A comparison of pregnancy outcome of modified transvaginal cervicoisthmic cerclage performed prior to and during pregnancy

To compare the pregnancy outcome of the modified transvaginal cerclage performed preconception and during pregnancy. A retrospective trial was carried out in the Department of Obstetrics and Gynecology, Sir Run Run Shaw Hospital in Zhejiang, China. A total of 604 women with cervical incompetence underwent the cerclage, and the time of the operation was decided by the patients or depended on when the patient presented. Main outcome measures were the gestational age and the fetal outcome. After the cerclage, the mean gestational age at delivery and the term delivery rate were significantly higher in history-indicated conception cerclage compared to preconception cerclage (36.8 +/- 3.7 vs 35.8 +/- 4.7, p < 0.01; 76.1 vs 66.9%, p < 0.05). The mean gestational age at delivery and the term delivery rate were significantly higher in ultrasound-indicated compared to physical examination-indicated conception cerclage (35.0 +/- 5.7 vs 31.0 +/- 5.5, p < 0.01; 63.2 vs 23.3%, p < 0.001). The fetal survival rate had no difference in these two comparisons, respectively. The modified transvaginal cervicoisthmic cerclage is a promising and safe technique to improve obstetric outcomes in women with cervical incompetence in different cerclage indications, and history-indicated conception cerclage appears to have better pregnancy outcome.