RT Journal Article
SR Electronic
T1 The Parasacral Sciatic Nerve Block
JF Regional Anesthesia: The Journal of Neural Blockade in Obstetrics, Surgery, & Pain Control
JO Reg Anesth Pain Med
FD BMJ Publishing Group Ltd
SP 223
OP 228
DO 10.1136/rapm-00115550-199722030-00005
VO 22
IS 3
A1 Gary F. Morris
A1 Scott A. Lang
A1 William N. Dust
A1 Michael Van der Wal
YR 1997
UL http://rapm.bmj.com/content/22/3/223.abstract
AB Background and Objectives The clinical utility of a new parasacral approach for conduction block of the sciatic nerve was investigated, with critical examination of onset, extent, and success rates when this block was used for surgical procedures below the knee.Methods Thirty ASA I-III patients presenting for surgery on the lower limb were enrolled. All received 30 mL of 1.5% lidocaine with 1:200,000 epinephrine following nerve stimulator identification of the sciatic nerve at ≤0.2 mA or less. Trans-sartorial saphenous nerve blocks were performed to provide anesthesia to the medial leg.Results Overall success for surgical anesthesia with this block was 97%. All components of the sacral plexus could be blocked with this approach, and 93% of patients displayed evidence of obturator nerve motor block. However, no patient displayed evidence of obturator sensory anesthesia that could be mapped. Saphenous nerve blocks were 100% effective in providing surgical anesthesia for the procedures performed.Conclusions: The parasacral approach to the sciatic nerve exhibits a high success rate, resulting in anesthesia of the entire sacral plexus and generally in motor block of the obturator nerve was an interesting observation.