Correlation between inter-pregnancy interval and sonographically measured lower segment caesarean scar thickness

Uterine scar rupture is a serious complication of trial of labor after Caesarean section. Aim: To correlate interpregnancy interval and sonographically measured lower segment Caesarean scar thickness. Study design: Analytical, cross sectional. Methodology: Female patients (n=50) were enrolled in present study held at University Ultrasound Clinic,Green Town, University of Lahore as a reference placement for 6 months. Informed consent was taken from all of them. In this study, pregnant women who were gravida 2, with singleton pregnancy having one prior lower segment Caesarean section and the age between 20 and 35 years, were selected for the study. The interpregnancy interval of all women was calculated in months from the date of previous Caesarean section and conception of current pregnancy. Data analyzed by SPSS 22.0v. Results: Out of 50 subjects, 32(64%) females belonged to the group A, with mean scar thickness of 5.25 ± 0.54 mm and 18(36%) females were in the group B, with mean scar thickness of 3.93±0.65mm. The scar was found to be thicker in women of group A than of group B. The value of Pearson correlation coefficient was r = 0.71 with pvalue = 0.000 <α=0.05. Conclusion: This study concluded that Sonographically measured lower segment Caesarean scar thickness has significant positive correlation with interpregnancy interval. (author)