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Cardiac defibrillators

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https://www.readbyqxmd.com/read/29332241/atrial-fibrillation-is-associated-with-sudden-cardiac-death-a-systematic-review-and-meta-analysis
#1
Pattara Rattanawong, Sikarin Upala, Tanawan Riangwiwat, Veeravich Jaruvongvanich, Anawin Sanguankeo, Wasawat Vutthikraivit, Eugene H Chung
PURPOSE: Recent studies suggest that atrial fibrillation (AF) is associated with increased cardiovascular risk and mortality including sudden cardiac death (SCD). According to the Cardiovascular Heath Study cohort, the incident rate of SCD was higher in the AF population (2.9 per 1000 per year) compared with non-AF controls (1.3 per 1000 per year). In this study, we performed a systematic review and meta-analysis to explore the association between AF and SCD. METHODS: We comprehensively searched the databases of MEDLINE and EMBASE from inception to January 2017...
January 13, 2018: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/29331055/the-challenges-and-possibilities-of-public-access-defibrillation
#2
REVIEW
Mattias Ringh, Jacob Hollenberg, Thea Palsgaard-Moeller, Leif Svensson, Mårten Rosenqvist, Freddy K Lippert, Mads Wissenberg, Carolina Malta Hansen, Andreas Claesson, Soren Viereck, Jolande A Zijlstra, Rudolph W Koster, Johan Herlitz, Marieke T Blom, Jo Kramer-Johansen, Hanno L Tan, Steffie Beesems, Michiel Hulleman, Theresa M Olasveengen, Fredrik Folke
Out-of-Hospital Cardiac Arrest (OHCA) is a major health problem that affects approximately four hundred thousand patients annually in the United States alone. It is a major challenge for the emergency medical system since decreased survival rates are directly proportional to the time delay from collapse to defibrillation. Historically, defibrillation has only been performed by physicians and in-hospital. With the development of automated external defibrillators (AEDs), rapid defibrillation by non-medical professionals and subsequently by trained or untrained lay bystanders has become possible...
January 13, 2018: Journal of Internal Medicine
https://www.readbyqxmd.com/read/29328900/detecting-and-managing-device-leads-inadvertently-placed-in-the-left-ventricle
#3
REVIEW
Richard G Trohman, Parikshit S Sharma
Inadvertent malpositioning of a cardiac implantable electronic device lead into the left ventricle is a rare complication of transvenous pacing and defibrillation. Rapid identification of lead position is critical during implantation and just after the procedure, with immediate correction required if malpositioning is detected. If lead misplacement is discovered late after implantation, the lead should be surgically removed or chronic anticoagulation with warfarin should be instituted.
January 2018: Cleveland Clinic Journal of Medicine
https://www.readbyqxmd.com/read/29327057/distinguishing-uveitis-secondary-to-sarcoidosis-from-idiopathic-disease-cardiac-implications
#4
Yong Seop Han, Erick Rivera-Grana, Sherveen Salek, James T Rosenbaum
Importance: Idiopathic disease is the most frequent diagnosis in a uveitis clinic. The need to distinguish sarcoidosis from idiopathic uveitis is controversial. However, cardiac involvement in sarcoidosis can be life-threatening. Objective: To report a series of patients with uveitis and cardiac sarcoidosis to illustrate the importance of categorizing the causes of uveitis. Design, Setting, and Participants: This retrospective observational case series reviewed the medical records of 249 patients with uveitis who were referred to the Casey Eye Institute between July 1, 2008, and February 28, 2017...
January 11, 2018: JAMA Ophthalmology
https://www.readbyqxmd.com/read/29326129/machine-learning-algorithm-predicts-cardiac-resynchronization-therapy-outcomes-lessons-from-the-companion-trial
#5
Matthew M Kalscheur, Ryan T Kipp, Matthew C Tattersall, Chaoqun Mei, Kevin A Buhr, David L DeMets, Michael E Field, Lee L Eckhardt, C David Page
BACKGROUND: Cardiac resynchronization therapy (CRT) reduces morbidity and mortality in heart failure patients with reduced left ventricular function and intraventricular conduction delay. However, individual outcomes vary significantly. This study sought to use a machine learning algorithm to develop a model to predict outcomes after CRT. METHODS AND RESULTS: Models were developed with machine learning algorithms to predict all-cause mortality or heart failure hospitalization at 12 months post-CRT in the COMPANION trial (Comparison of Medical Therapy, Pacing, and Defibrillation in Heart Failure)...
