The clinical outcomes of five groups of infertility patients receiving frozen- thawed, cleavage-stage embryo transfers with exogenous hormone protocols with or without a depot gonadotropin-releasing hormone （GnRH） a...The clinical outcomes of five groups of infertility patients receiving frozen- thawed, cleavage-stage embryo transfers with exogenous hormone protocols with or without a depot gonadotropin-releasing hormone （GnRH） agonist were assessed. A retrospective cohort analysis was performed on 1003 cycles undergoing frozen-thawed, cleavage-stage embryo transfers from January 1, 2012 to June 31, 2015 in the Reproductive Medicine Center of Wuhan General Hospital of Guangzhou Military Region. Based on the infertility etiologies of the patients, the 1003 cycles were divided into five groups： tubal infertility, polycystic ovary syndrome （PCOS）, endometriosis, male infertility, and unexplained infertility. The main outcome was the live birth rate. Two groups were set up based on the intervention： group A was given a GnRH agonist with exogenous estrogen and progesterone, and group B （control group） was given exogenous estrogen and progesterone only. The results showed that the baseline serum hormone levels and basic characteristics of the patients were not significantly different between groups A and B. The live birth rates in groups A and B were 41.67% and 29.29%, respectively （P〈0.05）. The live birth rates in patients with PCOS in groups A and B were 56.25% and 30.61%, respectively （P〈0.05）. The clinical pregnancy, implantation and on-going pregnancy rates showed the same trends as the live birth rates between groups A and B. The ectopic pregnancy rate was significantly lower in group A than in group B. We concluded that the live birth rate was higher and other clinical outcomes were more satisfactory with GnRH agonist co- treatment than without GnRH agonist co-treatment for frozen-thawed embryo transfer. The GnRH agonist combined with exogenous estrogen and progesterone worked for all types of infertility tested, especially for women with PCOS.展开更多
The endometrial condition is a significant factor for successful pregnancy. To regulate endometrial function in fertility treatment, prednisolone (PSL) is administered for suppression of increased natural killer cells...The endometrial condition is a significant factor for successful pregnancy. To regulate endometrial function in fertility treatment, prednisolone (PSL) is administered for suppression of increased natural killer cells and stimulation of endometrium embryo transfer (SEET) to enhance communication between embryo and maternal tissues. We attempted to improve the endometrial condition by PSL administration and SEET during frozen–thawed blastocyst transfer (FBT). Patients took PSL (5 mg) 3 times daily for 3 days after ovulation during the FBT cycle. To analyse effects of PSL combined with SEET, we determined rates of chemical pregnancy, clinical pregnancy, foetal heart movement (FHM) and live birth. Rates of chemical pregnancy, clinical pregnancy and FHM were significantly higher in the PSL(+)/SEET(+) (57.7%, 50.0% and 46.2%, respectively) and PSL(+)/SEET(-) (53.3%, 46.7% and 46.7%, respectively) groups than in the PSL(-)/SEET(+) (30.3%, 18.2% and 18.2%, respectively) and PSL(-)/SEET(-) (22.4%, 22.4% and 18.4%;P = 0.0043, 0.0081 and 0.0055, respectively) groups. The live birth rate was significantly higher in the PSL(+)/SEET(+) group than in the PSL(+)/SEET(-), PSL(-)/SEET(+) and PSL(-)/SEET(-) groups (42.3%, 26.7%, 18.2% and 12.2%, respectively;P = 0.0237). PSL combined with SEET may be a useful adjunct to assisted reproductive technology in women who repeatedly fail to conceive by infertility treatment.展开更多
