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https://www.readbyqxmd.com/read/28800177/exercise-stress-test-reveals-ineligibility-for-subcutaneous-implantable-cardioverter-defibrillator-in-patients-with-brugada-syndrome
#1
Motomi Tachibana, Nobuhiro Nishii, Hiroshi Morita, Koji Nakagawa, Atsuyuki Watanabe, Kazufumi Nakamura, Hiroshi Ito
BACKGROUND: The eligibility of patients with Brugada syndrome (BrS) for implantation of a subcutaneous implantable cardioverter defibrillator (S-ICD) is not well known. This study aimed to clarify the eligibility of BrS patients for S-ICD using electrocardiography (ECG) at rest and during exercise testing. We also analyzed factors associated with ineligibility for S-ICD from standard 12-lead ECG at rest. METHODS: We enrolled 110 consecutive BrS patients who visited Okayama university hospital from December 2015 to December 2016...
August 11, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28797351/implant-and-midterm-outcomes-of-the-subcutaneous-implantable-cardioverter-defibrillator-registry-the-effortless-study
#2
MULTICENTER STUDY
Lucas Boersma, Craig Barr, Reinoud Knops, Dominic Theuns, Lars Eckardt, Petr Neuzil, Marcoen Scholten, Margaret Hood, Juergen Kuschyk, Paul Jones, Elizabeth Duffy, Michael Husby, Kenneth Stein, Pier D Lambiase
BACKGROUND: The subcutaneous implantable cardioverter-defibrillator (S-ICD) was developed to defibrillate ventricular arrhythmias, avoiding drawbacks of transvenous leads. The global EFFORTLESS S-ICD (Evaluation oF FactORs ImpacTing CLinical Outcome and Cost EffectiveneSS of the S-ICD) registry is collecting outcomes in 985 patients during a 5-year follow-up. OBJECTIVES: The primary goal of the EFFORTLESS registry is to determine the safety of the S-ICD by evaluating complications and inappropriate shock rate...
August 15, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28765769/initial-experience-with-the-subcutaneous-implantable-cardioverter-defibrillator-in-a-single-japanese-center
#3
Nobuhiro Nishii, Motomi Tachibana, Yoshimasa Morimoto, Satoshi Kawada, Akihito Miyoshi, Hiroyasu Sugiyama, Koji Nakagawa, Atsuyuki Watanabe, Kazufumi Nakamura, Hiroshi Morita, Hiroshi Ito
BACKGROUND: The subcutaneous implantable cardioverter-defibrillator (S-ICD) is recognized as a viable alternative to the transvenous ICD. The safety and efficacy of this device has been demonstrated in Western countries, but studies with S-ICD implantation in Japanese patients have not been reported. METHODS AND RESULTS: Twelve patients received an S-ICD implant in our institute between February and September 2016. All S-ICDs were successfully implanted without complications...
August 2017: Journal of Arrhythmia
https://www.readbyqxmd.com/read/28754394/a-potentially-lethal-dysfunction-of-a-subcutaneous-implantable-cardiac-defibrillator-the-phantom-menace
#4
Mihaela Calcaianu, Didier Bresson, Jacques Lévy
In this article we describe, to our knowledge, the first case of a potentially lethal dysfunction of a subcutaneous implantable cardioverter-defibrillator (S-ICD). A 70-year-old patient underwent primary S-ICD implantation. Nine months after, communication could not be established with the device. Chest radiography revealed that the lead had moved and wrapped around the generator. After equipment extraction, we observed the lead wound around the sagittal axis of the generator. A burn mark with melted metal was found inside the generator...
August 2017: Canadian Journal of Cardiology
https://www.readbyqxmd.com/read/28754393/totally-leadless-dual-device-implantation-for-combined-spontaneous-ventricular-tachycardia-defibrillation-and-pacemaker-function-a-first-report
#5
Fozia Zahir Ahmed, Colin Cunnington, Manish Motwani, Amir Masood Zaidi
Subcutaneous implantable cardioverter defibrillators (S-ICDs) provide effective defibrillation, while also reducing the risk of long-term lead problems. However, S-ICDs do not offer bradycardia or antitachycardia pacing and therefore use has been limited. Combined implantation of an S-ICD with a leadless pacemaker (LP) has been proposed to overcome this limitation. Although a handful of combined S-ICD/LP implantations have been reported for Nanostim (St Jude Medical, St Paul, MN) as well as Micra LP (Medtronic, Minneapolis, MN) systems, none have documented delivery of appropriate shock therapies for spontaneous ventricular tachycardia...
