All About Cardiovascular System and Disorders

APRIL 17, 2024

Ventricular tachycardia is a potentially life threatening cardiac arrhythmia. On the ECG, ventricular tachycardia can be defined as three or more ventricular ectopic beats occurring in a sequence at a rate more than 100 per minute. Another rare form of ventricular tachycardia is bidirectional ventricular tachycardia.

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Tachycardia Defibrillator Congenital Myocardial Infarction 52

HeartRhythm

JUNE 3, 2024

Recent advancements in catheter ablation for structural ventricular tachycardia (VT), such as high-density mapping and cardiac imaging-based detection of target areas, have significantly improved the efficacy of ablation procedures.

Sudden Cardiac Death 40

Sudden Cardiac Death Tachycardia Ablation Defibrillator 40

DAIC

JUNE 19, 2024

Cingolani, director of Cardiogenetics and Preclinical Research in the Department of Cardiology in the Smidt Heart Institute at Cedars-Sinai, is exploring new ways to help patients with ventricular tachycardia (VT), a recurring, abnormally fast and irregular heartbeat that starts in the lower chambers, or ventricles, of the heart.

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Tachycardia Cardiac Arrest Ablation Research 128

HeartRhythm

APRIL 30, 2024

There is limited data regarding safety, electrophysiologic characteristics and arrhythmia substrate during ventricular tachycardia (VT) ablation in patients with prior aortic valve replacement (AVR).

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Aortic valve Electrophysiology Tachycardia Aortic 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

Journal of the American Heart Association

DECEMBER 8, 2023

The primary end point was syncope recurrence, and the secondary end point was the reduction of the ventricular arrhythmia score during exercise testing. The primary end point was syncope recurrence, and the secondary end point was the reduction of the ventricular arrhythmia score during exercise testing.

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Ablation Tachycardia Electrophysiology Outcomes 45

HeartRhythm

MARCH 7, 2024

The superior posterolateral right atrium (RA) is a common source of atrial tachycardias (ATs). Catheter ablation of such arrhythmias can be challenging due to the potential for right phrenic nerve (PN) injury (PNI).

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Tachycardia Ablation Cardiothoracic Arrhythmia 40

Frontiers in Cardiovascular Medicine

DECEMBER 14, 2023

This study investigated the association between concurrent typical atrial flutter and cavotricuspid isthmus (CTI) ablation and the recurrence of atrial arrhythmia. The data were obtained from a multicenter registry of cryoballoon ablation for AF ( n  = 2,689). All the patients with typical atrial flutter underwent CTI ablation.

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Atrial Flutter Atrial Fibrillation Ablation Arrhythmia 64

HeartRhythm

JUNE 27, 2024

A 21-year-old woman presented to arrhythmia clinic with episodes of recurrent paroxysmal rapid palpitations. The patient had undergone an electrophysiology study and radiofrequency ablation elsewhere and was subsequently referred to our centre. What is the mechanism of the tachycardia?

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Tachycardia Electrophysiology Ablation Arrhythmia 40

HeartRhythm

APRIL 30, 2024

Multiple risk factors for arrhythmia recurrence after Ventricular Tachycardia (VT) ablation have been identified. However, the cumulative impact of these risk factors has not been evaluated, making it challenging to predict these risks in patients with multiple coexisting conditions.

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Tachycardia Ablation Risk Factors Heart Disease 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

HeartRhythm

JULY 30, 2024

15% of all atrial fibrillation (AF) patients who undergo catheter ablation and plays significant roles in arrhythmia recurrence.1,2 1,2 Eliminating identified extra-PV triggers is an important part of an AF ablation procedure after pulmonary vein isolation (PVI) is achieved.3

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Aneurysm Ablation Atrial Fibrillation Pulmonary 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. The epicardial approach was considered useful if epicardial ablation was performed after epicardial mapping.

