Daisuke Wakatsuki

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OBJECTIVES This study was conducted to examine the relationship between provoked coronary spasm and clinical course in patients with acute myocardial infarction (AMI). BACKGROUND Coronary spasm has a pathogenetic role in the occurrence of AMI and progressive atherosclerosis. There is no report that focused on the prognostic significance of provoked(More)
We have used Heidenhain-pouch dogs to investigate the effects of (+/-)-5-methoxy-2-{[(4-methoxy-3,5-dimethylpyrid-2-yl)methyl]sulph inyl}-1H-imidazo[4,5-b]pyridine (TU-199), an imidazopyridine derivative, on gastric acid secretion stimulated by histamine, carbachol and tetragastrin. We have also investigated the duration of the antisecretory effect of(More)
Preterm labor (PTL) is one of the main causes of fetal mortality and morbidity in obstetrical medicine. Current methods of treatment are not very effective and often have significant side effects. For this reason new methods of preventing PTL are currently being sought. In Western medicine the newest development is oxytocin antagonists. In Oriental medicine(More)
Introduction: Intra-cardiac echocardiography (ICE) which has some benefits, can be used to obtain detailed anatomy of the heart chambers or large vessels, and the catheter positions, and it has been considered useful for improving the outcome of the ablation. In the present study, we performed pulmonary vein isolation (PVI) under real time monitoring of ICE(More)
OBJECTIVE Significant Q-wave is sometimes invisible in the patients with triple vessel disease (TVD) even though TVD is a serious coronary heart disease. We offer the preliminary method to analyze the time-frequency profile of QRS in TVD patients. METHODS Electrocardiograms (ECG) band-pass filtered through 50 to 300Hz were recorded from the persons(More)
It is well known that the high frequency components during QRS complex may relate with the scattered myocardial damages such as the focal necrosis. However, the time-frequency power spectrum limited in QRS can be hardly measured by use of the conventional fast Fourier transform (FFT) based algorithm. In contrast to the FFT, the wavelet transform (WT) has(More)