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Transcervical resection of adhesion (TCRA) and postoperative adjuvant estrogen and progestin are the main treatments for cavity adhesions, but the recurrence rate after surgery is still high. It was showed that aspirin could promote endometrial proliferation and repair after TCRA in patients with severe cavity adhesions, but the effect on reproduction was uncertain. To assess the effect of aspirin on uterine arterial blood flow and endometrium in moderate and severe intrauterine adhesion after transcervical resection of adhesion. The databases used included Cumulative Index to PubMed, EMBASE, Chinese National Knowledge Infrastructure (CNKI), and Wanfang database. Studies published before June 2022 were included. Each participant received an aspirin-based intervention aimed at improving uterine status, which was compared to a sham intervention. The primary outcome measure was a change in endometrium thickness. Secondary outcomes included uterine artery resistance index, blood flow index, and endometrial arterial resistance index. A total of 19 studies ( n  = 1361 participants) that met the inclusion criteria were included in this study. The aspirin-based intervention was strongly associated with better clinical outcome at second-look endometrium thickness (MD 0.81, CI 0.46–1.16;  p  &lt; .00001) and blood flow Index (FI) (MD 4.1, CI 2.3–5.9;  p  &lt; .00001). Besides, the analysis of arterial pulsatility index (PI) showed a significantly reduced after transcervical resection of adhesion (MD −0.9, CI −1.2 to 0.6;  p  &lt; .00001); whereas no significant difference was found in endometrial arterial resistance index (RI) (95% CI, −0.30 to 0.01;  p  = .07). Our study proved the effect of aspirin on uterine arterial blood flow and endometrium in moderate and severe intrauterine adhesion after transcervical resection of adhesion. However, the review requires evidence from additional randomized controlled trials and high-quality research. More strictly designed research studies are needed to assess the effectiveness of aspirin administration after transcervical resection of adhesion.

the journal of maternal-fetal and neonatal medicine

The effect of aspirin on uterine arterial blood flow and endometrium in moderate and severe intrauterine adhesion after transcervical resection of adhesion: a systematic review and meta-analysis