Tetsuro Sakai

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AIMS There seems to be two distinct patterns in the presentation of acute heart failure (AHF) patients; early- vs. gradual-onset. However, whether time-dependent relationship exists in outcomes of patients with AHF remains unclear. METHODS The Tokyo Cardiac Care Unit Network Database prospectively collects information of emergency admissions via EMS(More)
Throughout our investigations on the ontogenesis of the electrophysiological events in early embryonic chick hearts, using optical techniques to record membrane potential probed with voltage-sensitive dyes, we have introduced a novel concept of “functiogenesis” corresponding to “morphogenesis”. This article gives an account of the framework of(More)
Forest fire is a common disturbance factor, especially in boreal forests. The detection of forest disturbance and monitoring of post-fire forest recovery are crucial to both ecological research and forest management. The Greater Hinggan Mountain area of China is rich in forest resources, but also has a high incidence of forest fires. After the most serious(More)
Multiple-site optical recording of membrane potential activity using a voltage-sensitive dye was employed to monitor action potentials in the rat atrium. Electrical pacing at 1 Hz evoked the events of tachycardia-like excitation (TE). Optical mapping revealed that a coupling of spontaneous and evoked action potentials resulted in the initiation of TE.