British Journal of Anaesthesia, 1995, Vol. 74, No. 4 387-391
© 1995 The Board of Management and Trustees of the British Journal of Anaesthesia
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Effect of arm position on the effectiveness of perivascular axillary nerve block
Department of Anaesthesia, 2034, National University Hospital Rigshopitalet, 2100 Copenhagen Ø, Denmark
Correspondence to Z.J.K.-N.
The influence of arm position on the effectiveness of perivascular axillary nerve block with a catheter was assessed prospectively in two groups of patients. Ninety patients were allocated randomly to receive 1 % mepivacaine with adrenaline 40 ml with the arm either adducted or abducted. Radio- graphs were taken in 1 2 additional patients; six in each group immediately after injection of 2% mepivacaine 20 ml mixed with contrast agent 20 ml. There were no statistically significant differences in onset time, spread of analgesia, motor block or success rate between the two groups. Proximal flow of the local anaesthetic-contrast agent mixture was neither facilitated by arm ad duction nor was it necessary for the development of a successful block.
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