Abstract
Background: Risk of scar defect is inversely correlated with lower uterine segment thickness. The study aims
to assess the diagnostic accuracy of sonographic measurement of the lower uterine segment thickness near
term in predicting uterine scar defect in women with prior Caesarean section and ascertain the best cut-off
value for predicting uterine rupture in our country.
Methods: This observational case series study was carried out at Department of Gynecology and Obstetrics,
Ziauddin University and Hospitals from January 2015 to June 2015. Women carrying singlet on pregnancy of
36-38 weeks with history of previous C-section were included in the study. Lower uterine segment measurement was done by trans abdominal ultrasound at 36-38 weeks gestation and these women are followed up
to the time of delivery.
Results: A total of 180 patients based on inclusion criteria were recruited in the study. Significant association
(p=.001) was found between LUS thickness values measured during pregnancy and status of scar at the time
of delivery. No significant association was found between scar thickness and mode of delivery (p= .390).
Scar dehiscence was noted in only one study participant.
Conclusion: We support the proposition that antenatal measurement of lower uterine segment measurement in women with previous caesarean section is a reliable tool in deciding which women should be given
a trial of labor.
Habiba Sharaf Ali, Dr Shahina Ishtiq, Bina Fawad, Rabel Gul. (2017) Sonographic Lower Uterine Segment Thickness Measurement And Risk Of Uterine Scar Defect In Women With Previous Caesarean Section., The Pakistan Journal of Medicine and Dentistry, Volume-6, Issue-1.
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