著者
Hiroshi Matsuo Kaoru Dohi Hirofumi Machida Hideyuki Takeuchi Toshikazu Aoki Hiroyuki Nishimura Masashi Yasutomi Michiharu Senga Takehiko Ichikawa Kentaro Kakuta Yasuhide Mizutani Akiko Tanoue Naoki Isaka Kazuki Oosugi Sukenari Koyabu Masato Sakurai Yoshihisa Fukui Hitoshi Kakimoto Tadafumi Sugimoto Takahiro Ohnishi Tomohiro Murata Eiji Ishikawa Ryuji Okamoto Tomomi Yamada Toru Ogura Yuki Nishimura Takashi Tanigawa Shinsuke Nomura Masakatsu Nishikawa Masaaki Ito
出版者
The Japanese Circulation Society
雑誌
Circulation Journal (ISSN:13469843)
巻号頁・発行日
vol.82, no.2, pp.586-595, 2018-01-25 (Released:2018-01-25)
参考文献数
37
被引用文献数
29

Background:The aim of this study was to assess the echocardiographic characteristics of chronic hemodialysis (HD) patients with end-stage renal disease (ESRD) in a multicenter prospective cohort study.Methods and Results:Three hundred and fifteen patients with ESRD (67.9±10.6 years, 47.6% male) on chronic HD for ≥1 year were examined on transthoracic echocardiography, including Doppler-derived aortic valve area (AVA) measurement. Only 11.5% and 3.4% of all patients had normal left ventricular (LV) geometry and normal LV filling pattern, respectively. The majority of patients had aortic and mitral valvular calcification, and approximately 50% of all 315 patients had aortic valve narrowing with AVA <2.0 cm2. Patients were divided into 3 groups according to AVA index tertile: group 1, highest tertile; group 2, middle tertile; and group 3, lowest tertile. Group 3 was older, had a greater cardiothoracic ratio on chest X-ray, higher plasma brain natriuretic peptide and total LV afterload, and lower stroke volume index than the other 2 groups. Age and intact parathyroid hormone (PTH) level were independently associated with low AVA index.Conclusions:Patients with ESRD on chronic HD have a high prevalence of cardiac structural and functional abnormalities including calcified aortic sclerosis. High age and PTH were associated with aortic valve narrowing in these patients.
著者
Hiroshi Matsuo Takashi Ogihara Hitoshi Aikiyo Shigenobu Yamanaka
出版者
Asian Electric Vehicle Society
雑誌
Journal of Asian Electric Vehicles (ISSN:13483927)
巻号頁・発行日
vol.7, no.2, pp.1333-1336, 2009 (Released:2010-01-29)
参考文献数
4
被引用文献数
1 1

The running test of railcar was examined using large lithium ion battery in the local line in Japan. 90 kWh of Mn type lithium ion battery was used. The relation between running time and voltage, current and integrating watt was investigated in detail. The railcar was run when the lithium ion battery module was discharged between 660 V and 480 V. The use of lithium ion battery had little voltage changes and enabled the smooth running compared with contact-wire type railcar. On one charge, it was also found from the running test that the railcar could run for about 40 km and the mileage improved 9 %. The running performance of lithium ion battery type railcar was equivalent to the contact-wire type railcar. It was found that the railcar powered by lithium ion battery was effective for the replace of diesel type railcar in the local line.