Chung Karine, Sammel Mary, Zhou Lan, Hummel Amy, Guo Weshang, Barnhart Kurt
Penn Fertility Care, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
Fertil Steril. 2006 Feb;85(2):508-10. doi: 10.1016/j.fertnstert.2005.08.012.
Because lower initial hCG concentrations are associated with slower rates of decline in spontaneous abortions, the aim of this study was to provide a detailed description of the expected rates of hCG decline in patients presenting with very low initial hCG levels and who ultimately were confirmed to have spontaneous abortions. When initial levels lie between 50 and 500 mIU/mL, the slowest expected percentage decline ranges from 12% to 24% in 2 days and from 34% to 68% in 7 days.
由于较低的初始人绒毛膜促性腺激素（hCG）浓度与自然流产时hCG下降速度较慢有关，本研究的目的是详细描述初始hCG水平极低且最终确诊为自然流产患者的hCG预期下降率。当初始水平在50至500 mIU/mL之间时，预计最慢的百分比下降在2天内为12%至24%，在7天内为34%至68%。