Objective To analyse factors influencing the outcome of frozen-thawed embryo transfer （FET）. Method A retrospective analysis was performed in our center on 129 thawing cycles from March 2001 to April 2003. The relat...Objective To analyse factors influencing the outcome of frozen-thawed embryo transfer （FET）. Method A retrospective analysis was performed in our center on 129 thawing cycles from March 2001 to April 2003. The related parameters were compared between conceived and non-conceived cycles. Results There were totally 129 clinical pregnancies in these transfers （pregnancy rate： 27.1%）. Frozen-thawed embryos were transferred to natural cycles and CC cycling and hormone replacement treatment had equal success. Groups of IVF and ICSI did not differ significantly in pregnancy rates （P〉0.05）. The pregnancy rates for one, two, three and four pre-embryos transfer were 0, 20.0%,44.1% and 75.0%, respectively （P〈0.05）. There were statistical differences between pregnancy group or non- pregnancy group in the endometrial thickness, CES, CES/No. of embryo. A higher pregnancy rate was observed in embryo transfers which had at least one 4-cell grade I embryo （d 2）（P〈0.01）. Conclusions The most important factors influencing the implantation rate and pregnancy rate of frozen-thawed embryo transfer are age, endometrium thickness, and the number, morphology and growth rate of transferred frozen embryos of women participants.展开更多
Background Frozen-thawed embryo transfer （FET） is the most common way to prevent serious late ovarian hyperstimulation syndrome and increase the cumulative pregnancy rate. We evaluated the effectiveness of an FET pr...Background Frozen-thawed embryo transfer （FET） is the most common way to prevent serious late ovarian hyperstimulation syndrome and increase the cumulative pregnancy rate. We evaluated the effectiveness of an FET program for improving the embryo implantation and clinical pregnancy rates, and ultimate embryo utilization rate in infertility treatment. Methods Patients undergoing in vitro fertilisation （IVF） cycles from January 2006 to June 2008 were enrolled, including 179 patients who had undergone the first FET cycle after controlled ovarian hyperstimulation （COH） in which all embryos were frozen （group C1） and 1306 patients who had COH with fresh embryo transfer （ET） （group T1）. Logistic regression was used to model the embryo implantation and clinical pregnancy rates based on the mother＇s age, numbers of oocytes retrieved, embryos transferred and high-quality embryos transferred. The embryo implantation and clinical pregnancy rates were also compared between two groups after adjusting for age, the numbers of oocytes retrieved and the numbers of embryos transferred. Results Logistic regression analysis confirmed that embryo implantation and clinical pregnancy rates in group C1 were both significantly higher than those in group T1 after adjusting for confounding factors （43.6% vs 29.0%, 63.1% vs 47.0%, respectively; P 〈0.01）. The embryo implantation and clinical pregnancy rates were consistently higher in group C1 by comparing the age groups ≥35 or 〈35 years. The clinical pregnancy rates for the numbers of oocytes retrieved per cycle being ≥15 or 〈15 were higher in group C1, as was the embryo implantation rate. These differences were statistically significant for oocyte numbers 〉15 （P 〈0.05）. The embryo implantation and clinical pregnancy rates in group C1 were both significantly higher than in group T1 when two or three embryos were transferred （P 〈0.05）. Conclusion A program of freezing all embryos and performing FET improved the rates of embryo implantation and clinical pregnancy, and ultimately enhanced the embryo utilization rate.展开更多
Objective To explore the different endometrial preparation for frozen-thawed embryo transfer （FET） in women with advanced endometriosis （EMS）. Methods The pregnancy outcomes of patients with advanced EMS （542 cyc...Objective To explore the different endometrial preparation for frozen-thawed embryo transfer （FET） in women with advanced endometriosis （EMS）. Methods The pregnancy outcomes of patients with advanced EMS （542 cycles）, who were prepared for FET, were retrospectively assessed. Included patients underwent a total of 233 FET cycles （180 patients） using natural cycle （NC）, a total of 142 FET cycles （115 patients） using letrozole （LE） ovulation induction, and a total of 167 FET cycles （137 patients） using hormonal replacement treatment （HRT） for endometrial preparation.Results There were no significant diffenences in the clinical pregnancy rate （LE： 49.30%, NC： 50.21%, and HRT： 43.11~/o, P=0.343）, the implantation rate （LE： 29.26%, NC： 36.03%, and HRT： 29.55%, P=0.084）, and the live birth rate （LE： 38.02%, NC： 39.11%, and HR T.