• Lan Li, Min Wang, Haiyun Wang, Min Yong, and Wenping Wang.
• Department of Obstetrics and Gynecology, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, China.
• Medicine (Baltimore). 2024 Nov 8; 103 (45): e40406e40406.

AbstractTo explore the factors influencing the clinical pregnancy rate in the Reproductive Center of the Affiliated Hospital of North Sichuan Medical College in the second cycle, a retrospective analysis of the clinical data of 175 patients who underwent the second cycle of intrauterine insemination (175 cycles) from July 2019 to July 2022 was performed. According to whether the patients reached clinical pregnancy, they were divided into the pregnant group (32 cycles) and non-pregnant group (143 cycles). The age, infertility years, infertility factors, infertility type, number of sinus follicles, intimal thickness, intimal type, basal follicle-stimulating hormone, basal luteinizing hormone, basal estradiol, stimulation regimen, season, body mass index, and male semen quality were statistically analyzed between the 2 groups. The number of intrauterine insemination (IUI) in the second cycle was 175, and the clinical pregnancy rate was 18.3% (32/175). The age of the pregnant group was lower than that of the non-pregnant group [(26.7 ± 1.07) vs (30.56 ± 0.51), P = .05]. The clinical pregnancy rate in patients aged ≤30 years was significantly higher than that in patients aged > 30 years [28.6% vs 7.1%, P < .05]. Among infertility factors, the pregnancy rate of patients who underwent IUI due to female factors was significantly higher than that of male factors, combined factors (both male and female), and unexplained infertility, and the differences were statistically significant [37.1% vs 22.4%, 18.2%, 3.2%, P < .05]. In multivariate logistic regression analysis, age and infertility factors were independent influencing factors of clinical pregnancy rate in the second cycle of IUI. In, while in artificial insemination, female age and infertility factors were important factors affecting the clinical pregnancy rate of the second cycle of IUI. If the outcome of the first cycle is not pregnant, the female age is <30 years, infertility is the female factor, and the second cycle of IUI can be considered.Copyright © 2024 the Author(s). Published by Wolters Kluwer Health, Inc.

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