17,094 results match your criteria Atrial Tachycardia


Epicardial Interventions: Impact of Liposomal Bupivacaine on Postprocedural Management (The EPI-LIBRE Study).

Circ Arrhythm Electrophysiol 2020 Jun 4. Epub 2020 Jun 4.

Kansas City Heart Rhythm Institute & Research Foundation, Overland Park, KS.

- Electrophysiological procedures such as epicardial ventricular tachycardia (VT) ablation and Lariat left atrial appendage ligation (LAA) that involve the epicardial space are typically associated with significant postoperative pain due to mechanical irritation and associated inflammation. There is an unmet need for an effective pain management strategy in this group of patients. We studied how this impacts patient comfort and duration of hospitalization and other associated comorbidities related to pericardial access. Read More

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http://dx.doi.org/10.1161/CIRCEP.119.007425DOI Listing

Interesting response of wide QRS tachycardia with LBBB morphology to atrial overdrive pacing. What is the mechanism?

Pacing Clin Electrophysiol 2020 Jun 4. Epub 2020 Jun 4.

Department of Cardiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, 695011, India.

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http://dx.doi.org/10.1111/pace.13972DOI Listing

Electrophysiological significance of the inter-atrial conduction including cavotricuspid isthmus during atrial fibrillation.

J Physiol 2020 Jun 4. Epub 2020 Jun 4.

Yonsei University Health System, Seoul, Republic of Korea.

Key Points: The interatrial conduction, including Bachmann's bundle, the posterior septal conduction, the anterior septal conduction, and the cavo-tricuspid isthmus, contributes to the maintenance mechanisms of atrial fibrillation in a 3D-biatrial model. The interatrial conduction ablation including a cavo-tricuspid isthmus ablation significantly affects the wave dynamics of atrial fibrillation (AF) and facilitates the AF termination or atrial tachycardia conversion of the AF after the circumferential pulmonary vein isolation. Additional cavo-tricuspid isthmus ablation after the circumferential pulmonary vein isolation improves long-term rhythm outcome after clinical AF catheter ablation. Read More

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http://dx.doi.org/10.1113/JP279660DOI Listing

One atrial pacing, three responses: What is the mechanism?

J Cardiovasc Electrophysiol 2020 Jun 4. Epub 2020 Jun 4.

Cardiology Department, Hospital General Universitario "Gregorio Marañón". Complutense University of Madrid. Madrid, Spain.

A 32-year-old woman without relevant clinical antecedents presented with a crisis of paroxysmal tachycardic palpitations. A 12-lead electrocardiogram (ECG) showed a regular tachycardia with a QRS duration of 120 ms, a right bundle branch block pattern and a frontal plane QRS axis of -90° (Figure 1. Top). Read More

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http://dx.doi.org/10.1111/jce.14601DOI Listing

"Atrial Fibrillation and Premature Ventricular Complexes" - is there a unifying diagnosis?

J Cardiovasc Electrophysiol 2020 Jun 4. Epub 2020 Jun 4.

Royal Prince Alfred Hospital, Sydney, Australia.

A 64-year-old male presented with a 2-year history of palpitations and light-headedness. Referral for electrophysiological assessment was prompted by a Holter monitoring report of "frequent ventricular ectopic beats (>21,000/24hr) with repetitive runs of atrial fibrillation" (Fig 1). Resting echocardiogram and stress testing were normal. Read More

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http://dx.doi.org/10.1111/jce.14600DOI Listing

COVID-19 and cardiac arrhythmias: a global perspective on arrhythmia characteristics and management strategies.

J Interv Card Electrophysiol 2020 Jun 3. Epub 2020 Jun 3.

Cooper University Hospital, Camden, NJ, USA.

Background: Cardiovascular and arrhythmic events have been reported in hospitalized COVID-19 patients. However, arrhythmia manifestations and treatment strategies used in these patients have not been well-described. We sought to better understand the cardiac arrhythmic manifestations and treatment strategies in hospitalized COVID-19 patients through a worldwide cross-sectional survey. Read More

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http://dx.doi.org/10.1007/s10840-020-00789-9DOI Listing

Utility of Contact Impedance Mapping in Differentiating the Mechanism of Focal Atrial Tachycardia.

J Innov Card Rhythm Manag 2019 May 15;10(5):3642-3650. Epub 2019 May 15.

Section of Electrophysiology, Division of Cardiovascular Disease, The Institute for Heart and Vascular Health, Einstein Medical Center, Philadelphia, PA, USA.