＂ 35.33 %, P=O. 648） among the three groups. No statistically signifi- cant differences were observed in the ongoing pregnancy rate, the miscarriage rate, and the pregnancy complication rate. The single birth weight in patients using NC- FET was lower than that in patients using HRT-FET （P=0.044） and a higher twin birth weight in patients using LE-FET were observed compared with other groups （P=O. 022）. The rate of birth weight 〈2 500 g was also higher in the NC-FET group than in other groups. No congenital birth defects were found in the three groups. Conclusion Different endometrial preparation protocols without ultra-long GnRH-a down-regulation for FET yield similar pregnancy outcomes in patients with EMS. A tailored endometrial preparation protocol should be recommended according to different patients＇ situation.展开更多
Objective To compare the results of a novel regimen of human menopausal gonadotrophin （hMG） in combination with clomiphene citrate （CC） in mid-to-late follicular phase with those of a short protocol of GnRH agoni...Objective To compare the results of a novel regimen of human menopausal gonadotrophin （hMG） in combination with clomiphene citrate （CC） in mid-to-late follicular phase with those of a short protocol of GnRH agonist （GnRHa） and hMG used for IVF. Methods In the retrospective study, 842 patients undergoing IVF were collected and classified into two groups： hMG in combination with CC in mid-to-late follicular phase （group A, n=319） and short protocol of GnRHa-hMG （group B, n=523）. The main outcome measures were ovarian responses in stimulation cycles and pregnancy outcomes in subsequent frozen-thawed embryo transfer （FET） cycles. Results In group A, the serum LH concentration on day 8 -10 was similar with that on the day of hCG administration （2.43 ± 1.92 IU vs 2.51 ±2.05 IU）. The number of mature follicles and oocytes retrieved was significantly lower in group A than in group B while the fertilization rate and the cleavage rate were comparable. The clinical pregnancy rate （47. 79% vs 48.04%）, the implantation rate （32.49% vs 33.11%） and the cumulative pregnancy rate （58.09% vs 60.22%） were respectively similar in group A and group B. Conclusion hMG in combination with CC in mid-to-late follicular phase results in the same pregnancy outcome as short protocol. The novel protocol may take the advantage of eliminating the occurrehce of a premature endogenous LH Surge.展开更多
Objective： To assess embryo implantation rate （IR） and pregnancy rate （PR） in women who received Bushen Wengong Decoction （补肾温宫汤, BSWGD）, a Chinese herbal formula, combined with low dose of human menopausa...Objective： To assess embryo implantation rate （IR） and pregnancy rate （PR） in women who received Bushen Wengong Decoction （补肾温宫汤, BSWGD）, a Chinese herbal formula, combined with low dose of human menopausal gonadotropin （hMG） prior to frozen-thawed embryo transfer （FET）. Methods： A total of 262 subjects （674 transferred embryos） who received FET were analyzed retrospectively. In them, 122 women were under 30 years old, 106 between 30-35 years and 32 over 35 years. The 85 subjects with normal ovulation were assigned to Group A, the natural menstruation cycling group, on whom no pre-transfer treatment was applied. The other 177 subjects with abnormal ovulation were assigned to Group B, and subdivided, according to the pre-transfer treatment they received, into three groups, Group B1 （50 cases） received BSWGD, Group B2 （58 cases） received hMG and Group B3 （69 cases） received both BSWGD and low dose hMG. The IR and PR of FET in the four groups were compared time on PR of FET were compared also. Besides, the influencing factors and the effect of the embryo cryoto FET were analyzed. Results： IR and PR were significantly higher in all age sects of Group B3 than those in Group A, showing significant difference （ P〈0.05）. IR and PR in subjects in age sects of 〈30 years and 〉 35 years in group B3 were significantly higher than those in Group B1 （ P〈0.05）, but no significant difference was shown in the two parameters between Group B 2 and Group B3 （P〉0.05）. PR in the subjects who received embryos with cryo-time of 〉 200 days was significantly lower than that in those with cryo-time of ~ 100 days （P〈0.05）. Embryo cryo-time, endometrial thickness, use of BSWGD and use of hMG were of significance in FET （ P〈 0.05）. Conclusion： A programmed cycle of BSWGD combined with low dose of hMG could improve the embryo IR and PR of FET. Embryo cryo-time, endometrial thickness, and the use of BSWGD and hMG are of significance for FET.展开更多
