Orthopedic Surgery
Conditions
Keywords
Regional Anesthesia, Ultrasound guidance, Nerve stimulation, Orthopedic surgery
Brief summary
The purpose of the study is define the minimal intensity of stimulation range at which the needle is closed to the nerve without penetrating its surface (epineurium layer) in ultrasound guided peripheral nerve blockade
Detailed description
The needle is placed at the target under ultrasound guidance the nerve stimulator is turned on and the intensity increased until motor response is observed the Minimum Intensity Observation (MIS) is recorded before injection of local anesthetic
Interventions
PROCEDUREMeasure of the minimal intensity of stimulation during ultrasound guided peripheral nerve blockade
A needle is placed at the target under ultrasound guidance, the nerve stimulator is turned on and the intensity increased until motor response is observed. The Minimal Intensity of Stimulation is recorded before injection of local anesthetic
Sponsors
University Hospital, Montpellier
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
SUPPORTIVE_CARE
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* Patient who need a Orthopedic surgery * Peripheral nerve block * More or equal to 18 years old * I to III ASA classification status * Benefit from an insurance regimen
Exclusion criteria
* severe coagulopathy * allergy to local anesthetics * local cutaneous lesion
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Measurement of Minimum Intensity Stimulation | estimated between 2 minutes and 20 minutes. | Minimal Intensity Stimulation (MIS) was measured Using a specific nerve stimulator (modified HNS 12 B. BRAUN, Melsungen, Germany) ; the value are noted in mA. \[0- 1.5\]. The time frame is only related to procedure of PNB. In other term, the period of assessment should be estimated between 2 minutes and 20 minutes. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| tissure pressure at the target | estimated between 2 minutes and 20 minutes. | Tissue pressure at the target was measured Using a specific pressure sensor (compuflow pump Milestone Scientific, Livingston, NJ, USA) ; the value are noted in mm Hg. \[0- 900\]. from beginning to end of ultrasound guided peripheral nerve blockade |
Countries
France
Outcome results
None listed