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The protective effect of procaine blocking on nerve-electrophysiological study during operation
1Department of Orthopedics, First Affiliated Hospital, Anhui Medical University, Hefei 230022, China.
Objective:
To clinically evaluate the protective effect of procaine blocking on nerves.
Methods:
Electrophysiological examination before and after procaine blocking was conducted on 32 nerves during operation, 18 of which were donor nerves and 14 were injured ones.
Results:
The latency of somatosensory evoked potentials (SEPs) was lengthened (15.30%) and the amplitude was lowered (18.47) after procaine blocking. Compared with the values before procaine blocking, the differences were significant (P < 0.01 and P < 0.05, respectively). SEP waves disappeared after procaine blocking in some cases (28.13%).
Conclusion:
Latency of SEP is lengthened and amplitude is lowered after procaine blocking. In some cases, SEPs even disappear.