18,879 results match your criteria Implantable Cardioverter-Defibrillators


Arrhythmogenic right ventricular cardiomyopathy: a focused update on diagnosis and risk stratification.

Heart 2021 May 14. Epub 2021 May 14.

Cardiology, UMC Utrecht, Utrecht, The Netherlands

Arrhythmogenic right ventricular cardiomyopathy (ARVC) is an inherited cardiomyopathy characterised by fibrofatty replacement of predominantly the right ventricle and high risk of ventricular arrhythmias and sudden cardiac death (SCD). Early diagnosis and accurate risk assessment are challenging yet essential for SCD prevention. This manuscript summarises the current state of the art on ARVC diagnosis and risk stratification. Read More

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Timely and individualized heart failure management: need for implementation into the new guidelines.

Clin Res Cardiol 2021 May 13. Epub 2021 May 13.

Klinik Für Innere Medizin III-Kardiologie, Angiologie Und Internistische Intensivmedizin, Universitätsklinikum Des Saarlandes, Kirrberger Strasse 100, 66421, Homburg, Germany.

Due to remarkable improvements in heart failure (HF) management over the last 30 years, a significant reduction in mortality and hospitalization rates in HF patients with reduced ejection fraction (HFrEF) has been observed. Currently, the optimization of guideline-directed chronic HF therapy remains the mainstay to further improve outcomes for patients with HFrEF to reduce mortality and HF hospitalization. This includes established device therapies, such as implantable defibrillators and cardiac resynchronization therapies, which improved patients' symptoms and prognosis. Read More

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[Structural requirements and prerequisites for outpatient implantation of defibrillators, devices for cardiac resynchronization and event recorders].

Herzschrittmacherther Elektrophysiol 2021 May 12. Epub 2021 May 12.

Kardiologie, Beta Klinik Bonn, Bonn, Deutschland.

The possibility of outpatient implantation of defibrillators, devices for cardiac resynchronization, and event recorders (collectively called cardiac implantable electronic devices, CIEDs) is becoming increasingly important. In Germany, only a few options for outpatient implantation are currently realized. Furthermore, there is a lack of uniform, recognized, and binding quality criteria. Read More

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Vagus Nerve Stimulation in Early Stage of Acute Myocardial Infarction Prevent Ventricular Arrhythmias and Cardiac Remodeling.

Front Cardiovasc Med 2021 26;8:648910. Epub 2021 Apr 26.

State Key Laboratory of Cardiovascular Disease, Arrhythmia Center, National Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.

To evaluate whether low level left vagus nerve stimulation (LLVNS) in early stage of myocardial infarction (MI) could effectively prevent ventricular arrhythmias (VAs) and protect cardiac function, and explore the underlying mechanisms. After undergoing implantable cardioverter defibrillators (ICD) and left cervical vagal stimulators implantation and MI creation, 16 dogs were randomly divided into three groups: the MI ( = 6), MI+LLVNS ( = 5), and sham operation ( = 5) groups. LLVNS was performed for 3 weeks. Read More

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Impact of Postshock Transcutaneous Pacing on Chest Compression Quality during Resuscitation: A Simulation-Based Pilot Study.

Emerg Med Int 2021 22;2021:5584632. Epub 2021 Apr 22.

Department of Medical Rescue, Poznan University of Medical Sciences, 7 Rokietnicka Street, Poznan 60-608, Poland.

Background: Successful defibrillation is commonly followed by a transient nonperfusing state. To provide perfusion in this stagnant phase, chest compressions are recommended irrespective of arrhythmia termination. Implantable cardioverters-defibrillators (ICD) used immediately after delivery of the shock are capable of pacing the heart, and this feature is commonly activated in these devices. Read More

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Subacute right ventricle perforation: a pacemaker lead complication.

BMJ Case Rep 2021 May 12;14(5). Epub 2021 May 12.

Cardiology Department, Charles Nicolle Hospital, Tunis, Tunisia.

Myocardial perforation is an uncommon but potentially life-threatening complication of pacemaker and implantable cardioverter-defibrillator. Myocardial perforation may be acute, subacute or chronic when it occurs within 24 hours of the device insertion; between 1 day and 30 days; and more than 30 days after implantation. This complication may occur in 1. Read More

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Intersection of Heart Failure and Pregnancy: Beyond Peripartum Cardiomyopathy.

