The effects of ultrasound guidance and neurostimulation on the minimum effective anesthetic volume of mepivacaine 1.5% required to block the sciatic nerve using the subgluteal approach.

Full Abstract

BACKGROUND: We tested the hypothesis that ultrasound (US) guidance may reduce the minimum effective anesthetic volume (MEAV(50)) of 1.5% mepivacaine required to block the sciatic nerve with a subgluteal approach compared with neurostimulation (NS). METHODS: After premedication and single-injection femoral nerve block, 60 patients undergoing knee arthroscopy were randomly allocated to receive a sciatic nerve block with either NS (n = 30) or US (n = 30). In the US group, the sciatic nerve was localized between the ischial tuberosity and the greater trochanter. In the NS group, the appropriate muscular response (foot plantar flexion or inversion) was elicited (1.5 mA, 2 Hz, 0.1 ms) and maintained to

Author information

Author/s: Danelli, Giorgio (G); Ghisi, Daniela (D); Fanelli, Andrea (A); Ortu, Andrea (A); Moschini, Elisa (E); Berti, Marco (M); Ziegler, Stefanie (S); Fanelli, Guido (G);

Affiliation: Department of Anesthesia, Intensive Care and Pain Therapy, University Hospital of Parma, 43100 Parma, PR, Italy. gdanelli(-atsign-)ao.pr.i

Journal and publication information

Publication Type: Comparative Study; Journal Article; Randomized Controlled Trial

Journal: Anesthesia and analgesia (Anesth Analg), published in United States. (Language: eng)

Reference: 2009-Nov; vol 109 (issue 5) : pp 1674-8

Dates: Created 2009/10/21; Completed 2009/11/05;

PMID: 19843807, status: MEDLINE (last retrieval date: 11/5/2009, IMS Date: )

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