20,155 results match your criteria Defibrillation & Cardioversion

Interactive 3D Human Heart Simulations on Segmented Human MRI Hearts.

Comput Cardiol (2010) 2021 Sep 10;48. Epub 2022 Jan 10.

School of Physics, Georgia Institute of Technology, Atlanta, GA, USA.

Understanding cardiac arrhythmic mechanisms and developing new strategies to control and terminate them using computer simulations requires realistic physiological cell models with anatomically accurate heart structures. Furthermore, numerical simulations must be fast enough to study and validate model and structure parameters. Here, we present an interactive parallel approach for solving detailed cell dynamics in high-resolution human heart structures with a local PC's GPU. Read More

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September 2021

Percutaneous Coil Embolization of Coronary Artery Fistula Complicated by Refractory Ventricular Fibrillation and Cardiogenic Shock.

JACC Case Rep 2022 Jun 15;4(12):715-718. Epub 2022 Jun 15.

Tennova Healthcare, Knoxville, Tennessee, USA.

We present a case of a 56-year-old patient with a symptomatic right coronary artery to pulmonary artery fistula who underwent coil embolization. Post-procedure, the patient developed ventricular fibrillation that was refractory to antiarrhythmic medications and numerous attempts at defibrillation. (). Read More

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Acta Clin Croat 2021 Dec;60(4):590-594

1Department of Anesthesiology, Resuscitation and Intensive Care, Dr. Josip Benčević General Hospital, Slavonski Brod, Croatia; Faculty of Medicine, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia; 2Department of Ear, Head and Neck Surgery, Dr. Josip Benčević General Hospital, Slavonski Brod, Croatia; Faculty of Medicine, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia; 3Department for Neurosurgery, Dr. Josip Benčević General Hospital, Slavonski Brod, Croatia.

Endotracheal intubation is the gold standard in inpatient treatment of cardiac arrest patients; however, there are conflicting research results in out-of-hospital conditions. This prospective study included 92 patients with confirmed cardiac arrest occurring outside a hospital facility, who fulfilled the inclusion criteria and whom the emergency ambulance team reached within 20 minutes from the event. Medical data on each patient (age, gender, cause of arrest, estimated time of arrest, time to arrival of the ambulance team, resuscitation commenced prior to arrival of the ambulance team, initial electrocardiographic rhythm, method of airway management, and success of resuscitation) were recorded. Read More

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December 2021

Cardiopulmonary Resuscitation in Obstetric Patient: Special Considerations.

J Obstet Gynaecol India 2022 Jun 30;72(3):192-200. Epub 2022 Jan 30.

Dr. Vasantarao Pawar Medical College, Hospital and Research Center, Nashik, India.

The prevalence of cardiac arrest in pregnant women varies from 1/20,000 to 1/50,000 pregnancies and is associated with high fetomaternal mortality. The pregnant mother is more susceptible to cardiac arrest as hypoxia is poorly tolerated. Hemorrhage, eclampsia, sepsis, and embolism are common causes of arrest. Read More

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Length of stay and cost of care associated with admissions for atrial fibrillation among patients with cancer.

BMC Cardiovasc Disord 2022 Jun 17;22(1):272. Epub 2022 Jun 17.

Section of Cardiac Electrophysiology, Division of Cardiovascular Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.

Background: The aim of this study is to assess the burden of AF-related hospitalizations inclusive of inflation-adjusted cost-of-care and length-of-stay (LOS) among cancer patients and the impact of direct current cardioversion (DCCV) on these outcomes.

Methods: Using the National Inpatient Sample (NIS), patients hospitalized with either a primary or secondary diagnosis of AF and comorbid cancer were identified and both cost of hospitalization and LOS were evaluated for each group. Subgroup analyses were performed for specific cancer types (breast, lung, colon, prostate and lymphoma), and those receiving DCCV. Read More

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Displaced AICD Lead Presenting as Hiccups: A Rare Complication.

J Investig Med High Impact Case Rep 2022 Jan-Dec;10:23247096221103380

State University of New York Upstate Medical University, Syracuse, USA.