January 2018: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/29325978/management-of-cardiac-implantable-electronic-devices-in-the-presence-of-left-ventricular-assist-devices
#6
Valay Parikh, Andrew Sauer, Paul Friedman, Seth H Sheldon
Left ventricular assist devices (LVAD) are increasingly utilized in the management of patients with advanced heart failure. Many of these patients have or will be considered for cardiac implantable electronic devices (CIEDs) such as an implantable cardioverter-defibrillator or cardiac resynchronization therapy device. Frequent interplay is often encountered due to complexity of these devices and the underlying disease states. Proactive management strategies and an awareness of interactions may help reduce adverse events...
January 8, 2018: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/29325976/profile-of-brugada-syndrome-patients-presenting-with-their-first-documented-arrhythmic-event-data-from-the-survey-on-arrhythmic-events-in-brugada-syndrome-sabrus
#7
Anat Milman, Antoine Andorin, Jean-Baptiste Gourraud, Pieter G Postema, Frederic Sacher, Philippe Mabo, Sung-Hwan Kim, Jimmy Jm Juang, Shingo Maeda, Yoshihide Takahashi, Tsukasa Kamakura, Takeshi Aiba, Giulio Conte, Georgia Sarquella-Brugada, Eran Leshem, Michael Rahkovich, Aviram Hochstadt, Yuka Mizusawa, Elena Arbelo, Zhengrong Huang, Isabelle Denjoy, Carla Giustetto, Yanushi D Wijeyeratne, Carlo Napolitano, Yoav Michowitz, Ramon Brugada, Ruben Casado-Arroyo, Jean Champagne, Leonardo Calo, Jacob Tfelt-Hansen, Silvia G Priori, Masahiko Takagi, Christian Veltmann, Pietro Delise, Domenico Corrado, Elijah R Behr, Fiorenzo Gaita, Gan-Xin Yan, Josep Brugada, Antoine Leenhardt, Arthur A M Wilde, Pedro Brugada, Kengo F Kusano, Kenzo Hirao, Gi-Byoung Nam, Vincent Probst, Bernard Belhassen
BACKGROUND: Detailed information on the profile of Brugada syndrome (BrS) patients presenting their first arrhythmic event (AE) after prophylactic implantation of a cardioverter defibrillator (ICD) is limited. OBJECTIVES: 1) To compare clinical, electrocardiographic, electrophysiologic and genetic profiles of patients who exhibited their first documented AE as aborted cardiac arrest (CA) (group A) with those in whom the AE was documented after prophylactic ICD implantation (group B); 2) To characterize group B patients' profile using the Class II indications for ICD implantation established by HRS/EHRA/APHRS Expert Consensus Statement in 2013...
January 8, 2018: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/29325973/cardiac-electronic-implantable-devices-after-tricuspid-valve-surgery
#8
Raphaël P Martins, Vincent Galand, Christophe Leclercq, Jean-Claude Daubert
The demand for tricuspid valve (TV) surgery has increased continuously these last years. Recent registry data have confirmed that TV repair or replacement carry an increased risk of conduction disorders requiring permanent pacemaker implantation, specifically for patients having multivalve surgery. The implantation of an endocardial right ventricular lead in those patients may impair TV function, and some other approaches may be discussed to avoid traversing the valve. This contemporary review describes the different options currently available for patients requiring pacemaker or defibrillation leads implantation after TV surgery...
January 8, 2018: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/29325638/implantable-cardioverter-defibrillators-in%C3%A2-children-and-adolescents-with-brugada%C3%A2-syndrome
#9
M Cecilia Gonzalez Corcia, Juan Sieira, Gudrun Pappaert, Carlo de Asmundis, Gian Battista Chierchia, Mark La Meir, Andrea Sarkozy, Pedro Brugada
BACKGROUND: Young patients presenting with symptomatic Brugada syndrome have very high risks for ventricular arrhythmias and should be carefully considered for implantable cardioverter-defibrillator (ICD) placement. However, this therapy is associated with high rates of inappropriate shocks and device-related complications. OBJECTIVES: This study investigated clinical features, management, and long-term follow-up of young patients with Brugada syndrome and ICD. METHODS: Patients diagnosed with Brugada syndrome, who underwent implantation of an ICD at an age of ≤20 years, were studied...
January 16, 2018: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/29325362/-predicting-value-of-2014-european-guidelines-risk-prediction-model-for-sudden-cardiac-death-hcm-risk-scd-in-chinese-patients-with-hypertrophic-cardiomyopathy
#10
W X Li, L W Liu, J Wang, L Zuo, F Yang, N Kang, C H Lei
Objective: To evaluate the predicting value of the 2014 European Society of Cardiology (ESC) guidelines risk prediction model for sudden cardiac death (HCM Risk-SCD) in Chinese patients with hypertrophic cardiomyopathy (HCM), and to explore the predictors of adverse cardiovascular events in Chinese HCM patients. Methods: The study population consisted of a consecutive 207 HCM patients admitted in our center from October 2014 to October 2016. All patients were followed up to March 2017. The 5-year SCD probability of each patient was estimated using HCM Risk-SCD model based on electrocardiogram, echocardiography and cardiac magnetic resonance (CMR) examination results...
