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Anesth Analg 1983; 62:215-217
© 1983 International Anesthesia Research Society
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Brachial Plexus Anesthesia and Axillary Sheath Elastance

Robert L. Lennon, DO, and John W. Linstromberg, MD

Department of Anesthesiology, Mayo Clinic, Rochester, MN 55905.

Abstract

Large volumes of an anesthetic solution used during regional axillary anesthesia may produce elevated pressures within the axillary sheath that lead to arterial compression and diminished blood flow. We measured axillary sheath pressure as a function of injected volume in 20 patients scheduled for hand surgery. Bupivacaine without epinephrine was injected into the axillary sheath in 10-ml increments until a cumulative volume of 50 ml was attained. Elastance ({Delta}P/{Delta}V), where {Delta}P equals change in pressure (mm Hg) and {Delta}V equals change in volume (ml), was 0.8 ± 0.1 (± SEM) mm Hg/ml in successful block and 0.09 ± 0.1 mm Hg/ml in unsuccessful blocks. Axillary sheath pressure did not exceed mean arterial pressure for periods longer than 60 s. We conclude that vascular insufficiency resulting from arterial compression following axillary block anesthesia is unlikely.

Key Words: ANESTHESIA, Regional: axillary block




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Transient Vascular Insufficiency After Axillary Brachial Plexus Block in a Child
Anesth. Analg., May 1, 2004; 98(5): 1284 - 1285.
[Abstract] [Full Text] [PDF]


Lippincott, Williams & Wilkins Anesthesia & Analgesia® is published for the International Anesthesia Research Society® by Lippincott Williams & Wilkins with the assistance of Stanford University Libraries' HighWire Press®. Copyright 2006 by the International Anesthesia Research Society. Online ISSN: 1526-7598   Print ISSN: 0003-2999 HighWire Press
Copyright © 1983 by the International Anesthesia Research Society.