, Yoshio Kobayashi, Joerg O Schwab
There has been a significant increase in the number of patients receiving cardiovascular implantable electronic devices (CIED) over the last two decades. CIED infection represents a serious complication after CIED implantation and is associated with significant morbidity and mortality. Recently, newly advanced technologies have offered attractive and suitable therapeutic alternatives. Notably, the leadless pacemaker and anti-bacterial envelope decrease the potential risk of CIED infection and the resulting mortality, when it does occur...
August 2016: Journal of Arrhythmia
https://www.readbyqxmd.com/read/26941338/combined-leadless-pacemaker-and-subcutaneous-implantable-defibrillator-therapy-feasibility-safety-and-performance
#3
F V Y Tjong, T F Brouwer, L Smeding, K M Kooiman, J R de Groot, D Ligon, R Sanghera, M J Schalij, A A M Wilde, R E Knops
AIMS: The subcutaneous implantable cardioverter-defibrillator (S-ICD) and leadless pacemaker (LP) are evolving technologies that do not require intracardiac leads. However, interactions between these two devices are unexplored. We investigated the feasibility, safety, and performance of combined LP and S-ICD therapy, considering (i) simultaneous device-programmer communication, (ii) S-ICD rhythm discrimination during LP communication and pacing, and (iii) post-shock LP performance. METHODS AND RESULTS: The study consists of two parts...
March 3, 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/26860611/the-emerging-roles-of-leadless-devices
#4
Jeffrey Arkles, Joshua Cooper
The role of leadless devices to treat cardiac rhythm disorders and heart failure is emerging. Subcutaneous defibrillator (S-ICD) and leadless pacemakers were developed to ameliorate the risks associated with chronic transvenous leads. Potential benefits of leadless pacemakers and S-ICD include more favorable infection profile, less risk of venous stenosis or occlusion, and less risk of tricuspid valve insufficiency. Novel implantable leadless monitors for heart failure represent a novel diagnostic tool that can guide therapy for CHF...
February 2016: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/26842114/subclinical-atrial-fibrillation-and-stroke-insights-from-continuous-monitoring-by-implanted-cardiac-electronic-devices
#5
REVIEW
Chu-Pak Lau, Chung-Wah Siu, Kai-Hang Yiu, Kathy Lai-Fun Lee, Yap-Hang Chan, Hung-Fat Tse
Nearly one out of five strokes is associated with atrial fibrillation (AF). Atrial fibrillation is often intermittent and asymptomatic. Detection of AF after cryptogenic stroke will likely change therapy from antiplatelet to oral anticoagulation agents for secondary stroke prevention. A critical step is to convert 'covert' AF into electrocardiogram documented AF. External rhythm recording devices have registered a high incidence of AF to occur after a cryptogenic stroke, but are limited by short duration of continuous recordings...
October 2015: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/26835112/the-entirely-subcutaneous-defibrillator-a-new-generation-and-future-expectations
#6
Hussam Ali, Pierpaolo Lupo, Riccardo Cappato
Although conventional implantable cardioverter-defibrillators (ICDs) have proved effective in the prevention of sudden cardiac death (SCD), they still appear to be limited by non-trivial acute and long-term complications. The recent advent of an entirely subcutaneous ICD (S-ICD) represents a further step in the evolution of defibrillation technology towards a less-invasive approach. This review highlights some historical and current issues concerning the S-ICD that may offer a viable therapeutic option in selected patients at high risk of SCD and in whom pacing is not required...
August 2015: Arrhythmia & Electrophysiology Review
https://www.readbyqxmd.com/read/26519678/subcutaneous-implantable-cardioverter-defibrillators-in-children-young-adults-and-patients-with-congenital-heart-disease
#7
REVIEW
Pierre Bordachar, Christelle Marquié, Thomas Pospiech, Jean-Luc Pasquié, Zakaria Jalal, Michel Haissaguerre, Jean-Benoit Thambo
The demonstration of severe complications in patients implanted with a transvenous implantable cardioverter defibrillator (ICD) has led to the development of devices equipped with a subcutaneous lead. This new technique offers numerous advantages but also certain disadvantages. Various studies or anecdotal clinical cases have specifically been conducted with this subcutaneous defibrillation system in children and/or patients with congenital heart disease. Results of these studies suggest: 1) a high feasibility despite being limited by a selection process that excludes patients requiring permanent pacing and patients declared ineligible during pre-screening; 2) good efficacy of electrical shocks in reducing induced or spontaneous ventricular arrhythmias; 3) in this specific subset of patients, 2 types of complications have been particularly described: a risk of device exteriorization and infection, and a large number of inappropriate therapies primarily related to T-wave oversensing...
January 15, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/26427291/-future-of-implantable-electrical-cardiac-devices
#8
REVIEW
Jean-Claude Daubert, Albin Behaghel, Christophe Leclercq, Philippe Mabo
Major improvements in implantable electrical cardiac devices have been made during the last two decades, notably with the advent of automatic internal defibrillation (ICD) to prevent sudden arrhythmic death, and cardiac resynchronisation (CRT) to treat the discoordinated failing heart. They now constitute a major therapeutic option and may eventually supersede drug therapy. The coming era will be marked by a technological revolution, with improvements in treatment delivery, safety and efficacy, and an expansion of clinical indications...
