Study on Risk Factors Related to Intrauterine Adhesion Based on Meta-Analysis

OBJECTIVE: Intrauterine adhesion (IUA) is a severe complication that occurs following abortion. To evaluate the related risk factors of uterine cavity adhesion by meta-analysis. METHODS: The research literature on the influencing factors of patients with intrauterine adhesions published from January 2010 to December 2020 in PubMed, EMBASE, Cochrane Library, web of science, CNKI, Wanfang Data, VIP, and CBM were retrieved by computer. Two evaluators independently screened the literature, extracted the data, and evaluated the treatment according to the inclusion and exclusion criteria and then analyzed it with revman5.3 software. RESULTS: Finally, 12 literatures were included, with a total sample size of 2341 cases. The results of meta-analysis showed that pelvic inflammation (p = 0.05), negative pressure during uterine suction (p < 0.0001), and uterine suction time (p < 0.00001) were the risk factors for uterine cavity adhesion. The combined or and 95% CI of each factor were 2.05 (1.24, 3.38), 125.61 (67.35, 183.87), and 4.52 (4.21, 4.84), respectively. However, the number of pregnancies, the number of curettages, the average number of births, abortion, myomectomy, menstrual abnormalities, and infertility have little impact on the occurrence of intrauterine adhesions (p > 0.05). CONCLUSION: Pelvic inflammatory disease, negative pressure during uterine suction and uterine suction time are the risk factors leading to uterine cavity adhesion.