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| Effects of Pentazocine Combined with Lidocaine on Maternal and Infants during Episiotomy with Pudendal Block |
| Qingdao Municipal Hospital， Qingdao 266011， China |
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Abstract Objective： To observe the effects of lidocaine combined with pentazocine on maternal and umbilical cord blood gas analysis during episiotomy with pudendal block. Method： The 180 puerperas were all primiparas， single birth， term pregnancy， without complication of pregnancy. Their umbilical blood stream tests were normal before delivery.Fetal heart monitorings were normal before and during delivery. They were divided into Lidocaine group（ L group） and Lidocaine combined with pentazocine group（ PL group） randomly. Each group included 90 cases. Lidocaine（ 0.5%，10 mL） was used in L group. Pentazocine（ 30 mg） combined with Lidocaine（ 0.5%， 10 mL） was used in PL group. After pudendal block， the patients’ vital signs， the onset and druation time of anesthesia were monitored. The analgesic effects were evaluated by visual analogue scale（ VAS）. Before the first breath of newborn， umbilical cord blood（1 mL） was tested for blood gas analysis. The figure of pH， PaO2，PaCO2， HCO3- and adverse reactions were recorded and compared. Result： The onset time of anesthesia in group PL were lower than group L， block was significantly longer than that in group L（P<0.05）. Similarly， the duration time of analgesia was prolonged，the figure of VAS during uterine contraction in PL group was lower than that in L group（ P<0.01）. While umbilical cord blood gas analysis had no significant difference respectively between the two groups. Conclusion： Lidocaine lidocaine combined with Pentazocine during episiotomy with pudendal block prolonged the druation time of sensory nerve block and anesthesia. The effects of anesthesia are improved obviously. But the umbilical cord blood gas analysis is not affected. The adverse reactions are reduced. So， pentazocine combined with lidocaine could be applied during delivery safely.
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