To compare the efficacy of human chorionic gonadotrophin （hCG） at reduced doses of 2 000 IU and 3 000 IU for moderate or high responders with the dose of 5 000 IU in term of inducing final oocyte maturation for IV...To compare the efficacy of human chorionic gonadotrophin （hCG） at reduced doses of 2 000 IU and 3 000 IU for moderate or high responders with the dose of 5 000 IU in term of inducing final oocyte maturation for IVF/ICSI and the subsequent pregnancy outcome in frozen-thawed embryo transfer （FET）. Methods In the retrospective cohort study, 2 166patients undergoing IVF/ICSI with moderate or high response were recruited and classified into three groups according to the trigger dose of hCG： 2 000 IU （group A, n=722）, 3 000 IU （group B, n=722） and 5 000 IU （group C, n= 722）. The main outcome was the proportion of mature oocytes retrieved, fertilization rates, clinical pregnancy rates, cumulative pregnancy rates and incidence of ovarian hyperstimulation syndrome （OHSS）. Results No evidence of statistically difference was found in the proportion of mature oocytes retrieved （89.92%, 91.40%, 90.20%, respectively） and fertilization rate （79.8%, 80.07%, 80.51%, respectively） among groups A, B and C. Serum E2 level on the day of hCG injection, the number of mature oocytes retrieved and good-quality embryos in group A were significantly higher than those in group B and group C. Clinical pregnancy rates per transfer cycle （45.95%, 43.97% and 44.25%）, ongoing pregnancy rates （43.17%, 40.91% and 42,53%）, implantation rates （30, 74%, 2Z 78% and 29.86%） and cumulative pregnancy rates per patient （58.31%, 53.6% and 54.85%）A reduced hCG dose of 2 000 IUfor moderate or high responders leads展开更多
文摘The clinical outcomes of five groups of infertility patients receiving frozen- thawed, cleavage-stage embryo transfers with exogenous hormone protocols with or without a depot gonadotropin-releasing hormone （GnRH） agonist were assessed. A retrospective cohort analysis was performed on 1003 cycles undergoing frozen-thawed, cleavage-stage embryo transfers from January 1, 2012 to June 31, 2015 in the Reproductive Medicine Center of Wuhan General Hospital of Guangzhou Military Region. Based on the infertility etiologies of the patients, the 1003 cycles were divided into five groups： tubal infertility, polycystic ovary syndrome （PCOS）, endometriosis, male infertility, and unexplained infertility. The main outcome was the live birth rate. Two groups were set up based on the intervention： group A was given a GnRH agonist with exogenous estrogen and progesterone, and group B （control group） was given exogenous estrogen and progesterone only. The results showed that the baseline serum hormone levels and basic characteristics of the patients were not significantly different between groups A and B. The live birth rates in groups A and B were 41.67% and 29.29%, respectively （P〈0.05）. The live birth rates in patients with PCOS in groups A and B were 56.25% and 30.61%, respectively （P〈0.05）. The clinical pregnancy, implantation and on-going pregnancy rates showed the same trends as the live birth rates between groups A and B. The ectopic pregnancy rate was significantly lower in group A than in group B. We concluded that the live birth rate was higher and other clinical outcomes were more satisfactory with GnRH agonist co- treatment than without GnRH agonist co-treatment for frozen-thawed embryo transfer. The GnRH agonist combined with exogenous estrogen and progesterone worked for all types of infertility tested, especially for women with PCOS.