Circ Heart Fail 2021 May 13:CIRCHEARTFAILURE120008223. Epub 2021 May 13.

Division of Cardiology, Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA (M.M.K.).

Heart failure (HF) is a leading cause of morbidity and mortality in pregnant women in the United States. Although peripartum cardiomyopathy is the most common diagnosis for pregnant women with HF, women with preexisting cardiomyopathies and systolic dysfunction are also at risk as the hemodynamic demands of pregnancy can lead to decompensation, arrhythmia, and rarely death. The differential diagnosis of HF in pregnancy is broad and includes Takotsubo or stress cardiomyopathy, exacerbation of a preexisting cardiomyopathy, such as familial cardiomyopathy, hypertrophic cardiomyopathy, arrhythmogenic right ventricular cardiomyopathy, or left ventricular noncompaction. Read More

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Pregnancy in patients with implantable cardiac defibrillators.

Herzschrittmacherther Elektrophysiol 2021 May 10. Epub 2021 May 10.

Department of Electrophysiology, St Bartholomews Hospital NHS Trust & Institute of Cardiovascular Science UCL, London, UK.

The number of patients of reproductive age with inherited and congenital heart disease receiving implantable cardiac defibrillators (ICD) is steadily increasing. Safely and effectively coordinating pregnancy in this high-risk cohort is important to optimise maternal-foetal outcomes. As members of the multidisciplinary team caring for pregnant patients with indications for ICD, cardiologists and electrophysiologists should be aware of the considerations and nuances involved in managing these patients. Read More

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Reuse of pacemakers and implantable cardioverter-defibrillators: systematic review, meta-analysis and quality assessment of the body of evidence.

Expert Rev Med Devices 2021 May 9. Epub 2021 May 9.

University of São Paulo - USP. Nursing School. Av. Dr. Enéas Carvalho de Aguiar, 419 - Cerqueira César, CEP 05403-000, São Paulo, SP, Brazil.

: Pacemakers (PMs) and implantable cardioverter-defibrillators (ICDs) have reduced mortality and improved the quality of life of cardiac patients. However, the high cost of these devices prevents their large-scale incorporation, particularly in low-income countries, where reusing explanted PMs/ICDs has become an alternative.: A systematic review and meta-analysis were conducted of studies that compare infection rates, device-related deaths, malfunction and premature battery depletion in patients with reused PM and ICD implants and those with new devices. Read More

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Implantable cardioverter defibrillator devices: when, how and who should discuss deactivation with patients: a systematic literature review.

BMJ Support Palliat Care 2021 May 7. Epub 2021 May 7.

Wolfson Palliative Care Research Centre, Hull York Medical School, University of Hull, Hull, UK.

Background: Implantable cardioverter defibrillators (ICDs) are used to treat life-threatening cardiac arrhythmias and prevent sudden cardiac arrest. As recipients age they may develop greater risk of dying as a result of progressive multimorbidity rather than sudden cardiac death. Defibrillation shocks may prolong an uncomfortable dying process. Read More

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[50 years of electrophysiology and cardiac pacing].

G Ital Cardiol (Rome) 2021 May;22(5):341-351

U.O.C. Cardiologia, Ospedale G.B. Grassi, Ostia (RM).

During the last 50 years a continuous improvement was observed in the field of cardiac pacing and electrophysiology as for as both technological and clinical aspects were concerned. We moved from the first recording of the His bundle electrogram to the identification of the various mechanisms and sites of supraventricular and ventricular tachyarrhythmias, to three-dimensional mapping and ablation of different reentry circuits and eventually to pulmonary vein isolation for the treatment of atrial fibrillation. As far as cardiac pacing is concerned, we moved from single chamber to dual chamber pacing, to ventricular pacing and implantable automatic defibrillators provided by sophisticated diagnostic and therapeutic algorithms and by remote control. Read More

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Clinical spectrum and long-term course of sustained ventricular tachycardia in pediatric patients: 10 years of experience.

