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Pulmonary vein isolation (PVI) is the most effective treatment for rhythm control. Additional advantages include providing electrophysiology lab personnel with a lead-free working environment and avoiding radiation exposure for both patients and physicians. It has initially been performed with fluoroscopic catheter guiding.
This research evaluates the effect of balloon pulmonary angioplasty (BPA) on cardiac electrophysiological changes in patients with chronic thromboembolic pulmonary hypertension (CTEPH).
At present we do not have any reliable intra-procedural electrophysiologic predictors of long-term success of AF ablation other than pulmonary vein isolation. We evaluated selected intraprocedural pulmonary vein characteristics that may be helpful in future guidance of persistent AF ablation.
Infants with severe valvar pulmonary stenosis (PS) are palliated by transcatheter balloon pulmonary valvuloplasty or surgical pulmonary valvotomy. Either strategy effectively relieves the obstruction, but one long-term sequela is pulmonary regurgitation (PR) necessitating pulmonary valve replacement.
Methods and Results A total of 323 consecutive FAT patients who underwent electrophysiological study and radiofrequency catheter ablation between January 2011 and March 2023 were selected for this study. Young adults had a higher proportion of FAT originating from the superior vena cava and pulmonary veins.
The international, multi-center trial will provide clinical evaluation of Cortex's 510(k) cleared Ablamap System with electrographic flow (EGF) and newly released Ablacath Mapping Catheter basket mapping catheter to identify extra-pulmonary vein EGF sources.
Isolation line placed at the pulmonary vein antrum (PVA) area is superior to ostium level in atrial fibrillation (AF) control. However, less is known about the electrophysiological characteristics of PVA.
Circulation: Arrhythmia and Electrophysiology, Ahead of Print. BACKGROUND:High-power short-duration ablation has shown impressive efficacy and safety for pulmonary vein isolation (PVI); however, initial efficacy results with very high power short-duration ablation were discouraging. or acute reconnection (4% versus 14%;P=0.3)
1 PFA is conventionally used for pulmonary vein isolation (PVI), but interest has arisen in delivering linear lesions to the posterior wall2 and mitral isthmus.3 Pulsed field ablation (PFA) is a novel modality shown to be safe and efficient.1 3 The durability of these lesion sets has not been well evaluated.
Two articles and an accompanying editorial in Heart Rhythm , the official journal of the Heart Rhythm Society, the Cardiac Electrophysiology Society , and the Pediatric & Congenital Electrophysiology Society , published by Elsevier , address the controversy and recommend shortening the blanking period.
a developer of cellular and cell-derived therapeutics for the treatment of cardiovascular and pulmonary diseases, reported it has submitted a 510(k) for approval of its patented Morph DNA Steerable Introducer Sheath. mtaschetta-millane Wed, 07/31/2024 - 07:00 July 31, 2024 — BioCardia, Inc. ,
A company statement reported that its PFA System is indicated for the isolation of pulmonary veins in the treatment of drug-refractory, recurrent, symptomatic, paroxysmal (i.e., The FARAPULSE PFA System is indicated for the isolation of pulmonary veins in the treatment of drug-refractory, recurrent, symptomatic, paroxysmal (i.e.,
Epicardial Marshall bundle (MB) are frequently utilized in left atrial tachycardias (LATs) post atrial fibrillation (AF) ablation with pulmonary vein isolation and substrate modification.
In this study, AEPVR (acute epicardial pulmonary vein reconnection) was differentiated in characteristics from endocardial conduction gap in acute PVR (left). We aimed to investigate the prevalence, locations, electrogram characteristics, and ablation parameters related to acute epicardial pulmonary vein reconnection (AEPVR).
Abstract Introduction Carina breakthrough (CB) at the right pulmonary vein (RPV) can occur after circumferential pulmonary vein isolation (PVI) due to epicardial bridging or transient tissue edema. High-power short-duration (HPSD) ablation may increase the incidence of RPV CB.
Methods In this study, blood samples were collected from 16 patients before and 24h after pulmonary vein isolation (PVI) via a novel investigational PFA-based technology.
Pulsed-field ablation (PFA) is becoming increasingly relevant in the field of electrophysiology. Besides single-shot PFA devices for pulmonary vein isolation (PVI), point-by-point PFA is also gaining importance due to many possible applications. Data on the use is sparse, especially for atrial tachycardia (AT).
ABSTRACT Introduction Pulmonary vein (PV) restenosis develops with reported incidence rates of up to 50%. Balloon angioplasty seems to be the widely preferred treatment of choice. Method and Results A 54-year-old man with long history of atrial fibrillations developed PVS secondary to multiple radiofrequency ablation procedures.
Abstract Introduction Through systematic scientific rigor, the CLOSE guided workflow was developed and has been shown to improve pulmonary vein isolation durability. However, this technique was developed at a time when using power-controlled ablation catheters with conventional power ranges was the norm.