Ventricular fibrillation can lead to sudden cardiac death. Automatic implantable cardioverter defibrillator (AICD) devices have shown to be highly successful in the termination of these arrhythmias and are a first-line modality of treatment for the prevention of sudden cardiac death. We present the case of a 69-year-old female with a history of paroxysmal atrial fibrillation on anticoagulation with apixaban and rate controlled with metoprolol who presented from home with a chief complaint of hiccups. Read More

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Prediction of Prehospital Change of the Cardiac Rhythm From Nonshockable to Shockable in Out-of-Hospital Patients With Cardiac Arrest: A Post Hoc Analysis of a Nationwide, Multicenter, Prospective Registry.

J Am Heart Assoc 2022 Jun 14;11(12):e025048. Epub 2022 Jun 14.

Department of Preventive Services, School of Public Health, Graduate School of Medicine Kyoto University Kyoto Japan.

Background Predicting a spontaneous rhythm change from nonshockable to shockable before hospital arrival in patients with out-of-hospital cardiac arrest can help emergency medical services develop better strategies for prehospital treatment. The aim of this study was to identify predictors of spontaneous rhythm change before hospital arrival in patients with out-of-hospital cardiac arrest and develop a predictive scoring system. Methods and Results We retrospectively reviewed data of eligible patients with out-of-hospital cardiac arrest with an initial nonshockable rhythm registered in a nationwide registry between June 2014 and December 2017. Read More

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A 39-Year-Old Woman with Ventricular Electrical Storm Treated with Emergency Cardiac Defibrillation Followed by Multidisciplinary Management.

Am J Case Rep 2022 Jun 14;23:e935710. Epub 2022 Jun 14.

Department of Invasive Cardiology, Medical University of Białystok, Białystok, Poland.

BACKGROUND Ventricular electrical storm (VES) is a treatment-resistant ventricular arrhythmia associated with high mortality. This report is of a 39-year-old woman with VES treated with emergency cardiac defibrillation followed by multidisciplinary management. CASE REPORT A 39-year-old woman, previously diagnosed with eosinophilia of unknown origin and recurrent non-sustained ventricular tachycardias, was admitted to the Department of Invasive Cardiology with VES after an initial antiarrhythmic approach, analgesia, and defibrillation in the Emergency Department. Read More

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Vaping tetrahydrocannabinol unmasks Brugada pattern and induces ventricular fibrillation in Brugada syndrome: a case report.

Eur Heart J Case Rep 2022 Jun 6;6(6):ytac200. Epub 2022 Jun 6.

Department of Cardiology, Mayo Clinic, 5777 East Mayo Boulevard, Phoenix, AZ 85054, USA.

Background: Fever, alcohol, and sodium channel blockers can unmask Brugada pattern and may also induce arrhythmias in Brugada syndrome. We report a case of unmasked Type-1 Brugada pattern presenting with ventricular fibrillation that was induced by a tetrahydrocannabinol vaping.

Case Summary: A 48-year-old male with a past medical history of hypertension treated with hydrochlorothiazide and back pain controlled with tetrahydrocannabinol vaping presented with sudden cardiac arrest from ventricular fibrillation, which was terminated with defibrillation. Read More

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Cardioversion of Post-Ablation Atrial Tachyarrhythmia with Ibutilide and Amiodarone: A Registry-Based Cohort Study.

Int J Environ Res Public Health 2022 May 28;19(11). Epub 2022 May 28.

Medical University of Vienna, Department of Emergency Medicine, Waehringer Guertel 18-20, 1090 Vienna, Austria.

Patients with recurrence of atrial tachyarrhythmia after catheter ablation for atrial fibrillation or atrial flutter constitute a rapidly growing cohort, but study-driven treatment recommendations are lacking. The present study aimed to compare the cardioversion success of ibutilide and amiodarone in patients with post-ablation atrial tachyarrhythmia. We included all episodes of post-ablation atrial tachyarrhythmia in patients treated with either intravenous ibutilide or amiodarone at an academic emergency department from 2010 to 2018. Read More

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Terminating spiral waves with a single designed stimulus: Teleportation as the mechanism for defibrillation.

Proc Natl Acad Sci U S A 2022 Jun 9;119(24):e2117568119. Epub 2022 Jun 9.

School of Physics, Georgia Institute of Technology, Atlanta, GA 30332.