Contact impedance mapping can differentiate focal atrial tachyarrhythmias from macroreentry (atrial flutter) and localized reentry (atrioventricular nodal reentry tachycardia) by detecting different patterns of regional unipolar tissue impedance distribution. Specifically, focal atrial tachycardia (AT) is characterized by the finding of a contiguous low-impedance area (CLIA) adjacent to the site of origin, surrounded by normal tissue impedance levels. However, it remains unclear whether or not this finding could distinguish different mechanisms of focal AT. Read More

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http://dx.doi.org/10.19102/icrm.2019.100501DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7252825PMC

Prenatal diagnosis of a right coronary artery to right atrial fistula with a giant coronary artery aneurysm: A case report.

J Clin Ultrasound 2020 Jun 3. Epub 2020 Jun 3.

Department of ultrasonography, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, Zhengzhou, Henan, China.

Coronary artery fistula (CAF) is a rare cardiac anomaly. Here, we diagnosed a right coronary artery-right atrium fistula with giant coronary artery aneurysm (CAA) via fetal echocardiography at 35 weeks' gestation. An urgent caesarean delivery was performed at 36 weeks' gestation because CAA caused mitral obstruction, and fetal atrial flutter was present. Read More

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http://dx.doi.org/10.1002/jcu.22873DOI Listing

Inappropriate implantable cardioverter-defibrillator shocks in repaired tetralogy of fallot patients: Prevalence and electrophysiological mechanisms.

Int J Cardiol Heart Vasc 2020 Jun 26;28:100543. Epub 2020 May 26.

Internal Medicine, Division of Cardiology, Columbia University Irving Medical Center, 622 W 168th St, New York, NY 10032, USA.

Background: Patients with Tetralogy of Fallot (TOF) are at increased risk for sudden cardiac death, often undergo implantable cardioverter defibrillator (ICD) implantation at younger ages, and are at greater risk of experiencing inappropriate shocks. We investigated occurrences of ICD shocks in TOF patients to identify prevalence, characteristics associated with inappropriate shocks, and therapeutic interventions after inappropriate shocks.

Methods: Records of patients with repaired TOF and ICD implantation who were followed at Columbia University Irving Medical Center between 1/1/2000 and 5/1/2019 were analyzed. Read More

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http://dx.doi.org/10.1016/j.ijcha.2020.100543DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7256636PMC

Results of a survey concerning atrial fibrillation ablation strategies in Poland.

Kardiol Pol 2020 Jun 2. Epub 2020 Jun 2.

Background: Catheter ablation is an effective treatment for patients with atrial fibrillation (AF). Despite increasing availability of the procedure, current treatment patterns of invasive AF treatment in Poland are unknown.

Aim: The aim of the study was to assess contemporary AF ablation approaches in Poland, such as: target population, patients' characteristics, ablation techniques, procedural results and complication rates. Read More

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http://dx.doi.org/10.33963/KP.15407DOI Listing

Long-term results of irrigated bipolar radiofrequency ablation in patients with recurrent arrhythmia after failed unipolar ablation.

Medicine (Baltimore) 2020 May;99(21):e19970

Department of Cardiology, Poznań University of Medical Sciences.

Introduction: The RF ablation of ventricular tachycardia (VT) or atrial flutter (AFl) can be unsuccessful due to lack of lesion transmurality. Bipolar ablation (BA) is more successful than unipolar ablation (UA). The purpose of our study was to investigate the long-term effect of BA ablation in patients after failed UA. Read More

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http://dx.doi.org/10.1097/MD.0000000000019970DOI Listing

Cardiac Sarcoidosis: What's Bad for the Ventricle is Bad for the Atria.

Authors:
Rahul N Doshi

J Innov Card Rhythm Manag 2018 Feb 15;9(2):3022-3024. Epub 2018 Feb 15.

Division of Cardiology, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA.

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http://dx.doi.org/10.19102/icrm.2018.090205DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7252772PMC
February 2018

Highlights from Heart Rhythm 2018: Novel Developments in the Field of Electrophysiology.

Authors:
Claudio Tondo

J Innov Card Rhythm Manag 2018 Sep 15;9(9):3324-3326. Epub 2018 Sep 15.

Heart Rhythm Center at Monzino Cardiac Centre, IRCCS, Milan, Italy.

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http://dx.doi.org/10.19102/icrm.2018.090910DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7252774PMC
September 2018

Atrial Antitachycardia Pacing in Complex Congenital Heart Disease: A Case Series.

J Innov Card Rhythm Manag 2018 Mar 15;9(3):3079-3083. Epub 2018 Mar 15.

University of Iowa Carver College of Medicine, Iowa City, IA, USA.

Among the congenital heart disease (CHD) population, intra-atrial reentrant tachycardia (IART) is a common sequela resulting from anatomical anomalies and surgical scars that significantly increases morbidity and mortality. Atrial antitachycardia pacing (ATP) delivered by atrial antitachycardia devices (ATDs) has been used to treat IART in the CHD population. However, there remains limited data on the safety and efficacy of ATP, as well as on comparisons of its effects amongst different CHD subtypes. Read More

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http://dx.doi.org/10.19102/icrm.2018.090304DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7252767PMC

Atrial Fibrillation and Ventricular Tachycardia in a Patient with Cardiac Sarcoidosis.

