Ultrasound-Guided Costoclavicular Brachial Plexus Block Using 0.5% Levobupivacaine Alone or With Dexamethasone as an Adjuvant for Upper Arm Surgical Anesthesia and Postoperative Analgesia: A Randomized Study.

Cureus · 2025 · PMC12049162 · PMID 40322424

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did not reach statistical significanceno p-value reported

The gender distribution of patients was not completely balanced between the two groups, although the difference did not reach statistical significance.

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