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| Methods | Randomized, parallel design |
| Participants | 210 patients undergoing elective hand or elbow surgery requiring infraclavicular plexus block |
| Interventions | US versus stimulating needle and catheter placement |
| Outcomes | Motor and sensory block success Complications Intraoperative analgesia requirement Time for catheter insertion |
| Notes | Study registered on clinicaltrials.gov (identifier: NCT 01136447). Completed but results not yet posted or study published |
