title: Hoarseness and Horner's syndrome after interscalene brachial plexus block.
mesh_terms: D000328:Adult; D001917:Brachial Plexus; D002045:Bupivacaine; D006685:Hoarseness / Q000209:etiology*; D006732:Horner Syndrome / Q000209:etiology*; D006801:Humans; D008297:Male; D009407:Nerve Block / Q000009:adverse effects*
chemical_list: D002045:Bupivacaine