Search results for: Satoshi Nagase

Items from 1 to 20 out of 73 results

article

Local dispersion of repolarization in the occurrence of ventricular fibrillation in Brugada syndrome: Possibility of phase 2 reentry?

Satoshi Nagase, Satoshi Oka, Tsukasa Kamakura, Takeshi Aiba, more

Pacing and Clinical Electrophysiology > 47 > 8 > 1049 - 1053

To date, there have been no reports of recording epicardial electrograms at the onset of spontaneous ventricular fibrillation (VF) in patients with Brugada syndrome (BrS). In the case of BrS, unipolar and bipolar electrogram recording on the right ventricular epicardium revealed that dispersion of repolarization with delayed potential was associated with spontaneous occurrence of VF. Phase 2 reentry...

article

Transvenous lead extraction versus surgical lead extraction or conservative treatment for cardiac implantable electronic device infections: Propensity score‐weighted analyses of a nationwide claim‐based database

Mitsuru Wada, Yuko Y. Inoue, Michikazu Nakai, Yoko Sumita, more

Pacing and Clinical Electrophysiology > 46 > 8 > 833 - 839

Introduction Infection is one of the most important complications associated with cardiac implantable electronic device (CIED) therapy. The number of reports comparing the outcomes of transvenous lead extraction (TLE), surgical lead extraction, and conservative treatment for CIED infections using a real‐world database is limited. This study investigated the association between the treatment strategies...

article

Structural characteristics of patients with superior vena cava foci initiating atrial fibrillation: Analysis with electrocardiogram‐triggered computed tomography

Satoshi Oka, Kenichiro Yamagata, Tatsuya Nishii, Reina Tonegawa‐Kuji, more

Journal of Cardiovascular Electrophysiology > 34 > 3 > 556 - 564

Introduction The superior vena cava (SVC) is the most common source of non‐pulmonary vein foci in atrial fibrillation (AF); therefore, predicting the existence of non‐pulmonary vein foci before the catheter ablation procedure helps construct a proper ablation strategy in preparation for SVC isolation. This study aimed to clarify the structural characteristics of patients with SVC foci initiating...

article

Unusual response to a ventricular extrastimulus during a narrow QRS tachycardia: What is the mechanism?

Chisato Ota, Satoshi Nagase, Yuko Inoue, Koji Miyamoto, more

Pacing and Clinical Electrophysiology > 45 > 9 > 1090 - 1091

article

Zero‐fluoroscopy ablation in patients with cardiac electronic implantable devices

Keiko Shimamoto, Kenichiro Yamagata, Akinori Wakamiya, Nobuhiko Ueda, more

Journal of Cardiovascular Electrophysiology > 33 > 3 > 423 - 429

Introduction Utilizing a three‐dimensional (3‐D) mapping system and intracardiac echocardiography (ICE) has allowed ablation procedures with less or without fluoroscopy; however, there is limited data for patients with cardiac electronic implantable device (CIED) leads regarding the suspected risk of lead injury. Therefore, we sought to explore technics to perform safe trans‐septal approach and catheter...

article

Narrow QRS complex tachycardia with a 2:1 atrioventricular block: What is the mechanism

Yuichiro Miyazaki, Takashi Noda, Koji Miyamoto, Satoshi Nagase, more

Pacing and Clinical Electrophysiology > 44 > 7 > 1224 - 1226

article

An anatomical approach to determine the location of the sinoatrial node during catheter ablation

Keiko Shimamoto, Kenichiro Yamagata, Kenzaburo Nakajima, Tsukasa Kamakura, more

Journal of Cardiovascular Electrophysiology > 32 > 5 > 1320 - 1327

Introduction The sinoatrial node (SAN) should be identified before superior vena cava (SVC) isolation to avoid SAN injury. However, its location cannot be identified without restoring sinus rhythm. This study evaluated the usefulness of the anatomically defined SAN by comparing it with the electrically confirmed SAN (e‐SAN) to predict the top‐most position of e‐SAN and thus establish a safe and more...

