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Parasacral approach to block the sciatic nerve: a 400-case survey
Jacques Ripart1, Philippe Cuvillon, Emmanuel Nouvellon
1Fédération Anesthésie-Douleur-Urgence-Réanimation, Centre Hospitalier Universitaire, Nimes, France. jacques.ripart@chu-nimes.fr
Regional Anesthesia and Pain Medicine
|March 15, 2005
Summary
The parasacral sciatic nerve block is a highly effective and easy-to-learn procedure for pain management. This study confirms its efficacy in a large patient cohort, demonstrating a high success rate.
Area of Science:
- Anesthesiology
- Regional Anesthesia
- Pain Management
Background:
- Previous studies on parasacral sciatic nerve block involved limited patient numbers (155).
- Efficacy and ease of performance require validation in a larger patient group.
Purpose of the Study:
- To assess the efficacy of the parasacral sciatic nerve block in a larger patient population.
- To evaluate the ease of performance and teaching potential of this regional anesthesia technique.
Main Methods:
- Prospective evaluation of 400 consecutive parasacral sciatic nerve blocks.
- Data collected included practitioner expertise, block performance time, stimulation current, injected volume, onset time, success rates, and complications.
Main Results:
- The parasacral block took 7 ± 5 minutes to perform with a mean stimulation current of 0.4 ± 0.1 mA and injected volume of 27 ± 4 mL.
- Onset time for motor and sensory block was 13 ± 7 minutes, with an initial success rate of 94% (376/400), increasing to 96% after supplemental injections.
- No significant difference in failure rates was observed between experienced and less experienced practitioners.
Conclusions:
- The parasacral sciatic nerve block is confirmed as an effective, easy-to-perform, and teachable regional anesthesia technique.
- This approach offers a viable alternative to other sciatic nerve blockade methods.
- Its suitability for less experienced physicians was demonstrated, supporting its widespread adoption.