Endometrial scratch injury in infertile women undergoing in vitro fertilization cycles: a systematic review and meta-analysis
Abstract
Objective: This study aimed to evaluate the effect of endometrial scratch injury (ESI) in infertile women undergoing in vitro fertilization (IVF).
Methods: We screened MEDLINE, CENTRAL, EMBASE, Web of Science, and the Cochrane Central Register from inception to April 2023 using keywords related to endometrial scratch, implantation, infertility, and IVF. We included 41 randomized, controlled trials of ESI in IVF cycles (9084 women). The primary outcomes were the clinical pregnancy, ongoing pregnancy, and live birth rates.
Results: The clinical pregnancy rate was reported in all 41 studies. The odds ratio (OR) for the clinical pregnancy rate had an effect estimate of 1.34 with a 95% confidence interval (CI) of 1.14 to 1.58. The live birth rate was reported in 32 studies with 8129 participants. The OR for the live birth rate had an effect estimate of 1.30 with a 95% CI of 1.06 to 1.60. The multiple pregnancy rate was reported in 21 studies with 5736 participants. The OR for the multiple pregnancy rate had an effect estimate of 1.35 with a 95% CI of 1.07 to 1.71.
Conclusion: ESI increases the clinical pregnancy, ongoing pregnancy, live birth, multiple pregnancy, and implantation rates in women undergoing IVF cycles.
How strong is the evidence?
Evidence Hub reads this as a meta-analysis, done in people. Its evidence level is 1 of 5 (Highest · pooled evidence). Pooled evidence from several studies sits at the top of the evidence pyramid. Reported size: 9,084 participants or records.
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