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Abstract

Purpose: Assessment of the uterine artery is becoming increasingly important in the prediction of early preeclampsia and a low birth weight. Incidents of caesarean section are gradually increasing, and it is mentioned that caesarean scar increases resistance of the uterine artery. The aim of the study was to evaluate the effects of a caesarean scar on resistance of the uterine artery.

Methods: Prospectively, a totally of 498 pregnant women were evaluated. The average of the last menstrual period of the participating pregnant women was calculated as 21 w 1, and the average age was 29.6 (±5.5). Uterine artery doppler USG examination was conducted on 250 pregnant women (one or more caesarean sections), and a control group consisted of 248 pregnant women (non-caesarean scar). The UtA-RI and UtA-PI values of the uterine artery were measured on the doppler USG examination and statistical analysis was performed.

Results: IBM SPSS (for Windows version 24) statistical software, ROC analysis, and student’s (independent) ttest methods were used for in the statistical evaluation of this study. There was no statistically significant difference between groups (p>0.05).

Conclusion: This study assessed the effects of a caesarean scar on the resistance of the uterine artery on the doppler USG examination. No statistically significant difference was observed in the UtA-RI and UtA-PI values, and only 1.9-3.5% of the variability in the UtA-RI and UtA-PI values, based on the obtained effect size, could be explained by an effect of the C/S scar.

Keywords:  Caesarean scar; Uterine artery; Doppler