article

High‐risk atrioventricular block in Brugada syndrome patients with a history of syncope

Tsukasa Kamakura, Frederic Sacher, Katsuhiko Katayama, Nobuhiko Ueda, more

Journal of Cardiovascular Electrophysiology > 32 > 3 > 772 - 781

Background Determining the etiology of syncope is challenging in Brugada syndrome (BrS) patients. Implantable cardioverter defibrillator placement is recommended in BrS patients who are presumed to have arrhythmic syncope. However, arrhythmic syncope in BrS patients can occur in the setting of atrioventricular block (AVB), which should be managed by cardiac pacing. The clinical characteristics of...

article

Identification of malignant early repolarization pattern by late QRS activity in high‐resolution magnetocardiography

Naotsugu Iwakami, Takeshi Aiba, Shiro Kamakura, Hiroshi Takaki, more

Annals of Noninvasive Electrocardiology > 25 > 4 > n/a - n/a

Background The early repolarization pattern (ERP) in electrocardiography (ECG) has been considered as a risk for ventricular fibrillation (VF), but effective methods for identification of malignant ERP are still required. We investigated whether high spatiotemporal resolution 64‐channel magnetocardiography (MCG) would enable distinction between benign and malignant ERPs. Methods Among all 2,636...

article

A safe and simple approach to avoid fast junctional rhythm during ablation in patients with atrioventricular nodal reentrant tachycardia

Motomi Tachibana, Kimikazu Banba, Kensuke Matsumoto, Minako Ohara, more

Journal of Cardiovascular Electrophysiology > 30 > 9 > 1578 - 1585

Introduction Fast junctional rhythm (JR) during slow pathway modification for atrioventricular nodal reentrant tachycardia (AVNRT) is a predictor of serious atrioventricular block. This study investigated the boundary to avoid fast JR during ablation with three‐dimensional (3D) electroanatomical mapping in AVNRT patients. Methods and Results Participants were 129 consecutive patients with common...

article

Performance of an atrial fibrillation detection algorithm using continuous pulse wave monitoring

Asami Kashiwa, Fumio Koyama, Koji Miyamoto, Tsukasa Kamakura, more

Annals of Noninvasive Electrocardiology > 24 > 2 > n/a - n/a

Background Detecting asymptomatic and undiagnosed atrial fibrillation (AF) is increasingly important. Recently, we developed a wristwatch‐based pulse wave monitor (PWM; Seiko Epson, Japan) capable of long‐term recording, with an automatic diagnosis algorithm that uses frequency‐based pulse wave analysis. The aim of this study was to evaluate the validity of continuous pulse wave monitoring for detection...

article

Pathogenic mechanisms of invasive group A Streptococcus infections by influenza virus–group A Streptococcus superinfection

Shigefumi Okamoto, Satoshi Nagase

Microbiology and Immunology > 62 > 3 > 141 - 149

Group A Streptococcus (GAS) are pathogenic bacteria of the genus Streptococcus and cause severe invasive infections that comprise a wide range of diverse diseases, including acute respiratory distress syndrome, renal failure, toxic shock‐like syndrome, sepsis, cellulitis and necrotizing fasciitis. The essential virulence, infected host and external environmental factors required for invasive GAS...

article

Change in QRS morphology as a marker of spontaneous elimination in verapamil‐sensitive idiopathic left ventricular tachycardia

Hiroshi Kawakami, Takeshi Aiba, Kohei Ishibashi, Ikutaro Nakajima, more

Journal of Cardiovascular Electrophysiology > 29 > 3 > 446 - 455

Background Verapamil‐sensitive idiopathic left ventricular tachycardia (verapamil‐ILVT) is thought to be due to a reentry within the LV fascicular system. Radiofrequency catheter ablation (RFCA) is effective for elimination of the VT; however, a long‐term prognosis of patients with verapamil‐ILVT is still unclear. Methods and results Eighty consecutive verapamil‐ILVT patients (62 men, 31 ± 12 years...