J Innov Card Rhythm Manag 2018 Feb 15;9(2):3016-3021. Epub 2018 Feb 15.

Division of Cardiology, Virginia Commonwealth University Pauley Heart Center, Richmond, VA, USA.

Cardiac sarcoidosis (CS) can cause atrial and ventricular arrhythmias, conduction system disease, and congestive heart failure. The use of advanced imaging modalities including cardiac magnetic resonance and positron emission tomography with 2-deoxy-2-[fluorine-18]fluoro-D-glucose can be helpful in evaluating the extent of disease and response to treatment. The management of CS patients can be challenging, requiring immunosuppression medications, antiarrhythmic drugs, implantable cardiac devices, and cardiac ablation procedures. Read More

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http://dx.doi.org/10.19102/icrm.2018.090203DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7252664PMC
February 2018

Gene Therapy for the Treatment of Cardiac Arrhythmias: Current and Emerging Applications.

J Innov Card Rhythm Manag 2018 Dec 15;9(12):3440-3445. Epub 2018 Dec 15.

Department of Cardiology, Northwestern Memorial Hospital, Chicago, IL, USA.

In this review, we examine the current state of gene therapy for the treatment of cardiac arrhythmias. We describe advances and challenges in successfully creating and incorporating gene vectors into the myocardium. After summarizing the current scientific research in gene transfer technology, we then focus on the most promising areas of gene therapy at this time, which is the treatment of atrial fibrillation and ventricular tachyarrhythmias. Read More

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http://dx.doi.org/10.19102/icrm.2018.091204DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7252777PMC
December 2018

Zero-fluoroscopy Radiofrequency Redo Ablation of Atrial Tachycardia Following Pulmonary Vein Isolation: A Tale of Two Systems.

J Innov Card Rhythm Manag 2018 Nov 15;9(11):3385-3389. Epub 2018 Nov 15.

Electrophysiology Department, Bryan Heart Institute, Lincoln, NE, USA.

Regular atrial tachycardia (AT) is one of the most important proarrhythmic complications that may occur following left atrial pulmonary vein isolation (PVI). These tachycardias that develop after atrial fibrillation ablation may lead to worse symptoms than those from the original arrhythmia existing prior to the index ablation procedure. Ablation of various types of supraventricular tachycardias without the use of fluoroscopy has been shown to be feasible in both children and adults using three-dimensional mapping systems. Read More

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http://dx.doi.org/10.19102/icrm.2018.091101DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7252657PMC
November 2018

Fluoroless Rapid Mapping and Catheter Ablation of Intra-atrial Reentry Tachycardia in a Patient with Mustard Operation Using the Ensite™ Precision™ Electroanatomic Mapping System.

Authors:
Bhavya Trivedi

J Innov Card Rhythm Manag 2017 Sep 15;8(9):2844-2848. Epub 2017 Sep 15.

Florida Hospital for Children, Orlando, FL.

Catheter ablation of atrial arrhythmias in patients with atrial baffle palliation for dextro-transposition of the great arteries (requiring the Mustard or Senning procedures) can be challenging cases to complete, with long procedure times and high degrees of associated radiation exposure. Many ablation procedures can now be done using the fluoroless technique. The new EnSite™ Precision™ cardiac mapping system (Abbott Laboratories, Chicago, IL, USA) allows for the rapid mapping of arrhythmias and the performance of non-fluoroscopic procedures. Read More

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http://dx.doi.org/10.19102/icrm.2017.080901DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7252724PMC
September 2017

An Elusive and Deceptive Tachycardia.

J Innov Card Rhythm Manag 2017 Feb 15;8(2):2626-2627. Epub 2017 Feb 15.

Icahn School of Medicine at Mount Sinai, New York, NY.

A wide-complex tachycardia was induced with rapid atrial pacing, with intermittent ventriculoatrial block and QRS alternans. A short/negative HV interval was observed, and premature ventricular complexes resulted in the termination of the tachycardia. The findings at electrophysiology study were consistent with an antidromic re-entrant tachycardia involving a nodo-fascicular/ventricular connection. Read More

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http://dx.doi.org/10.19102/icrm.2017.080202DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7252649PMC
February 2017

Resynchronization Therapy During Sustained Ventricular Tachycardia.

Authors:
Sergio F Cossú

J Innov Card Rhythm Manag 2017 Jan 15;8(1):2590-2593. Epub 2017 Jan 15.

The Arrhythmia Center at the Charlotte Heart and Vascular Institute, Port Charlotte, FL.

