title: [About the problem of intraneural introduction of anesthetic at regional blocks].
abstract: 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.
  
  
  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%).
  
  
  CONCLUSIONS
  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.
authors.forename: S A
authors.initials: SA
authors.lastname: Beliakin
authors.forename: M S
authors.initials: MS
authors.lastname: Sinitsin
authors.forename: M I
authors.initials: MI
authors.lastname: Tsarev
authors.forename: A A
authors.initials: AA
authors.lastname: Azbarov
authors.forename: S I
authors.initials: SI
authors.lastname: Apevalov
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000779:Anesthetics, Local / Q000008:administration & dosage*; D001917:Brachial Plexus / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009407:Nerve Block / Q000379:methods*; D014463:Ultrasonography
chemical_list: D000779:Anesthetics, Local