Research Objective: To raise safety of conduction anesthesia of a humeral plexus by depression of cases of intraneural introduction of anesthetic on the basis of application of ultrasonic scanning during performance of blockade.
Materials And Methods: 137 blockade of a humeral plexus by axillary access are executed. Depending on a method of identification of nerves patients have been distributed on two groups: 1) identification of nerves by means of ultrasonic scanning (n=68); 2) a combination and ultrasonic scanning for identification of nerves (n=69).
Results: At a finding of a section of a needle in immediate proximity from a nerve (according to ultrasonic scanning) peripheral motor reaction was absent in 63,8% of cases. Intraneural introduction of a solution of local anesthetic was observed more often (p<0,05) at identification (69,6%), than at ultrasonic identification of nerves (17,6%).
The Conclusion: Diffusion of local anesthetic observed by means of ultrasonic scanning confirms an exact site of an end of a needle that allows to avoid its intraneural introduction.
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