文摘The endometrial condition is a significant factor for successful pregnancy. To regulate endometrial function in fertility treatment, prednisolone (PSL) is administered for suppression of increased natural killer cells and stimulation of endometrium embryo transfer (SEET) to enhance communication between embryo and maternal tissues. We attempted to improve the endometrial condition by PSL administration and SEET during frozen–thawed blastocyst transfer (FBT). Patients took PSL (5 mg) 3 times daily for 3 days after ovulation during the FBT cycle. To analyse effects of PSL combined with SEET, we determined rates of chemical pregnancy, clinical pregnancy, foetal heart movement (FHM) and live birth. Rates of chemical pregnancy, clinical pregnancy and FHM were significantly higher in the PSL(+)/SEET(+) (57.7%, 50.0% and 46.2%, respectively) and PSL(+)/SEET(-) (53.3%, 46.7% and 46.7%, respectively) groups than in the PSL(-)/SEET(+) (30.3%, 18.2% and 18.2%, respectively) and PSL(-)/SEET(-) (22.4%, 22.4% and 18.4%;P = 0.0043, 0.0081 and 0.0055, respectively) groups. The live birth rate was significantly higher in the PSL(+)/SEET(+) group than in the PSL(+)/SEET(-), PSL(-)/SEET(+) and PSL(-)/SEET(-) groups (42.3%, 26.7%, 18.2% and 12.2%, respectively;P = 0.0237). PSL combined with SEET may be a useful adjunct to assisted reproductive technology in women who repeatedly fail to conceive by infertility treatment.
文摘Objective To analyse factors influencing the outcome of frozen-thawed embryo transfer （FET）. Method A retrospective analysis was performed in our center on 129 thawing cycles from March 2001 to April 2003. The related parameters were compared between conceived and non-conceived cycles. Results There were totally 129 clinical pregnancies in these transfers （pregnancy rate： 27.1%）. Frozen-thawed embryos were transferred to natural cycles and CC cycling and hormone replacement treatment had equal success. Groups of IVF and ICSI did not differ significantly in pregnancy rates （P〉0.05）. The pregnancy rates for one, two, three and four pre-embryos transfer were 0, 20.0%,44.1% and 75.0%, respectively （P〈0.05）. There were statistical differences between pregnancy group or non- pregnancy group in the endometrial thickness, CES, CES/No. of embryo. A higher pregnancy rate was observed in embryo transfers which had at least one 4-cell grade I embryo （d 2）（P〈0.01）. Conclusions The most important factors influencing the implantation rate and pregnancy rate of frozen-thawed embryo transfer are age, endometrium thickness, and the number, morphology and growth rate of transferred frozen embryos of women participants.
基金This study was supported by grants from National Natural Science Foundation of China （No. 30872767） and Natural Science Foundation of Zhejiang （No. Y2080158）.
文摘Background Frozen-thawed embryo transfer （FET） is the most common way to prevent serious late ovarian hyperstimulation syndrome and increase the cumulative pregnancy rate. We evaluated the effectiveness of an FET program for improving the embryo implantation and clinical pregnancy rates, and ultimate embryo utilization rate in infertility treatment. Methods Patients undergoing in vitro fertilisation （IVF） cycles from January 2006 to June 2008 were enrolled, including 179 patients who had undergone the first FET cycle after controlled ovarian hyperstimulation （COH） in which all embryos were frozen （group C1） and 1306 patients who had COH with fresh embryo transfer （ET） （group T1）. Logistic regression was used to model the embryo implantation and clinical pregnancy rates based on the mother＇s age, numbers of oocytes retrieved, embryos transferred and high-quality embryos transferred. The embryo implantation and clinical pregnancy rates were also compared between two groups after adjusting for age, the numbers of oocytes retrieved and the numbers of embryos transferred. Results Logistic regression analysis confirmed that embryo implantation and clinical pregnancy rates in group C1 were both significantly higher than those in group T1 after adjusting for confounding factors （43.6% vs 29.0%, 63.1% vs 47.0%, respectively; P 〈0.01）. The embryo implantation and clinical pregnancy rates were consistently higher in group C1 by comparing the age groups ≥35 or 〈35 years. The clinical pregnancy rates for the numbers of oocytes retrieved per cycle being ≥15 or 〈15 were higher in group C1, as was the embryo implantation rate. These differences were statistically significant for oocyte numbers 〉15 （P 〈0.05）. The embryo implantation and clinical pregnancy rates in group C1 were both significantly higher than in group T1 when two or three embryos were transferred （P 〈0.05）. Conclusion A program of freezing all embryos and performing FET improved the rates of embryo implantation and clinical pregnancy, and ultimately enhanced the embryo utilization rate.
