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BACKGROUND Recognition of the creation of transmural lesions (TLs) during atrial ablation procedures is important. OBJECTIVE The purpose of this study was to characterize local unipolar electrograms (UEs) and bipolar electrograms (BEs) recorded from a TL at different catheter orientations. METHODS In 13 porcines, 125 point-by-point ablations were(More)
  • K Otomo
  • 2001
Verbal/vocal interactions of three Japanese mother-child dyads were examined when the children were 1;0, 1;2 to 1;3, 1;6 to 1;7, and 1;8 to 1;9 to determine whether mothers provide information which may facilitate the elaboration of child lexical forms during the transition from the prelinguistic to the linguistic period. Mothers were likely to reproduce(More)
A two-tone oddball procedure was employed to examine the effect of a phonemic category on the mismatch negativity (MMN). One of the stimuli was a phoneme prototype of Japanese /e/, and the other, [e/ö], which was perceived by Japanese participants as showing deviance from typicality but is nonetheless included in the category /e/. As control stimuli, a pair(More)
INTRODUCTION Recent anatomical and electrophysiological studies have demonstrated the presence of leftward posterior nodal extension (LPNE); however, its role in the genesis of atrioventricular nodal reentrant tachycardia (AVNRT) is poorly understood. This study was performed to characterize successful slow pathway (SP) ablation site and to elucidate the(More)
BACKGROUND The precise electrophysiological characteristics and essential effects of left-sided ablation in atrioventricular nodal reentrant tachycardia (AVNRT) with eccentric coronary sinus (CS) activation (ECSA) have not been described. OBJECTIVE The purpose of this study was to elucidate the tachycardia characteristics and essential effects of(More)
BACKGROUND The electrophysiologic mechanisms of different ventriculoatrial (VA) block patterns during atrioventricular nodal reentrant tachycardia (AVNRT) are poorly understood. OBJECTIVES The purpose of this study was to characterize AVNRTs with different VA block patterns and to assess the effects of slow pathway ablation. METHODS Electrophysiologic(More)
Few studies have explored the topographic anatomy of the esophagus, posterior wall of the left atrium (LA), or fat pads using multidetector computed tomography (MDCT) to prevent the risk of esophageal injury during atrial fibrillation (AF) ablation. MDCT was performed in 110 consecutive patients with paroxysmal or persistent AF before the ablation procedure(More)
BACKGROUND High-intensity focused ultrasound (HIFU) can achieve pulmonary vein isolation (PVI), but there are safety concerns after severe complications. Therefore, we evaluated an esophageal temperature (ET)-guided safety algorithm to apply HIFU safely. METHODS AND RESULTS After standard left atrial access, HIFU was repeatedly applied until PVI was(More)
INTRODUCTION A reentrant circuit within an area of abnormal myocardium is suspected as the origin of ventricular tachycardia (VT) in patients with arrhythmogenic right ventricular dysplasia (ARVD). OBJECTIVES To examine the relationship between the reentrant circuits of VT and the abnormal electrograms in ARVD, and to assess the feasibility of a block(More)
BACKGROUND Atrioventricular (AV) nodal reentrant tachycardias (AVNRT) with variable AV relationships are infrequently observed and might be misdiagnosed as atrial tachycardia. OBJECTIVE This single-center, retrospective study was performed to elucidate the mechanism of AVNRT showing variable AV relationship. METHODS This study included a total of 340(More)