Triolo O, Stella N C, Dugo C, Corrado F
Istituto di Ginecologia, Università degli Studi di Messina.
Minerva Ginecol. 1990 Sep;42(9):345-6.
A retrospective analysis of pregnancy outcome after demonstration of a live fetus in the first trimester was carried out in 387 patients to establish a background loss rate and evaluate the safety of chorionic villus sampling. The present study proves an increased risk of spontaneous abortion with increasing maternal age, and a miscarriage rate (9.81%) higher than chorionic biopsy (4.4), probably because the therapeutic abortions and the sonograms were performed after bleeding.
对387例孕早期显示有活胎的患者的妊娠结局进行了回顾性分析，以确定背景丢失率并评估绒毛取样的安全性。本研究证明，随着母亲年龄的增加，自然流产风险增加，流产率（9.81%）高于绒毛活检（4.4%），这可能是因为治疗性流产和超声检查是在出血后进行的。