Anatol J Cardiol 2021 May;25(5):313-322

Department of Pediatric Cardiology, University of Health Sciences, İstanbul Mehmet Akif Ersoy Thoracic and Cardiovascular Surgery Training and Research Hospital; İstanbul-Turkey.

Objective: Pediatric ventricular tachycardias (VTs) have heterogeneous etiology and different clinical features. This study aimed to evaluate the clinical spectrum and long-term course of pediatric sustained VTs.

Methods: Patients diagnosed as having sustained VT between 2010 and 2020 were evaluated retrospectively. Read More

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Pathobiology and evolving therapies of coronary artery vasospasm.

Proc (Bayl Univ Med Cent) 2021 Apr 21;34(3):352-360. Epub 2021 Apr 21.

Division of Cardiology, Department of Internal Medicine, Baylor Scott & White Medical Center, Temple, Texas.

Coronary artery vasospasm is a known cause of chest pain and requires a high level of clinical suspicion for diagnosis. It also remains in the differential diagnosis for patients presenting with type 2 myocardial infarction. There are few randomized controlled trials for guideline-based prevention and treatment for coronary artery vasospasm. Read More

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Surveillance Cultures and Infection in 230 Pacemaker and Defibrillator Generator Changes in Pediatric and Adult Congenital Patients.

World J Pediatr Congenit Heart Surg 2021 May;12(3):331-336

Section of Pediatric Cardiovascular Surgery, Cincinnati Children's, 177468UK HealthCare Kentucky Children's Hospital, Lexington, KY, USA.

Background: Postoperative infections can occur during surgical replacement of pulse generators for pacemakers and implantable cardioverter-defibrillators. The incidence of infection is poorly documented in children and patients with adult congenital heart disease. The utility of surveillance cultures obtained from device pocket swabs is unknown in this group. Read More

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Impact of atrial fibrillation/flutter on outcomes of patients with implantable cardioverter defibrillators: A sub-analysis of the Nippon Storm study.

J Cardiol 2021 Apr 30. Epub 2021 Apr 30.

Department of Internal Medicine, Faculty of Medicine, Kindai University, Osaka-Sayama, Japan. Electronic address:

Background: Implantable cardioverter-defibrillator and cardiac resynchronization therapy using a defibrillator (ICD/CRT-D) are established means of reducing mortality due to ventricular arrhythmia. Although atrial fibrillation/flutter (AF) is the most common cardiac arrhythmia in patients with heart disease, the impact of AF on the prognosis of patients with ICD/CRT-D remains controversial.

Methods And Results: We analyzed data from the Nippon Storm Study, a prospective observational study of 1570 patients that was conducted at 48 Japanese ICD centers. Read More

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Impact of Pulmonary Valve Replacement on Ventricular Arrhythmias in Patients With Tetralogy of Fallot and Implantable Cardioverter-Defibrillator.

JACC Clin Electrophysiol 2021 Apr 21. Epub 2021 Apr 21.

Auxerre Hospital, Auxerre, France.

Objectives: This study aimed to assess the impact of pulmonary valve replacement (PVR) on ventricular arrhythmias burden in a population of tetralogy of Fallot (TOF) patients with continuous cardiac monitoring by implantable cardioverter-defibrillators (ICDs).

Background: Sudden cardiac death is a major cause of death in TOF, and right ventricular overload is commonly considered to be a potential trigger for ventricular arrhythmias.

Methods: Data were analyzed from a nationwide French ongoing study (DAI-T4F) including all TOF patients with an ICD since 2000. Read More

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Scheduled versus alert transmissions for remote follow-up of cardiac implantable electronic devices: Clinical relevance and resource consumption.

Int J Cardiol 2021 Apr 27. Epub 2021 Apr 27.

Santa Maria del Carmine Hospital, Rovereto, TN, Italy.

Background: The remote follow-up of pacemakers and implantable cardiac defibrillators (ICDs) usually includes scheduled checks and alert transmissions. However, this results in a high volume of remote data reviews to be managed. We measured the relative contribution of scheduled and alert transmissions to the detection of relevant conditions, and the workload generated by their management. Read More

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Predictors of inappropriate shock in Brugada syndrome patients with a subcutaneous implantable cardiac defibrillator.

J Cardiovasc Electrophysiol 2021 Apr 29. Epub 2021 Apr 29.

