Varma T R, Patel R H, Pillai U
Acta Obstet Gynecol Scand. 1986;65(3):229-33. doi: 10.3109/00016348609155176.
We studied 30 normal pregnant women from the first trimester to 36 weeks. This group of women had had no previous miscarriage, termination of pregnancy, operations on the cervix, or premature labor. Fifteen were primigravidae and the remainder were multigravidae. There was no significant difference in the length of the cervix from 10 to 36 weeks of gestation (p greater than 0.05). The mean width of the cervix gradually increased from 10 to 36 weeks of gestation (p less than 0.01). The mean width of the cervical canal showed no significant change from 10 to 36 weeks of gestation (p greater than 0.05).
我们研究了30名从孕早期至孕36周的正常孕妇。这组女性既往无流产、终止妊娠、宫颈手术或早产史。15名为初产妇，其余为经产妇。妊娠10至36周期间宫颈长度无显著差异（p>0.05）。妊娠10至36周期间宫颈平均宽度逐渐增加（p<0.01）。妊娠10至36周期间宫颈管平均宽度无显著变化（p>0.05）。
