Bekedam D J, Visser G H, Mulder E J, Poelmann-Weesjes G
Am J Obstet Gynecol. 1987 Jul;157(1):126-33. doi: 10.1016/s0002-9378(87)80362-9.
In 37 intrauterine growth-retarded fetuses, combined 1-hour recordings of fetal heart rate and body movements were made within 24 hours of elective cesarean section. Fetal body movements were recorded simultaneously by use of real-time ultrasound. The study group was divided into two subgroups, according to the presence (n = 29) or absence (n = 8) of antepartum late heart rate decelerations. Correlations were made with umbilical blood gas values obtained immediately after cesarean section. Baseline heart rate variation was reduced below the normal range in 88% of the intrauterine growth-retarded fetuses with decelerations but in only 37% of the group without decelerations. A reduction in fetal heart rate accelerations and body movements and an increase in mean heart rate also were observed only in the group with decelerations. Late heart rate decelerations were associated with low PO2 values in both umbilical artery and vein. It is concluded that in intrauterine growth-retarded fetuses reduced heart rate variation and movement incidence correlate with the presence of late heart rate decelerations before birth and with hypoxemia at birth.
在37例宫内生长受限胎儿中，于择期剖宫产术前24小时内对胎儿心率和身体活动进行了1小时的联合记录。使用实时超声同时记录胎儿身体活动。根据产前晚期心率减速的有无，将研究组分为两个亚组，有减速的29例，无减速的8例。将这些数据与剖宫产术后立即获得的脐血气值进行相关性分析。在有减速的宫内生长受限胎儿中，88%的胎儿基线心率变异性降低至正常范围以下，而在无减速的胎儿组中这一比例仅为37%。仅在有减速的胎儿组中观察到胎儿心率加速和身体活动减少，以及平均心率增加。晚期心率减速与脐动脉和脐静脉中的低氧分压值相关。得出的结论是，在宫内生长受限胎儿中，心率变异性降低和活动发生率与出生前晚期心率减速的存在以及出生时的低氧血症相关。
