Ropivacaine Volume for Ultrasound-guided Retrograde Infraclavicular Brachial Plexus Block
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|ClinicalTrials.gov Identifier: NCT01334619|
Recruitment Status : Completed
First Posted : April 13, 2011
Last Update Posted : April 13, 2011
|Condition or disease||Intervention/treatment||Phase|
|Upper Extremity Injury Trauma||Procedure: appropriate volume of 0.5% ropivacaine||Phase 4|
|Study Type :||Interventional (Clinical Trial)|
|Actual Enrollment :||30 participants|
|Intervention Model:||Single Group Assignment|
|Official Title:||Ropivacaine Volume for Ultrasound-guided Retrograde Infraclavicular Brachial Plexus Block|
|Study Start Date :||March 2010|
|Actual Primary Completion Date :||April 2010|
|Actual Study Completion Date :||May 2010|
|ropivacaine volume titration||
Procedure: appropriate volume of 0.5% ropivacaine
initial concentration: 30 ml, subsequently varied at a ratio of 1: 1.2 for each consecutive patient according to the response of the previous patient, until 5 up-and-down cycles completed.
Other Name: Naropin
- VAS of brachial plexus innervated area [ Time Frame: 20 minutes ]effect and side effects of the present block approach for brachial plexus.
- medium effective ropivacaine volume [ Time Frame: about 2 months ]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. EV95 was calculated using probit regression.
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01334619
|Beijing jishuitan hospital|
|Beijing, China, 100035|
|Principal Investigator:||Xiaoguang Zhang, MB||Department of Anesthesiology, Beijing Jishuitan Hospital, Beijing, China|