A 62-year-old gentleman with a history of an ischemic cardiomyopathy and previous implantation of a biventricular cardioverter-defibrillator presented with complaints of palpitations and a wide complex ventricular paced rhythm at 120 bpm. This was originally thought to be ventricular tracking of an atrial tachycardia at the upper tracking rate, as the patient remained hemodynamically stable for three consecutive days in this rhythm. On the third day, the patient's implantable cardioverter-defibrillator (ICD) was interrogated and it was found that he was indeed in a sustained ventricular tachycardia with biventricular pacing being delivered as a function of the ventricular sense response feature. Read More

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http://dx.doi.org/10.19102/icrm.2017.080103DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7252794PMC
January 2017

Mapping and Ablation of Retrograde Conduction During a Nearly Incessant Pacemaker-mediated Tachycardia in a Patient with Third-degree Atrioventricular Block.

J Innov Card Rhythm Manag 2019 Apr 15;10(4):3620-3622. Epub 2019 Apr 15.

FateBeneFratelli Hospital, Naples, Italy.

Patients with third-degree atrioventricular block implanted with a dual-chamber pacemaker in DDD mode can develop pacemaker-mediated tachycardias if retrograde ventriculoatrial (VA) conduction is present. Programming a long post-VA refractory period to avoid tachycardia initiation can be contraindicated if these patients have a good atrial response from exercise testing and require a high maximum tracking rate to allow for a proper response to sensed atrial rhythms. We report a case of a patient in whom mapping and ablation of retrograde conduction during the pacemaker-mediated rhythm was the only solution to allow both the programming of a high tracking rate and the elimination of tachycardia induction. Read More

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http://dx.doi.org/10.19102/icrm.2019.100402DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7252714PMC

Patent Foramen Ovale as a Rare Focus of Origination of Atrial Tachycardia.

J Innov Card Rhythm Manag 2019 Apr 15;10(4):3612-3616. Epub 2019 Apr 15.

Department of Cardiology, Crozer-Chester Medical Center, Upland, PA, USA.

Supraventricular tachycardia refers to a group of arrhythmias whose mechanism involves tissues from the His bundle or above. Repetitive focal atrial tachycardia (AT) (FAT) accounts for less than 10% of supraventricular tachycardia cases. FAT originating from the patent foramen ovale (PFO) has not been well-described and is a rarely reported phenomenon to date. Read More

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http://dx.doi.org/10.19102/icrm.2019.100405DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7252791PMC

Consumer-facing Diagnostic Sensors in a Patient with Implantable Cardioverter-Defibrillator.

J Innov Card Rhythm Manag 2019 Sep 15;10(9):3822-3825. Epub 2019 Sep 15.

Center for Body Computing, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA.

Since its introduction in 2015, the Apple Watch (Apple Inc., Cupertino, CA, USA) has been purchased by an estimated 60 million consumers and boasts algorithms cleared by the United States Food and Drug Administration able to detect bradycardia, tachycardia, and atrial fibrillation, with the newest version of the device also allowing for real-time electrocardiogram acquisition. This case offers potentially the first demonstration of an Apple Watch correctly detecting atrial fibrillation with an implantable cardioverter-defibrillator confirming the accuracy of the detection from stored electrograms. Read More

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http://dx.doi.org/10.19102/icrm.2019.100907DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7252641PMC
September 2019

Catheter Ablation of Scar-mediated Ventricular Tachycardia: Are Substrate-based Approaches Replacing Mapping?

Authors:
Richard H Hongo

J Innov Card Rhythm Manag 2019 Jun 15;10(6):3707-3715. Epub 2019 Jun 15.

Atrial Fibrillation and Complex Arrhythmia Center, California Pacific Medical Center, San Francisco, CA, USA.

Scar-mediated ventricular tachycardia (VT) is a recognized cause of morbidity and mortality in patients with ischemic cardiomyopathy and other cardiomyopathies such as nonischemic cardiomyopathy, arrhythmogenic right ventricular cardiomyopathy, and cardiac sarcoidosis. Implantable cardioverter-defibrillator (ICD) therapy improves survival but does not prevent the onset of recurrent VT or associated morbidity from ICD shocks. While randomized controlled trials have demonstrated advantages of scar-mediated VT ablation in comparison with antiarrhythmic drugs, procedural success has remained overall modest at between 50% and 70%. Read More

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http://dx.doi.org/10.19102/icrm.2019.100603DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7252775PMC

Patient Selection for Epicardial Ablation-Part I: The Role of Epicardial Ablation in Various Cardiac Disease States.

J Innov Card Rhythm Manag 2019 Nov 15;10(11):3897-3905. Epub 2019 Nov 15.

Section of Cardiac Electrophysiology, Division of Cardiology, University of Colorado Denver, Aurora, CO, USA.

