Guidetti D A, Divon M Y, Langer O
Department of Obstetrics and Gynecology, Albert Einstein College of Medicine, Yeshiva University, Bronx, NY 10461.
Am J Obstet Gynecol. 1989 Jul;161(1):91-3. doi: 10.1016/0002-9378(89)90240-8.
During an 18-month period, 293 patients had a nonstress test and ultrasonographic evaluation of amniotic fluid volume twice weekly beginning at 41 weeks' gestation. Patients were admitted for induction of labor for either an abnormal nonstress test result or oligohydramnios. A control population consisted of 59 low-risk patients who were delivered between 39 and 41 weeks' gestation and had antepartum testing within 4 days of delivery. Study patients who were delivered between 41 and 42 weeks' gestation had a significantly increased incidence of abnormal nonstress tests, oligohydramnios, cesarean sections for fetal distress, and admissions to the neonatal intensive care unit compared with control patients. The abnormal fetal testing and adverse perinatal outcome associated with pregnancies over 42 weeks were also found in pregnancies between 41 and 42 weeks' gestation. These data support the concept that postdate fetal testing should begin at 41 weeks of gestation.
在18个月的时间里，293例患者从妊娠41周开始每周进行两次无应激试验和羊水体积超声评估。患者因无应激试验结果异常或羊水过少而入院引产。对照组由59例低风险患者组成，这些患者在妊娠39至41周之间分娩，且在分娩前4天内进行了产前检查。与对照组患者相比，在妊娠41至42周之间分娩的研究患者无应激试验异常、羊水过少、因胎儿窘迫行剖宫产以及入住新生儿重症监护病房的发生率显著增加。在妊娠41至42周之间的妊娠中也发现了与42周以上妊娠相关的异常胎儿检测和不良围产期结局。这些数据支持过期胎儿检测应从妊娠41周开始的概念。
