To Evaluate Efficacy of Sonographic Cervical Length to Predict Preterm Labour (original) (raw)
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Study of Predictive Value of Transvaginal Sonographic Cervical Length Measurement in Preterm Labour
Healthy asymptomatic women. Period of gestation between 16-28 wks Low risk for preterm birth Singleton pregnancy. Exclusion criteria Any associated medical disorder. Presence of any fetal anomaly. Previous cervical circlage. Presence of any risk factor of preterm labor. Previous preterm birth PPROM Chorioamnionitis Polyhydramnios APH Twins IV. Methodology History: In each case detailed history is taken as per Performa at the time of admission.
Predicting preterm labour by cervical length measurement
International Journal of Reproduction, Contraception, Obstetrics and Gynecology, 2016
Background: This study was undertaken to ascertain the role of cervical length measurement by Transvaginal Ultrasonography as a predictor for preterm labour. Methods: Routine Antenatal cases presenting to the O.P.D. of Obstetrics and Gynaecology at 18-24 weeks of gestation were enrolled and subjected to transvaginal ultrasound for measurement of cervical length. The STUDY group consisted of 50 patients with cervical length being </=25mm. The CONRTOL group consisted of 50 patients with cervical length being >25mm. Patients were followed up to observe the outcome of their pregnancies. The data was analyzed using SPSS version 15.0 software. Results: The positive predictive value of cervical length </=25mm was 6%, 16%, 30% and 50% for delivery before 28, 32, 34 and 37 weeks respectively; the negative predictive value for the same was 100%, 100%, 98% and 86%. A cervical length of < 25 mm at the initial sonographic examination was associated with a relative risk (RR) of 15 for spontaneous preterm birth before 34 weeks and 3.75 for spontaneous preterm birth before 37 weeks. Maternal outcome was comparable in the study and control groups. However, the babies born in the study group had greater morbidities associated with prematurity, lower birth weight, higher NICU admission rates, longer duration of NICU stay and greater mortality rates as compared to the babies born in the control group. Conclusions: Measurement of cervical length aids in early detection of patients who are likely to go into preterm labour and identification of high-risk group.
Ultrasound in Obstetrics & Gynecology, 2002
AimThe aim of this study is to evaluate whether cervical length and morphology assessed by transvaginal ultrasound in women admitted in threatened labour, can predict preterm delivery prior to 34 weeks gestation.MethodOver a six‐month period, 25 women presenting with threatened preterm labour were prospectively recruited into the study. Women with ruptured membranes, chorioamnionitis or heavy vaginal bleeding requiring delivery were excluded. Transvaginal sonography for cervical length and morphology was performed shortly after admission. Demographic data, medical observations and interventions were recorded. Pregnancy outcomes were collected after delivery.ResultsThe mean gestation at recruitment was 27+4 weeks (range 21+°−32+6 weeks). 16% (4/25) of patients delivered before 34 weeks gestation. In the latter cases, the cervical lengths were all ≤ 25 mm and the interval between presentation and delivery was < 2 weeks. All pregnancies with a cervical length > 25 mm delivered af...
A study of cervical length measured ultrasonographically in prediction of preterm delivery
Obsgyne Review: Journal of Obstetric and Gynecology, 2017
Introduction-Cervical length appears to be an efficient test for predicting preterm birth. Transvaginal sonography (TVS) is the preferred route for cervical assessment to identify women at increased risk of spontaneous preterm birth and may be offered to women at increased risk of preterm birth. Methods-This was prospective observational study conducted in Obstetrics and Gynecology department of SMS Medical college, Jaipur, Rajasthan, Indiafrom August 2015 to July 2016. Out of obstetric cases attending antenatal OPD, cases of singleton pregnancies were selected at random. In this study all the participants were divided into 2 groups: Each group include 100 patients. Every participant underwent a transvaginal sonography (TVS), using probe of 5 to 7.5 MHz, measuring cervical length. Results-About 39 women in control group and 36 women in study group were primigravida, remaining were multigravida. History of preterm labour was present in 27 women in study group and 28 women in control group. Cervical length measurement was 21-26 mm in 30 (30%) women and among them 12 (44.44%) delivered preterm. Mean birth weight was 1.75±0.04 in control group and 1.75±0.06 in study group in which cervical length was between 21-26 mm. In our study in study group revealed Prevalence-27%, Positive predictive value-52.10%, Negative predictive value-88.70%, Sensitivity-81.48%, Specificity-75.34%. Conclusion-We found that TVS had good sensitivity, specificity, predictive value in both group. Thus measurement of cervical length by TVS can be used to predict increase risk of preterm delivery cases with threatened preterm labor.