Epicardial catheter ablation is most commonly performed following unsuccessful endocardial ablation. Given the frequency of epicardial substrates in certain cardiomyopathic disease states, however, a combined endocardial-epicardial approach should be considered as a primary treatment strategy. Although epicardial ablation is primarily deployed in patients with ventricular arrhythmias, the role of epicardial approaches in supraventricular tachycardias (eg, atrial fibrillation, inappropriate sinus tachycardia, and-rarely-accessory pathways) is growing, with continued advances being made. Read More

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http://dx.doi.org/10.19102/icrm.2019.101104DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7252769PMC
November 2019

Biophysical Properties, Efficacy, and Lesion Characteristics of a New Linear Cryoablation Catheter in a Canine model.

Heart Rhythm 2020 May 26. Epub 2020 May 26.

Mayo Clinic/St. Marys Campus, Rochester, Minnesota, USA. Electronic address:

Background: The cryoballoon (CB) catheter is an established tool for isolation of the pulmonary veins (PVI), however, its use is limited to that end.

Objective: This study was conducted to investigate biophysical properties of a newly developed linear cryoablation catheter (LC) for creation of linear ablation lesions in an in vivo model.

Methods: Twenty-nine (14 acutely ablated, 15 chronically followed) dogs underwent cryoablation using the LC. Read More

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http://dx.doi.org/10.1016/j.hrthm.2020.05.028DOI Listing

Simple differential entrainment screens ablation strategy for slow-fast atrioventricular nodal reentrant tachycardia.

Pacing Clin Electrophysiol 2020 May 29. Epub 2020 May 29.

Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan.

Background: Ablation of slow-fast atrioventricular nodal reentrant tachycardia (S/F-AVNRT) is occasionally refractory. We hypothesized that the site of ablation for curing S/F-AVNRT can be screened by simple differential atrial entrainment pacing (EP) from the high right atrium (HRA) and proximal coronary sinus (prox-CS).

Methods: We enrolled 43 patients with S/F-AVNRT who underwent successful differential atrial EP followed by successful ablation of slow pathway (SP) using step-wise approach, and compared the atrio-His (A-H) interval at the recording of His bundle immediately after EP from the HRA [A-H(HRA)], with the interval between atrial deflection at the prox-CS and His bundle electrogram after EP at an identical cycle length from the prox-CS [A-H (prox-CS)]. Read More

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http://dx.doi.org/10.1111/pace.13946DOI Listing

Tetrodotoxin-Sensitive Neuronal-Type Na Channels: A Novel and Druggable Target for Prevention of Atrial Fibrillation.

J Am Heart Assoc 2020 Jun 29;9(11):e015119. Epub 2020 May 29.

Dorothy M. Davis Heart and Lung Research Institute College of Medicine The Ohio State University Wexner Medical Center Columbus OH.

Background Atrial fibrillation (AF) is a comorbidity associated with heart failure and catecholaminergic polymorphic ventricular tachycardia. Despite the Ca-dependent nature of both of these pathologies, AF often responds to Na channel blockers. We investigated how targeting interdependent Na/Ca dysregulation might prevent focal activity and control AF. Read More

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http://dx.doi.org/10.1161/JAHA.119.015119DOI Listing

Pulmonary vein atrial tachycardia: do we really need to isolate or freeze?

J Interv Card Electrophysiol 2020 May 28. Epub 2020 May 28.

Centre for Heart Rhythm Disorders, University of Adelaide and Royal Adelaide Hospital, Adelaide, SA, 5000, Australia.

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http://dx.doi.org/10.1007/s10840-020-00777-zDOI Listing

His bundle pacing: troubleshooting during follow-up.

Herzschrittmacherther Elektrophysiol 2020 May 28. Epub 2020 May 28.

Klinik für Innere Medizin - Kardiologie, Diabetologie & Nephrologie, Evangelisches Klinikum Bethel, Burgsteig 13, 33617, Bielefeld, Germany.

Follow-up of pacemaker systems for His bundle pacing (HBP) requires electrocardiogram (ECG) knowledge and creative thinking. This relates to ventricular threshold measurement in which it can be difficult to distinguish between selective HBP and loss of capture with pseudofusion since, by definition, intrinsic QRS complexes and those selectively paced via the His bundle look identical. Threshold testing in HBP is best performed in unipolar pacing mode, recording of a 12-lead ECG and pacing in VVI mode significantly above the intrinsic rate. Read More

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http://dx.doi.org/10.1007/s00399-020-00693-9DOI Listing

Incidence and Risk Factors for Atrial Fibrillation Recurrence after Ablation of Nodal and Atrioventricular Reentrant Tachycardia: A Meta-analysis.

Cureus 2020 Apr 25;12(4):e7824. Epub 2020 Apr 25.