December 24, 2017: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/29321418/optimal-medications-and-appropriate-implantable-cardioverter-defibrillator-shocks-in-aborted-sudden-cardiac-death-due-to-coronary-spasm
#11
Shozo Sueda, Hiroaki Kohno
Background Life-threatening ventricular arrhythmias are recognized in patients with coronary spastic angina. Implantable cardioverter-defibrillators (ICDs) are effective in patients with structural heart disease and ventricular fibrillation. However, the optimal medication for patients with aborted sudden cardiac death (SCD) due to coronary artery spasm after the implantation of ICD remains controversial. Methods We investigated the medications and the numbers of appropriate ICD shocks in 137 patients with a history of aborted SCD due to coronary spasm...
January 11, 2018: Internal Medicine
https://www.readbyqxmd.com/read/29320931/physician-decision-making-in-anticoagulating-atrial-fibrillation-a-prospective-survey-of-a-physician-notification-system-for-atrial-fibrillation-detected-on-cardiac-implantable-electronic-devices-of-patients-at-increased-risk-of-stroke
#12
Justin M Cloutier, Clarence Khoo, Brett Hiebert, Anthony Wassef, Colette M Seifer
OBJECTIVES: The objectives of this study were to evaluate the effectiveness of a physician notification system for atrial fibrillation (AF) detected on cardiac devices, and to assess predictors of anticoagulation in patients with device-detected AF. METHODS: In 2013, a physician notification system for AF detected on a patient's CIED [including pacemakers, implantable cardioverter defibrillators (ICD) or cardiac resynchronization therapy (CRT) devices] was implemented, with a recommendation to consider oral anticoagulation in high-risk patients...
January 1, 2018: Therapeutic Advances in Cardiovascular Disease
https://www.readbyqxmd.com/read/29318626/trends-and-predictors-of-implantable-cardioverter-defibrillator-implantation-after-sudden-cardiac-arrest-insight-from-the-national-inpatient-sample
#13
Muhammad Bilal Munir, Fahad Alqahtani, Sami Aljohani, Ashwin Bhirud, Sujal Modi, Mohamad Alkhouli
BACKGROUND: Implantable cardioverter defibrillator (ICD) has a class IA indication in survivors of sudden cardiac arrest (SCA) provided no reversible cause is identified. We sought to determine trends and predictors of ICD implant in SCA patients from a national sample of United States population. METHODS AND RESULTS: Data was gathered from National Inpatient Sample (NIS) from January 2003 to December 2014. All patients ≥ 18 years of age with a primary discharge diagnosis of SCA, ventricular fibrillation (VF), ventricular flutter, and ventricular tachycardia (VT) were included...
January 9, 2018: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29318430/an-eight-year-prospective-controlled-study-about-the-safety-and-diagnostic-value-of-cardiac-and-non-cardiac-1-5-t-mri-in-patients-with-a-conventional-pacemaker-or-a-conventional-implantable-cardioverter-defibrillator
#14
Pierpaolo Lupo, Riccardo Cappato, Giovanni Di Leo, Francesco Secchi, Giacomo D E Papini, Sara Foresti, Hussam Ali, Guido M G De Ambroggi, Antonio Sorgente, Gianluca Epicoco, Paola M Cannaò, Francesco Sardanelli
OBJECTIVES: To investigate safety and diagnostic value of 1.5-T MRI in carriers of conventional pacemaker (cPM) or conventional implantable defibrillator (cICD). METHODS: We prospectively compared cPM/cICD-carriers undergoing MRI (study group, SG), excluding those device-dependent or implanted <6 weeks before enrolment or prior to 01/01/2000, with cPM/cICD-carriers undergoing chest x-ray, CT or follow-up (reference group, RG). RESULTS: 142 MRI (55 cardiac) were performed in 120 patients with cPM (n=71) or cICD (n=71)...
January 9, 2018: European Radiology
https://www.readbyqxmd.com/read/29317975/subcutaneous-implantable-cardioverter-defibrillators-implantation-without-defibrillation-threshold-testing-a-single-center-experience
#15
Bandar Al-Ghamdi, Azam Shafquat, Nadiah Alruwaili, Shisamma Emmanual, Mohamed Shoukri, Yaseen Mallawi
Background: Subcutaneous implantable cardioverter defibrillator (S-ICD) system has been proven to be an effective therapy for prevention of sudden cardiac death (SCD) in selected patients. Although the Shockless IMPLant Evaluation (SIMPLE) trial has shown that defibrillation threshold (DFT) testing is not necessary for transvenous ICD (TV-ICD) systems, it is still recommended for S-ICD systems. We aimed to study the efficacy and safety of S-ICD implantation without DFT in our Heart Center with the comparison of S-ICD patients' outcome to those with a single chamber TV-ICD without DFT in the same period...
