Frontiers in Cardiovascular Medicine

JULY 8, 2024

BackgroundHuman pluripotent stem cell-derived cardiomyocytes (hPSC-CMs) show tremendous promise for cardiac regeneration following myocardial infarction (MI), but their transplantation gives rise to transient ventricular tachycardia (VT) in large-animal MI models, representing a major hurdle to translation.

Pacemaker 52

Pacemaker CMS Arrhythmia Transplant 52

Journal of Cardiothoracic Surgery

APRIL 1, 2024

Atrial tachycardia (AT) originating from the left atrial appendage (LAA) is uncommon and the most difficult arrhythmia to eliminate. Therefore, we present the case of a 5-year-old girl with tachycardia-induced.

Tachycardia 40

Tachycardia Electrophysiology Arrhythmia Cardiomyopathy 40

DAIC

JULY 24, 2024

Volta Medical has announced it has entered into a Joint Development Agreement with GE Healthcare to enhance arrhythmia procedures with artificial intelligence (AI)-driven electrophysiology technologies. Our mission to combat complex heart rhythm diseases relies on optimizing interoperability.

Atrial Fibrillation 105

Atrial Fibrillation AFIB Ablation Technology 105

HeartRhythm

MARCH 12, 2024

A 15-year-old young male, presented to arrhythmia clinic with episodes of recurrent paroxysmal palpitations, lasting for several hours, requiring multiple admissions and DC cardioversion in the local hospital. What is the mechanism of the tachycardia? The 12 lead ECG (figure 1) and intracardiac recordings (figure 2) are shown below.

Tachycardia 40

Tachycardia Electrophysiology Arrhythmia Hospital 40

Circulation: Arrhythmia and Electrophysiology

DECEMBER 16, 2024

Circulation: Arrhythmia and Electrophysiology, Ahead of Print. Complex ventricular tachycardias involving the fascicular system (fascicular ventricular tachycardias [FVTs]) can be challenging. To summarize, 5 cases had prior ablation with 2 previously misdiagnosed as supraventricular tachycardia.

Tachycardia 40

Tachycardia Ablation Arrhythmia Electrophysiology 40

Journal of Cardiovascular Electrophysiology

JANUARY 13, 2025

Studies have shown that mutations in the RYR2 gene, which encodes the RyR2 protein, are linked to several cardiac arrhythmias, including catecholaminergic polymorphic ventricular tachycardia (CPVT), long QT syndrome (LQTS), calcium release deficiency syndrome (CRDS), and atrial fibrillation (AF).

Congenital Heart Disease 40

Congenital Heart Disease Electrophysiology Congenital Heart Disease 40

Circulation: Arrhythmia and Electrophysiology

SEPTEMBER 25, 2024

Circulation: Arrhythmia and Electrophysiology, Ahead of Print.

Ablation 40

Ablation Electrophysiology Tachycardia Arrhythmia 40

Circulation: Arrhythmia and Electrophysiology

FEBRUARY 28, 2024

Circulation: Arrhythmia and Electrophysiology, Ahead of Print. During early childhood, 50% of patients develop multifocal atrial tachycardia, a treatment-resistant tachyarrhythmia of unknown pathogenesis. BACKGROUND:GermlineHRASgain-of-function pathogenic variants cause Costello syndrome (CS).

Tachycardia 40

Tachycardia Pacemaker Electrophysiology Arrhythmia 40

Frontiers in Cardiovascular Medicine

JANUARY 8, 2025

IntroductionFocal atrial tachycardia (FAT) is predominant in the pediatric population. A 12-lead electrocardiogram revealed a narrow QRS complex tachycardia with a rate of 157 beats per minute and a prolonged RP relationship. Echocardiography indicated a severely reduced ejection fraction of 22%.

