Ultrasound Description of the Sciatic Nerve
Anatomical Description of the Sciatic Nerve Via a Lateral Mid-Thigh Approach Using Ultrasound
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
The sciatic nerve block is frequently used for anesthesia or analgesia for surgery of the lower extremities. Ultrasound-guided sciatic nerve blocks performed at the lateral mid-femoral level have been successfully described with subjects in the supine position and the lower limb elevated in order to accommodate the ultrasound probe against the posterior aspect of the thigh. In the pediatric setting in which nerve blocks are commonly performed with the patient anesthetized rather than awake, we find this technique to be unwieldy as a single-operator technique. Using a more ergonomic approach that has not been previously described, we plan to identify and describe the sciatic nerve with the ultrasound positioned against the lateral aspect of the thigh. We hope to describe the appearance of the sciatic nerve and its location in relation to adjacent anatomic structures using this modified approach.
This a prospective cross-sectional study of 40 pediatric subjects 11-17 years of age. Three ultrasound images of the sciatic nerve will be obtained via the lateral mid-thigh approach in 40 pediatric patients scheduled to undergo sciatic nerve block - the first image prior to placement of the block, the second after the nerve is located by the stimulating needle and the third after the injection of local anesthetic.
Study Type
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
- Males or females 11 to 17 years old.
- Patients undergoing lower extremity surgery who are scheduled to have a sciatic nerve block as part of the anesthetic.
- Parental/guardian permission (verbal consent) and child assent. Note: if you record ANY PHI, you will need to obtain written consent since HIPAA requires written authorization for use of PHI.
Exclusion Criteria:
None
Study Plan
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
|---|---|
|
1
Pediatric Patients of ages 11-17
|
Ultrasound will be used to determine the location of the Sciatic Nerve using a lateral mid-thigh approach.
Other Names:
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
|---|---|
|
The primary objective is to describe the appearance of the sciatic nerve and its location in relation to adjacent anatomic structures using ultrasound from the lateral mid-thigh position.
Time Frame: 10 minutes
|
10 minutes
|
Secondary Outcome Measures
Outcome Measure |
Time Frame |
|---|---|
|
A secondary objective is to describe correlations between any of the measured variables and the patient's mid-thigh circumference or weight.
Time Frame: 10 minutes
|
10 minutes
|
Collaborators and Investigators
Collaborators
Investigators
- Principal Investigator: Arjunan Ganesh, MBBS, Children's Hospital of Philadelphia
Publications and helpful links
Study record dates
Study Major Dates
Study Start
Primary Completion (Anticipated)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Other Study ID Numbers
- 2008-02-5808
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