December 2017: Cardiology Research
https://www.readbyqxmd.com/read/29317455/improving-temporal-trends-in-survival-and-neurological-outcomes-after-out-of-hospital-cardiac-arrest
#16
Jason E Buick, Ian R Drennan, Damon C Scales, Steven C Brooks, Adams Byers, Sheldon Cheskes, Katie N Dainty, Michael Feldman, P Richard Verbeek, Cathy Zhan, Alex Kiss, Laurie J Morrison, Steve Lin
BACKGROUND: Considerable effort has gone into improving outcomes from out-of-hospital cardiac arrest (OHCA). Studies suggest that survival is improving; however, prior studies had insufficient data to pursue the relationship between markers of guideline compliance and temporal trends. The objective of the study was to evaluate trends in OHCA survival over an 8-year period that included the implementation of the 2005 and 2010 international cardiopulmonary resuscitation (CPR) guidelines...
January 2018: Circulation. Cardiovascular Quality and Outcomes
https://www.readbyqxmd.com/read/29316018/post-mortem-icd-interrogation-in-mode-of-death-classification
#17
Theodora Nikolaidou, Miriam J Johnson, Justin M Ghosh, Carl Marincowitz, Saumil Shah, Michael J Lammiman, Richard J Schilling, Andrew L Clark
BACKGROUND: The definition of sudden death due to arrhythmia relies on the time interval between onset of symptoms and death. However, not all sudden deaths are due to arrhythmia. In patients with an implantable cardioverter defibrillator (ICD) post-mortem device interrogation may help better distinguish the mode of death compared to a time-based definition alone. OBJECTIVE: This study aims to assess the proportion of "sudden" cardiac deaths in patients with an ICD that have confirmed arrhythmia...
January 8, 2018: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/29315402/cardiac-optogenetics-the-next-frontier
#18
Amit Gruber, Oded Edri, Lior Gepstein
The emerging technology of optogenetics uses optical and genetic means to monitor and modulate the electrophysiological properties of excitable tissues. While transforming the field of neuroscience, the technology has recently gained popularity also in the cardiac arena. Here, we describe the basic principles of optogenetics, the available and evolving optogenetic tools, and the unique potential of this technology for basic and translational cardiac electrophysiology. Specifically, we discuss the ability to control (augment or suppress) the cardiac tissue's excitable properties using optogenetic actuators (microbial opsins), which are light-gated ion channels and pumps that can cause light-triggered membrane depolarization or hyperpolarization...
January 5, 2018: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/29314081/predictors-and-outcomes-of-patients-requiring-repeat-transvenous-lead-extraction-of-pacemaker-and-defibrillator-leads
#19
Simon Claridge, Jonathan Johnson, Gazi Sadnan, Jonathan M Behar, Bradley Porter, Benjamin Sieniewicz, Tom Jackson, Jessica Webb, Justin Gould, Manav Sohal, Shoaib Hamid, Nik Patel, Jaswinder Gill, Christopher A Rinaldi
BACKGROUND: A proportion of patients who undergo an initial lead extraction procedure will require a second, repeat extraction. Data regarding this clinical entity are scarce and neither the predisposing risk factors for, nor outcomes from these procedures have been described previously. We sought to determine the incidence, risk factors and outcomes of repeat lead extraction. METHODS: A database of extraction procedures from 2001-2015 was analyzed. Repeat extraction procedures were identified and the indication for extraction was dichotomized into infection and lead related problems...
January 5, 2018: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29313369/characteristics-and-prognosis-of-heart-failure-with-improved-compared-with-persistently-reduced-ejection-fraction-a-systematic-review-and-meta-analyses
#20
Mads E Jørgensen, Charlotte Andersson, Ramachandran S Vasan, Lars Køber, Jawdat Abdulla
Aims We assessed the clinical characteristics and prognosis of chronic heart failure patients with improved ejection fraction (HFIEF) compared with persistently reduced ejection fraction (HFpREF) after evidence-based therapy. Methods and results We performed a meta-analysis including 24 eligible observational studies comparing 2663 HFIEF (≥5% left ventricular ejection fraction (LVEF) improvement) versus 8355 HFpREF patients who received recommended drug therapy, cardiac resynchronization therapy and/or intracardiac defibrillator...
January 1, 2018: European Journal of Preventive Cardiology
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