Tachycardia 40

Tachycardia Ablation Cardiomyopathy Electrocardiogram 40

Journal of Cardiovascular Electrophysiology

JANUARY 4, 2024

Abstract Introduction We report the case of an 18-year-old female with recurrent syncope that was discovered to have congenital long QT syndrome (LQTS) and episodes of a transiently short QT interval after spontaneous termination of polymorphic ventricular tachycardia.

Tachycardia 40

Tachycardia Arrhythmia Congenital 40

HeartRhythm

MAY 15, 2024

In the past decade, major advances were made in catheter ablation for arrhythmias and implantation of cardiac implantable electronic devices.1 1 Catheter ablation for atrial fibrillation (AF) and ventricular tachycardia (VT) has become the standard of care for many patients presenting with these arrhythmias.2–4

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Electrophysiology Atrial Fibrillation Ablation Arrhythmia 40

Circulation: Arrhythmia and Electrophysiology

JANUARY 26, 2024

Circulation: Arrhythmia and Electrophysiology, Ahead of Print.

Tachycardia 40

Tachycardia Electrophysiology Arrhythmia Circulation 40

Circulation: Arrhythmia and Electrophysiology

NOVEMBER 27, 2024

Circulation: Arrhythmia and Electrophysiology, Volume 17, Issue 12 , Page e011681, December 1, 2024.

Electrophysiology 40

Electrophysiology Tachycardia Arrhythmia Circulation 40

Circulation: Arrhythmia and Electrophysiology

JANUARY 15, 2024

Circulation: Arrhythmia and Electrophysiology, Volume 17, Issue 1 , Page e000090, January 1, 2024.

Tachycardia 40

Tachycardia Electrophysiology Arrhythmia Circulation 40

DAIC

DECEMBER 29, 2023

Unlike paroxysmal AF, which describes symptoms that last for seven days or fewer, persistent AF is a sustained arrhythmia that lasts for more than a week 1. Early treatment of persistent AF can reduce the risk of blood clots, stroke, and heart failure, and may prevent the disease from becoming permanent.

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Atrial Fibrillation Ablation Atrial Flutter Blood Clot 115

HeartRhythm

NOVEMBER 21, 2023

An eager electrophysiology fellow was sitting next to his mentor, on the plane ride back from the American College of Cardiology Scientific Sessions, putting together slides on highlights of the meeting. The results of the Multicenter Unsustained Tachycardia Trial (MUSTT) were presented at the late breaking sessions.

Arrhythmia 40

Arrhythmia Electrophysiology Tachycardia 40

Journal of Cardiovascular Electrophysiology

JANUARY 7, 2024

Abstract Background The mechanism of typical slow-fast atrioventricular nodal re-entrant tachycardia (AVNRT) and its anatomical and electrophysiological circuit inside the right atrium (RA) and Koch's Triangle (KT) are not well known. The mean SR cycle length (CL) was 784.1 ± 6 ms and the mean tachycardia CL was 361.2 ± 54 ms.

Tachycardia 40

Tachycardia Ablation Electrophysiology Arrhythmia 40

Journal of Cardiovascular Electrophysiology

JULY 16, 2024

Abstract Introduction Patients with viral myocarditis can present with challenging life-threatening arrhythmias. Catheter ablation can be a life-saving procedure in some patients with recurrent drug-refractory ventricular arrhythmias.

Tachycardia 40

Tachycardia Ablation Arrhythmia 40

All About Cardiovascular System and Disorders

MARCH 25, 2024

This measurement has been correlated with those made at electrophysiology study and may predict the potential risk of rapid anterograde conduction if the person develops atrial fibrillation. QT prolongation and the occurrence of ventricular arrhythmias with exercise are another important aspect of exercise testing in children.

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Exercise Pediatrics Congenital Tachycardia 52

Journal of Cardiovascular Electrophysiology

SEPTEMBER 23, 2024

Abstract Introduction Supraventricular tachycardia (SVT) is a common pediatric arrhythmia. Exclusion criteria were pre-excitation, ectopic atrial tachycardia, and hemodynamically significant heart disease. Beta blockers (BBs) and calcium channel blockers (CCBs) are used for treatment despite little data examining their use.

