著者

田中 忠良 山田 幸生 石黒 博 竹内 正顕 山下 衛 小竹 進

出版者

一般社団法人日本機械学会

雑誌

日本機械学会論文集 B編 (ISSN:03875016)

巻号頁・発行日

vol.55, no.515, pp.p2018-2023, 1989-07

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The body temperatures of anesthetized patients under going operations decrease gradually because control of the body temperature is suppressed and the temperature of the operating room is kept lower than the body temperature. In order to prevent a patient's body temperature from lowering during an operation, a mat with hot-water circulation is often used. However, it has been reported that burn injuries occasionally occur in such cases, even when no defect in temperature setting and control of the mat is found. The mechanism causing this burn injury has not been determined. This report analyzes the heat transfer of a body-mat system simulated by a simplified model to examine the possibility and mechanism of such burn injuries. The analysis discusses the effects of hot-water flow rates, hot-water temperature and metabolic heat generation on body temperature. It is found that burn injury can occur, particularly in the high metabolic state, when heat transfer by the blood flow is negligible and the rate of water flowing into the mat is reduced considerably.

著者

中村 優一 角田 直人 山田 幸生

出版者

一般社団法人 日本機械学会

雑誌

年次大会講演論文集

巻号頁・発行日

vol.2003, pp.65-66, 2003

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Water as well as wastes is removed from the blood of patients under dialysis treatment. If the quantity of the removed water exceeds the limit by some reasons the probability of dangerous accidents becomes high. Therefore, it is highly desired to monitor the blood status continuously during dialysis treatment. This paper presents some results of a fundamental research of measurement of water content in blood using near infrared spectroscopy and multivariate analysis for the purpose of continuous blood monitoring.

著者

伊熊 健一郎 子安 保喜 山田 幸生 林 輝美 脇本 栄子

出版者

日本産科婦人科内視鏡学会

雑誌

日本産科婦人科内視鏡学会雑誌 (ISSN:18845746)

巻号頁・発行日

vol.12, no.1, pp.87-91, 1996 (Released:2010-09-09)

参考文献数

10

著者

伊熊 健一郎 安藤 正明 植田 敏弘 山田 幸生 堀内 功 森 龍雄 子安 保喜

出版者

社団法人日本産科婦人科学会

雑誌

日本産科婦人科學會雜誌 (ISSN:03009165)

巻号頁・発行日

vol.52, no.2, pp."478(S-402)", 2000-02-01

著者

山田 幸生

出版者

公益社団法人 日本金属学会

雑誌

まてりあ (ISSN:13402625)

巻号頁・発行日

vol.38, no.3, pp.189-193, 1999-03-20 (Released:2011-08-11)

参考文献数

17

著者

北野 正典 中村 優一 PILT Kristjan 有本 英伸 角田 直人 山田 幸生

出版者

一般社団法人 日本機械学会

雑誌

年次大会講演論文集

巻号頁・発行日

vol.2005, pp.61-62, 2005

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Patients of kidney disease remove excess water by hemodialysis. In hemodialysis, blood pressure may fall and the patients may suffer from hypovolemic shock, because body fluid removal rate is normally larger than plasma refilling rate. The aim of our research is to measure water content in issue in order to prevent the hypovolemic shock and to know how much water has to be removed quantitatively. We employ a technique using near infrared spectroscopy for this purpose. It will have advantages of being real-time, noninvasive and continuous.

著者

山田 幸生

出版者

一般社団法人 日本生体医工学会

雑誌

BME (ISSN:09137556)

巻号頁・発行日

vol.17, no.4, pp.35-43, 2003-07-10 (Released:2011-09-21)

参考文献数

13