Yukihiko Yoshida

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Unexplained cardiac arrest (UCA) with documented ventricular fibrillation (VF) is a major cause of sudden cardiac death. Abnormal sympathetic innervations have been shown to be a trigger of ventricular fibrillation. Further, adequate expression of SEMA3A was reported to be critical for normal patterning of cardiac sympathetic innervation. We investigated(More)
AIMS Managed ventricular pacing (MVP) and Search AV+ are representative dual-chamber pacing algorithms for minimizing ventricular pacing (VP). This randomized, crossover study aimed to examine the difference in ability to reduce percentage of VP (%VP) between these two algorithms. METHODS AND RESULTS Symptomatic bradyarrhythmia patients implanted with a(More)
AIMS The aim of this study was to investigate the change in plasma brain natriuretic peptide (BNP) level after pulmonary vein isolation (PVI) in paroxysmal (PAF), persistent (Pers-AF), and permanent atrial fibrillation (AF) (Perm-AF) patients. METHODS AND RESULTS In 96 lone AF patients (PAF=65, Pers-AF=17, and Perm-AF=14), BNP was measured before and 3(More)
AIMS This study examined the difference in autonomic modification (AM) and its effect on paroxysmal atrial fibrillation (PAF) recurrence between segmental pulmonary vein isolation (S-PVI) and circumferential PVI (C-PVI). METHODS AND RESULTS Successful S-PVI or C-PVI with a basket catheter was achieved in 120 consecutive PAF patients. Serial 24(More)
AIMS The aim of this study was to reveal the incidence, location, and cause of recovery of the electrical connections (ECs) between the left atrium and the pulmonary veins (PVs) after the segmental ostial PV isolation (PVI). METHODS AND RESULTS Pulmonary vein mapping and successful PVI were performed using a computerized three-dimensional mapping system(More)
In order to investigate why crystal symmetry lowers with increasing temperature by phase transition of T II–III (=369 K) in Cs 3 H(SeO 4) 2 , in spite of the fact that crystal symmetry in the high-temperature phase of many ionic conductors becomes higher by the phase transition, we have studied the relation between the change in crystal symmetry and the(More)
We propose a novel active islanding prevention method for large penetration of photovoltaic (PV) systems by detecting the harmonic impedance change, and have developed the simulation models for PV inverters which have new active methods by using PSCAD/EMTDC. We also study the performance of islanding detection functions in non detection zone (NDZ) by(More)
BACKGROUND To clarify the influence of hypertension and blood pressure (BP) control on thromboembolism and major hemorrhage in patients with nonvalvular atrial fibrillation, a post hoc analysis of the J-RHYTHM Registry was performed. METHODS AND RESULTS A consecutive series of outpatients with atrial fibrillation was enrolled from 158 institutions. Of(More)
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