中國醫藥大學機構典藏 China Medical University Repository, Taiwan:Item 310903500/28906
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    题名: The prediction of the flash point for binary aqueous-organic solutions
    作者: Liaw, HJ;Chiu, YY
    贡献者: 公共衛生學院職安系;China Med Univ, Dept Occupat Safety & Hlth, Taichung, Taiwan
    日期: 2003
    上传时间: 2010-09-24 14:00:50 (UTC+8)
    出版者: ELSEVIER SCIENCE BV
    摘要: AIM: To study the change of portal blood flow for the prediction of the status of right-sided heart failure by using non-invasive way. METHODS: We studied 20 patients with rheumatic and atherosclerotic heart diseases. All the patients had constant systemic blood pressure and body weight 1 week prior to the study. Cardiac index (CI), left ventricular end-diastolic pressure (LVEDP), mean aortic pressure (AOP), pulmonary wedge pressure (PWP), mean pulmonary arterial pressure (PAP), mean right atrial pressure (RAP), right ventricular end-diastolic pressure (RVEDP) were recorded during cardiac catheterization. Ten patients with RAP <10 mmHg were classified as Group 1. The remaining 10 patients with RAP greater than or equal to10 mmHg were classified as Group 2. Portal blood velocity profiles were studied using an ultrasonic Doppler within 12 h after cardiac catheterization. RESULTS: CI, AOP, and LVEDP had no difference between two groups. Patients in Group I had normal PWP (14.6+/-7.3 mmHg), PAP (25.0+/-8.2 mmHg), RAP (4.7+/-2.4 mmHg), and RVEDP (6.4+/-2.7 mmHg). Patients in Group 2 had increased PWP (29.9+/-9.3 mmHg), PAP (46.3+/-13.2 mmHg), RAP (17.5+/-5.7 mmHg), and RVEDP (18.3+/-5.6 mmHg) (P<0.001). Mean values of maximum portal blood velocity (Vmax), mean portal blood velocity (Vmean), cross-sectional area (Area) and portal blood flow volume (PBF) had no difference between 2 groups. All the patients in Group 1 had a continuous antegrade portal flow with a mean percentage of peak-to-peak pulsatility (PP) 27.0+/-8.9% (range: 17-40%). All the patients in Group 2 had pulsatile portal flow with a mean PP 86.6+/-45.6 (range: 43-194%). One patient had a transient stagnant and three patients had a transient hepatofugal portal flow, which occurred mainly during the ventricular systole. Vmax, Vmean and PBF had a positive correlation with CO (P<0.001) but not with AOP, LVEDP, PWP, PAP, RAP, and RVEDP. PP showed a good correlation (P<0.001) with PWP, PAP, RAP, and RVEDP but not with CI, AOP, and LVEDP. All the patients with PP >40% had a right-sided heart failure with a RAP=10 mmHg. CONCLUSION: The measurement of PP change is a simple and non-invasive way to identify patients with right heart failure.
    關聯: JOURNAL OF HAZARDOUS MATERIALS 101(2):83-106
    显示于类别:[醫務管理學系暨碩士班] 期刊論文

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