Upper Extremity Injury Trauma Clinical Trial
Official title:
Ropivacaine Volume for Ultrasound-guided Retrograde Infraclavicular Brachial Plexus Block
The retrograde infraclavicular brachial plexus block has been proved an effective and safe approach. Realtime ultrasound guide will facilitate a successful peripheral nerve block. The purpose of this study was to determine the medium effective volume required to produce an effective retrograde infraclavicular block using an ultrasound (US)-guided technique.
Thirty adults undergoing elective upper limb surgery received an US-guided retrograde infraclavicular block. The initial concentration of 0.5% ropivacaine injected was 30 ml, which was subsequently varied at a ratio of 1: 1.2 for each consecutive patient according to the response of the previous patient. The medium effective volume (EV50) was determined using the Dixon and Massey up-and-down method. The effective volume in 95% of patients (EV95) was calculated using probit regression. ;
Endpoint Classification: Safety/Efficacy Study, Intervention Model: Single Group Assignment, Masking: Single Blind (Subject)
| Status | Clinical Trial | Phase | |
|---|---|---|---|
| Completed |
NCT02862041 -
Effectiveness of Echogenic and Nonechogenic Needles in Ultrasound Guided Infraclavicular Brachial Plexus Block
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N/A |