Cardiology, Rhode Island University Hospital - Warren Alpert Medical School of Brown University, Rhode Island, USA.

Introduction Atrioventricular nodal reentrant tachycardia (AVNRT) and atrioventricular reentrant tachycardia (AVRT) are frequently associated with atrial fibrillation (AF). Targeting the slow or accessory pathways has been advocated as therapy for coexisting AF. But in practice, AF has frequently recurred after ablation, possibly because of various risk factors. Read More

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http://dx.doi.org/10.7759/cureus.7824DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7249774PMC

Long-term safety and effectiveness of paroxysmal atrial fibrillation ablation using a porous tip contact force-sensing catheter from the SMART SF trial.

J Interv Card Electrophysiol 2020 May 27. Epub 2020 May 27.

NYU Langone Medical Center New York University, New York, NY, USA.

Purpose: The prospective, multicenter SMART SF trial demonstrated the acute safety and effectiveness of the 56-hole porous tip irrigated contact force (CF) catheter for drug-refractory paroxysmal atrial fibrillation (PAF) ablation with a low primary adverse event rate (2.5%), leading to FDA approval of the catheter. Here, we are reporting the long-term effectiveness and safety results that have not yet been reported. Read More

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http://dx.doi.org/10.1007/s10840-020-00780-4DOI Listing

The value of extensive catheter linear ablation on persistent atrial fibrillation (the CLEAR-AF Study).

Int J Cardiol 2020 May 24. Epub 2020 May 24.

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

Background: The ablation therapy for persistent atrial fibrillation (PerAF) is still a challenge due to the high recurrence rate. This study was aimed to investigate the value of extensive linear ablation with contact force sensing techniques for PerAF.

Methods: A total of 214 patients with PerAF were enrolled in five centers. Read More

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http://dx.doi.org/10.1016/j.ijcard.2020.05.032DOI Listing

Procedural outcomes and learning curve of cardiac arrhythmias catheter ablation using remote magnetic navigation: Experience from a large-scale single-center study.

Clin Cardiol 2020 May 26. Epub 2020 May 26.

Department of Cardiology, Shanghai Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.

Background: Remote magnetic navigation (RMN)-guided ablation has become an inspiring method of catheter ablation for tachyarrhythmias.

Hypothesis: Data from a large-scale single center may provide further insight into the safety of and the learning curve for RMN-guided ablation.

Methods: A total of 1003 catheter ablation procedures using RMN for conditions including supraventricular ventricular tachycardia, atrial tachyarrhythmias, and premature ventricular contraction/ventricular tachycardia (PVC/VT) were retrospectively analyzed from an ablation registry. Read More

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http://dx.doi.org/10.1002/clc.23391DOI Listing

Recent advances in three-dimensional electroanatomical mapping guidance for the ablation of complex atrial and ventricular arrhythmias.

J Interv Card Electrophysiol 2020 May 26. Epub 2020 May 26.

Cardiology and Arrhythmology Clinic, University Hospital "Ospedali Riuniti Umberto I - Lancisi - Salesi", Ancona, Italy.

Purpose: To provide a brief overview of some relevant technological advances in the field of three-dimensional electroanatomical mapping (3D-EAM) that have recently entered the clinical arena and their role in guiding catheter ablation (CA) of complex atrial and ventricular arrhythmias.

Methods: In this technical report, we describe the general features of three novel algorithms featured in the updated CARTO PRIME™ mapping module for CARTO®3 version 7 3D-EAM system (Biosense Webster Inc., Diamond Bar, CA, USA): local activation time (LAT) hybrid, coherent mapping and map replay modules. Read More

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http://dx.doi.org/10.1007/s10840-020-00781-3DOI Listing

Circulating electrolytes and the prevalence of atrial fibrillation and supraventricular ectopy: The Atherosclerosis Risk in Communities (ARIC) study.

Nutr Metab Cardiovasc Dis 2020 Mar 27. Epub 2020 Mar 27.

Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, Minneapolis, MN, USA.

Background And Aims: Evaluating associations of circulating electrolytes with atrial fibrillation (AF) and burden of supraventricular arrhythmias can give insights into arrhythmia pathogenesis.

Methods And Results: We conducted a cross-sectional analysis of 6398 participants of the Atherosclerosis Risk in Communities (ARIC) study, ages 71-90, with data on serum electrolytes (magnesium, calcium, potassium, phosphorus, chloride, sodium). Prevalence of AF was determined from electrocardiograms and history of AF hospitalizations. Read More

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http://dx.doi.org/10.1016/j.numecd.2020.03.010DOI Listing

Ventricular Fibrillation Caused by Primary Carnitine Deficiency.

J Emerg Med 2020 May 21. Epub 2020 May 21.

Department of Emergency Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan.