We identify and demonstrate a universal mechanism for terminating spiral waves in excitable media using an established topological framework. This mechanism dictates whether high- or low-energy defibrillation shocks succeed or fail. Furthermore, this mechanism allows for the design of a single minimal stimulus capable of defibrillating, at any time, turbulent states driven by multiple spiral waves. Read More

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Association of Neighborhood-Level Material Deprivation With Atrial Fibrillation Care in a Single-Payer Health Care System: A Population-Based Cohort Study.

Circulation 2022 Jun 9:101161CIRCULATIONAHA122058949. Epub 2022 Jun 9.

University Health Network, Toronto, Canada (H.A.-Q., A.C.T.H., C.A.J., D.A.A., R.S.B., M.K.K., K.T., J.A.U., D.S.L.).

Background: There are limited data on the association of material deprivation with clinical care and outcomes after atrial fibrillation (AF) diagnosis in jurisdictions with universal health care.

Methods: This was a population-based cohort study of individuals ≥66 years of age with first diagnosis of AF between April 1, 2007, and March 31, 2019, in the Canadian province of Ontario, which provides public funding and prohibits private payment for medically necessary physician and hospital services. Prescription medications are subsidized for residents >65 years of age. Read More

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Barriers and facilitators for successful AED usage during in-situ simulated in-hospital cardiac arrest.

Resusc Plus 2022 Jun 2;10:100257. Epub 2022 Jun 2.

Department of Medicine, Randers Regional Hospital, Denmark.

Introduction: Early defibrillation within minutes increases survival after in-hospital cardiac arrest (IHCA). However, early defibrillation is often not achieved even though automated external defibrillators (AEDs) are available. We aimed to investigate how AEDs were used and the barriers and facilitators for successful use. Read More

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Cardiac electrical storm induced by anesthesia was successfully managed during surgery: a case report.

Ann Palliat Med 2022 May;11(5):1838-1843

Department of Anesthesiology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China.

Background: At present, the overall number of cardiac storms is small, there is a paucity of published literature describing cardiac storms in patients undergoing superficial surgery under general anesthesia (GA). In recent years, cardiac storm has attracted much clinical attention due to its high mortality, difficult management and poor prognosis.

Case Description: This paper reports a 57-year-old male with cardiac electrical storm. Read More

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High Internal Atrial Defibrillation Threshold Is Related to a High Risk of Recurrence After Catheter Ablation for Long-standing Persistent Atrial Fibrillation but not for Persistent Atrial Fibrillation.

Heart Lung Circ 2022 Jun 3. Epub 2022 Jun 3.

Department of Cardiology, Ogaki Municipal Hospital, Ogaki, Japan. Electronic address:

Background: The atrial defibrillation threshold (ADFT) for internal cardioversion is theoretically related to the critical mass for sustaining atrial fibrillation (AF).

Objective: This study aimed to investigate the association of ADFT for internal cardioversion with the outcome of catheter ablation for non-paroxysmal AF (non-PAF).

Methods: We included 368 consecutive patients who underwent first-time catheter ablation for non-PAF. Read More

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Paediatric defibrillation and the role of the layperson - Is it all in the voice?

Resusc Plus 2022 Jun 28;10:100253. Epub 2022 May 28.

Department of Epidemiology and Preventive Medicine, Monash University, Victoria, Australia.

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A method for continuous rhythm classification and early detection of ventricular fibrillation during CPR.

Resuscitation 2022 Jul 3;176:90-97. Epub 2022 Jun 3.

Center for Progress in Resuscitation, University of Washington, Seattle, WA, United States; Department of Medicine, University of Washington, Seattle, WA, United States; King County Emergency Medical Services, Seattle-King County Department of Public Health, Seattle, WA, United States.

Aim: We developed a method which continuously classifies the ECG rhythm during CPR in order to guide clinical care.

Methods: We conducted a retrospective study of 432 patients treated following out-of-hospital cardiac arrest. Continuous ECG sequences from two-minute CPR cycles were extracted from defibrillator recordings and further divided into five-second clips. Read More

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Effects of intravenous lipid emulsions on the reversal of pacing-induced ventricular arrhythmias and electrophysiological alterations in an animal model of ropivacaine toxicity.

Clin Toxicol (Phila) 2022 Jun 6:1-10. Epub 2022 Jun 6.