article

Impact of premature activation of the right ventricle with programmed stimulation in Brugada syndrome

Koji Nakagawa, Satoshi Nagase, Hiroshi Morita, Tadashi Wada, more

Journal of Cardiovascular Electrophysiology > 29 > 1 > 71 - 78

Background In Brugada syndrome (BrS), it has been reported that delayed activation in the RV is related to the development of type‐1 ECG, which is more critical than type‐2. On the other hand, the coexistence of complete right bundle‐branch block (CRBBB), which also causes delayed activation in the RV, sometimes makes typical BrS ECG misleading. We hypothesized that premature stimulation of the RV...

article

Landiolol suppression of electrical storm of torsades de pointes in patients with congenital long-QT syndrome type 2 and myocardial ischemia

Ryota Kitajima, Takeshi Aiba, Tsukasa Kamakura, Kohei Ishibashi, more

Journal of Arrhythmia > 2017 > 33 > 5 > 501-504

A 76-year-old man who had been diagnosed with long-QT syndrome type 2 had frequent syncopal attacks. The electrocardiogram was monitored, and frequent torsades de pointes (TdP) was detected despite administration of conventional medications: oral propranolol, verapamil, intravenous magnesium sulfate, verapamil, and lidocaine. In contrast, 2μg/kg/min landiolol could completely suppress TdP. Subsequently,...

article

Heart failure in patients with arrhythmogenic right ventricular cardiomyopathy: What are the risk factors?

Yoshitaka Kimura, Takashi Noda, Taka-aki Matsuyama, Yosuke Otsuka, more

International Journal of Cardiology > 2017 > 241 > C > 288-294

We previously demonstrated that heart failure (HF) was one of the major causes of death in arrhythmogenic right ventricular cardiomyopathy (ARVC). The purpose of this study was to elucidate the clinical impact and risk factors of HF in patients with ARVC.We evaluated cardiac adverse outcomes including HF in 113 consecutive patients with ARVC (85 men, mean age: 44±15years). During a median follow-up...

article

Impact of electrocardiogram screening during drug challenge test for the prediction of T-wave oversensing by a subcutaneous implantable cardioverter defibrillator in patients with Brugada syndrome

Tsukasa Kamakura, Mitsuru Wada, Kohei Ishibashi, Yuko Y. Inoue, more

Heart and Vessels > 2017 > 32 > 10 > 1277-1283

Screening tests conducted at rest may be inadequate for the prediction of the T-wave oversensing (TWOS) in subcutaneous implantable cardioverter defibrillator (S-ICD) candidates with Brugada syndrome (BrS) because of the dynamic nature of electrocardiogram (ECG) morphology. We evaluated the utility of ECG screening during drug challenge (DC) for prediction of TWOS in BrS patients implanted with an...

article

Differences in the onset mode of ventricular tachyarrhythmia between patients with J wave in anterior leads and those with J wave in inferolateral leads

Tsukasa Kamakura, Mitsuru Wada, Kohei Ishibashi, Yuko Y. Inoue, more

Heart Rhythm > 2017 > 14 > 4 > 553-561

The pathophysiological mechanism of J wave in anterior leads (A-leads) and inferolateral leads (L-leads) remains unclear.We investigated the onset mode and circadian distribution of ventricular tachyarrhythmia (VTA) episodes between patients with early repolarization syndrome (ERS) and Brugada syndrome (BrS).The study enrolled 35 patients with ERS and 52 patients with type 1 BrS with spontaneous ventricular...

article

“Window Sliding” analysis combined with high-density and rapid electroanatomical mapping: its efficacy and the outcome of catheter ablation of atrial tachycardia