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Ablation Tachycardia Heart Disease Cardiomyopathy 40

Frontiers in Cardiovascular Medicine

JUNE 6, 2024

Cardio-oncology is a new field of interest in cardiology focusing on the detection and treatment of cardiovascular diseases, such as arrhythmias, myocarditis, and heart failure, as side-effects of chemotherapy and radiotherapy. The association between chemotherapeutic agents and arrhythmias has previously been established.

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Tachycardia Cancer Cardio Oncology Arrhythmia 40

HeartRhythm

APRIL 30, 2024

Belhassen’s ventricular tachycardia is an uncommon arrhythmia in infants. Originating near the left posterior fascicle, it is initiated by supraventricular ectopy or sinus tachycardia and is uniquely sensitive to verapamil. Use of verapamil in infants is controversial due to risk of severe hemodynamic compromise.

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Tachycardia Arrhythmia Cardiomyopathy Ablation 40

HeartRhythm

APRIL 30, 2024

Bipolar radiofrequency (RF) ablation is an adjunctive tool for VT ablation to treat deep intraseptal or mid-myocardial sources of arrhythmias. Bipolar ablation carries a risk of steam pops, conduction system injury, etc but iatrogenic VSD has not previously been described

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Ablation VSD Tachycardia Arrhythmia 40

HeartRhythm

APRIL 30, 2024

There are limited data on the use of Pulsed Field ablation (PFA) for ablation of ventricular arrhythmias.

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Ablation Tachycardia Arrhythmia 40

HeartRhythm

JANUARY 30, 2024

Radiofrequency catheter ablation of ventricular arrhythmias may be unsuccessful if the thermal destruction of myocardial tissue does not reach the critical part of the reentrant circuit.

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Ablation Tachycardia Arrhythmia 40

HeartRhythm

APRIL 30, 2024

Ablation of intramural ventricular arrhythmias (VAs) is challenging as conventional unipolar radiofrequency ablation (RFA) often fails to reach the depth of the arrhythmogenic substrate. An alternate solution to targeting mid-myocardial VAs is multipolar radiofrequency ablation (MPA).

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Ablation Tachycardia Arrhythmia 40

Journal of Cardiovascular Electrophysiology

OCTOBER 19, 2023

Abstract The QDOT MICRO™ Catheter is a novel open-irrigated contact force-sensing radiofrequency ablation catheter. It offers very high-power short-duration (vHPSD) ablation with 90 W for 4 s to improve safety and efficacy of catheter ablation procedures.

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Arrhythmia Ablation Atrial Flutter Atrial Fibrillation 40

HeartRhythm

APRIL 30, 2024

Scar-mediated ventricular tachycardia (VT) is reliant on critical isthmuses of conduction to propagate the arrhythmia. Close-coupled extrastimulation has the ability to expose regions of functional delay within the scar that may be relevant for reentry and has been proposed as a novel strategy for substrate ablation.

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Tachycardia Ablation Arrhythmia 40

HeartRhythm

APRIL 30, 2024

The unique properties of pulse field ablation (PFA) are potentially better suited as a treatment modality for ventricular arrhythmias.

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Ablation Tachycardia Arrhythmia 40

HeartRhythm

APRIL 30, 2024

Catheter ablation of right atrial (RA) arrhythmias near the right phrenic nerve (PN) can cause phrenic nerve injury (PNI). Previously described techniques to displace the PN all require epicardial access.

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Ablation Cardiothoracic Tachycardia Arrhythmia 40

DAIC

DECEMBER 29, 2023

Outcomes of ablation with the FARAPULSE PFA System – a nonthermal treatment in which electric fields selectively ablate heart tissue – will be compared to outcomes following use of anti-arrhythmic drug (AAD) therapy, which is commonly prescribed for patients living with persistent AF. The company now anticipates U.S.

