H. Kakugawa

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INTRODUCTION The aim of this study was to investigate the usefulness of the autocorrelation function (reversed fast Fourier transform analysis) in determining the atrial fibrillation cycle length (AFCL) during human atrial fibrillation (AF). METHODS AND RESULTS From 30 episodes of atrial electrograms recorded for 30 seconds from the high right atrium(More)
The aims of this study were to evaluate the changes in the electrophysiological characteristics of the right atrium after the administration of flecainide and to clarify whether flecainide has a selective effect on human atrial tissue. Electrophysiological measurements were made in 38 patients, before and after intravenous administration of flecainide (2(More)
SUMMARY Multilingual information processing technology has enabled us to handle the text of many languages and scripts. Technical difficulties, however, still remain in the field of displaying and printing text. Windowing systems and printers often lack support for scripts that are not widely used and there has been no simple and flexible remedy for this(More)
The purpose of this study was to identify the difference between the pure Na channel blocker, pilsicainide and Ic-antiarrhythmic drug, flecainide, on the atrial electrophysiological characteristics. Methods: The subjects consisted of 24 patients (48 ± 12 years-old: P-group) in whom pilsicainide was administrated intravenously (1 mg/kg/10 min) and 31(More)
Atrial electrograms were recorded from the high right atrium, coronary sinus, and right lateral wall in 15 patients with induced atrial fibrillation (AF). Intravenous cibenzoline terminated AF in 8 patients (T group), but not in 7 patients (non-T group). The cycle length of the AF (AFCL) obtained by the autocorrelation function was measured every 5 s during(More)
Life threatening arrhythmias may cause sudden cardiac death and are divided into bradyarrhythmias and tachyarrhythmias. Most of lethal arrhythmias result from structural (fibrosis and scar due to ischemia) and functional(heart failure and autonomic nerve) abnormalities of the myocardium. But primary electrical diseases, which are caused by the abnormalities(More)
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