Injuries to the Ankle and Foot
Conditions
Brief summary
The aim of this study is to determine the minimum effective volume of LA in 90 % of patients (MEV90) required for US-guided subgluteal sciatic nerve block.
Detailed description
The aim of this study is to determine the minimum effective volume of LA in 90 % of patients (MEV90) required for US-guided subgluteal sciatic nerve block. Success rate is defined as a minimal composite score of 6 points (out of 8 points) at 30 minutes.
Interventions
OTHERSubgluteal Nerve Block
ultrasound-guided subgluteal sciatic nerve block.
Sponsors
McGill University Health Centre/Research Institute of the McGill University Health Centre
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Caregiver, Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
18 Years to 75 Years
Healthy volunteers
No
Inclusion criteria
* age between 18 and 75 years * American Society of Anesthesiologists classification 1-3 * body mass index between 20 and 35
Exclusion criteria
* adults who are unable to give their own consent * pre-existing neuropathy (assessed by history and physical examination) * coagulopathy (assessed by history and physical examination and, if deemed clinically necessary, by blood work up i.e. platelets≤ 100, International Normalized Ratio≥ 1.4 or partial prothrombin time ≥ 50) * renal failure (assessed by history and physical examination and, if deemed clinically necessary, by blood work up i.e. creatinine ≥ 100) * hepatic failure (assessed by history and physical examination and, if deemed clinically necessary, by blood work up i.e. transaminases ≥ 100) * allergy to LA * pregnancy * prior surgery in the subgluteal region * chronic pain syndromes requiring opioid intake at home
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| success rate | 0-30 minutes | minimal composite score of 6 out of 8 points |
Countries
Canada
Contacts
Primary ContactMontrealGH
Outcome results
None listed