Cardiology Department, Ospedale San Francesco, Nuoro, Italy.

Background: Subcutaneous implantable cardioverter defibrillators (S-ICDs) avoid complications secondary to transvenous leads, but inappropriate shocks (ISs) are frequent. Furthermore, IS data from patients with Brugada syndrome (BrS) with an S-ICD are scarce.

Objective: We aimed to establish the frequency and predictors of IS in this population. Read More

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Management of Implantable Cardioverter-Defibrillators during Pregnancy-A Systematic Review.

J Clin Med 2021 Apr 14;10(8). Epub 2021 Apr 14.

Department of Internal Medicine II, Paracelsus Medical University Salzburg, 5020 Salzburg, Austria.

Background: With the advent of implantable cardioverter-defibrillator (ICD) technology in recent decades, patients with inherited or congenital cardiomyopathy have a greater chance of survival into adulthood. Women with ICDs in this group are now more likely to reach reproductive age. However, pregnancy represents a challenge for clinicians, as no guidelines for the treatment of pregnant women with an ICD are currently available. Read More

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Out of hospital sudden death in a rural population: Low rates of icd underutilization among decedents.

Pacing Clin Electrophysiol 2021 Apr 28. Epub 2021 Apr 28.

Department of Psychology and Cardiovascular Disease at East Carolina University, Greenville, North Carolina.

Background: Implantable cardioverter defibrillators (ICDs) reduce mortality in patients at risk for life-threatening arrhythmias. Implantation of ICDs in rural or economically disadvantaged populations is suspected to be low. This study examined Out of Hospital Premature Natural Death (OHPND) and electronic medical record (EMR) data to identify rates of non-implantation of ICDs among decedents in eastern North Carolina. Read More

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Two Limitations of Subcutaneous Implantable Cardioverter Defibrillator in the Same Patient Warranting Its Explant.

Am J Case Rep 2021 Apr 29;22:e928983. Epub 2021 Apr 29.

Department of Internal Medicine, Division of Cardiovascular Medicine, University of Nebraska Medical Center, Omaha, NE, USA.

BACKGROUND A subcutaneous implantable cardioverter defibrillator (S-ICD) is preferred over a transvenous implantable cardioverter defibrillator (TV-ICD) in selected cases owing to a lower rate of lead-related complications such as infections and venous thrombosis. However, the S-ICD has its own limitations, including inappropriate shocks due to oversensed events, and the inability to treat ventricular tachycardia (VT) below a heart rate of 170 beats per minutes (bpm). We present a patient case which showed manifestations of both of these limitations, warranting explant of the device. Read More

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Risk stratification for sudden cardiac death in patients with heart failure : Emerging role of imaging parameters.

Herz 2021 Apr 28. Epub 2021 Apr 28.

Department of Cardiology, Ariana Hospital, 2080, Ariana, Tunisia.

Background: Heart failure with reduced ejection fraction is a common condition that has a poor prognosis. Accurate selection of patients with ischemic heart disease and idiopathic dilated cardiomyopathy, who are at risk of sudden cardiac death (SCD), remains a challenge. In these cases, current indications for implantable cardioverter-defibrillators (ICD) rely almost entirely on left ventricular ejection fraction. Read More

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Timing of pacemaker and ICD implantation in mutation carriers.

Open Heart 2021 04;8(1)

Heart and Lung Centre, Helsinki University Central Hospital, Helsinki, Finland.

Aims: cardiomyopathy is often associated with pathology in the cardiac conduction system necessitating device implantations. The aim was to study the timing and types of device implantations and need for re-implantations in mutation carriers.

Methods: We studied the hospital records of 60 mutation carriers concerning device implantations and re-implantations and their indications. Read More

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Sub-pocket small-hole drainage for pocket hematoma after cardiac device implantation.

Herz 2021 Apr 22. Epub 2021 Apr 22.

Department of Cardiology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, No 100, Haining Road, 200080, Shanghai, China.

Aims: Pocket hematoma is a common complication associated with cardiac device implantation, but there are limited strategies to deal with this problem. We aimed to evaluate the effectiveness of sub-pocket small-hole drainage (SSD) as a new way to manage severe pocket hematoma.

