An interventional study of Interscalene block for shoulder arthroscopy in Shoulder Arthroscopy and Ultrasound-guided Interscalene Nerve Block, sponsored by University of California, San Francisco. Completed at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2020-03-19.
Sponsored by University of California, San Francisco · Not applicable, Interventional, and Treatment
This is a prospective randomized clinical trial to determine where is the optimal location for local anesthetic injection for ultrasound guided interscalene nerve blocks. The investigators are investigating if local anesthetic deposited between the nerve roots is more effective than local anesthetic deposited in the interscalene groove.
University of California, San Francisco is the lead sponsor of 2,132 studies on the registry; 375 are open to participants now.
Of its 262 completed or terminated interventional studies of FDA-regulated products, 196 (75%) have results posted.
Counted across the registry records on this site, refreshed daily.
ASA I-II patients who are 18 years and older and who are scheduled for shoulder arthroscopy are eligible for enrollment provided they do not have any of the following exclusion criteria.
Exclusion Criteria:
Patients undergoing shoulder arthroscopy will have an interscalene nerve block by injection of ropivacaine in the interscalene groove anterior and posterior to the brachial plexus nerves.
Procedure: Interscalene block for shoulder arthroscopy
Patients undergoing shoulder arthroscopy will have an interscalene nerve block by injection of ropivacaine in the interscalene groove inbetween the C5 and C6 nerve roots.
Procedure: Interscalene block for shoulder arthroscopy
Onset of motor blockade
Time to loss of shoulder abduction.
Time frame: 1 hour from time of injection
Patient Satisfaction Score
Time frame: 24 hours
Opioid consumption
Opioid consumption - perioperative and post discharge
Time frame: 24 hours
Quality of Nerve block
onset of sensory block
Time frame: 24 hours
Incidence of post-operative nausea/vomiting
Time frame: 24 hours
Duration of nerve block
Duration of analgesia from nerve block
Time frame: 24 hours
Number of needle passes
Time frame: 1 hour
Number of paresthesias
number of paresthesia experience during nerve block
Time frame: 1 hour
Residual paresthesia
incidence of residual paresthesias
Time frame: 24 hour
This study is completed, as verified in Mar 2020. You cannot join it, but the record below documents what was studied.
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University of California, San Francisco