Kosuke Nakasuka, Koji Miyamoto, Takashi Noda, Tsukasa Kamakura, more

Heart and Vessels > 2017 > 32 > 8 > 984-996

Atrial tachycardia (AT) is a clinically challenging arrhythmia that can occur based on atrial substrates. Nowadays, a rapid construction of three-dimensional electroanatomical maps, which has an analysis function for complex arrhythmias, named ‘Window Sliding’ (WS) is available. However, little data has revealed the efficacy of this mapping strategy. The aim of this study was to investigate the efficacy...

article

Toll-like receptor 9 ligand D-type oligodeoxynucleotide D35 as a broad inhibitor for influenza A virus replication that is associated with suppression of neuraminidase activity

Hiroshi Yamada, Satoshi Nagase, Kazuo Takahashi, Yoshihiro Sakoda, more

Antiviral Research > 2016 > 129 > C > 81-92

The most effective drugs available to treat influenza are neuraminidase (NA) inhibitors, which provide important additional measures for the control of influenza virus infections. However, since the emergence of NA inhibitor-resistant viruses may compromise the clinical utility of this class of anti-influenza agents, it is very important to develop new anti-influenza agents which target a different...

Publication date

Last year (1)
Last 3 years (5)

Close

Date range setting

Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.

From:

To:
Set your own date range

INFONA - science communication portal

Search results for: Satoshi Nagase

Local dispersion of repolarization in the occurrence of ventricular fibrillation in Brugada syndrome: Possibility of phase 2 reentry?

Transvenous lead extraction versus surgical lead extraction or conservative treatment for cardiac implantable electronic device infections: Propensity score‐weighted analyses of a nationwide claim‐based database

Structural characteristics of patients with superior vena cava foci initiating atrial fibrillation: Analysis with electrocardiogram‐triggered computed tomography

Unusual response to a ventricular extrastimulus during a narrow QRS tachycardia: What is the mechanism?

Zero‐fluoroscopy ablation in patients with cardiac electronic implantable devices

Narrow QRS complex tachycardia with a 2:1 atrioventricular block: What is the mechanism

An anatomical approach to determine the location of the sinoatrial node during catheter ablation

High‐risk atrioventricular block in Brugada syndrome patients with a history of syncope

Identification of malignant early repolarization pattern by late QRS activity in high‐resolution magnetocardiography

A safe and simple approach to avoid fast junctional rhythm during ablation in patients with atrioventricular nodal reentrant tachycardia

Performance of an atrial fibrillation detection algorithm using continuous pulse wave monitoring

Pathogenic mechanisms of invasive group A Streptococcus infections by influenza virus–group A Streptococcus superinfection

Change in QRS morphology as a marker of spontaneous elimination in verapamil‐sensitive idiopathic left ventricular tachycardia

Impact of premature activation of the right ventricle with programmed stimulation in Brugada syndrome

Landiolol suppression of electrical storm of torsades de pointes in patients with congenital long-QT syndrome type 2 and myocardial ischemia

Heart failure in patients with arrhythmogenic right ventricular cardiomyopathy: What are the risk factors?

Impact of electrocardiogram screening during drug challenge test for the prediction of T-wave oversensing by a subcutaneous implantable cardioverter defibrillator in patients with Brugada syndrome

Differences in the onset mode of ventricular tachyarrhythmia between patients with J wave in anterior leads and those with J wave in inferolateral leads

“Window Sliding” analysis combined with high-density and rapid electroanatomical mapping: its efficacy and the outcome of catheter ablation of atrial tachycardia

Toll-like receptor 9 ligand D-type oligodeoxynucleotide D35 as a broad inhibitor for influenza A virus replication that is associated with suppression of neuraminidase activity

Filter options

Publication date

Keywords

Data set

Journal

INFONA - science communication portal

Search results for: Satoshi Nagase

Add recipient

Sending message cancelled

Are you sure you want to cancel sending this message?

Send message

Filter options

Publication date

Date range setting

Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.

Keywords

Data set

Journal

Reporting an error / abuse

Sending the report failed

Accessibility options