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| Predictive value of fetal electrocardiogram analysis of the pregnant women with pregnancy-induced hypertension for their fetal intrauterine hypoxia |
| Guanghan People's Hospital, Guanghan, Sichuan Province, 618300 |
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Abstract To explore the predictive value of the fetal electrocardiogram (FECG) analysis of the pregnant women with pregnancy-induced hypertension (PIH) for their fetal intrauterine hypoxia. Methods: A total of 137 pregnant women with PIH between January 2019 and January 2021 were collected retrospectively. According to the Apgar scores of the neonates at 1min after born, these women were divided into group A (women with fetal intrauterine hypoxia) and group B (women without fetal intrauterine hypoxia). The abnormal detection rates of the electrocardiogram and FECG of the women were compared between the two groups. The values of the electrocardiogram and the FECG of the women with PIH for predicting their fetal intrauterine hypoxia were analyzed by receiver operating characteristic (ROC) curve. Results: In 137 women with PIH, there were 24 women with fetal intrauterine hypoxia. The 1min Apgar score (6.0±1.0 points) of the neonates in group A was significantly lower than that (9.5±2.0 points) of the neonates in group B. The incidences of the sinus bradycardia and the ST-T segment changes in electrocardiography of the neonates in group A were significantly higher than those of the neonates in group B. The total abnormal rate of electrocardiogram (45.8%) of the women in group A was significantly higher than that (10.6%) of the women in group B. The incidences of the abnormal FST segment deviation, the abnormal heart rate, and the insufficient fluctuation amplitude of the fetal heart rate in FECG of the fetuses in group A were significantly higher than those of the fetuses in group B, and the total abnormal rate (54.2%) of the FECG results of the fetuses in group A was significantly higher than that (14.2%) of the fetuses in group B (all P＜0.05). ROC analysis showed that the area under the curve (AUC) of the electrocardiogram examination of the pregnant women and the FECG examination for predicting their fetal hypoxia were 0.676 and 0.700. The AUC and the specificity of the combined electrocardiogram examination of the pregnant women and the FECG examination for predicting the fetal hypoxia were 0.859 and 83.3%, and both of which were significantly higher than those of the electrocardiogram examination of the pregnant women or the FECG examination alone (P＜0.05). Conclusion: The abnormal rates of the electrocardiogram and the FECG of the pregnant women with PIH and intrauterine hypoxia are higher than those of the pregnant women with PIH but without intrauterine hypoxia. The combined electrocardiogram examination and FECG examination of the pregnant women has higher predictive value for their fetal intrauterine hypoxia.
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