August 2017: Canadian Journal of Cardiology
https://www.readbyqxmd.com/read/28706590/entirely-subcutaneous-defibrillator-and-complex-congenital-heart-disease-data-on-long-term-clinical-follow-up
#6
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/28687562/efficacy-and-safety-of-the-subcutaneous-implantable-cardioverter-defibrillator-a-systematic-review
#7
REVIEW
Colin Dominic Chue, Chun Shing Kwok, Chun Wai Wong, Ashish Patwala, Diane Barker, Amir Zaidi, Mamas A Mamas, Colin Cunnington, Fozia Z Ahmed
BACKGROUND: Subcutaneous implantable cardioverter defibrillators (S-ICDs) are considered an alternative to conventional transvenous ICDs (TV-ICDs) in patients not requiring pacing. METHODS: We searched MEDLINE and EMBASE for studies evaluating efficacy and safety outcomes in S-ICD patients. Outcomes were pooled across studies. RESULTS: Sixteen studies were included with 5380 participants (mean age range 33-56 years). Short-term follow-up data were available for 1670 subjects...
September 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28625372/multicenter-automatic-defibrillator-implantation-trial-subcutaneous-implantable-cardioverter-defibrillator-madit-s-icd-design-and-clinical-protocol
#8
RANDOMIZED CONTROLLED TRIAL
Valentina Kutyifa, Christopher Beck, Mary W Brown, David Cannom, James Daubert, Mark Estes, Henry Greenberg, Ilan Goldenberg, Stephen Hammes, David Huang, Helmut Klein, Reinoud Knops, Mikhail Kosiborod, Jeanne Poole, Claudio Schuger, Jagmeet P Singh, Scott Solomon, David Wilber, Wojciech Zareba, Arthur J Moss
Patients with diabetes mellitus, prior myocardial infarction, older age, and a relatively preserved left ventricular ejection fraction remain at risk for sudden cardiac death that is potentially amenable by the subcutaneous implantable cardioverter defibrillator with a good risk-benefit profile. The launched MADIT S-ICD study is designed to test the hypothesis that post-myocardial infarction diabetes patients with relatively preserved ejection fraction of 36%-50% will have a survival benefit from a subcutaneous implantable cardioverter defibrillator...
July 2017: American Heart Journal
https://www.readbyqxmd.com/read/28624663/role-of-exercise-electrocardiogram-to-screen-for-t-wave-oversensing-after-implantation-of-subcutaneous-implantable-cardioverter-defibrillator
#9
Muhammad R Afzal, Christopher Evenson, Auroa Badin, Dilesh Patel, Hemant Godara, Michael Essandoh, Toshimasa Okabe, Jaret Tyler, Mahmoud Houmsse, Ralph Augostini, John Hummel, Steven Kalbfleisch, Emile G Daoud, Raul Weiss
BACKGROUND: During early experience with subcutaneous implantable cardioverter-defibrillators (S-ICD), several patients had inappropriate shocks from T-wave oversensing (TWOS) during exercise. This prompted some operators to perform routine treadmill exercise tests after implantation of S-ICD to screen for TWOS. Meanwhile, improvements have been made in the detection algorithms by the manufacturer. OBJECTIVE: To assess whether routine treadmill exercise post S-ICD implantation is warranted...
June 15, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28543399/baroreceptor-stimulation-in-a-patient-with-preexisting-subcutaneous-implantable-cardioverter-defibrillator
#10
Kay F Weipert, Jens Andrick, Ritvan Chasan, Christopher Gemein, Astrid Most, Christian W Hamm, Damir Erkapic, Joern Schmitt
BACKGROUND: Many patients with severe heart failure (HF) have an indication for baroreflex activation therapy (BAT) and an ICD. Concerns about device-device interactions were addressed in a study with small sample size that concluded combined BAT and ICD therapy is safe. There are no published data, however, concerning device-device interactions between BAT and a subcutaneous ICD (S-ICD). Since BAT frequently interferes with surface ECG recordings there are doubts about compatibility of BAT and S-ICD devices...
