Malik Neeru, Raghunandan Chitra, Madan Neelu
Department of Obstetrics and Gynaecology, Lady Hardinge Medical College and Smt Sucheta Kriplani Hospital, New Delhi 110001.
J Indian Med Assoc. 2002 Nov;100(11):646, 648, 650-1.
The present prospective study included 173 randomly selected primigravidae at admission in early labour. Of these, 88 cases were of low risk and 85 cases were of high risk, on the basis of antenatal risk factors. All the cases were subjected to a twenty minutes recording of the foetal heart rate patterns and uterine contractions in early labour. It was interesting to note that, 13% of so called low risk pregnancies showed abnormal foetal heart pattern and thus became high risk in labour. No statistically significant difference was seen in the baseline heart rate and variability patterns in low and high risk pregnancies. However, all types of decelerations were more frequent in the high risk pregnancies. It was observed that as compared to baseline heart rate and variability, decelerations were better predictors of a poor perinatal outcome especially late decelerations and variable decelerations with ominous features, the mean Apgar scores at one minute of the two being 5.6 and 6.8 respectively.
本前瞻性研究纳入了173例在产程早期入院时随机选取的初产妇。其中，根据产前危险因素，88例为低风险，85例为高风险。所有病例均在产程早期进行了20分钟的胎儿心率模式和子宫收缩记录。值得注意的是，13%的所谓低风险妊娠显示胎儿心脏模式异常，因此在分娩时成为高风险。低风险和高风险妊娠的基线心率和变异性模式未见统计学显著差异。然而，所有类型的减速在高风险妊娠中更为频繁。观察发现，与基线心率和变异性相比，减速尤其是伴有不祥特征的晚期减速和变异减速是围产期不良结局的更好预测指标，二者出生后1分钟的平均阿氏评分分别为5.6和6.8。