基金supported in part by grants from the National Natural Science Foundation of China(No.81270749 and No.81470064)the Natural Science Foundation of Shanghai,China(No.15411953000,No.15411964500 and No.14ZR1423900)
文摘Objective To explore the different endometrial preparation for frozen-thawed embryo transfer （FET） in women with advanced endometriosis （EMS）. Methods The pregnancy outcomes of patients with advanced EMS （542 cycles）, who were prepared for FET, were retrospectively assessed. Included patients underwent a total of 233 FET cycles （180 patients） using natural cycle （NC）, a total of 142 FET cycles （115 patients） using letrozole （LE） ovulation induction, and a total of 167 FET cycles （137 patients） using hormonal replacement treatment （HRT） for endometrial preparation.Results There were no significant diffenences in the clinical pregnancy rate （LE： 49.30%, NC： 50.21%, and HRT： 43.11~/o, P=0.343）, the implantation rate （LE： 29.26%, NC： 36.03%, and HRT： 29.55%, P=0.084）, and the live birth rate （LE： 38.02%, NC： 39.11%, and HR T.＂ 35.33 %, P=O. 648） among the three groups. No statistically signifi- cant differences were observed in the ongoing pregnancy rate, the miscarriage rate, and the pregnancy complication rate. The single birth weight in patients using NC- FET was lower than that in patients using HRT-FET （P=0.044） and a higher twin birth weight in patients using LE-FET were observed compared with other groups （P=O. 022）. The rate of birth weight 〈2 500 g was also higher in the NC-FET group than in other groups. No congenital birth defects were found in the three groups. Conclusion Different endometrial preparation protocols without ultra-long GnRH-a down-regulation for FET yield similar pregnancy outcomes in patients with EMS. A tailored endometrial preparation protocol should be recommended according to different patients＇ situation.
基金supported by National Natural Science Foundation of China (No. 31071275, No. 81270749 and No. 31101070)
文摘Objective To compare the results of a novel regimen of human menopausal gonadotrophin （hMG） in combination with clomiphene citrate （CC） in mid-to-late follicular phase with those of a short protocol of GnRH agonist （GnRHa） and hMG used for IVF. Methods In the retrospective study, 842 patients undergoing IVF were collected and classified into two groups： hMG in combination with CC in mid-to-late follicular phase （group A, n=319） and short protocol of GnRHa-hMG （group B, n=523）. The main outcome measures were ovarian responses in stimulation cycles and pregnancy outcomes in subsequent frozen-thawed embryo transfer （FET） cycles. Results In group A, the serum LH concentration on day 8 -10 was similar with that on the day of hCG administration （2.43 ± 1.92 IU vs 2.51 ±2.05 IU）. The number of mature follicles and oocytes retrieved was significantly lower in group A than in group B while the fertilization rate and the cleavage rate were comparable. The clinical pregnancy rate （47. 79% vs 48.04%）, the implantation rate （32.49% vs 33.11%） and the cumulative pregnancy rate （58.09% vs 60.22%） were respectively similar in group A and group B. Conclusion hMG in combination with CC in mid-to-late follicular phase results in the same pregnancy outcome as short protocol. The novel protocol may take the advantage of eliminating the occurrehce of a premature endogenous LH Surge.
