Uterine angle changes during the in vitro fertilization treatment cycle.

ABSTRACT: Studies have focused on uterine peristalsis and endometrial development, whereas knowledge is limited on cyclical changes in the uterocervical angle (the angle formed between the uterine corpus and cervix) during the menstrual cycle. Here, these dynamic changes were investigated. We conducted a retrospective analysis of 99 freeze-thawed blastocyst transfer cycles in 2020 and a prospective analysis of 192 cycles between 2022 and 2023. Transvaginal ultrasonography was performed to measure the uterine angle during the menstrual, ovulatory, and implantation periods. In the prospective study, conditions were standardized by instructing patients to empty their bladders and avoid uterine compression during scanning. In the retrospective analysis, the uterine angle significantly differed between t

SUBMITTER: Yoshihara T 

PROVIDER: S-EPMC12267490 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature