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将NST基线变异异常的306例病例与同期NST基线变异正常的1003例病例进行对比分析。胎龄均>35周,孕妇均在检查后1～5天内结束分娩。将NST按反应型、无反应型、可疑的胎心率基线变异异常、胎心率基线变异正常分别与羊水污染,新生儿Apgar评分及围产儿预后进行比较。结果,胎心率基线变化异常的病例NST的无反应型,可疑明显高于胎心率基线变异正常的病例。胎心率基线变异异常的病例无论是羊水污染率还是低Apgar评分及围产儿的死亡率均高于胎心率基线变异正常的病例。胎心率基线变异正常的病例中无围产儿死亡。由此得出:胎心率基线变异正常与胎心率基线变异异常之间,存在着明显的胎儿宫内窘迫的临床意义。对NST反应型合并胎心率基线变异异常的病例要引起注意,更要重视NST无反应型或可疑的胎心率基线变异异常的病例。
306 patients with abnormal baseline NST mutation were compared with 1003 normal patients with normal baseline NST mutation. Gestational age were> 35 weeks, pregnant women are in check after 1 to 5 days to end childbirth. NST by reactive, non-responsive, suspicious baseline abnormalities of fetal heart rate abnormalities, baseline normal fetal heart rate variability were amniotic fluid contamination, neonatal Apgar score and perinatal prognosis were compared. As a result, non-responsive and suspicious cases of NST with abnormal baseline changes in fetal heart rate were significantly higher than those with normal baseline changes in fetal heart rate. Abnormal fetus heart rate baseline variability either amniotic fluid contamination or low Apgar score and perinatal mortality were higher than the normal fetal heart rate variability cases. No fetal death occurred in normal baseline fetal heart rate variability. It is concluded that there is a significant clinical significance of fetal distress between normal baseline fetal heart rate variability and abnormal baseline fetal heart rate variability. Attention should be paid to the cases of abnormal baseline variation of fetal heart rate combined with NST response, and more attention should be paid to the cases of non-responsive or suspicious baseline abnormal fetal heart rate variation.