Signs of Inflammation After Sciatic Nerve Block in Pigs
2005; Lippincott Williams & Wilkins; Linguagem: Inglês
10.1213/01.ane.0000184255.43746.89
ISSN1526-7598
AutoresWolfgang Voelckel, Günther Klima, Anette C. Krismer, Christopher Haslinger, Karl H. Stadlbauer, Volker Wenzel, Achim von Goedecke,
Tópico(s)Spine and Intervertebral Disc Pathology
ResumoNerve stimulators are widely used to assist with peripheral nerve blocks but do not eliminate the risk of nerve injury. We evaluated the histologic findings 6 h after sciatic nerve block with bupivacaine in pigs. When a motor response was still obtained with a current <0.2 mA (n = 10), the postmortem microscopic evaluation revealed lymphocytes and granulocytes sub-, peri-, and intraneurally in 5 (50%) of 10 pigs. No signs of inflammation were observed when the muscle contraction was achieved with a current between 0.3 and 0.5 mA (P = 0.03). In conclusion, the current required to elicit a motor response, the position of the needle tip, and the subsequent likelihood of nerve damage merit further evaluation.
Referência(s)