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題 名 | Measurement of Glomerular Filtration Rate: A Comparison of Different Methods |
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作 者 | Chiu,Nan-tsing; Liu,Chung-shin; Yao,Wei-jen; | 書刊名 | 核子醫學雜誌 |
卷 期 | 10:3 1997.07[民86.07] |
頁 次 | 頁82-87 |
分類號 | 415.74 |
關鍵詞 | 腎絲球過濾率; Comparative study; Creatinine; Glomerular filtration rate; Tc-99m DTPA; |
語 文 | 英文(English) |
英文摘要 | Background: Glomerular filtration rate (GFR) can be determined by various techniques. We examined the accuracy of different techniques in estimating GFR. Methods: Twenty-five adult patients with a wide range of renal function were included in this study. We assessed GFR by use of formulae predicting GFR from serum creatinine concentration, scintigraphic methods with one and two blood samples, and the disappearance rate constant derived from an external probe detector. The GFR calculated from two blood samples was regarded as the reference value. Results: A single blood sample at 3 hours was the most accurate technique, with a standard error of the estimate (SEE) of 5.1 mL/min. A single blood sample at 1 hour and the external probe detector were less reliable (SEE 11.4-17.9 mL/min). Predicting GER from serum creatinine using formulae was the least accurate (SEE 18.0-1 8.4 mL/min). We also observed that from 40 to 120 minutes post-injection, the longer the time interval the more accurate was the estimate of GFR by the external probe detector. Conclusions: The one-sample method at 3 hours is recom mended when very accurate results are required. The one-sample method at 1 hour is simple and sufficiently precise-for clinical practice. The external probe detector can provide accurate and continuous monitoring of renal function. Serum creatinine, by using formulae, can be used to roughly predict GFR. |
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