Methods: A total of 11 patients with severe pocket hematoma were selected for this case series study. Read More

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EHRA expert consensus statement and practical guide on optimal implantation technique for conventional pacemakers and implantable cardioverter-defibrillators: endorsed by the Heart Rhythm Society (HRS), the Asia Pacific Heart Rhythm Society (APHRS), and the Latin-American Heart Rhythm Society (LAHRS).

Europace 2021 Apr 20. Epub 2021 Apr 20.

Department of Cardiology, Hospital Santa Marta, Rua Santa Marta, 1167-024 Lisbon, Portugal.

With the global increase in device implantations, there is a growing need to train physicians to implant pacemakers and implantable cardioverter-defibrillators. Although there are international recommendations for device indications and programming, there is no consensus to date regarding implantation technique. This document is founded on a systematic literature search and review, and on consensus from an international task force. Read More

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Hypertrophic cardiomyopathy considerations for the managed care pharmacist.

Am J Manag Care 2021 Apr;27(6 Suppl):S118-S125

Vice President, Clinical Programs and Services, WellDyne, Lakeland, FL. Email:

Hypertrophic cardiomyopathy (HCM) is often seen in patients as an autosomal dominant genetic heart disease with a variable clinical course. It is characterized by left ventricular hypertrophy, and with some patients, there is no evidence of a genetic etiology or presence of HCM in family members. Young age at diagnosis and the presence of a pathogenic or likely pathogenic sarcomere variant predict greater lifelong risk for stroke, heart failure, ventricular arrhythmia, atrial fibrillation, or mortality. Read More

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[Perioprocedural mortality after ICD implantation].

Herz 2021 Apr 16. Epub 2021 Apr 16.

Klinik für Kardiologie, Evangelisches Klinikum Bethel, Bielefeld, Deutschland.

Background: Implantable cardioverter defibrillators (ICD) represent an established treatment in preventing sudden cardiac death in patients with indications for primary or secondary prophylaxis. As for all complex surgical procedures there remains a risk for the occurrence of complications including death also for ICD implantation. The aim of the present study was to analyze the procedure-related mortality in patients after ICD implantation using the data from the obligatory quality assurance program in North-Rhine/Westphalia. Read More

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Hyperthyroidism precipitating cardiac arrest in a patient with Brugada pattern.

BMJ Case Rep 2021 Apr 15;14(4). Epub 2021 Apr 15.

Critical care, Hamad Medical Corporation, Doha, Qatar.

A 38-year-old man previously healthy suffered an out-of-hospital cardiac arrest; he was resuscitated successfully and admitted to the intensive care unit. His initial ECG suggested a Brugada pattern; other laboratory tests revealed low potassium level, low Thyroid Stimulating Hormone (TSH) and high FT4. He was started on carbimazole for hyperthyroidism, along with other supportive care. Read More

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Advance care planning and end-of-life care in patients with an implantable cardioverter defibrillator: The perspective of relatives.

Palliat Med 2021 May 13;35(5):904-915. Epub 2021 Apr 13.

Department of Public Health, Erasmus MC, Erasmus University Medical Center Rotterdam, Rotterdam, The Netherlands.

Background: Little is known about the last phase of life of patients with implantable cardioverter defibrillators and the practice of advance care planning in this population.

Aim: To describe the last phase of life and advance care planning process of patients with an implantable cardioverter defibrillator, and to assess relatives' satisfaction with treatment and care.

Design: Mixed-methods study, including a survey and focus group study. Read More

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Frequent inappropriate implantable cardioverter defibrillator therapy was determined to be dual atrioventricular nodal non-reentrant tachycardia: A case report.

Medicine (Baltimore) 2021 Apr;100(14):e25370

Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian, China.

Rationale: Dual atrioventricular node non-reentrant tachycardia (DAVNNRT) is a rare arrhythmia. We present a case of inappropriate implantable cardioverter defibrillator (ICD) therapy caused by DAVNNRT. DAVNNRT is easily misdiagnosed as atrial fibrillation and is often identified as ventricular tachycardia (VT) by the supraventricular tachycardia-ventricular tachycardia (SVT-VT) discriminator of the ICD. Read More

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