Ultrasonographic assessment of lower uterine segment thickness and perinatal Outcomes in patients with a previous cesarean history
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Abstract
Objective: The purpose of the study was to establish the validity of the abdominal evaluation of lower uterine segment (LUS) thickness in patients having a previous cesarean section (CS) in predicting uterine rupture, and to evaluate if there is any effect of the number of a previous surgeries on adverse maternal and perinatal outcomes.
Materials and methods: A prospective case-control study was carried out between December 2017 and June 2018 in Dr. Zekai Tahir Burak Women’s Health Education and Research Hospital. 555 patients were classified into three groups; Group 1: patients having one previous CS, Group 2: patients having two previous CS, Group 3: patients having more than the two previous CS). Ultrasonographic measurements of the LUS, intraoperative findings and, adverse pregnancy outcomes were assessed.
Results: LUS thickness of group 2 was significantly less than the LUS thickness of the other groups (p=0.022). The feeling of pain was significantly more in the patients of group 2, when compared with the other groups (p=0.019). Pregnancy interval was the only parameter that had significant predictivity for adverse pregnancy outcomes for group 1(#CS=2) and group 3 (#CS≥4) (p=0.042, and p=0.021, respectively). In group 2 (#CS=3), age, the thickness of LUS, and thickness of subcutaneous adipose tissue were found to have significantly high predictivity for adverse pregnancy outcomes (p=0.012, p≤0.001, and p=0.007, respectively).
Conclusion: Measurement of LUS, in the patients who had previous CS, can be used for risk assessment and management. It is a non-invasive, reliable and, easily applicable method. Standardization of the measurement technique is a necessity.
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Accepted 2021-03-20
Published 2021-03-26
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