胎心率曲线中短变异对围生儿结局的影响

Influence of short term variation in infant heart rate monitoring curve on perinatal infants

目的探讨胎心率监护中短变异（STV）与分娩结局的相关性。方法本院住院分娩孕妇常规进行无负荷试验（NST）的同时，应用牛津公司8002专家系统进行分析，选择短变异〈5．0ms的孕妇256例，并分为STV≤2．9ms组10例、STV3．0～3．9ms组86例和STV4．0～4．9ms组160例；随机选择同期STV≥5．0ms160例作为对照，并对不同STV组与围生儿预后不良和NST异常的分布情况及STV与胎儿附属物异常的关系进行分析和研究。结果STV3．0～3．9ms组和≤2．9ms组的NST异常、围生儿预后不良及胎儿附属物异常明显高于STV4．0～4．9ms组与STV≥5．0ms组（P〈0．05）。结论STV长度与胎儿宫内缺氧等围生儿预后不良和胎儿附属物异常有较好的相关性，它可成为衡量胎心率变异的一个新指标，提高了胎心率曲线判读的准确性。

Objective To study the relationship between Short Term Variation （STV） in fetal heart rate monitoring curve and pregnancy outcome. Methods All pregnancy patients received non stress test （NST） and underwent analysis using Oxford 8002 expert system. 256 patients with STV 〈 5.0 ms were chosen and were divided into 3 groups： STV ≤ 2.9 ms group, 3.0 〈 STV 〈 3.9 ms group and 4.0〈 STV 〈 4.9 ms group. 160 cases with STV above 5.0 ms was used as control.We compared the rate of bad infant prognosis, aberrant NST and infant accessories between these groups. Results The rate of bad infant prognosis, aberrant NST and infant accessories in STV ≤ 2.9 ms group, 3.0 〈 STV 〈 3.9 ms group were lower than that in 4.0 〈 STV 〈 4.9ms group and the control group. Conclusion The length of STV is well correlated with the rate of bad infant prognosis, aberrant NST and infant accessories and can be an index to measure aberrant heart rate,which will improve the accuracy of heart rate curve monitoring.