Background: Primary carnitine deficiency (PCD) is a rare but potentially life-threatening genetic disorder if left untreated. Although some patients remain asymptomatic lifelong, a few patients present with hepatic encephalopathy, hypoglycemia, cardiomyopathy, dysrhythmia, and even sudden death.

Case Report: A 25-year-old woman with PCD collapsed suddenly while eating lunch. Read More

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http://dx.doi.org/10.1016/j.jemermed.2020.04.024DOI Listing

Predictors of zero X ray procedures in supraventricular arrhythmias ablation.

Int J Cardiovasc Imaging 2020 May 23. Epub 2020 May 23.

Second Division of Cardiology, Cardiac-Thoracic-Vascular Department, New Santa Chiara Hospital, Azienda Ospedaliero Universitaria Pisana, Via Paradisa 2, 56124, Pisa, Italy.

To evaluate predictors of zero-X ray procedures for supraventricular arrhythmias (SVT) using minimally fluoroscopic approach (MFA). Patients referred for RF catheter ablation of SVT were admitted for a MFA with an electro-anatomical navigation system or a conventional fluoroscopic approach (ConvA). Exclusion criterion was the need to perform a transseptal puncture. Read More

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http://dx.doi.org/10.1007/s10554-020-01884-8DOI Listing

Pauses in atrial rhythm in a patient with limb-girdle muscular dystrophy: A case report.

J Electrocardiol 2020 May 11;60:209-211. Epub 2020 May 11.

Department of Cardiovascular Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan.

A 58-year-old woman with a history of multi-origin atrial tachycardia and limb-girdle muscular dystrophy was treated for presyncope caused by pauses in atrial rhythm. A dual-chamber pacemaker was implanted. The low-voltage area extended broadly, but 10-V pacing could not capture the large right atrium, including the right atrial appendage, except the coronary sinus ostium. Read More

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http://dx.doi.org/10.1016/j.jelectrocard.2020.05.003DOI Listing

Stellate Ganglion Blockade for the Treatment of Refractory Ventricular Arrhythmias.

JACC Clin Electrophysiol 2020 May 26;6(5):562-571. Epub 2020 Feb 26.

Duke Cardiology, Duke University Medical Center, Durham, North Carolina; Duke Clinical Research Institute, Durham, North Carolina.

Objectives: This study sought to describe our institutional experience with establishing a neurocardiology service in an attempt to provide autonomic modulation as a treatment for ventricular arrhythmias (VAs).

Background: Treatment-refractory VAs are commonly driven and exacerbated by heightened sympathetic tone.

Methods: Among patients referred to the neurocardiology service (August 2016 to December 2018), we performed ultrasound-based, bilateral, temporary stellate ganglion blockade (SGB) in 20 consecutive patients. Read More

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http://dx.doi.org/10.1016/j.jacep.2019.12.017DOI Listing

How to View Entrainment When Mapping Complex Atrial Tachycardias.

Authors:
Joshua M Cooper

JACC Clin Electrophysiol 2020 May;6(5):533-536

Section of Electrophysiology, Temple University Health System, Philadelphia, Pennsylvania. Electronic address:

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http://dx.doi.org/10.1016/j.jacep.2020.02.004DOI Listing

From High-Density Mapping to Low-Density Mapping: Outlining the Active Circuit in Complex Atrial Re-Entrant Tachycardias.

JACC Clin Electrophysiol 2020 May 29;6(5):523-532. Epub 2020 Jan 29.

Arrhythmia Unit, Department of Cardiology, Hospital de la Santa Creu i Sant Pau, CIBERCV, Institut de Recerca HSCSP-IIB Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain.

Objectives: The aim of this study was to describe a mapping approach for ablation of complex atrial re-entrant tachycardias (ARTs) in which high-density activation maps are transformed into low-density activation maps displaying only the active part of the tachycardia circuit.

Background: High-density activation maps during complex ARTs are challenging to interpret because they include the activation patterns of active and passive circuits. Entrainment mapping provides the identification of the active tachycardia circuit. Read More

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http://dx.doi.org/10.1016/j.jacep.2019.12.001DOI Listing

Direct Thrombin Inhibition During Left-Sided Catheter Ablation: More Than Just an Alternative?

JACC Clin Electrophysiol 2020 May;6(5):491-493

Electrophysiology Section, Duke Heart Center, Duke University Medical Center, Durham, North Carolina.

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http://dx.doi.org/10.1016/j.jacep.2020.02.011DOI Listing

Autonomic Modulation of Cardiac Arrhythmias: Methods to Assess Treatment and Outcomes.

