Association Between Cervical Length at 18-23 Weeks of Gestation and Spontaneous Preterm Delivery: A Cross Sectional Study
Introduction: Preterm birth is childbirth occurring at less than 37 completed weeks or 259 days of gestation, is a major determinant of neonatal mortality and morbidity and has long-term adverse consequences for health. Identifying ways to address preventable causes of preterm birth should be a top priority in developing regions of the world. the present study was planned to find the association between cervical length at 18 to 23 weeks of gestation done as a routine during all second level scans and spontaneous preterm delivery. Patients and Methods: This is a hospital based cross sectional study conducted during the period from January 2019 to December 2019. A total of 205 women presenting with singleton pregnancies between 18- 23 weeks of gestations were assessed by transvaginal ultrasound for the measurement of cervical length. Patients were interviewed and their demographic data such as age, obstetric index(GPALD), obstetric history such last menstrual period (LMP), estimated delivery date (EDD) and current pregnancy details such as BP, pulse rate, pallor, period of gestation, were recorded in a predesigned pro forma. Results: In a total of 205 subjects, the average age was found to be 23.26 ± 3.49 years with 52.2% of the women being primigravida. The mean gestation age at the time of enrollment was 20.72 ± 1.00 weeks with 33% of women showing a cervical length of 26-30 mm. The delivery outcome was found as 11% preterm, majority (89.27%) was term delivery. Conclusion: The present study showed that a significantly higher number of women with cervical length ≤ 30 mm (assessed at 18 to 23 weeks of gestation) had preterm labour compared to a woman with cervical length > 30 mm.