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

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.

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Tachycardia Electrophysiology Arrhythmia Hospital 40

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.

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Pacemaker CMS Arrhythmia Transplant 52

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).

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Tachycardia Pacemaker Electrophysiology Arrhythmia 40

Dr. Smith's ECG Blog

NOVEMBER 3, 2024

The CASE Continues: The patient had many episodes of NSVT ( Non-Sustained Ventricular Tachycardia ) — like th e one shown below in Figure-6. So, we are looking for signs of an underlying regular atrial rhythm ( with perhaps slight sinus arrhythmia ) — and it is much easier to find this when you know what you are looking for! (

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Electrophysiology Pacemaker Physiology Tachycardia 65

Circulation: Arrhythmia and Electrophysiology

SEPTEMBER 25, 2024

Circulation: Arrhythmia and Electrophysiology, Ahead of Print.

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Ablation Electrophysiology Tachycardia Arrhythmia 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.

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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

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.

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Pediatrics Tachycardia Academic Arrhythmia 40

Circulation: Arrhythmia and Electrophysiology

JANUARY 15, 2024

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

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Electrophysiology Tachycardia Arrhythmia Circulation 40

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.

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Arrhythmia Electrophysiology Tachycardia 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.

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Tachycardia Ablation Arrhythmia 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.

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Tachycardia Ablation Electrophysiology Arrhythmia 40

Circulation: Arrhythmia and Electrophysiology

JANUARY 26, 2024

Circulation: Arrhythmia and Electrophysiology, Ahead of Print.

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Electrophysiology Tachycardia Arrhythmia Circulation 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

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.

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Ablation Tachycardia Heart Disease Cardiomyopathy 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.

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Arrhythmia Sudden Cardiac Death Tachycardia Risk Factors 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.

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Congenital Heart Disease Congenital Heart Disease Electrophysiology 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

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

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.

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Arrhythmia Ablation Atrial Flutter Atrial Fibrillation 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.

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Atrial Fibrillation AFIB Ablation Technology 105

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).

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Tachycardia Physiology Ablation Arrhythmia 40

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

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

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

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

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

Dr. S. Venkatesan MD

JUNE 16, 2024

Any deviation or trespassing results in arrhythmia. The term, VT mapping has been in vogue in clinical electrophysiology for more than half a century, right from Dr.Josephson and Wellens’ days. Reference Alexios Hadjis , Antonio Frontera. 2020;13:e008651. DOI: 10.1161/CIRCEP.120.008651

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Ablation Physiology Technology Electrophysiology 52

All About Cardiovascular System and Disorders

OCTOBER 26, 2023

This is the proposed mechanism of precipitation of arrhythmias in Brugada syndrome during febrile episodes. There is a potential risk for drug challenge in that life threatening ventricular arrhythmias could be precipitated. Opinion is divided on the need for electrophysiology study. With proper precautions, risk can be reduced.

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Sudden Cardiac Death Atrial Fibrillation Electrophysiology Arrhythmia 52

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).

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Tachycardia AFIB Arrhythmia Coronary Artery Bypass Graft 52

Journal of Cardiovascular Electrophysiology

FEBRUARY 7, 2024

Chagas disease (ChD) was associated with increased rates of ventricular tachycardia and ventricular fibrillation in ICD patients only in the initial two periods, but there was no statistical difference in the last period. Time periods were chosen based on the establishment of the Arrhythmia Service in 2011.

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Defibrillator Sudden Cardiac Death Tachycardia Public Health 40

Journal of Cardiovascular Electrophysiology

DECEMBER 7, 2023

However, previous studies have shown that very high power short duration ablation (VHPSD) is also highly effective and fast to achieve PVI with potentially less arrhythmia recurrence compared to conventional radiofrequency ablation. Data comparing PFA to VHPSD-PVI is lacking.

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Ablation Pulmonary Arrhythmia Atrial Fibrillation 40

Journal of Cardiovascular Electrophysiology

JANUARY 10, 2024

ms after) and AF termination to atrial tachycardia (AT) or sinus rhythm (SR) in 12 patients (24%). After a blanking period of 6 weeks, recurrence of any atrial arrhythmia was documented in 26 patients (52%). Most arrhythmia recurrences were reentrant AT. to 202.2 ± 21.6 ms After a total of 1.46 ± 0.68

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Atrial Fibrillation Ablation Outpatient Arrhythmia 40

Dr. Smith's ECG Blog

MAY 14, 2022

Here is his ED ECG: Regular Wide Complex Tachycardia at a rate of 229 First : What do you want to do? Before getting into analysis, a regular wide complex tachycardia could be 1. ventricular tachycardia ( VT ) or 2. AV reciprocating tachycardia ( AVRT , antidromic WPW) or 3. Next : What do you think is the ECG diagnosis?

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Tachycardia Electrophysiology Blog Ablation 52

Dr. Smith's ECG Blog

APRIL 24, 2022

The ECG there reportedly showed an irregular tachycardia, and the patient was immediately referred to the emergency room. Here is her ECG on arrival: There is a wide complex tachycardia that is irregularly irregular (this is difficult to determine at these very high rates). Vitals were within normal limits other than heart rate.

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AFIB Tachycardia Atrial Fibrillation Blog 52

Dr. Smith's ECG Blog

NOVEMBER 25, 2022

He has a family history concerning for arrhythmia. Given the circumstances of his car crash, we presume it was due to an underlying arrhythmia. 2 weeks Here is the final electrophysiology note: It is unclear what precipitated his motor vehicle collision.

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Arrhythmia Blog Chest Pain Cardiac Arrest 52