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Circumferential Spread of Anesthetic and Success in Sciatic Nerve Blockade

NCT00802581 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 64

Last updated 2011-12-09

No results posted yet for this study

Summary

Current practices when performing any peripheral nerve block may or may not involve ensuring circumferential spread of local anesthetic around the nerve. Ensuring circumferential spread can involve several redirections of the needle above and below the nerve, and potentially could result in either more discomfort for the patient or an increased chance of inadvertent direct trauma to the nerve. Not ensuring spread around the nerve may result in a slower and less complete blockade. The investigators suspect that by ensuring complete spread around the nerve, the speed of block onset would be quicker because it avoids the loss due to diffusion time.

Conditions

  • Sciatic Nerve Blockade for Foot/Ankle Surgery

Interventions

PROCEDURE

Circumferential spread of local anesthetic

The anesthetist will ensure, under ultrasound guidance, that local anesthetic (1 mL of 1% lidocaine) surrounds the sciatic nerve.

PROCEDURE

Non-circumferential spread of local anesthetic

The anesthetist will perform a "single shot" injection of local anesthetic (1 mL of 1% lidocaine) near the sciatic nerve under ultrasound guidance, without ensuring circumferential spread around the nerve.

Sponsors & Collaborators

  • University Health Network, Toronto

    lead OTHER

Principal Investigators

  • Richard Brull, MD · University Health Network, Toronto

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
85 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2009-05-31
Primary Completion
2010-12-31
Completion
2010-12-31

Countries

  • Canada

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT00802581 on ClinicalTrials.gov