Results 51 to 60 of about 2,340,841 (232)

High-density mapping validation of antral pulmonary vein isolation and posterior wall isolation created with a new cryoballoon ablation system: The first reported case

, 2020
Cryoballoon ablation is a recognized and widespread method for pulmonary vein isolation. For many years the impossibility of using it to create additional lines was considered a drawback of this approach.
Moltrasio M., Tondo C., Tundo F., Riva S., Kochi A. N., Fassini G.   +5 more
core   +1 more source

Ablation index-guided 50W radiofrequency ablation for left atrial posterior wall isolation in atrial fibrillation

Indian Pacing and Electrophysiology Journal, 2022
Background: Ablation index (AI)-guided ablation for posterior wall isolation (PWI) using high-power, short-duration remains untested. We sought to evaluate the acute outcomes of AI-guided 50 W ablation vs.
Wern Yew Ding, Lilith Tovmassian, Cedric Bierme, Nikola Kozhuharov, Richard L. Snowdon, Dhiraj Gupta   +5 more
doaj   +1 more source

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

Advanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios, Anthony Gonzalez, Aleksander Aleman, Tyler Dolmetsch, Tanaji Paul, Arvind Agarwal   +5 more
wiley   +1 more source

Long-Term Stroke Risk in Patients Undergoing Left Atrial Appendage Ablation With and Without Complete Isolation

Frontiers in Cardiovascular Medicine, 2021
Background: Catheter ablation (CA) for atrial fibrillation (AF), may require ablation beyond the pulmonary veins. Prior data suggest that additional LA ablation, particularly left atrial appendage (LAA) ablation, may alter atrial function leading to ...
Aneesh Dhorepatil, Angela L. Lang, Min Lang, Muhammad Butt, Amit Arbune, David Hoffman, Soufian Almahmeed, Ohad Ziv   +7 more
doaj   +1 more source

Symmetry‐Guided Multifunctional Acoustic System Based on Mechanically Actuated Sonic Crystals

Advanced Engineering Materials, EarlyView.
This study presents the design, simulation, and experimental validation of amultifunctional acoustic metamaterial based on rotationally engineered sonic crystals.By tuning cylinder orientations, controllable band gaps and six distinct functionalities—including switching, topological insulation, beam splitting, and logic operations—areachieved ...
Yuanyan Zhao, Sriram Subramanian, Gianluca Memoli   +2 more
wiley   +1 more source

Enhanced Ultrasound Transmission Through Aberration Layers Using Space‐Coiling Acoustic Metamaterials

Advanced Engineering Materials, EarlyView.
Enhancing ultrasound transmission through an aberration layer exhibiting mismatched impedance with the surrounding medium possesses great implications in imaging and treatment. In this study, we show that a space‐coiling acoustic metamaterial with judiciously tailored structural profile can help improve impedance matching.
Maral Ghanami, Hengzhe Ren, Erqian Dong, Ashkan Ghanbarzadeh‐Dagheyan, Chen Shen   +4 more
wiley   +1 more source

Feasibility, safety, and efficacy of posterior wall isolation during atrial fibrillation ablation

, 2019
BACKGROUND:The posterior left atrium is an arrhythmogenic substrate that contributes to the initiation and maintenance of atrial fibrillation (AF); however, the feasibility, safety, and efficacy of posterior wall isolation (PWI) as an AF ablation ...
Emami, M., Mahajan, R., Kadhim, K., Lau, D.H., Mishima, R., Munawar, D.A., Sanders, P., Malik, V., Thiyagarajah, A., O'Shea, C., Khokhar, K., Linz, D.   +11 more
core   +1 more source

Pulsed-field ablation of pulmonary vein and left atrial posterior wall combined with left atrial appendage occlusion as single procedure [PDF]

, 2023
Pulmonary vein isolation and left atrial posterior wall ablation using the Farapulse system, followed by left atrial appendage occlusion, have been achieved as single combined procedure to treat long-standing persistent atrial fibrillation in a patient ...
Pizzamiglio, Francesca, Cellucci, Selene, Riva, Stefania, Carbucicchio, Corrado, Tondo, Claudio, Tundo, Fabrizio, Ribatti, Valentina, Fassini, Gaetano, Moltrasio, Massimo, Sicuso, Rita, Vettor, Giulia, Dessanai, Maria Antonietta, Bianchini, Lorenzo, Majocchi, Benedetta   +13 more
core   +1 more source

Catheter Ablation of Atrial Tachycardia Originating From the Posterior Wall of the Left Atrium Following Prior Atrial Fibrillation Ablation: A Case Report

Clinical Case Reports
This case report describes a 56‐year‐old male with recurrent symptomatic atrial tachycardia (AT) following prior extensive atrial fibrillation ablation, including posterior wall isolation.
Ying Gong, Ali Ma, Zhen Yang
doaj   +1 more source

Impact of Left Atrial Bipolar Electrogram Voltage on First Pass Pulmonary Vein Isolation During Radiofrequency Catheter Ablation

Frontiers in Physiology, 2020
BackgroundFirst pass pulmonary vein isolation (PVI) is associated with durable isolation and reduced recurrence of atrial fibrillation (AF).ObjectiveWe sought to investigate the relationship between left atrial electrogram voltage using multielectrode ...
Lohit Garg, Naga Venkata K. Pothineni, J. Michael Daw, Matthew C. Hyman, Jeffrey Arkles, Cory M. Tschabrunn, Pasquale Santangeli, Francis E. Marchlinski   +7 more
doaj   +1 more source