TY  - JOUR
A1  - Al Naimi, Ammar
A1  - Jennewein, Lukas
A1  - Mouzakiti, Niki
A1  - Louwen, Frank
A1  - Bahlmann, Franz
T1  - The effect of the onset of labor on the characteristics of the cesarean scar
T2  - International journal of gynecology & obstetrics
N2  - Objective: To assess the effect of cesarean section (CS) timing, elective versus unplanned, on the residual myometrial thickness (RMT) and CS scars. Methods: This is a prospective single-blinded observational cohort study with 186 observations. Patients indicated to undergo first singleton CS were preoperatively recruited. Exclusion criteria were history of repeated CS, vertical hysterotomy, diabetes, and additional uterine surgeries. Sonographic examination was performed for assessing the RMT ratio, the presence of a niche, fibrosis, and the distance from the scar to the internal os (SO) 1 year after CS. Power analysis was performed with 0.05 α, 0.1 β, and all statistical analyses were conducted with Stata®. Results: Wilcoxon rank-sum test for the association between CS timing, RMT ratio and SO showed Z values of −0.59 and −4.94 (P = 0.553 and P < 0.001), respectively. There was no association between CS timing and niches and fibrosis (P > 0.99 and P = 0.268, respectively). Linear regression between SO and the extent of cervical dilatation showed a −0.45 β (95% confidence interval −0.68 to −0.21) and a 10.22-mm intercept (P < 0.001). Conclusion: RMT is independent of the timing of CS, but the SO distance shows a negative linear relationship with the cervical dilatation.
KW  - cesarean section
KW  - niche
KW  - residual myometrial thickness
Y1  - 2021
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/63913
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-639134
SN  - 1879-3479
N1  - This study was supported by the Dr. Senckenberg Foundation, Frankfurt am Main.
N1  - Early View: Online Version before inclusion in an issue
N1  - Version of Record: http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hebis:30:3-627782
VL  - 2021
IS  - online version before inclusion in an issue
SP  - 1
EP  - 5
PB  - Wiley
CY  - Hoboken, NJ
ER  -