Dawes G S, Houghton C R, Redman C W
Br J Obstet Gynaecol. 1982 Apr;89(4):270-5. doi: 10.1111/j.1471-0528.1982.tb04695.x.
Large variations in the pattern of normal fetal heart-rate traces near term are described. The presence of flat or bimodal frequency distributions of pulse intervals in these traces complicates the derivation of a baseline by statistical methods. A system is described for deriving an appropriate baseline from which accelerations or decelerations may be measured.
本文描述了足月时正常胎儿心率轨迹模式的巨大差异。这些轨迹中脉冲间期的平坦或双峰频率分布使得通过统计方法推导基线变得复杂。本文介绍了一种用于推导合适基线的系统，据此可测量加速或减速情况。
