ABSTRACT
AIM: To explore the correlation between neonatal retinal hemorrhage(RH)and changes in umbilical artery blood gas analysis.METHODS: A total of 312 full-term neonates born in our obstetrics department from January 2019 to December 2021 were selected as the study subjects. According to the RetCam III fundus examination results, 245 neonates who did not experience RH were included in the control group, while 67 cases with RH were found to be included in the RH group. In addition, neonates were grouped into I degree group(n=20), II degree group(n=29), and III degree group(n=18)based on the degree of RH. General clinical data and umbilical artery blood gas analysis indicators between the RH group and the control group were compared; the levels of umbilical artery blood gas analysis indicators in neonates with different degrees of RH, the relationship between pH and RH degree, and the influencing factors of neonatal RH were analyzed.RESULTS: There was no obvious difference in maternal age, average gestational week, fetal gender, parity, gestational diabetes, fetal birth weight, and amniotic fluid between the RH group and the control group(all P>0.05), while there were obvious differences in delivery methods, gestational hypertension, forceps assisted delivery, neonatal asphyxia, and umbilical cord around the neck(all P<0.05). The pH value, arterial blood sample partial pressure(PaO2)and base excess(BE)values of the RH group were obviously lower than those of the control group(all P<0.01), while the arterial carbon dioxide partial pressure(PaCO2)was obviously higher than that of the control group(P<0.01). There were obvious differences in umbilical artery blood gas analysis indicators among children with different degrees of RH(P<0.05), and with the increase of the degree of RH, pH value, PaO2 and BE gradually decreased(P<0.05), and PaCO2 gradually increased(P<0.05). There was a negative correlation between the degree of RH and the pH of umbilical artery blood gas analysis(rs=-0.593, P<0.05). The results of multivariate Logistic regression analysis showed that delivery method, gestational hypertension, forceps assisted delivery, neonatal asphyxia, umbilical cord entanglement, pH, PaO2, PaCO2, and BE were all influencing factors for the occurrence of neonatal RH.CONCLUSION: There is a close correlation between neonatal RH and changes in umbilical artery blood gas analysis, and umbilical artery blood gas analysis can be used for the diagnosis of neonatal RH, which can be used to guide clinical treatment.
ABSTRACT
OBJECTIVE: The purpose of this study was to compare the umbilical artery blood gas analysis and assess the relationship between fetal oxygenation and placenta to birth weight ratios in preeclampsia and small for gestational age. METHODS: We compared the results of umbilical artery blood gas analysis and placenta to birth weight ratio in group of preeclampsia (N=28), group of small for gestational age (N=15), group of large for gestational age (N=15), and controls (N=24). And we also divided all of them into 3 groups by placenta to birth weight ratio at birth, 0.25 (N=18). We compared umbilical artery gas analysis in each groups. RESULTS: The placenta to birth weight ratio in PE was significantly lower than control group (p<0.05). Umbilical artery pO2 and O2 saturations in each group of preeclampsia and small for gestational age were significantly lower than group of large for gestational age and controls (p<0.05). But we could not find any differences in other umbilical artery blood gas analysis (pH, pCO2, HCO3-). Umbilical artery pO2 and O2 saturations of higher placenta to birth weight ratio were stepwise lower than those of lower placenta to birth weight ratio but, pCO2 of higher placenta to birth weight ratio was stepwise lower than those of lower placenta to birth weight ratio. But there was no significant difference. CONCLUSION: Our data suggested that fetal oxygenation is significant determinant of fetal growth from small for gestational age and preeclampsia. And it may be related to placental implantaton and growth.