INCIDENCE AND SIGNIFICANCE OF UNEQUAL GESTATIONAL SAC DIAMETER OR EMBRYO CROWN RUMP LENGTH IN TWIN PREGNANCY

被引：35

作者：

DICKEY, RP

OLAR, TT

TAYLOR, SN

CUROLE, DN

RYE, PH

MATULICH, EM

DICKEY, MH

机构：

[1] Fertility Institute, New Orleans, LA

[2] Tulane University School of Medicine, Department of Obstetrics and Gynecology, Section of Reproductive Endocrinology/Infertility, New Orleans, LA

来源：

HUMAN REPRODUCTION | 1992年 / 7卷 / 08期

关键词：

CROWN RUMP LENGTH; EMBRYO; GESTATIONAL SAC; ULTRASOUND; TWIN;

D O I：

10.1093/oxfordjournals.humrep.a137815

中图分类号：

R71 [妇产科学];

学科分类号：

100211 ;

摘要：

The incidence of differences in gestational sac diameter and crown-rump length, measured at the time of the first ultrasound, in which at least one gestational sac or crown-rump length could be visualized, were analysed retrospectively in 260 twin pregnancies in which one or both fetuses were delivered at term. The difference in gestational sac diameter averaged 1.2 +/- 0.1 mm for pregnancies which ended in twin births, compared to 2.0 +/- 0.3 mm when pregnancy ended in single births (P < 0.02). The difference in crown-rump length averaged 2.4 +/- 0.6 mm for pregnancies which ended in a single birth, compared to 0.9 +/- 0.1 mm for twin births (P = 0.02). Disparities of greater-than-or-equal-to 3 mm in gestational sac diameter (P < 0.05) or crown-rump length (P < 0.001) were associated with an embryo loss rate greater-than-or-equal-to 50%. The disparity in gestational sac diameter (P < 0.04) and crown - rump length (P < 0.01) was smaller in pregnancies resulting from assisted reproductive technologies, compared with pregnancies resulting from coitus or insemination. Differences in gestational sac diameter and crown-rump length in early pregnancy were unrelated to differences in birth weight, length or sex.

引用

页码：1170 / 1172

页数：3

共 6 条

[1] Dickey R.P., Olar T.T., Curole D.N., Taylor S.N., Rye P.H., Matulich E.M., The probability of multiple births with multiple gestational sacs or viable embryos are diagnosed at first trimester ultrasound, Hum. Reprod, 5, pp. 880-882, (1990)
[2] Dickey R.P., O1ar T.T., Curole D.N., Taylor S.N., Matulich E.M., Relationship of first-trimester subchorionic bleeding detected by color doppler ultrasound to subchorionic fluid, clinical bleeding, and pregnancy outcome, Obstet. Gynecol, 80, (1992)
[3] Finberg H.J., Birnholz J.C., Ultrasound observations in multiple gestations with first trimester bleeding: The blighted twin, Radiology, 132, pp. 137-142, (1979)
[4] Kelly M.P., Molo M.W., Maclin V.M., Binor Z., Rawlins R.G., Radwanska E., Human chorionic gonadotrophin rise in normal and vanishing twin pregnancies, Fertil. Steril, 56, pp. 221-224, (1991)
[5] Robinson H.P., Sonar measurement of fetal crown —rump length as means of assessing maturity in first trimester of pregnancy, Br. Med. J, 6, pp. 28-31, (1973)
[6] Schneider L., Bessis R., Simmonet T., The frequency of ovular resorption during the first trimester of twin pregnancy, Acta Genet. Med. Gemollol, 28, pp. 271-272, (1979)

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