SONOGRAPHIC ASSESSMENT OF CERVICAL LENGTH VS BISHOP SCORE IN PREDICTING OUTCOME OF LABOUR INDUCTION
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Keywords
Cervical length, Bishop score, labor induction, nulliparous women, transvaginal ultrasound, successful induction, predictive value, pre-induction assessment, obstetrics, cervical ripening.
Abstract
Background: The ability to predict successful labor induction is essential in managing nulliparous women. This study compares the effectiveness of cervical length (CXL) measurement via transvaginal ultrasound and the Bishop score (BS) in predicting the success of labor induction.
Methods: A cohort of 422 nulliparous women undergoing labor induction was studied. The predictive value of CXL and BS was assessed by evaluating the correlation between these parameters and the success of labor induction within 24 hours.
Results: Both CXL and BS were found to be significant predictors of successful induction. The sensitivity and specificity of CXL were 50.3% and 63.2%, respectively, with a cutoff value of ≤3.05 cm. The Bishop score showed comparable predictive value, with a cutoff of ≥3. The success rate of induction was 74.9%, and the failure rate was 25.1%. Our findings are consistent with several previous studies but highlight some differences in the optimal cut-off values and diagnostic characteristics between studies.
Conclusion: Cervical length, as measured by transvaginal ultrasound, can be considered a viable alternative to the Bishop score for predicting labor induction success. Both methods, when used together, offer a more comprehensive approach to predicting induction outcomes. Further research is needed to refine cut-off values and improve prediction accuracy.
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Dr. S. Rathipriya
Assistant Professor, Department of Obstetrics and Gynaecology, Government Dindigul Medical College, Tamil Nadu, India.
Dr.R.Shanmugapriya
Assistant Professor, Department of Biochemistry, Government Medical College and Hospital, Annamalai Nagar, Cuddalore Tamil Nadu, India.
Dr.J.Arunkumar
Associate Professor, Department of Pharmacology, K.A.P Viswanatham Government Medical College, Tiruchirapalli, Tamil Nadu, India.
Dr.R.Gopinathan
Assistant Professor, Department of Microbiology, Government Dindigul Medical College, Tamil Nadu, India.