Objective:To observe the clinical effects of low concentration of ropivacaine(0.25%) on cervical plexus block.Methods:Forty patients undergoing thyroid adenoma removal were randomly divided into two groups:group R(n=20) were injected 0.25% ropivacaine in cervical plexus;group L(n=20) were injected 1% lidocaine and 0.19% bupivacaine in cervical plexus.The clinical effects,complications,recovery time and influence on cardiovascular system were observed.Results:There was no significant difference in the onset time between the two groups(P0.05).The recovery from,hoarseness was quicker in group R than in group L(P0.05).Conclusions:It is preferable to use 0.25% ropivacaine in cervical plexus block in regard to clinical effects and safety.
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