Impact Of Water Analgesia On The Pain Relief For Primiparas In Labor

Objective: To explore the effect of water analgesia on the pain relief for primiparas in labor, especially on the point of acutest pain and total time of severe pains by tracking and comparing with remifentanil patient-controlled intravenous analgesia and the conventional vaginal delivery.Method: From September 2014 to January 2015, 139 singleton and full-term primiparas who chose analgesia labor were selected from our hospital(Wuxi Maternal and Child Health Hospital). There were 3 groups: 56 cases in water analgesia group(hereinafter referred to shortly as water group), 37 cases in remifentanil patient-controlled intravenous analgesia group(hereinafter referred to shortly as vein group) and 46 cases in traditional vaginal delivery group(hereinafter referred to shortly as traditional group). In addition,labor pain intensity was assessed with numerical rating scale(NRS). All groups were evaluated by NRS score in five different time points during the delivery:①cervical dilation to 2-3cm or 1 minute before labor analgesia ②labor analgesia after 10 minutes ③labor analgesia after 30 minutes ④labor analgesia after 60 minutes ⑤point of acutest pain.Meanwhile, total time of severe pains, labor progress, oxytocin useage, delivery mode,postpartum hemorrhage and neonatal asphyxia were all observed.Results:⑴ Compared with the traditional group, the NRS score of water group obviously declined,which showed significant difference(p<0.01). Compared with the vein group, the NRS score of water group at 10 minutes after labor analgesia was below the vein group(p<0.05).But the score of water group was higher than intravenous analgesia after 60 minutes, which showed significant difference(p<0.01).⑵ The NRS score of point of acutest pain in water group was lower than that in traditional group(p<0.01). And it was also lower than that in vein group(p<0.05).⑶ The total time of severe pain of water group was significantly shorter than the traditional group’s, which showed significant difference(p<0.01). Compared with vein group, there was no difference(p>0.05).⑷ Comparing the primiparas in the three groups, there was no difference(p>0.05) in total labor, the first stage of labor, postpartum bleeding(2h after labor), mode of delivery or neonatal Apgar score.⑸ The cases of oxytocin application in water group was significantly less than the cases in vein group, there were significant differences(p<0.05).Conclusion: Water analgesia effectively alleviates the maternal pain, especially lowing the NRS score of point of acutest pain and shorting the total time of severe pain without increasing the adverse effect and intrapartum intervention during the labor. It is a safe and effective analgesia method.