Electrophysiology Arrhythmia Unit, Hospital Monteprincipe Grupo HM Hospitales, University CEU-San Pablo, Madrid, Spain.

Introduction: Ropivacaine is considered to have a wider margin of cardiovascular safety. However, several reports of ventricular arrhythmias (VA) due to ropivacaine toxicity have been documented. Intravenous lipid emulsions (ILEs) have recently been used successfully in the treatment of local anesthetic intoxication. Read More

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Subcutaneous Versus Transvenous Implantable Defibrillator Therapy: A Systematic Review and Meta-Analysis of Randomized Trials and Propensity Score-Matched Studies.

J Am Heart Assoc 2022 Jun 3;11(11):e024756. Epub 2022 Jun 3.

Department of Cardiology Changi General Hospital Singapore.

Background Subcutaneous implantable cardioverter-defibrillators (S-ICDs) have been of great interest as an alternative to transvenous implantable cardioverter-defibrillators (TV-ICDs). No meta-analyses synthesizing data from high-quality studies have yet been published. Methods and Results An electronic literature search was conducted to retrieve randomized controlled trials or propensity score-matched studies comparing S-ICD against TV-ICD in patients with an implantable cardioverter-defibrillator indication. Read More

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Inappropriate Implantable Cardioverter-Defibrillation Detection of Ventricular Fibrillation Induced by Transcutaneous Electrical Nerve Stimulation.

J Innov Card Rhythm Manag 2022 May 15;13(5):5009-5012. Epub 2022 May 15.

Division of Cardiology, Queen's University, Kingston, Ontario, Canada.

We describe 2 cases of electromagnetic interference (EMI) with a transcutaneous electrical nerve stimulation (TENS) device in patients with implantable cardioverter-defibrillators (ICDs). Both patients were using DR-HO'S pain therapy system for chronic back pain (VGH Solutions Inc., Markham, ON, Canada). Read More

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A Systematic Review and Single-center Experience of Azygos Vein Defibrillator Lead Insertion.

J Innov Card Rhythm Manag 2022 May 15;13(5):4987-4993. Epub 2022 May 15.

Department of Internal Medicine, University of Iowa Health Care, Carver College of Medicine, Iowa City, IA, USA.

Defibrillation threshold (DFT) testing is performed in individuals with higher predicted risks of defibrillation failure. Many strategies have been explored to overcome the challenge of high DFT, including an insertion of a defibrillator lead into the azygos vein. We performed a systematic review of the literature to evaluate the safety and efficacy of azygos vein implantable cardioverter-defibrillator insertion for high DFT combined with the analysis of a single-center experience of the procedure at our institution. Read More

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An In-Silico model for evaluating the directional shock vectors in terminating and modulating rotors.

Comput Biol Med 2022 Jul 27;146:105665. Epub 2022 May 27.

Ryerson University, 350 Victoria St, Toronto, ON M5B 2K3, Canada.

Out-of-hospital cardiac arrest (OHCA) accounts for a majority of mortality worldwide. Survivability from an OHCA highly depends on timely and effective defibrillation. Most of the OHCA cases are due to ventricular fibrillation (VF), a lethal form of cardiac arrhythmia. Read More

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Resuscitation guideline highlights.

Curr Opin Crit Care 2022 06;28(3):284-289

University of Warwick, Coventry, England, CV4 7AL, University Hospitals Coventry and Warwickshire NHS Foundation Trust, Coventry CV2 2DX, UK.

Purpose Of Review: The purpose of this review was to give an overview of the most significant updates in resuscitation guidelines and provide some insights into the new topics being considered in upcoming reviews.

Recent Findings: Recent updates to resuscitation guidelines have highlighted the importance of the earlier links in the chain-of-survival aimed to improve early recognition, early cardiopulmonary resuscitation (CPR) and defibrillation. Empowering lay rescuers with the support of emergency medical dispatchers or telecommunicators and engaging the community through dispatching volunteers and Automated External Defibrillators, are considered key in improving cardiac arrest outcomes. Read More

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How technology can save lives in cardiac arrest.

Curr Opin Crit Care 2022 06 9;28(3):250-255. Epub 2022 Mar 9.

Department of Anaesthesia and Intensive Care and EMS, Maggiore Hospital Bologna, Bologna, Italy.

