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Medical Definition of Trimethaphan camsylate
1. D-1,3-dibenzyldecahydro-2-oxoimidazo[c]thieno[1,2-a]thiolium camphorsulfonate;a ganglionic blocking agent that produces vasodilation of brief duration; used in surgery, particularly neurosurgery, to produce a relatively bloodless operative field (controlled hypotension). Synonym: trimetaphan camsylate. (05 Mar 2000)