A study of association of cervical length at 18 weeks and 23 weeks gestation in predicting preterm delivery in twin pregnancies

New Indian Journal of OBGYN

article

Shilpa Bajpai¹  Devendra Arora¹  Sushil Chawla¹ 

[1] INHS Asvini, Near RC Church, Navy Nagar, Colaba

关键词: Twin pregnancy;    cervical length;    preterm delivery;    short cervix;    gestation;   

DOI  :  10.21276/obgyn.2021.7.2.23

学科分类：社会科学、人文和艺术（综合）

来源: Barpeta Obstetrics and Gynaecological Society

【 摘 要 】

Background: Twin pregnancy complicates 1.4% of all pregnancies but accounts for 15% of neonatal mortality. Theability to predict preterm delivery could allow targeted intervention such as antenatal steroid induction, cervicalencerclage and tocolysis, which might improve neonatal outcome. The length of cervix may be useful in predictingthe risk of premature delivery, with a shorter cervix predicting a higher risk. Objectives: The present study wasundertaken to evaluate the cervical length during 18th and 23rd week period of gestation in twin pregnancy forpredicting preterm delivery and also find the correlation between cervical length and occurrence of preterm birth.Method: In this prospective observational study, a total of 69 antenatal patients underwent cervical length screeningat 18 weeks and 23 weeks period of gestation at a tertiary level teaching hospital were recruited. 17 women did notdeliver at the study site and were lost to follow up. 3 patients have been excluded from the study as they have beenelectively terminated because of obstetrical reasons. Results: 22.4% women at 18 weeks period of gestation and42.9% women at 23 weeks period of gestation with cervical length <25mm delivered preterm, making the relationshipof short cervix to preterm delivery statistically significant (P value< 0.001). Sensitivity was 18.92% at 18 weeks andsensitivity was 54.05% at 23 weeks period of gestation while specificity and positive predictive value (PPV) was100% at 18 week and 23 weeks period of gestation. Conclusion: The present study shows that there is fair amount ofnegative correlation between cervical length and the occurrence of pre-term birth. Which means that as the cervicallength increases the chance of preterm birth decreases. Shorter the cervix greater is the likelihood of preterm delivery.

【 授权许可】

CC BY-NC-SA