May 24, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28543085/combination-of-a-subcutaneous-icd-in-a-patient-with-a-baroreceptor-activation-device-feasibility-safety-and-precautions-a-case-report
#11
Liz Kuffer, Daniel Steven, Marcel Halbach, Jakob Lüker, Jan-Hendrik van den Bruck, Arian Sultan
We present a case of a patient with a baroreceptor activation therapy (BAT) receiving a subcutaneous ICD. We anticipated two possible hazardous interactions between the two devices. Stimulation by the BAT could be adjudicated as noise and result in under-detection of ventricular arrhythmias or it might be misinterpreted as ventricular arrhythmias and lead to inappropriate shocks. Postop ensing occurred, the upper limit of pulse width of the BAT was limited because of noise detection by the S-ICD, but the upper limit of amplitude was limited by patient's discomfort...
May 23, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28536837/controlled-sedation-with-midazolam-and-analgesia-with-nalbuphine-to-alleviate-pain-in-patients-undergoing-subcutaneous-implantable-cardioverter-defibrillator-implantation
#12
Michaël Peyrol, Jérémie Barraud, Jennifer Cautela, Baptiste Maille, Marc Laine, Laurent Bonello, Franck Thuny, Franck Paganelli, Frédéric Franceschi, Linda Koutbi, Samuel Levy
PURPOSE: Subcutaneous implantable cardioverter defibrillator (S-ICD) is an alternative to transvenous ICD to prevent sudden cardiac death. Subcutaneous ICD implantation frequently requires general anesthesia because of procedure nociceptive steps during creation of a large device pocket and lead tunneling. This study aims to determine if a strategy of operator-guided controlled sedation with midazolam and analgesia with nalbuphine is effective in alleviating pain during S-ICD implantation...
August 2017: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/28534239/analysis-of-screening-electrocardiogram-for-the-subcutaneous-defibrillator-in-adults-with-congenital-heart-disease
#13
Vincent C Thomas, Mark Peterson, Martin McDaniel, Humberto Restrepo, Abraham Rothman, Amit Jain
Candidates for the subcutaneous implantable cardioverter-defibrillator (S-ICD) are screened using an electrocardiogram (S-ECG) tool to measure appropriate detection. We sought to define the S-ICD candidacy of congenital heart disease patients using the S-ECG tool. We also analyzed the reliability of the (S-ECG) tool between measurers in this population. Patients above the age of 12 and with a diagnosis associated with either a higher incidence of cardiac arrest or vascular access challenges were asked to undergo screening...
August 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28523371/impact-of-electrocardiogram-screening-during-drug-challenge-test-for-the-prediction-of-t-wave-oversensing-by-a-subcutaneous-implantable-cardioverter-defibrillator-in-patients-with-brugada-syndrome
#14
Tsukasa Kamakura, Mitsuru Wada, Kohei Ishibashi, Yuko Y Inoue, Koji Miyamoto, Hideo Okamura, Satoshi Nagase, Takashi Noda, Takeshi Aiba, Satoshi Yasuda, Kengo Kusano
Screening tests conducted at rest may be inadequate for the prediction of the T-wave oversensing (TWOS) in subcutaneous implantable cardioverter defibrillator (S-ICD) candidates with Brugada syndrome (BrS) because of the dynamic nature of electrocardiogram (ECG) morphology. We evaluated the utility of ECG screening during drug challenge (DC) for prediction of TWOS in BrS patients implanted with an S-ICD. The study enrolled 6 consecutive BrS patients implanted with an S-ICD. In addition to baseline ECG screening, pre-implant screening during DC using a sodium channel blocker was performed in all patients...
May 18, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28502872/subcutaneous-implantable-cardioverter-defibrillator-post-approval-study-clinical-characteristics-and-perioperative-results
#15
Michael R Gold, Johan D Aasbo, Mikhael F El-Chami, Mark Niebauer, John Herre, Jordan M Prutkin, Bradley P Knight, Steven Kutalek, Kevin Hsu, Raul Weiss, Eric Bass, Michael Husby, Timothy M Stivland, Martin C Burke
BACKGROUND: The subcutaneous implantable cardioverter-defibrillator (S-ICD) was developed to reduce short- and long-term complications associated with transvenous ICD leads. Early multicenter studies included younger patients with less left ventricular systolic dysfunction and fewer comorbidities than cohorts with traditional ICD. OBJECTIVE: The purpose of this study was to characterize patient selection and the acute performance of the S-ICD in a contemporary real-world setting...
