Abstract:
Objective: To explore the effects of lidocaine surface anesthesia on postoperative analgesia and stress reactions of children receiving tonsillectomy.
Methods: A total of 86 cases of children receiving tonsillectomy in our hospital from September 2012 to May 2014 were selected as the research subjects, who were divided into observation group and control group according to the random number table method, with 43 cases in each group. On the basis of routine anesthesia, the control group was given normal saline wound spray, and the observation group was given lidocaine surface anesthesia. The blood pressure(BP), heart rate(HR), respiration(RR), arterial oxygen saturation(SaO2) and pain scores of children in the two groups after drug spraying, immediately after waking, after 10 min, 30 min and 60 min of waking, were observed and recorded, and the stress reactions were analyzed by observing the adrenal cortical hormone(ACTH), interleukin-6(IL-6) and cortisol(COR) levels in the two groups before and after operation.
Results: There were no significant differences in the levels of BP,HR,RR,SaO2 and pain scores between the two groups after drug spraying and after 60 min of waking(P>0.05),but observation group was significantly lower than the control group in those indexes immediately after waking, after 10 min, and 30 min of waking(P<0.05).There were no significant differences in the levels of ACTH, IL-6 or COR in the two groups before operation(P>0.05),but the observation group was better in these indexes than the control group after operation(P<0.05).
Conclusion: The application of lidocaine surface anesthesia can significantly reduce the degree of pain and stress reactions after tonsillectomy, which has very significant improvement effects.

Key words: Tonsillectomy, Lidocaine, Surface anesthesia, Analgesia, Stress reactions, Children