User-testing guidelines to improve the safety of intravenous medicines administration: a randomised in situ simulation study.

This study compared the frequency of intravenous (IV) medication errors using the current National Health Service Injectable Medicines Guide (IMG) versus revised IMG-based user-testing, which included such revisions as provision of equations and tables to support rate calculations. Findings indicate that user-tested guidelines led to fewer medication errors, less time to prepare and administer IV medications, and increased staff confidence.