| Objective To study the analgesic effect of transcutaneous acupoint electrical stimulation(TEAS) on labor analgesia and the influence of neonatal umbilical artery and venous blood gas and lactic acid. Methods In this study, 80 parturients who met the inclusion criteria were collected and randomly divided into the electric stimulation group and the control group with 40 cases each The two groups were accompanied by the professional personnel to Doula at the beginning of labor, using the acupuncture electric stimulator for the electric stimulation group of maternal bilateral Hegu, Sanyin-jiao and Jiaji(L3、L5 points), keep electrical stimulation, until the fetal childbirth.The control group, no other analgesic intervention was given except Doula. VAS scores of the two groups were recorded respectively before analgesia or Doula(T0), 30 minutes after analgesia or Doula(T1), 1 hour after analgesia or Doula(T2),and after cervix opened(T3), and after fetal delivery(T4) to evaluate analgesic effect. After delivery,1.5 ml samples of umbilical artery and venous blood were taken from the two groups for blood gas analysis, and Apgar scores at 1min, 5min and 10min were recorded. VAS score,blood gas analysis and Apgar score were collected for statistical comparison. Results Case collection results: 2 cases of low-weight infants were lost in the control group, and a total of 78 cases of eligible mothers were collected in the end, including 40 cases in the electrical stimulation group and 38 cases in the control group. In the electrical stimulation group, the VAS score at T1,T2 was lower than T0( ), there was no statistically significant difference between T3 and T0 ( ) , and at T4 was lower than T0 ( ).In the control group, there was no statistically significant difference between T1, T2 and T0 ( ) about the VAS score, and VAS score at T3 was higher than T0 ( )，and the score at T4 was lower than T0 ( ). Comparison between the electrical stimulation group and the control group: there was no statistically significant difference in VAS score at T0 between the two groups ( ), and the VAS score at T1, T2, T3 and T4 in the electrical stimulation group was lower than the control group ( ). Comparison of analgesic efficiency: the electric stimulation group was higher than the control group ( ). Results of arteriovenous blood gas:the pH, BE and PO2 of umbilical artery and venous blood in the electrical stimulation group were higher than those in the control group ( ), and the Lac was lower than that in the control group ( ).There was no statistically significant difference in PCO2 between the two groups( ).The difference of umbilical artery and venous blood pH, BE, PO2, PCO2 and Lac（Δ=A-V）in electrical stimulation group was no statistically significant difference compared with control group ( ). Apgar score results: there was no significant difference between the electrical stimulation group and the control group in Apgar score at 1, 5 and 10 minutes after birth ( ). Conclusion TEAS is an effective analgesic treatment in labor analgesia, which can improve blood gas in umbilical artery and venous, reduce lactic acid accumulation, and contributes to reducing the occurrence of neonatal acidosis and asphyxia. |