Purpose Of Review: Technology is being increasingly implemented in the fields of cardiac arrest and cardiopulmonary resuscitation. In this review, we describe how recent technological advances have been implemented in the chain of survival and their impact on outcomes after cardiac arrest. Breakthrough technologies that are likely to make an impact in the future are also presented. Read More

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Health inequities in out-of-hospital cardiac arrest.

Curr Opin Crit Care 2022 06;28(3):229-236

Warwick Medical School, University Hospitals Coventry and Warwickshire NHS Trust, Coventry, UK.

Purpose Of Review: Out-of-hospital cardiac arrest (OHCA) is a time-critical emergency in which a rapid response following the chain of survival is crucial to save life. Disparities in care can occur at each link in this pathway and hence produce health inequities. This review summarises the health inequities that exist for OHCA patients and suggests how they may be addressed. Read More

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Effective methods to enhance medical students' cardioversion and transcutaneous cardiac pacing skills retention - a prospective controlled study.

BMC Med Educ 2022 Jun 1;22(1):417. Epub 2022 Jun 1.

Department of Internal Medicine, University Medical, Center Hamburg-Eppendorf, Hamburg, Germany.

Background: Guideline-based therapy of cardiac arrhythmias is important for many physicians from the beginning of their training. Practical training of the required skills to treat cardiac arrhythmias is useful for acquiring these skills but does not seem sufficient for skill retention. The aim of this study was to compare different retention methods for skills required to treat cardiac arrhythmias with respect to the performance of these skills in an assessment. Read More

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The need for an adult intensive care unit boot camp for residents and fellows: a cross-sectional survey among intensive care unit directors.

J Nippon Med Sch 2022 May 30. Epub 2022 May 30.

SimTiki Simulation Center, John A Burns School of Medicine, University of Hawaii.

Background: The concept of "see one, do one, teach one" raises concerns regarding patient safety in the intensive care unit (ICU) and highlights the need for prior preparation of residents/fellows for ICU rotation. This study assessed the need for an adult pre-ICU "boot camp" training course.

Methods: An online questionnaire regarding the current ICU training and desirable course framework was distributed via e-mail to the ICU directors of 269 educational centers certified by the Japanese Society of Intensive Care Medicine. Read More

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Real-world clinical outcomes of percutaneous transluminal septal myocardial ablation for patients with drug-refractory hypertrophic obstructive cardiomyopathy: results from a retrospective multicenter registry of non-high-volume centers.

Heart Vessels 2022 May 31. Epub 2022 May 31.

Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe, Japan.

Percutaneous transluminal septal myocardial ablation (PTSMA) is a well-established interventional therapy for drug-refractory hypertrophic obstructive cardiomyopathy (HOCM) as an alternative to surgical myectomy. Although guidelines recommend that PTSMA should be performed in institutions with extensive experience, it is not centralized to such high-volume centers in real-world clinical practice. Thus, this study aimed to assess the feasibility of PTSMA in non-high-volume centers. Read More

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Subcutaneous and Transvenous ICDs: an Update on Contemporary Questions and Controversies.

Curr Cardiol Rep 2022 May 31. Epub 2022 May 31.

The Geisel School of Medicine at Dartmouth, Hanover, NH, USA.

Purpose Of Review: While the subcutaneous (S-) implantable cardioverter-defibrillator (ICDs) is an alternative to the transvenous (TV-) ICD in many patients, optimal use remains unclear. In this review, we summarize recent clinically relevant data on sensing algorithms, inappropriate shocks, defibrillation testing, and battery and electrode failures.

Recent Findings: Changes in sensing algorithms and S-ICD programming have significantly decreased inappropriate shock rates. Read More

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Case Report of Novel, Automatic Shocking Vector Adjustment Algorithm: A Life-Saving Feature of a Modern Defibrillator.

Perm J 2022 Apr 5;26(1):119-122. Epub 2022 Apr 5.

University of Tennessee Health Science Center, Memphis, TN, USA.

Background: Failed delivery of appropriate shocks against fatal dysrhythmias can be the result of low impedance on high-voltage leads. This malfunction might be missed on routine interrogation. We describe the case of a 66-year-old man with a high-voltage lead short circuit who was successfully rescued with the use of an overcurrent detection and automatic shocking vector adjustment algorithm. Read More

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