Pediatrics 40

Pediatrics Tachycardia Academic Arrhythmia 40

Circulation: Arrhythmia and Electrophysiology

JUNE 5, 2024

Circulation: Arrhythmia and Electrophysiology, Ahead of Print. BACKGROUND:Epicardial approach in ventricular tachycardia (VT) ablation is still regarded as a second-step strategy, due to the risk of complications.

Ablation 40

Ablation Tachycardia Heart Disease Cardiomyopathy 40

Journal of Cardiovascular Electrophysiology

MARCH 4, 2024

ECG data during the clinical arrhythmia (ventricular tachycardia [VT], upper left figure) is analyzed with an artificial intelligence algorithm which identifies a probable location of the source of the arrhythmia (left ventricular anterolateral papillary muscle, lower left figure). Use of the system was associated with a 19.0%

Arrhythmia 40

Arrhythmia Ablation Tachycardia Atrial Fibrillation 40

Frontiers in Cardiovascular Medicine

FEBRUARY 17, 2025

Procedural data and electrophysiology (EP) laboratory times were systematically collected and analyzed. The primary endpoint was any AF or atrial tachycardia recurrence at 12 and 24 month follow up.Resultsthe study cohort was composed by 138 patients (mean age was 5911 years, 38% female) and successful PVI was achieved in 100% of cases.

Atrial Fibrillation 52

Atrial Fibrillation Ablation Laboratory Electrophysiology 52

Journal of Cardiovascular Electrophysiology

NOVEMBER 6, 2024

We aimed to investigate the prevalence of NSVT in patients with ATTRwr-CA, and the association of NSVT with sustained ventricular arrhythmias (VA) and all-cause mortality.

Tachycardia 40

Tachycardia Heart Failure Arrhythmia Outcomes 40

HeartRhythm

MARCH 12, 2024

A 37-year-old woman with biventricular repair for pulmonary atresia and an intact ventricular septum was referred for an electrophysiological study in the context of recurrent atrial arrhythmias with multiple electrical cardioversions. Her clinical tachycardia was easily inducible and had a cycle length (TCL) of 340 ms.

Congenital Heart Disease 40

Congenital Heart Disease Congenital Heart Disease Electrophysiology 40

Journal of Cardiovascular Electrophysiology

FEBRUARY 8, 2024

Patients with Brugada syndrome who are asymptomatic and have no ventricular tachycardia/ventricular fibrillation inducibility by programmed electrical stimulation are at extremely low risk of experiencing late life-threatening arrhythmias. Methods Patients with BrS ( n  = 523; mean age, 51 ± 13 years; male, n  = 497) were enrolled.

Arrhythmia 40

Arrhythmia Sudden Cardiac Death Tachycardia Risk Factors 40

Journal of Cardiovascular Electrophysiology

JANUARY 30, 2025

ABSTRACT Background Recent advancements in ultra-high-density mapping (UHDM) featuring automated functionalities have enhanced our understanding of micro-reentrant atrial tachycardias (mAT) circuits and the precise localization of the origin. Low voltage areas (<0.1mV) were detected in all mAT cases and colocalized with the origin site.

Ablation 40

Ablation Tachycardia Arrhythmia Article 40

Journal of Cardiovascular Electrophysiology

OCTOBER 19, 2023

Although the QDOT MICRO™ Catheter was mainly designed for pulmonary vein isolation (PVI) its versatility to treat atrial fibrillation (AF) and other types of arrhythmias was recently evaluated by the FAST and FURIOUS study series and other studies and will be presented in this article.

Arrhythmia 40

Arrhythmia Ablation Atrial Flutter Atrial Fibrillation 40

Journal of Cardiovascular Electrophysiology

DECEMBER 10, 2024

Objective We report the feasibility, safety, and clinical efficacy of focal monopolar PFA in patients with the origin of their atrial arrhythmia in the SVC. Coronary vasospasm occurred (and quickly resolved after injection of nitroglycerin) in one patient during additional ablation of a focal atrial tachycardia at the coronary sinus ostium.