March 2014: Bulletin de L'Académie Nationale de Médecine
https://www.readbyqxmd.com/read/25610802/the-subcutaneous-icd-current-evidence-and-challenges
#9
REVIEW
Kiran Haresh Kumar Patel, Pier D Lambiase
The subcutaneous implantable cardioverter-defibrillator (S-ICD) represents an exciting development in ICD technology. It has relative advantages over traditional transvenous systems, particularly for young patients in whom the lifetime risk of device-related complications may be deemed to be unacceptably high. While data relating to device longevity and long term safety profile is yet to be accrued, several recent studies have demonstrated good clinical efficacy comparable to transvenous ICDs. Indeed, new techniques have also been developed to simplify the S-ICD implantation procedure and attempts have been made to address challenges pertaining to T-wave oversensing to reduce the delivery of inappropriate shocks...
December 2014: Cardiovascular Diagnosis and Therapy
https://www.readbyqxmd.com/read/24497573/feasibility-safety-and-short-term-outcome-of-leadless-ultrasound-based-endocardial-left-ventricular-resynchronization-in-heart-failure-patients-results-of-the-wireless-stimulation-endocardially-for-crt-wise-crt-study
#10
MULTICENTER STUDY
Angelo Auricchio, Peter-Paul Delnoy, Christian Butter, Johannes Brachmann, Lieselot Van Erven, Stefan Spitzer, Tiziano Moccetti, Martin Seifert, Thanasie Markou, Karolyi Laszo, François Regoli
AIMS: Left ventricular (LV) endocardial pacing may address the limitations in the selection of an LV pacing site and provide improvements in cardiac resynchronization therapy (CRT) effectiveness. We report on the feasibility, the safety, and the short-term outcome of a leadless ultrasound-based technology for LV endocardial resynchronization in heart failure (HF) patients enroled into the Wireless Stimulation Endocardially for CRT (WiSE-CRT) study. METHODS AND RESULTS: Seventeen HF patients were enroled and categorized as: (i) patients in whom attempted coronary sinus lead implantation for CRT had failed (n = 7); (ii) patients with a previously implanted CRT device, not responding to CRT (n = 2); and (iii) patients with previously implanted pacemakers or implantable cardioverter-defibrillator and meeting the standard indications for CRT (n = 8)...
May 2014: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/21135811/cardiac-resynchronization-therapy-current-trends-and-future-directions
#11
REVIEW
S Jacob, A S Bharadwaj, S S Panaich, A Mathew, L Afonso
Despite the clear cut indications for cardiac resynchronization therapy (CRT) laid down by guideline forming bodies, there are numerous unresolved issues. This review article primarily focuses on the current trends in CRT and the challenges encountered in patient selection, procedure related and postimplantation patient management issues. The high rate of non-response to CRT warrants a critical appraisal of the patient selection criteria, with the role of QRS duration and use of imaging to quantify ventricular dyssynchrony being the major points of discussion...
December 2010: Minerva Cardioangiologica
https://www.readbyqxmd.com/read/18070295/use-of-an-intracardiac-electrogram-eliminates-the-need-for-a-surface-ecg-during-implantable-cardioverter-defibrillator-follow-up
#12
Kevin A Michael, Brett J Peterson, Arthur M Yue, Ryan D Wilson, Li Wang, Kevin Ousdigian, Bruce Wilkoff, Laurence Sterns, John M Morgan et al.
BACKGROUND: A surface electrocardiogram (SECG) for pacing threshold measurements during routine implantable cardioverter-defibrillator (ICD) follow-up can be cumbersome. This study evaluated the use of an intrathoracic far-field electrogram (EGM) derived between the Can and superior vena cava (SVC) electrode -- the Leadless electrocardiogram (LLECG), in dual chamber ICDs in performing pacing threshold tests. METHODS: The LLECG was evaluated prospectively during atrial and ventricular pacing threshold testing as a substudy of the Comparison of Empiric to Physician-Tailored Programming of Implantable Cardioverter-Defibrillators trial (EMPIRIC) in which dual chamber ICDs were implanted in 888 patients...
December 2007: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/16177844/the-leadless-defibrillator-or-the-return-of-the-subcutaneous-electrode-episode-iii-in-the-icd-saga
#13
Sanjeev Saksena
No abstract text is available yet for this article.
September 2005: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/11817814/minimally-invasive-cardioverter-defibrillator-implantation-for-children-an-animal-model-and-pediatric-case-report
#14
C I Berul, J K Triedman, J Forbess, L M Bevilacqua, M E Alexander, D Dahlby, J O Gilkerson, E P Walsh
The smaller venous capacitance in infants and small children may hamper transvenous ICD lead implantation, and epicardial approaches require thoracotomy and have associated complications. The study evaluated the feasibility and performance of subcutaneous arrays and active can ICDs without transvenous shocking coils or epicardial patches. An immature and mature pig were anesthetized and ventilated. A pacing lead was inserted in the right ventricle for fibrillation induction and rate sensing. Subcutaneous arrays were positioned in the right and left chest walls...
December 2001: Pacing and Clinical Electrophysiology: PACE
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