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題 名 | Maternal Urine Alpha-fetoprotein Concentrations between 14 and 21 Weeks of Gestation=懷孕14至21週之母尿甲型胎兒蛋白濃度 |
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作 者 | 謝燦堂; 徐振傑; 羅良明; 劉瑞德; 宋永魁; | 書刊名 | 長庚醫學 |
卷 期 | 22:2 1999.06[民88.06] |
頁 次 | 頁234-239 |
分類號 | 417.14 |
關鍵詞 | 甲型胎兒蛋白; 尿液; 中位值倍數值; 唐氏症篩檢; Alpha-fetoprotein; Urine; Multiple of medians; Down syndrome screening; |
語 文 | 英文(English) |
中文摘要 | 背景:本研究主要目的在於探討在懷孕14至21週母尿甲型胎兒蛋白濃度之正常範 圍。 方法:兩年間,總共收集 268 名正常單胞胎孕婦在懷孕 14 至 21 週之尿液,並偵測 其甲型胎兒蛋白濃度。尿液甲型胎兒蛋白濃度再以尿液肌氨酸肝濃度,來校正尿液因收集時 間不同之濃度差異。 然後以線性迴歸計算出每週標準中位值,再將尿液甲型胎兒蛋白 / 肌 氨酸肝之濃度換算成中位值倍數值 (MoM)。所有案例之懷孕週數則以超音波測量週數為主。 結果:尿液甲型胎兒蛋白濃度及其肌氨酸肝校正後濃度會隨著週數的增加而增加。尿液甲型 胎兒蛋白 / 肌氨酸肝 MoM 值呈一對數常態分佈, 其平均值和標準誤差分別為 0.0071 和 0.3228。尿液甲型胎兒蛋白 / 肌氨酸肝 MoM 中位值、第 10 百分比和第 90 百分比值分別 是 0.98, 0.43 and 3.61。 分別有 4.9 % (13/268) and 16 % (43/268) 孕婦其尿液甲 型胎兒蛋白 / 肌氨酸肝值小於 0.31 MoM and 0.5 MoM. 結論:由於每週的尿液甲型胎兒蛋 白中位值不同,將來如要發展母尿唐氏症篩檢,必須先建立尿液甲型胎兒蛋白濃度參考的正 常中位值。 |
英文摘要 | Background:The aim of this study was to ascertain the normal range of the midtrimester maternal urine alpha-fetoprotein (AFP) concentyrations in Taiwanese pregnancies. Methods:AFP was measured in the urine samples, obtained before genetic amniocentesis, from 268 women with normal singleton pregnancies between 14 and 21 weeks of gestation. Week-specific median values for urine AFP/creatinine (Cr) were calculated by weighted linear regression after log transformation and the data were converted to units in the multiple of the median (MoM). The gestational age in all cases was determined by ultrasound parameters. Results:The levels of urine AFP and AFP/Cr increased gradually with advancing gestational age. The AFP/Cr MoM values of singleton pregnancies after log transformation showed a normal distribution with a mean (standard deviation) of 0.0071 (0.3228). The median, 10th and 90th centiles of AFP/Cr were 0.98, 0.43 and 3.61 MoM, respectively. Of the pregnant Taiwanese women studied, 4.9% (13/268) and 16% (43/268) had urine AFP/Cr MoM levels less than 0.31 MoM and 0.5 MoM respectively. Conclusion:The establishement of a reference range which allows for gestational differences in AFP/Cr levels is essental for further antenatal testing. |
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