The Journal of Practical Medicine ›› 2025, Vol. 41 ›› Issue (1): 95-99.doi: 10.3969/j.issn.1006-5725.2025.01.016

• Drugs and Clinic Practice • Previous Articles     Next Articles

The effect of aspirin on frozen thawed embryo transfer in endometriosis with thin endometrium

Min ZHOU1,Xiaoxiao ZHANG1,Zhao WU2()   

  1. Center for Reproductive Medicine,Department of Obstetrics and Gynecology,Sichuan Provincial People's Hospital,School of Medicine,University of Electronic Science and Technology of China,Chengdu 610072,Sichuan,China
  • Received:2024-05-06 Online:2025-01-10 Published:2025-01-14
  • Contact: Zhao WU E-mail:Dexterw@126.com

Abstract:

Objective To analyze the effect of aspirin addition on endometrial conditions and pregnancy outcomes in endometriosis-related patients with thin endometrium. Methods A retrospective analysis was conducted on endometriosis-related patients with thin endometrium (thickness < 7 mm) undergoing frozen-thawed embryo transfer at the Reproductive Medical Centre from January 2019 to May 2023 was conducted. Patients undergoing hormone replacement therapy with aspirin (Observation group, n = 162) were compared with those receiving increased estrogen alone (Control group, n = 152). Endometrial parameters before embryo transfer and clinical outcomes were compared between the groups. Results Compared to the Control group, the Observation group showed significant improvements in pulsatility index (PI) [(0.77 ± 0.20) vs. (0.84 ± 0.27),P < 0.05], resistance index (RI) [(0.49 ± 0.10) vs. (0.63 ± 0.10),P < 0.01], and systolic/diastolic (S/D) ratio [(1.94 ± 0.49) vs. (2.22 ± 0.47),P < 0.01]. Moreover, there was a significant increase in the embryo implantation rate (38.00% vs. 27.24%, P < 0.01), clinical pregnancy rate (56.17% vs. 42.11%, P < 0.05) and live birth rate (84.62% vs. 68.75%, P < 0.05). Conclusion In endometriosis-related patients with thin endometrium, the addition of aspirin significantly improved uterine and spiral artery blood flow, thereby enhancing pregnancy outcomes during frozen-thawed embryo transfer.

Key words: endometriosis, thin endometrium, aspirin, frozen embryo transfer

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