Abstract Introduction The novel cryoballoon with 28mm or 31mm adjustable diameters, aims to achieve a wide antral pulmonary vein isolation (PVI). We assessed the shapes of the LA and pulmonary veins (PVs) and the distribution of isolated areas (IAs), comparing the results between PAF and non-PAF patients.
Patients in the study will be randomized to undergo pulmonary vein isolation (PVI) and left atrial posterior wall ablation using the FARAPULSE PFA System, or receive AAD treatment, and followed for three years. The randomized AVANT GUARD trial will enroll more than 500 patients diagnosed with persistent AF at up to 75 sites globally.
Circulation: Arrhythmia and Electrophysiology, Ahead of Print. BACKGROUND:Pulmonary vein isolation (PVI) alone is less effective in patients with persistent atrial fibrillation (AF) compared with those with paroxysmal AF.
Backgroundwide antral pulmonary vein isolation (PVI) is effective for treating paroxysmal atrial fibrillation (PAF), although time-demanding. Procedural data and electrophysiology (EP) laboratory times were systematically collected and analyzed.
Abstract Introduction Atrial tachyarrhythmia recurrence during the blanking period (early ATA) after pulmonary vein isolation (PVI) is associated with an increased risk of later recurrence, but its relationship with pulmonary vein reconduction (PVR) is poorly understood.
Abstract Introduction Although first-pass isolation (FPI) of the pulmonary vein (PV) has been suggested as a marker for PV isolation (PVI) durability, it has not been confirmed. Non-PV atrial fibrillation (AF) triggers were the main target in patients without PV reconnection in the second ablation procedure, but the outcome was unclear.
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.
We aimed to determine the association between LAWT and AF recurrence after pulmonary vein isolation (PVI), as well as to evaluate the relationship between LAWT and LA fibrosis. Although LA wall thickness (LAWT) has emerged as an indicator of structural remodeling, its impact on AF outcomes remains unclear.
This novel cryoballoon with adjustable size and low compliance successfully achieves pulmonary vein isolation to treat paroxysmal atrial fibrillation (PAF), providing more options for patients with PAF. This cryoballoon system was proven to be safe and effective for treatment of patients with drug refractory or drug intolerant PAF.
PFA systems use electroporation (short electrical pulses) to achieve pulmonary vein isolation. The AFib pulsed field ablation treatment era officially began in the US last week, following the FDA approval of Medtronic’s PulseSelect Pulsed Field Ablation System for the treatment of both paroxysmal and persistent atrial fibrillation.
Abstract Introduction Pulsed field ablation (PFA) has emerged as an innovative technique for pulmonary vein isolation (PVI). Typically, a transeptal puncture (TSP) with a standard sheath precedes a switch to the larger diameter sheath in the left atrium.
Circulation: Arrhythmia and Electrophysiology, Ahead of Print. A contact force–sensing catheter was used to focally deliver PFA/radiofrequency at the pulmonary veins and other predefined sites in the atria. Transmurality was achieved in 95% of targeted sites and 100% at pulmonary veins.
Abstract Objective To evaluate the progression of electrophysiological phenomena in atrial fibrillation (AF) and elucidate the association between the left atrial conduction velocity (LACV) and AF recurrence after pulmonary vein isolation.
Abstract Background The newly introduced nonthermal pulsed field ablation (PFA) is a promising technology to achieve fast pulmonary vein isolation (PVI) with high acute success rates and good safety features. PFA versus VHPSD for PVI.
We used the algorithm to study the effect of pulmonary vein isolation (PVI) on the frequency of focal, planar, and colliding wavefronts in persistent AF. Abstract RETRO-mapping was developed to automate activation mapping of atrial fibrillation (AF).
Methods and Results A 51-year-old female with paroxysmal atrial fibrillation comorbid bronchial asthma underwent pulmonary vein isolation with PFA using PulseSelect system. During application at the right superior pulmonary vein antrum, repeated oxygen desaturation with upper airway obstruction was observed.
We aim to determine the clinical and procedural predictors of pulmonary vein FPI. Abstract Introduction During atrial fibrillation ablation (AFA), achievement of first pass isolation (FPI) reflects effective lesion formation and predicts long-term freedom from arrhythmia recurrence.
Abstract Introduction Pulmonary vein isolations (PVI) are being performed using a high-power, short-duration (HPSD) strategy. Procedural were substantially reduced with HPSD ablation with no significant difference in overall complication rates.
Abstract Introduction Pulmonary vein isolation (PVI) is a pivotal part of ablative therapy for atrial fibrillation (AF). After 12 months of follow-up, there was an 81% freedom of AF in general, which was significantly higher in patients treated with robotic magnetic navigation-guided radiofrequency ablation (RMN-RF).
We present the long-term outcome of catheter ablation (CA) and electrophysiological characteristics in HIV+ AF patients. During first procedure, all received isolation of pulmonary vein (PV) + posterior wall and superior vena cava.
Methods This study enrolled 233 PeAF patients undergoing pulmonary vein isolation and linear ablation including an MI, roof line, and cavotricuspid isthmus ablation. However, the effect of an initial RF ablation with an adjunctive EIVOM has not been fully investigated.
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