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妊娠中期抽取羊水作产前遗传学检查是现代临床产科实践的一种公认方法。随着超声波的常规应用,提高了双胎在妊娠中期的诊断率有关。双胎妊娠羊水穿刺并发症的发病率报告不一,有的报告可在穿刺时穿透两个胎囊,亦有报道流产及死亡率增高。作者报道了洛杉机加利福尼亚大学在1977年1月1日至1983年7月30日期间对53例双胎孕妇作了产前遗传学检查。52例孕妇运用超声波诊断为双胎,其中48例活胎的孕妇在妊娠中期作了双侧羊膜腔穿刺。穿刺在超声监测下进行,第一胎囊抽出羊水后注入稀释的靛蓝卡红作为标志,以便与第二胎囊穿刺鉴别。所有Rh阴性的孕妇在穿刺后几小时
The extraction of amniotic fluid during the second trimester for prenatal genetic testing is a well-established method of modern clinical obstetric practice. With the routine use of ultrasound, increased twin pregnancy rate in the second trimester of diagnosis. The prevalence of amniocentesis in twin pregnancies has been reported in varying degrees, with some reports of penetrating two fetal sacs during puncture and the reported increased abortion and mortality. The authors reported that the University of California, Los Angeles, conducted a prenatal genetic study of 53 pregnant women with twin pregnancies between January 1, 1977, and July 30, 52 cases of pregnant women using ultrasound diagnosis of twins, of which 48 cases of pregnant women with live births in the second trimester of pregnancy made by bilateral amniocentesis. Puncture is performed under ultrasound monitoring. The amniotic fluid is withdrawn from the first balloon and diluted indigo card red is injected as a marker for differentiation from the second balloon. All Rh-negative pregnant women hours after piercing