基金Supported by Major State Basic Research Development Program of China (973 Program, No. 2006CB504005) and the National Natural Science Foundation of China (No. 30571968)
文摘Objective： To assess embryo implantation rate （IR） and pregnancy rate （PR） in women who received Bushen Wengong Decoction （补肾温宫汤, BSWGD）, a Chinese herbal formula, combined with low dose of human menopausal gonadotropin （hMG） prior to frozen-thawed embryo transfer （FET）. Methods： A total of 262 subjects （674 transferred embryos） who received FET were analyzed retrospectively. In them, 122 women were under 30 years old, 106 between 30-35 years and 32 over 35 years. The 85 subjects with normal ovulation were assigned to Group A, the natural menstruation cycling group, on whom no pre-transfer treatment was applied. The other 177 subjects with abnormal ovulation were assigned to Group B, and subdivided, according to the pre-transfer treatment they received, into three groups, Group B1 （50 cases） received BSWGD, Group B2 （58 cases） received hMG and Group B3 （69 cases） received both BSWGD and low dose hMG. The IR and PR of FET in the four groups were compared time on PR of FET were compared also. Besides, the influencing factors and the effect of the embryo cryoto FET were analyzed. Results： IR and PR were significantly higher in all age sects of Group B3 than those in Group A, showing significant difference （ P〈0.05）. IR and PR in subjects in age sects of 〈30 years and 〉 35 years in group B3 were significantly higher than those in Group B1 （ P〈0.05）, but no significant difference was shown in the two parameters between Group B 2 and Group B3 （P〉0.05）. PR in the subjects who received embryos with cryo-time of 〉 200 days was significantly lower than that in those with cryo-time of ~ 100 days （P〈0.05）. Embryo cryo-time, endometrial thickness, use of BSWGD and use of hMG were of significance in FET （ P〈 0.05）. Conclusion： A programmed cycle of BSWGD combined with low dose of hMG could improve the embryo IR and PR of FET. Embryo cryo-time, endometrial thickness, and the use of BSWGD and hMG are of significance for FET.
基金supported by National Natural Science Foundation of China(No.31071275)Natural Science Foundation of Shanghai of China(No.09411962900)
文摘To compare the efficacy of human chorionic gonadotrophin （hCG） at reduced doses of 2 000 IU and 3 000 IU for moderate or high responders with the dose of 5 000 IU in term of inducing final oocyte maturation for IVF/ICSI and the subsequent pregnancy outcome in frozen-thawed embryo transfer （FET）. Methods In the retrospective cohort study, 2 166patients undergoing IVF/ICSI with moderate or high response were recruited and classified into three groups according to the trigger dose of hCG： 2 000 IU （group A, n=722）, 3 000 IU （group B, n=722） and 5 000 IU （group C, n= 722）. The main outcome was the proportion of mature oocytes retrieved, fertilization rates, clinical pregnancy rates, cumulative pregnancy rates and incidence of ovarian hyperstimulation syndrome （OHSS）. Results No evidence of statistically difference was found in the proportion of mature oocytes retrieved （89.92%, 91.40%, 90.20%, respectively） and fertilization rate （79.8%, 80.07%, 80.51%, respectively） among groups A, B and C. Serum E2 level on the day of hCG injection, the number of mature oocytes retrieved and good-quality embryos in group A were significantly higher than those in group B and group C. Clinical pregnancy rates per transfer cycle （45.95%, 43.97% and 44.25%）, ongoing pregnancy rates （43.17%, 40.91% and 42,53%）, implantation rates （30, 74%, 2Z 78% and 29.86%） and cumulative pregnancy rates per patient （58.31%, 53.6% and 54.85%）A reduced hCG dose of 2 000 IUfor moderate or high responders leads
