摘要:
目的 探讨卵巢过度刺激综合征(OHSS)高危患者在取卵后应用来曲唑能否降低早发型OHSS的发生率.方法 选择2012年6月至2013年12月就诊于河南省人民医院OHSS高危且行全胚胎冷冻的176例不孕症患者,随机分为两组,实验组(86例)自取卵日起连续5d口服来曲唑5 mg/d,对照组(90例)予以安慰剂口服.检测两组患者hCG注射日及其后第5、8、10天血清生殖激素(FSH、LH、雌二醇、孕酮)和血管内皮生长因子(VEGF)水平,同时观察两组患者中、重度早发型OHSS的发生率.结果 在hCG注射后第5、8、10天,实验组患者血清雌二醇水平分别为(5 727±2 089)、(1 613±879)、(193±90) pmol/L,对照组分别为(11 826±4 281)、(7 925±3 507)、(1 628±888)pmol/L;实验组VEGF水平分别为(80±14)、(66±11)、(48±7) ng/L,对照组分别为(108±19)、(126±14)、(148±14) ng/L;实验组均明显低于对照组,两组分别比较,差异均有统计学意义(P<0.01).在hCG注射后第8、10天,实验组患者血清FSH水平分别为(2.1±1.1)和(3.5±1.3) U/L,对照组分别为(0.7±0.3)和(0.7±0.4) U/L;实验组血清LH水平分别为(0.26±0.19)和(0.72±0.60) U/L,对照组分别为(0.11±0.03)和(0.14±0.08) U/L;实验组均高于对照组,两组分别比较,差异均有统计学意义(P<0.05).实验组中、重度早发型OHSS发生率[2%(2/86)]明显低于对照组[12%(11/90)],两组比较,差异有统计学意义(P<0.05).结论 对于OHSS高危需行全胚胎冷冻的患者,取卵后在黄体早期连续5d口服来曲唑(5 mg/d),可以降低血清雌二醇和VEGF水平,有助于降低早发型OHSS发生率.%Objective To investigate the effect of letrozole in decreasing the early-stage ovarian hyperstimulation syndrome (OHSS) occurrence during the luteal phase for patients of OHSS high-risk after oocyte retrieval.Methods A total of 176 high-risk OHSS patients were randomly divided into two groups after oocyte retrieval.Patients in experiment group (n=86) received 5 mg letrozole per day from the retrieval day and last for 5 days.Others in control group (n=90) received placebo.The serum concentration of FSH,LH,estradiol (E2),progesterone (P) and vascular endothelial growth factor (VEGF) from the day of hCG injection to days after injection (5 days,8 days,10 days) were measured.And the incidence of moderate and severe OHSS was observed.Results The concentration of E2 on the indicated days (5 days,8 days,10 days after hCG injection) in experiment group and control group were (5 727±2 089) versus (11 826±4 281) pmol/L,(1 613±879) versus (7 925±3 507) pmol/L,(193±90) versus (1 628±888) pmol/L; the concentration of VEGF on the indicated days in the two groups were (80± 14) versus (108± 19) ng/L,(66± 11) versus (126± 14) ng/L,(48±7) versus (148± 14) ng/L; the concentration of E2 and VEGF were lower than those in control group (all P<0.01).The FSH concentration in experiment group were (2.1 ± 1.1) and (3.5± 1.3) U/L on the day of fifth and eighth day after hCG injection,which were significantly higher than (0.7±0.3) and (0.7±0.4) U/L in control group (P<0.05); the LH concentration in experiment group were (0.26±0.19) and (0.72±0.60) U/L on the day of fifth and eighth day after hCG injection,which were significantly higher than (0.11 ±0.03) and (0.14±0.08) U/L in control group (P<0.05).The incidence of moderate and severe OHSS was signicantly decreased after letrozole treatment compared with control group [2% (2/86) versus 12% (1 1/90),P<0.05].Conclusion Administration of 5 mg/d letrozole for 5 days during the luteal phase can reduce the E2 and VEGF levels for the high-risk OHSS patients who needed cryopreserve all embryos,and also reduce the occurrence of early OHSS.