Ultrasound assessment of cervical length in threatened preterm labor
Ultrasound in Obstetrics & Gynecology, 2003
Objective More than 70% of women presenting with threatened preterm labor do not progress to active labor and delivery. The aim of this study was to investigate the hypothesis that in women with threatened preterm labor, sonographic measurement of cervical length helps distinguish between true and false labor.
International Journal of Reproduction, Contraception, Obstetrics and Gynecology, 2017
Background: Preterm birth is the leading cause of perinatal morbidity and mortality. Transvaginal sonographic measurement of the cervix is a reliable alternative method for the assessment of cervical length as it allows better quality and more accurate visualization of the uterine cervix. Several studies have reported that cervical assessment on transvaginal sonography may be useful in the prediction of preterm delivery. The objective of this study was to assess cervical length at 20 to 24 weeks of gestation in low risk women and correlate with the gestational age at delivery.Methods: A prospective cohort study conducted in a tertiary care Military Hospital in Pune, India. 354 asymptomatic low risk antenatal women with gestational age of 20 to 24 weeks were studied. Cervical assessment with transvaginal sonography for the measurement of cervical length was performed using a 10 MHz transvaginal probe.Results: 7 percent women delivered preterm. The incidence of short cervix in low ris...
Preterm labor is a regular occurrence in pregnancy; an estimated 15 million babies are born prematurely each year, with the number increasing. This was a prospective study of pregnant women who came to the Maternity Teaching Hospital in Erbil, Kurdistan Province, Iraq, for an outpatient clinic. On a manageable sample of 150 singleton pregnancies. In this study, one hundred fifty singleton asymptomatic pregnancies encountered the inclusion criteria during the study period, 69 primi gravid, 81 multi gravid. The correlation between the cervical length at 20-24 weeks and preterm delivery was moderately poor (r =0.715), and this correlation was highly significant (P < 0.001). In another word, a better correlation was found between preterm delivery and cervical length at 20-24 weeks than at 10-14 weeks in the prediction of preterm delivery. This study also points towards the importance of serial ultrasound scans to detect those who are at higher risk. There was no statistically significant effect of age, parity. Finally, the findings revealed that trans vaginal ultrasound is more accurate at 20-24weeks than 10-14weeks gestation for prediction of preterm labor, it can be used routinely to prevent preterm birth.
Cervical Index: A Novel Sonographic ScreeningTest to Predict Preterm Birth
EC Gynaecology, 2021
Introduction: Currently, prematurity is the main cause of perinatal morbidity and mortality. Premature neonates are at risk for neurological disorders, developmental delays, vision, and hearing problems. Cervical length remains the only widely used sonographic marker for preterm labor. We suggest using cervical index (CI) defined as a ratio of cervical length to its width as another screening tool for preterm labor. Materials and Methods: This retrospective cohort study included 600 patients with singleton pregnancies. CI were measured between 12-17 weeks of gestation. CI were arbitrarily divided into 3 groups: less than 1, between 1 and 2 and more than 3. Gestational age at birth was obtained by reviewing patients' records. Results: CI of less than 1 was most predictive of preterm birth (sensitivity 84%, specificity 56%). CI of 3 and above has a reverse predictive value for preterm birth: only 6% of women in this group delivered at less than 37 weeks of pregnancy. Conclusion: Cervical index appears as a useful novel tool for predicting risk of preterm labor. 8. Sochacki-Wojcicka N., et al. "Anterior cervical angle as a new biophysical ultrasound marker for prediction of spontaneous preterm birth".