May 11, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28460030/subcutaneous-cardioverter-defibrillator-has-longer-time-to-therapy-but-is-less-cardiotoxic-than-transvenous-cardioverter-defibrillator-study-carried-out-in-a-preclinical-porcine-model
#16
Rodrigue Garcia, Sofiane Inal, Frederic Favreau, Christophe Jayle, Thierry Hauet, Patrick Bruneval, Thomas Kerforne, Jamil Hajj-Chahine, Bruno Degand
Aims: Totally subcutaneous implantable cardioverter defibrillator (S-ICD) delivers higher shock energy and can have longer time to therapy compared to transvenous implantable cardioverter defibrillator (T-ICD). Aim of the study was to compare time to therapy and to investigate cardiac, cerebral and systemic injuries of S-ICD and T-ICD shocks delivered after ventricular fibrillation (VF) induction. Methods and results: Fourteen pigs were randomly implanted with a S-ICD (n = 7) or a T-ICD (n = 7)...
April 27, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28432805/pitfalls-in-electrogram-interpretation-subcutaneous-cardioverter-defibrillator-malfunction-in-brugada-syndrome
#17
Giovanni Morani, Bruna Bolzan, Luca Tomasi, Ruggero Tomei, Corrado Vassanelli
A patient with Brugada Syndrome implanted with subcutaneous cardioverter defibrillator (S-ICD) had oversensing episodes treated with S-ICD shocks. Comparable artefacts weren't evocable with S-ICD pocket manipulation. The fluoroscopy excluded S-ICD macroscopic damage. The device extraction revealed undamaged pulse generator and connector, but the lead was inappropriately tunnelled under the sixth rib. Then the S-ICD malfunction was due to lead microscopic damage caused by lead rubbing the rib surface. This article is protected by copyright...
April 22, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28416987/importance-of-exercise-testing-shortly-after-subcutaneous-implantable-cardioverter-defibrillator-implantation-in-patients-with-brugada-syndrome-the-first-case-of-associated-inappropriate-shock-in-japan
#18
Kohei Ishibashi, Takashi Noda, Tsukasa Kamakura, Mitsuru Wada, Yuko Inoue, Hideo Okamura, Kengo Kusano
We report the case of a 51-year-old patient with Brugada syndrome (BrS) who experienced inappropriate shock due to T-wave oversensing (TWOS) during exercise when the optimal sensing vector was selected based on the automatic analysis by a subcutaneous implantable cardioverter-defibrillator (S-ICD). After selecting another vector during exercise testing, TWOS did not re-occur. Selection of appropriate sensing vector based on analyses under various conditions, including during exercise after S-ICD implantation, should be considered for patients with BrS...
April 2017: Journal of Arrhythmia
https://www.readbyqxmd.com/read/28408651/disease-severity-and-exercise-testing-reduce-subcutaneous-implantable-cardioverter-defibrillator-left-sternal-ecg-screening-success-in-hypertrophic-cardiomyopathy
#19
Neil T Srinivasan, Kiran H Patel, Kashif Qamar, Amy Taylor, Marco Bacà, Rui Providência, Maria Tome-Esteban, Perry M Elliott, Pier D Lambiase
BACKGROUND: The features of the hypertrophic cardiomyopathy (HCM) ECG make it a challenge for subcutaneous implantable cardioverter-defibrillator (S-ICD) screening. We aimed to investigate the causes of screening failure at rest and on exercise to inform optimal S-ICD ECG vector development. METHODS AND RESULTS: One hundred and thirty-one HCM patients (age, 50±16 years; 92 males and 39 females) with ≥1 HCM risk factor for sudden death underwent S-ICD ECG screening at rest and on exercise...
April 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/28383717/characteristics-and-early-clinical-outcomes-of-patients-undergoing-totally-subcutaneous-vs-transvenous-single-chamber-implantable-cardioverter-defibrillator-placement
#20
Ali A Mithani, Heaton Kath, Krystal Hunter, John Andriulli, Matthew Ortman, Julie Field, Andrea M Russo
Aims: In 2012, the first totally Subcutaneous Implantable Cardioverter-Defibrillator (S-ICD) was approved by the Food and Drug Administration (FDA) in the United States. A possible benefit of this device is that it does not involve placing leads 'in' or 'on' the heart, potentially reducing complications. Methods amd results: Ninety-one S-ICD and 182 single chamber TV-ICD implants were performed between 10/22/2012 and 9/22/2015. During this period of time, 91 patients with S-ICD were matched to TV-ICD patients using single centre NCDR ICD Registry Data based on dialysis status, gender, and age...
April 4, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
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