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Atrial Fibrillation Ablation Atrial Flutter Blood Clot 115

Frontiers in Cardiovascular Medicine

JUNE 3, 2024

Surgical modifications and hemodynamic changes increase the susceptibility to arrhythmias, impacting morbidity and mortality rates, with arrhythmias being the leading cause of hospitalizations and sudden deaths. Macroreentrant atrial tachycardias, particularly cavotricuspid isthmus-dependent flutter, are frequently reported.

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Congenital Heart Disease Congenital Heart Disease Arrhythmia 81

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 Cardiomyopathy Arrhythmia 40

HeartRhythm

APRIL 30, 2024

Introduction: Pulsed-Field Ablation(PFA) of myocardium has high selectivity and is less likely to damage blood vessels and nerves, suggesting a good prospect in the ablation of arrhythmia. Our team reported the safety and efficacy of PFA in the treatment of atrioventricular nodal reentrant tachycardia.

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Ablation Atrial Fibrillation Tachycardia Arrhythmia 40

HeartRhythm

APRIL 30, 2024

Wild-type transthyretin amyloid cardiomyopathy (ATTRwt-CM) is often accompanied by atrial fibrillation (AF), atrial flutter (AFL), and atrial tachycardia (AT), which are difficult to control because beta-blockers and antiarrhythmic drugs can worsen heart failure (HF).

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Atrial Flutter Atrial Fibrillation Tachycardia Cardiomyopathy 40

HeartRhythm

APRIL 30, 2024

Establishing an accurate diagnosis plays an important role in the management of patients presenting for ventricular tachycardia (VT) ablation. The type of heart disease often determines the substrate and the strategy for VT ablation.

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Arrhythmia Ablation Tachycardia Heart Disease 40

Circulation: Arrhythmia and Electrophysiology

DECEMBER 21, 2023

Circulation: Arrhythmia and Electrophysiology, Ahead of Print. BACKGROUND:Inflammation may promote atrial fibrillation (AF) recurrence after catheter ablation. The first dose of the study drug was administered within 4 hours before ablation. 1.61];P=0.92) or at 3 months following ablation (14% versus 15%; HR, 0.95 [95% CI, 0.45–2.02];P=0.89).

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Atrial Fibrillation Ablation Chest Pain Atrial Flutter 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).

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Tachycardia Physiology Ablation Arrhythmia 40

HeartRhythm

APRIL 30, 2024

Patients with adult congenital heart disease are at risk for ventricular arrhythmias (VAs) or sudden cardiac death.

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Sudden Cardiac Death Congenital Heart Disease Tachycardia Congenital 40

HeartRhythm

APRIL 30, 2024

Coronary venous ethanol infusion/ablation (CVEA) has been utilized to treat ventricular arrhythmias refractory to catheter ablation.

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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. Results Forty-five consecutive cases of successful ablation of typical slow-fast AVNRT were included.

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Tachycardia Ablation Electrophysiology Arrhythmia 40

HeartRhythm

APRIL 30, 2024

Substrate mapping for ventricular arrhythmia (VA) is demanding and technically challenging. Electrocardiographic imaging (ECGi) precisely locates focal arrhythmia origins. Activation mapping is limited by VT's hemodynamic instability. 3D reconstruction from cardiac MRI and CT guides or replaces catheter-based maps.

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Tachycardia Arrhythmia Ablation 40

DAIC

MARCH 5, 2024

a global leader in cardiac arrhythmia treatment and part of Johnson & Johnson MedTech , today announced European CE mark approval of the VARIPULSE Platform for the treatment of symptomatic drug refractory recurrent paroxysmal atrial fibrillation ( AF ) using pulsed field ablation (PFA).

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Ablation Atrial Fibrillation Atrial Flutter Pulmonary 59

HeartRhythm

APRIL 30, 2024

Catheter ablation of ventricular tachycardia after the first shock reduced the risk of death or worsening heart failure (wHF). A threshold of ATPs that might warrant an ablation procedure before ICD shocks is unknown.

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Defibrillator Heart Failure Ablation Arrhythmia 40