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Abstract To investigate the influence of epidural block analgesia by drug continuity or intermittent infusion on the motor function and delivery outcomes of pregnant women. Methods: 60 pregnant women with epidural analgesia during the period of delivery were selected and were divided into group A and B from January to September 2018. 30 women in group A were given epidural block analgesia by drug continuity infusion，and 30 women in group B were given epidural block analgesia by drug intermittent infusion. The dosage of anesthetic drugs, the number of PCEA used, and analgesic effect at different time point, the rate of motor nerve block, delivery outcomes, and the rate of related adverse reaction of women in the two groups were recorded. Results: The dosage of ropivacaine combined with sufentanil used, the number of PCEA used, the rate of motor nerve block in 3h, 5h, and 7h after analgesia, and the rate of delivery by instrument assisted or cesarean section were significant lower than those of women in group A (P<0.05). There was no significant difference in the VAS score in 30min, 1h, 3h, 5h,and 7h after analgesia of women between the two groups (P>0.05). The adverse reaction rate (16.7%) of women in group B had no significant different to that (23.3%) of women in group A (P>0.05), which means that the safety of women in both groups was better. Conclusion: Epidural block analgesia by drug intermittent infusion can reduce the dosage of anesthetic, and the analgesia effect is similar to that by drug continuous infusion, which can reduce the occurrence of maternal motor nerve block and relieve maternal pain, and can help the vaginal delivery smoothly.
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