Arrhythmia 40

Arrhythmia Ablation Pulmonary Tachycardia 40

HeartRhythm

NOVEMBER 30, 2023

The advent of transseptal puncture has enabled the study of atrial fibrillation mechanisms, while epicardial access has enabled exploration of the epicardium in ventricular arrhythmias (ventricular tachycardia/ventricular fibrillation [VF]).1,2

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Atrial Fibrillation Electrophysiology Tachycardia Cardiomyopathy 40

Journal of Cardiovascular Electrophysiology

JANUARY 4, 2024

Abstract Introduction Dual atrioventricular nodal non-reentrant tachycardia (DAVNNT) is a rare and challenging-to-diagnose arrhythmia, without previous reports associating it with a leftward inferior extension (LIE).

Tachycardia 40

Tachycardia Physiology Ablation Arrhythmia 40

All About Cardiovascular System and Disorders

MARCH 30, 2024

This can be a source of cardiac arrhythmia as well. An important cause of arrhythmias in Ebstein’s anomaly is the presence of a right sided accessory atrioventricular pathway or WPW syndrome. Electrophysiological study will show that, and this pathway can be ablated. This portion is known as atrialized right ventricle.

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Tricuspid Arrhythmia Congenital Heart Disease Electrophysiology 52

Journal of Cardiovascular Electrophysiology

JANUARY 15, 2024

Case A 47-year-old male presented with atrial tachycardia 6 months post heart transplant. Electrophysiologic study demonstrated atrial fibrillation originating from native heart and propagated through atrio-atrial connections to the donor heart. This arrhythmia was successfully terminated with radiofrequency ablation.

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Atrial Fibrillation Heart Transplant Atrial Flutter Transplant 40

Journal of Cardiovascular Electrophysiology

NOVEMBER 7, 2024

ABSTRACT Introduction The aim of this study was to describe our experience and outcome of ablation therapy for arrhythmias in pediatrics at a tertiary care center. The data collected included type of arrhythmia, ablation technique, age and weight at ablation, procedure complications, medications used, and outcome assessment.

Pediatrics 40

Pediatrics Ablation Tachycardia Arrhythmia 40

Circulation: Arrhythmia and Electrophysiology

DECEMBER 21, 2023

Circulation: Arrhythmia and Electrophysiology, Ahead of Print. Colchicine did not prevent atrial arrhythmia recurrence at 2 weeks (31% versus 32%; hazard ratio [HR], 0.98 [95% CI, 0.59–1.61];P=0.92) BACKGROUND:Inflammation may promote atrial fibrillation (AF) recurrence after catheter ablation. 2.02];P=0.89). 1.99];P=0.55).CONCLUSIONS:Colchicine

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Atrial Fibrillation Ablation Chest Pain Atrial Flutter 40

EMS 12-Lead

APRIL 28, 2022

Initial vital signs include: NIBP 99/58 HR 150-160 (trend) RR 10 (spontaneous, but shallow) SpO2 86 (RA) BBS CTA The initial rhythm strip is attached: Figure 1 There is a wide complex tachycardia of varying morphology, amplitude, and R-R cycle length. Josephson’s Clinical Cardiac Electrophysiology: Techniques and Interpretations (6th ed).

Tachycardia 52

Tachycardia AFIB Arrhythmia Coronary Artery Bypass Graft 52

Journal of Cardiovascular Electrophysiology

AUGUST 20, 2024

Abstract Introduction We report the case of a 37-year-old male athlete, who developed during exercise atrial and ventricular arrhythmias. Conclusions The findings in our patient may suggest some increased ventricular excitability using programmed ventricular stimulation in CASQ2 polymorphic ventricular tachycardia patients.

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Exercise Tachycardia Arrhythmia Heart Disease 40