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Improvement of Cardiac Function by Dry Weight Optimization Based on Interdialysis Inferior Vena Caval Diameter (1)

中国血液净化 2002年第12期1卷 1-2页

作者： Shizue Hirayama Yasuhiro Ando Yuji Sudo yasushi asano Dpartment of Internal Medicine KisenHospital Tokyo JapanDivision of Nephrology Jichi Medical School Tochigi JapanDpartment of Internal Medicine KisenHospital Tokyo JapanDivision of Nephrology Jichi Medical School Tochigi Japan

In hemodialysis (HD) patients, the diameter of the inferior vena cava (IVC) serves for evaluation of the amount of body fluid.

关键词： In Improvement of Cardiac Function by Dry Weight Optimization Based on Interdialysis Inferior Vena Caval Diameter body IVC

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Improvement of Cardiac Function by Dry Weight Optimization Based on Interdialysis Inferior Vena Caval Diameter(3)

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中国血液净化 2003年第1期2卷 2-4,34页

作者： Shixue HIRAYAMA Yasuhiro ANDO Yuji SUDO yasushi asano Shizue Hirayama Yuji sudoDpartment of Internal MedicineKisenHospi talTokyoJapan Division of Nephrology Jichi Medical School TochigiJapan

The nonimprovement group was characterized by the following: ① a high incidence of diabetes (4 of 6 patients) ,② a high incidence of preexisting cardiac dysfunction documented prior to or at the time of induction.

关键词： Dry Weight

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Improvement of Cardiac Function by Dry Weight Optimization Based on Interdialysis Inferior Vena Caval Diameter(3)

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中国血液净化 2003年第1期 9-11+41页

作者： Shixue HIRAYAMA,Yasuhiro ANDO,Yuji SUDO,yasushi asano Shizue Hirayama Yuji sudo Dpartment of Internal Medicine KisenHospi tal Tokyo Japan. Yasuhiro Ando yasushi Asabi Division of Nephrology Jichi Medical School Tochigi Japan. Shizue Hirayama Yuji sudo Dpartment of Internal Medicine KisenHospi tal Tokyo Japan. Yasuhiro Ando yasushi Asabi Division of Nephrology Jichi Medical School Tochigi Japan. Shizue Hirayama Yuji sudo Dpartment of Internal Medicine KisenHospi tal Tokyo Japan. Yasuhiro Ando yasushi Asabi Division of Nephrology Jichi Medical School Tochigi Japan. Shizue Hirayama Yuji sudo Dpartment of Internal Medicine KisenHospi tal Tokyo Japan. Yasuhiro Ando yasushi Asabi Division of Nephrology Jichi Medical School Tochigi Japan.

关键词： of in or In Improvement of Cardiac Function by Dry Weight Optimization Based on Interdialysis Inferior Vena Caval Diameter DWI by on

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The Inferior Vena Cava Diameter as a Marker of Dry Weight in Chronic Hemodialyzed Patients(续)

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中国血液净化 2002年第9期1卷 1-4页

作者： Yasuhiro Ando Satoru Yanagiba yasushi asano Division of Nephrology Jichi Medical School Minamikawachi Kawachi Tochigi Japan 32904Division of Nephrology Jichi Medical School Minamikawachi Kawachi Tochigi Japan 32904Division of Nephrology Jichi Medical School Minamikawachi Kawachi Tochigi Japan 32904

　　The IVC diameters in HD patients　　Since BW and stature as well as gender and age were not considered to be determinant factors of the IVC diameters, these factors were not accounted for in evaluating the IVC diameters in HD patients. The IVC diameters of stable anuric HD patients are shown in Table 2. In agreement with our previous observation [7-9] ,the reduction of BW from (51.7±12.6) to (49.3±12.6)kg by ultrafiltration during HD resulted in a significant (P<0.0001)reduction of the IVCe and IVCi from (14.9 ± 3.2) to (6.8±1.9)mm and (5.2±4.2) to (0.1±0.3) mm,respectively. Thus,CI values before and at the end of HD were calculated as (0.68±0.24) and (0.98±0. 05), respectively (P<0.0001).　　……

关键词： IVC The Inferior Vena Cava Diameter as a Marker of Dry Weight in Chronic Hemodialyzed Patients

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Visualization and Measurement of Water Distribution in Through-Plane Direction of Polymer Electrolyte Fuel Cell during Start-Up by Using Neutron Radiography

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Journal of Flow Control, Measurement & Visualization 2015年第3期3卷 122-133页

作者： Hideki Murakawa Katsumi Sugimoto Nobuki Kitamura Hitoshi asano Nobuyuki Takenaka yasushi Saito Department of Mechanical Engineering Graduate School of Engineering Kobe University Kobe Japan Research Reactor Institute Kyoto University Osaka Japan

Water management in a polymer electrolyte fuel cell (PEFC) is a key topic for PEFC operation. A microporous layer (MPL) has been recently used to improve the water flooding in the gas diffusion layer (GDL) around the catalyst layer. However, the mechanisms of this MPL are not completely understood because of the difficulty of measuring the water distribution during operation. To clarify the water-accumulation phenomena with the MPL, visualization and measurement of the water distribution in the through-plane direction of a small fuel cell is carried out by using neutron radiography. The parallelism of the neutron flux is optimized by using a collimator to observe the transient change in the water distributions, and two-dimensional water distributions in the through-plane direction of the PEFC can be obtained every 60 s. The differences in the water accumulation processes in the GDL without and with the MPL under the lands and channels are compared. It is observed that the water accumulation in the GDL under the land is greater than that under the channel during the period of early PEFC operation. Water evacuation from the GDL to the channel mainly occurs around the land corners. Furthermore, one-dimensional water distributions are calculated from the visualized water distributions, and the results without and with the MPL in the cathode are compared. The water thickness in the through-plane direction attains its maximum value around the boundary between the catalyst layer and the GDL without the MPL, whereas it is attained between the MPL and the GDL with the MPL. The maximum water accumulation in the GDL under the land without the MPL is higher than that with the MPL.

关键词： PEFC Microporous Layer Water Distribution Neutron Radiography

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