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Korean Journal of Obstetrics & Gynecology 1997;40(3):510-513.
Published online January 1, 2001.
The Effect of Hydrosalpinx and its Surgical Correctionon Pregnancy Rate and Implantation Rate following in vitro Fertilizationand Embryo Transfer.
Mi Kyoung Koong, In Ok Song
Department of Obstetrics and Gynecology, Samsung Cheil Hospital and Women's Healthcare Center, Seoul, Korea.
The aim of this study is to determine whether or not hydrosalpinx affects pregnancy rate and implantation rate adversely in human IVF-ET program. 110 infertile couples with tubal factor undertaken IVF-ET treatment from May 1995 through April 1996 were included. Patients with tubal factor combined with other factors were excluded from this study. The hydrosalpinx group included 35 patients who had unilateral or bilateral hydrosapinx. Fifty four patients with proximal tubal occlusion without hydrosalpinx served as a control. The corrected hydrosalpinx group included 21 patients hydrosalpinx served as a control The corrected hydrosalpinx group included 21 patients who had undertaken either salpingectomy(n=5) or salpingoneostomy(n=16) before IVF-ET cycle. Controlled ovarian hyperstimulation was performed using GnRH agonist/human menopausal gonadotropin or follicular stimulation hormone(FSG). Thirty four hours after intramuscular injection of 10,000 IU human chorionic gonadotropin(hCG), trasvaginal sonography-guided oocyte retrieval was done, The cleaved embryos were transferred to the uterus on day two or three after fertilization. There was no significant difference in age(mean +/- SEM; 32.9 +/- 0.4, 32.7 +/- 0.6, 31.4 +/- 0.6), basal FSH level(7.1 +/- 0.3, 7.2 +/- 0 0.3, 7.0 +/- 0.4 mIU/ml) and estradiol on the day of hCG injection(2674 +/- 219, 3239 +/- 304, 3376 +/- 360 pg/ml) among the control, hydrosalpinix and corrected hydrosalpinx group, respectively(p > 0.05). The number of trasferred embryos(5.1 +/- 0.3, 5.6 +/- 0.3 and 5.4 +/- 0.6) were similar between the groups. The clinical pregnancy rate of 8.3% in hydrosalpingeal group was significantly lower than 25.4% of control group (p=0.057). However, in corrected hydrosalpinx group, pregnancy rate of 27.3% compared well with the control group. The implantation rate showed a similar pattern with pregnancy rate, i.e., hydrosalpingeal group had the lowest implantation rate of 2.0%, which was significantly lower than 11.6% of control group. In the corrected hydrosalpinx group, implantation rate(9.3%) recovered as that of the control group. The ectopic pregnancy rate(11.1%) of the hydrosalpingeal group was higher than that of the control group(1.7%) and was intermediate(4.5%) in corrected hydrosalpinx group(p > 0.05). In conclusion, these data show that hydrosalpinx affects the pregnancy rate adversely in IVF-ET cycyle. Thus, it is suggested that surgical correction of the hydrosalpinx before the initiation of IVF-ET cycle may be beneficial in increasing the pregnancy rate as well as decreasing the ectopic pregnancy.
Key Words: Hydrosalpinx, IVF-ET, Pregnancy, Implantation

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