Publications by authors named "Atsuhito Oda"
Article Synopsis
- This study examines factors influencing the failure of left superior pulmonary vein (LSPV) isolation during cryoballoon (CB) procedure, even when complete occlusion is achieved.
- Researchers analyzed 300 patients undergoing ablation, identifying two groups based on their LSPV isolation results: those needing additional freezing (Group A) and those only needing complete occlusion (Group B).
- Key findings show that Group A had larger LSPV diameters, higher left atrial volumes, and different freezing conditions, suggesting the importance of balloon positioning for effective isolation in challenging cases.
Article Synopsis
- This study investigates the effectiveness of cryoballoon ablation (CBA) of the left atrial roof using the POLARx catheter compared to the AFA-Pro in patients with persistent atrial fibrillation.
- The results show that POLARx achieved a complete conduction block more effectively and maintained a significantly lower cryoballoon temperature during the procedure compared to AFA-Pro.
- As a result, POLARx eliminates the need for rapid right ventricular pacing, making the procedure simpler and more efficient for achieving the desired outcomes.
Background: The anatomical approach for the management of para-Hisian ventricular arrhythmias (VAs) with QRS morphological changes after catheter ablation (CA) has not been well investigated.
Objective: We aimed to evaluate the electrocardiographic and electrophysiological findings and ablation outcomes of para-Hisian VAs with QRS morphological changes after CA.
Methods: Of the 30 patients who underwent CA for para-Hisian VAs at 4 institutions, 10 (33%) had QRS morphological changes after ablation.
Article Synopsis
- DAVNNT is a rare type of arrhythmia that is hard to diagnose, and this study is the first to connect it with a leftward inferior extension (LIE).
- Diagnosis was achieved by injecting adenosine triphosphate (ATP) during atrial pacing in a patient suspected of having DAVNNT.
- While initially unsuccessful, ablating the LIE ultimately cured the DAVNNT, highlighting the value of ATP injection in diagnosis and expanding our understanding of this condition.
Introduction: Cryoballoon ablation (CBA) of the left atrial (LA) roof in addition to a pulmonary vein isolation has been expected to improve the clinical outcomes post-atrial fibrillation (AF) ablation. We demonstrated the characteristics and efficacy of CBA of the LA roof through our experience with a large volume of procedures.
Methods: Among 1036 AF ablation procedures with CBA of the LA roof, 834 patients who underwent a de novo ablation were analyzed.
Introduction: Persistent left superior vena cava (PLSVC) is accompanied by enlarged coronary sinus (CS) and deformation of the triangle of Koch. This makes anatomical evaluation of the atrioventricular (AV) nodal pathways difficult.
Methods: We attempted cryoablation of retrograde fast pathway located in the enlarged CS roof of PLSVC for slow-fast AV nodal reentrant tachycardia (AVNRT) induced by inadvertent antegrade fast pathway elimination during ablation of left atrial tachycardia.
Cryoballoon ablation is an effective method for pulmonary vein isolation for atrial fibrillation; however, unexpected complications may occur while performing the ablation procedure. We report an extremely rare case of pulmonary vein perforation with hemoptysis that required emergency lobectomy caused by injury from a circular mapping catheter. ().
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- - A suture-mediated vascular closure device helps stop bleeding in the femoral vein after catheter ablation procedures.
- - There are some unclear risks of venous complications related to this device, specifically femoral vein occlusion and stenosis.
- - In two reported cases, patients experienced these complications but successfully underwent surgical repair and regained proper venous flow.
Background: This study aimed to clarify the clinical outcomes of cryoballoon ablation of the left atrial (LA) posterior wall (LAPW), including the LA roof, in patients with non-paroxysmal atrial fibrillation (AF).
Methods: We analyzed the outcomes of 284 patients with non-paroxysmal AF, of whom 210 underwent the cryoballoon ablation of the LAPW, including the LA roof, in addition to pulmonary vein isolation with a cryoballoon.
Results: Complete conduction block at the LA roof was obtained in 95.
Prevalence of gastric hypomotility after additional cryoballoon ablation of the left atrial roof.
Pacing Clin Electrophysiol
January 2022
Introduction: Gastric hypomotility (GH) is a major complication of atrial fibrillation (AF) ablation. We aimed to clarify whether additional cryoballoon ablation (CBA) of the left atrial (LA) roof is associated with GH.
Methods And Results: This study included 54 patients with non-paroxysmal AF who underwent CBA for pulmonary vein isolation and of the LA roof line.
Background: Contrast computed tomography (CT) is a useful tool for the detection of intracardiac thrombi. We aimed to assess the accuracy of the late-phase prone-position contrast CT (late-pCT) for thrombus detection in patients with persistent or long-standing persistent atrial fibrillation (AF).
Methods: Early and late-phase pCT were performed in 300 patients with persistent or long-standing AF.
Second-generation cryoballoon (CB) ablation is effective in achieving pulmonary vein (PV) isolation (PVI) in atrial fibrillation (AF) patients. The "crosstalk" (CST) phenomenon has been reported to reduce unnecessary applications during CB ablation. Nevertheless, it is unclear under what conditions the CST phenomenon occurs.
View Article and Find Full Text PDFLaserballoon-based pulmonary vein isolation has proven to be safe and effective. However, the influence of the laser energy titration on the lesion formation has never been fully investigated. The aim of this study was to determine the relationship between the delivered laser energy and lesion size, as well as the incidence of steam pop.
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