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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
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
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Patient with ultrasound guided peripheral nerve blockade | Experimental | 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. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Measure of the minimal intensity of stimulation during ultrasound guided peripheral nerve blockade | Procedure | 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 |
| Measure | Description | Time Frame |
|---|---|---|
| Measurement of Minimum Intensity Stimulation | 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. | estimated between 2 minutes and 20 minutes. |
| Measure | Description | Time Frame |
|---|---|---|
| tissure pressure at the target | 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 | estimated between 2 minutes and 20 minutes. |
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Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| University Hospital of Annecy | Annecy | France | ||||
| University hospital of Bordeaux |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 33323786 | Derived | Varobieff M, Choquet O, Swisser F, Coudray A, Menace C, Molinari N, Bringuier S, Capdevila X. Real-Time Injection Pressure Sensing and Minimal Intensity Stimulation Combination During Ultrasound-Guided Peripheral Nerve Blocks: An Exploratory Observational Trial. Anesth Analg. 2021 Feb 1;132(2):556-565. doi: 10.1213/ANE.0000000000005308. | |
| 32791158 |
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| Bordeaux |
| France |
| University hospital of Clermont-Ferrand | Clermont-Ferrand | France |
| University Hospital of Colmar | Colmar | France |
| University hospital of limoges | Limoges | France |
| University hospital of Marseille | Marseille | France |
| University Hospital of Montpellier | Montpellier | 34295 | France |
| University hospital of Nice | Nice | France |
| University Hospital of Reims | Reims | France |
| Capdevila M, Choquet O, Saporito A, Djanikian F, Swisser F, Marques M, Bringuier S, Capdevila X. Injection pressure monitoring during peripheral nerve blocks: from bench to operating theatre. Anaesth Crit Care Pain Med. 2020 Oct;39(5):603-610. doi: 10.1016/j.accpm.2020.03.022. Epub 2020 Aug 10. |