
孕周
The uterine heights of 550 normal pregnant women at different gestational weeks were measured.
用宮高測量方法測量550例正常孕婦不同孕周的宮高值。
The situations of the placenta, amniotic fluid, and fetus should be frequently monitored after 40 gestational weeks.
妊娠40周後應加強對胎盤、羊水及胎兒宮内狀況的監護。
Conclusion: The FS can be used as a biochemical index for estimating gestational weeks and evaluate feto-placental unit function.
結論: FS可作為估計孕周、判定胎兒-胎盤單位功能的一項生化指标。
Methods: By radioimmunoassay, maternal plasma CRH concentration was measured at different gestational weeks and pregnancy outcomes were followed up.
方法:采用放射免疫方法測定早産、足月産及過期産孕婦不同孕周血漿CRH水平并隨訪跟蹤觀察。
The birth prevalence rate had a 31.8 % decrease when births were calculated after 28 gestational weeks and compared with those from 20 gestational weeks.
如果從孕滿28周開始監測,則高發地區出生患病率較孕滿20周監測率下降31.8%。
妊娠周數(gestational weeks)是衡量胎兒發育階段和孕期進程的核心指标,其定義為從末次月經第一天(LMP)開始計算的完整周數。根據世界衛生組織(WHO)的标準,正常妊娠周期為37-42周,不足37周定義為早産,超過42周則為過期妊娠。
臨床應用中,妊娠周數的計算方式分為兩種:
在胎兒發育評估中,妊娠周數與器官成熟度直接相關:
國際婦産科聯盟(FIGO)建議,所有醫療機構應采用統一妊娠周數計算标準,以确保臨床決策和科研數據的可比性。
Gestational Weeks(孕周) 指從孕婦末次月經(Last Menstrual Period, LMP)的第一天開始計算的懷孕周期數,用于衡量妊娠進展和胎兒發育階段。以下是詳細解釋:
預産期(EDD)可通過Naegele法則估算:
$$
text{EDD} = text{LMP日期} + 1,年 - 3,個月 + 7,天
$$
例如,若末次月經為2025年1月1日,預産期為2025年10月8日。
如需更個性化評估,建議結合超聲檢查及醫生指導。
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