Lal Neena, Deka Deepika, Mittal Suneeta
Department of Obstetrics and Gynecology, All India Institute of Medical Sciences, New Delhi, India.
J Obstet Gynaecol Res. 2008 Jun;34(3):314-7. doi: 10.1111/j.1447-0756.2007.00695.x.
To study the persistence of nuchal cord by ultrasound at various periods of gestation.
Ultrasound was done on 200 consecutive pregnant women and nuchal cord was documented at 18-20, 30-32 and 36-38 weeks' gestation.
The incidence of nuchal cord was 6% at 18-20 weeks, 7.5% at 30-32 weeks, 26.5% at 36-38 weeks and 28% at birth. The persistence of nuchal cord was 8.3% from 18 to 20 to 30-32 weeks, 26.6% from 30-32 to 36-38 weeks and 84.9% from 36-38 weeks to delivery. Using the Friedman test, the change in the presence of nuchal cord was significant (P < 0.001).
Nuchal cord keeps appearing and disappearing over time. Its
通过超声研究妊娠各期脐带绕颈的持续情况。
对200例连续孕妇进行超声检查，并记录妊娠18 - 20周、30 - 32周和36 - 38周时的脐带绕颈情况。
脐带绕颈的发生率在妊娠18 - 20周时为6%，30 - 32周时为7.5%，36 - 38周时为26.5%，出生时为28%。脐带绕颈从18 - 20周到30 - 32周的持续率为8.3%，从30 - 32周到36 - 38周为26.6%，从36 - 38周到分娩为84.9%。采用Friedman检验，脐带绕颈情况的变化具有显著性（P < 0.001）。
脐带绕颈随时间不断出现和消失。其……
