A5038200022- Cardiac Arrhythmias and Treatments
- Atrial Fibrillation Management and Outcomes
- Cardiac electrophysiology and arrhythmias
- Cardiac pacing and defibrillation studies
- Cardiovascular Function and Risk Factors
- Cardiac Imaging and Diagnostics
- Congenital Heart Disease Studies
- ECG Monitoring and Analysis
- Cardiomyopathy and Myosin Studies
- Cardiac Valve Diseases and Treatments
- Cardiovascular Syncope and Autonomic Disorders
- Ovarian function and disorders
- Cardiac Structural Anomalies and Repair
- Ion channel regulation and function
- Venous Thromboembolism Diagnosis and Management
- Obstructive Sleep Apnea Research
- Pulmonary Hypertension Research and Treatments
- Drug-Induced Adverse Reactions
- Cardiac tumors and thrombi
- Vascular anomalies and interventions
- Public Administration and Political Analysis
- Reproductive Biology and Fertility
- Cardiovascular and Diving-Related Complications
- Heart Failure Treatment and Management
- Sarcoidosis and Beryllium Toxicity Research
University of Tsukuba
2015-2025
Tsuchiura Kyodo General Hospital
2017-2019
Yokohama Rosai Hospital
2016-2018
Tsukuba Medical Center Hospital
2016
Tsukuba Memorial Hospital
2016
St. Luke's International Hospital
2016
Kanazawa Hospital
2016
Ogaki Municipal Hospital
2016
University of Tsukuba Hospital
2014
Musashino Red Cross Hospital
2014
In patients with atrial fibrillation (AF), most thrombus forms in the left appendage (LAA). However, relation of LAA morphology is unknown.We prospectively enrolled 633 consecutive who were candidates for catheter ablation symptomatic drug-resistant AF. Transesophageal echocardiography (TEE) was performed to assess thrombus. structure assessed by 3-dimensional TEE. orifice area, depth, volume, and number lobes measured on reconstructed images. Clinical characteristics echocardiographic...
Fatal arrhythmia is commonly observed in cardiac sarcoidosis, but clinical effects of a systematic treatment approach are still uncertain. This study sought to describe both and electrophysiological characteristics outcomes ventricular tachycardia (VT) associated with sarcoidosis.
Successful bipolar radiofrequency catheter ablation (RFCA) of refractory ventricular arrhythmias (VAs) has been reported. However, the efficacy, safety, and long-term outcomes RFCA VAs are not fully determined.The purpose this study was to evaluate effectiveness safety in treating during follow-up.Eighteen patients who underwent for tachycardia (VT) at 7 institutions were retrospectively investigated. Underlying heart diseases included remote myocardial infarction (n = 3 [17%]) nonischemic...
An increased left atrial (LA) stiffness reflects the structural remodeling and deterioration of LA function. This study was designed to estimate by measuring a combination strain pressure in patients undergoing pulmonary vein isolation (PVI) fibrillation (AF) evaluate influence on cardiac function, serum markers, recurrence AF after PVI.In 155 consecutive with AF, brain natriuretic peptide (BNP) aminoterminal procollagen type III propeptide (PIIIP) plasma levels were measured before PVI. The...
The long-term effects of catheter ablation (CA) on the left atrium and atrial appendage (LAA) are unknown in persistent fibrillation (AF). This study investigated (LA) reverse remodeling evolution LA/LAA function after successful CA for AF identified predictors maintenance sinus rhythm (SR) LA remodeling.CA was performed 123 patients with AF. volumes, strain LAA wall velocity were assessed both at baseline 12 months ablation. Patients who maintained SR divided into 2 groups according to...
PPAR‐γ Activator as Upstream Therapy for Atrial Fibrillation in Rat. Introduction: The vivo role of peroxisome proliferator‐activated receptor (PPAR)‐γ, an essential transcriptional mediator lipid and glucose metabolism, atrial fibrillation (AF) remains to be fully elucidated. We investigated the effects pioglitazone, a activator, AF rat model. Methods Results: studied 3 groups Wistar rats: young group, 3‐month‐old rats treated with vehicle; aged 9‐month‐old aged+Pio pioglitazone. After...
AimsThe long-term prognosis of subjects with supraventricular premature complexes (SVPCs) remains unclear in the general population. The aim this study was to examine prognostic significance SVPCs community-based health checkups.
Excessive sympathetic nervous activity may contribute to atrial fibrillation (AF) recurrences after ablation, but its precise role remains controversial. The goals of this study were assess the effects AF on iodine-123-metaiodobenzylguanidine ((123) I-MIBG) findings and elucidate impact procedural outcome in patients undergoing a first-time catheter ablation treat AF.This included 88 consecutive with paroxysmal (n = 48) or persistent 40) who underwent radiofrequency (123) I-MIBG...
The most common form of idiopathic Purkinje-related ventricular tachycardia (VT) is the reentrant type. We describe clinical and electrophysiological characteristics focal non-reentrant fascicular tachycardia.Among 530 VT patients who were referred for ablation, we identified 15 (2.8%) with (11 men, 45±21 years). Sinus rhythm ECG showed normal conduction intervals a His-ventricular interval 41±4 ms. All had monomorphic (cycle length: 337±88 ms) relatively narrow QRS (123±12 ms), they did not...
KEY TEACHING POINTS•Interatrial connections, such as Bachmann's bundle; fossa ovalis; and the coronary sinus, have been identified critical interatrial conduits in reentrant circuits associated with biatrial tachycardia (BiAT). Although histologic studies frequently reveal presence of smaller muscular fibers within superior atrial septum, their electrophysiological function BiAT has rarely reported.•Using 3-dimensional mapping study proved indispensable diagnosing elucidating involved 2...
Abstract Background Dextro-transposition of the great arteries (d-TGA) typically results in death within first year life without surgery. Shunts can allow sufficient blood mixing and survival into adulthood; however, patients with unrepaired d-TGA beyond 60 years has not been reported. Case Summary A 60-year-old woman d-TGA, an unrestricted atrial septal defect, partial anomalous pulmonary venous return presented recurrent syncope due to tachycardia (AT) following two sessions radiofrequency...
ABSTRACT Introduction The role of corticosteroids in the management ventricular tachyarrhythmia (VA) cardiac sarcoidosis (CS) remains controversial. This study assessed effect early steroid initiation on VA recurrence rates patients with CS and evaluated frequency before after therapy. Methods From a registry 137 arrhythmias, those more than 60 days follow‐up were included. Patients categorized into three groups: previous‐on‐steroid, using at time first ( n = 15); early‐steroid, within 21);...