Publications by authors named "Julian Kyoung-Ryul Chun"
Article Synopsis
- In patients with non-valvular atrial fibrillation at high stroke risk who can't take long-term anticoagulants, left atrial appendage closure (LAAC) serves as an alternative treatment.
- A case study of a 74-year-old female highlighted the successful use of pulsed field ablation (PFA) for pulmonary vein isolation (PVI) along with LAAC using the WATCHMAN FLX™ device.
- Follow-up showed no stroke or bleeding incidents over 6 months, with an initial swelling around the LAAC device resolving and a stable, albeit slightly tilted, device position without leakage.
Catheter ablation of atrial fibrillation using non-thermal electroporation represents a promising ablation modality due to its believed superior safety profile. Still, if electroporation is delivered in proximity to a coronary artery, vasospasms can occur. We report the first case of severe right coronary artery vasospasm resulting in ST-segment elevation and AV block despite a remote distance from the ablation site to the right coronary artery, indicating a different mechanism.
View Article and Find Full Text PDFBackground: Left atrial appendage (LAA) isolation (LAAI) has been described as an adjunctive ablation strategy for patients with recurrent atrial tachyarrhythmia (ATa).
Objectives: We compared the clinical impact of persistent durable LAAI between radiofrequency (RF)-guided wide-area LAAI and cryoballoon (CB)-guided ostial LAAI.
Methods: Consecutive patients who underwent RF- or CB-guided LAAI were retrospectively analyzed.
Background: The iCLAS ultra-low temperature cryoablation (ULTC) system has recently been brought to the market. A combination of a newly exploited cryogen and interchangeable stylet enables flexible and continuous lesion creation in atrial fibrillation (AF) ablation. The use of an esophageal warming balloon is recommended when using the system to reduce the potential for collateral esophageal injury.
View Article and Find Full Text PDFTo conduct a systematic review and meta-analysis to compare the effectiveness and safety of cryoballoon ablation of atrial fibrillation (AF) performed using a single freeze strategy in comparison to an empiric double ('bonus') freeze strategy. We systematically searched MEDLINE, EMBASE, and CENTRAL databases from inception to 12 July 2020, for prospective and retrospective studies of patients undergoing cryoballoon for paroxysmal or persistent AF comparing a single vs. bonus freeze strategy.
View Article and Find Full Text PDFCatheter ablation of atrial fibrillation (AF) has been established worldwide and is recommended for symptomatic paroxysmal AF patients according to international guidelines. Importantly, the cornerstone of any AF ablation represents pulmonary vein isolation (PVI). Traditional radiofrequency (RF) point by point ablation within a 3D electroanatomic left atrial (LA) map requires profound understanding of LA anatomy and electrophysiology.
View Article and Find Full Text PDFArticle Synopsis
- The study looked at how well cryoballoon ablation (CBA) works compared to radiofrequency ablation (RFA) for people with a type of heart problem called atrial fibrillation.
- They found that CBA had a lower chance of patients' heart problems coming back, especially for those with paroxysmal AF.
- CBA also caused fewer issues that needed patients to go back to the hospital, even though it had more radiation exposure than RFA.
Aims: This study evaluates feasibility, safety, and efficacy of magnetic remote-controlled accessory pathway (AP) ablation.
Methods And Results: The novel magnetic navigation system (MNS) (Niobe, Stereotaxis) creates a steerable magnetic field (0.08 T) controlling the distal magnetic tip of an ablation catheter.
Objective: An 18-year old male patient with recurrent supraventricular tachycardias was admitted for catheter ablation. Baseline ECG was consistent with right anterolateral accessory pathway (AP) conduction.
Materials And Methods: The novel magnetic navigation system (MNS, Niobe Stereotaxis) in combination with a catheter advancer unit (Cardiodrive, Stereotaxis) allows a complete remote-controlled electrophysiologic study and ablation.