Abstract：【Objective】To compare the effects of two different ways of drug administrations in labor analgesia for primiparas during the second stage of labor time .【Methods】A total of 32 cases of primiparas who required painless childbirth were divided according to the random number table method into an experimental group and a control group, with 16 cases in each group. Primiparas in the experimental group were given anesthesia according to a high added dosage with low background dosage method also known as the 8-2-20-8 administration method: In the first dosage, patients were given 8 ml of a mixture of ropivacaine and fentanyl. The background dose was 2ml/h mixture. Every 20 minutes, an additional 8ml of the mixture was rapidly injected. Meanwhille, in the control group, primiparas were given anesthesia according to a low added dosage and high background dosage method also known as the 8-6-20-3 administration method: The ropivacaine and fentanyl mixture was given at a first dosage of 8ml. The background dosage was 6ml/h mixture. Every 20 minutes, an additional 3ml of the mixture was rapidly injected. VAS scores before labor analgesia and during the second stage of labor of the two groups of primiparas were evaluated, and the length of the second stage of labor was recorded. The lactate value of every infant was determined. 【Results】The VAS scores of the two groups before labor analgesia and during the second stage and the lactate values of the infants showed no difference (P>0.05). The length of the second stage of labor in the experimental group was significantly shorter than that in the control group (P<0.05).【Conclusion】Compared to the high dosage of background and low additional dosage method of drug delivery, the low background dosage and high additional dosage method can shorten the length of the second stage of labor. It also has no obvious adverse reactions in babies. So, it is suitable as the method of delivery of labor analgesia for primiparas.
易理生;李利平. 不同给药方式下的分娩镇痛对初产妇第二产程的影响[J]. 医学临床研究, 2016, 33(12): 2349-2352.
YI Li-sheng, LI Li-ping. Effects of Different Methods of Labor Analgesic Administration on Primiparas in the Second Stage of Labor. JOURNAL OF CLINICAL RESEARCH, 2016, 33(12): 2349-2352.
2016, Vol. 33 