JACC Clin Electrophysiol 2020 May;6(5):467-483

Cardiovascular Research Center, Massachusetts General Hospital, Boston, Massachusetts; Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, Massachusetts. Electronic address:

The autonomic nervous system plays a central role in the pathogenesis of multiple cardiac arrhythmias, including atrial fibrillation and ventricular tachycardia. As such, autonomic modulation represents an attractive therapeutic approach in these conditions. Notably, autonomic modulation exploits the plasticity of the neural tissue to induce neural remodeling and thus obtain therapeutic benefit. Read More

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http://dx.doi.org/10.1016/j.jacep.2020.02.014DOI Listing

Atrial tachycardia circuits include low voltage area from index atrial fibrillation ablation relationship between RF ablation lesion and AT.

J Cardiovasc Electrophysiol 2020 May 21. Epub 2020 May 21.

LIRYC, University of Bordeaux, CHU de Bordeaux, Bordeaux-Pessac, France.

Background: No study to date has used high-density mapping to investigate the relationship between prior radiofrequency (RF) lesions for persistent atrial fibrillation (PsAF) ablation and subsequent atrial tachycardias (ATs).

Methods: From 41 consecutive patients who underwent AT ablation at a second procedure using an ultrahigh-density mapping system, 22 patients (38 ATs) were included as they also had complete maps with a multipolar catheter and three-dimensional (3D) mapping system at the time of the first PsAF ablation procedure. We, therefore, compared voltage maps from the first AF ablation procedure to those from the subsequent AT ablation procedure, as well as the lesion sets used for AF ablation vs the activation patterns in AT during the second procedure. Read More

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http://dx.doi.org/10.1111/jce.14576DOI Listing
May 2020
2.958 Impact Factor

Overcoming challenges in the management of arrhythmogenic right ventricular cardiomyopathy.

Kardiol Pol 2020 May 19;78(5):386-395. Epub 2020 May 19.

Arrhythmogenic right ventricular cardiomyopathy (ARVC) appears in most patients to be an inherited disease characterized by fibrofatty replacement of myocytes extending from the epicardium to the endocardium in the right ventricle. The disease process results in life‑threatening ventricular arrhythmias and ventricular dysfunction. In the absence of a gold‑standard diagnostic test and despite the progress in imaging techniques, ARVC is often misdiagnosed and earlier detection of the disease is challenging. Read More

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http://dx.doi.org/10.33963/KP.15374DOI Listing

Comparison of Arrhythmia Detection by 24-Hour Holter and 14-Day Continuous Electrocardiography Patch Monitoring.

Acta Cardiol Sin 2020 May;36(3):251-259

School of Medicine, Fu Jen Catholic University, New Taipei City.

Background: Although 24-hour Holter monitoring is routinely used for patients with suspected paroxysmal arrhythmia, its sensitivity in detecting such arrhythmias is insufficient.

Methods: We compared a 14-day electrocardiography (ECG) monitor patch - a single-use, noninvasive, waterproof, continuous monitoring patch - with a 24-hour Holter monitor in 32 consecutive patients with suspected arrhythmia.

Results: The 14-day ECG patch was well tolerated, and its rates of detection of relevant arrhythmias on days 1, 3, 7, and 14 were 13%, 28%, 47%, and 66%, respectively. Read More

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http://dx.doi.org/10.6515/ACS.202005_36(3).20190903ADOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7220965PMC

Cardiac and neuronal HCN channelopathies.

Pflugers Arch 2020 May 18. Epub 2020 May 18.

School of Medicine and Surgery, Milan Center for Neuroscience (NeuroMI), University of Milano-Bicocca, Monza, Italy.

Hyperpolarization-activated cyclic nucleotide-gated (HCN) channels are expressed as four different isoforms (HCN1-4) in the heart and in the central and peripheral nervous systems. In the voltage range of activation, HCN channels carry an inward current mediated by Na and K, termed I in the heart and I in neurons. Altered function of HCN channels, mainly HCN4, is associated with sinus node dysfunction and other arrhythmias such as atrial fibrillation, ventricular tachycardia, and atrioventricular block. Read More

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http://dx.doi.org/10.1007/s00424-020-02384-3DOI Listing

The Year in Review in Cardiac Electrophysiology.

Circ Arrhythm Electrophysiol 2020 May 18. Epub 2020 May 18.

Stanford University, Stanford, CA.

In the past year there have been numerous advances in our understanding of arrhythmia mechanisms, diagnosis, and new therapies. We have seen advances in basic cardiac electrophysiology with data suggesting that secretoneurin may be a biomarker for patients at risk of ventricular arrhythmias and we have learned of the potential role of a natriuretic peptide receptor-C in atrial fibrosis and the role of an atrial specific two-pore potassium channel TASK-1 as a therapeutic target for atrial fibrillation. We have seen studies demonstrating role of sensory neurons in sleep apnea-related atrial fibrillation and the association between bariatric surgery and atrial fibrillation ablation outcomes. Read More

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http://dx.doi.org/10.1161/CIRCEP.120.008733DOI Listing