British journal of clinical pharmacology
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Br J Clin Pharmacol · Mar 2009
Randomized Controlled Trial Meta Analysis Comparative StudyPain on injection with microemulsion propofol.
To evaluate the incidence and severity of injection pain caused by microemulsion propofol and lipid emulsion propofol in relation to plasma bradykinin generation and aqueous free propofol concentrations. ⋯ Higher aqueous free propofol concentrations of microemulsion propofol produce more frequent and severe pain. The plasma kallikrein-kinin system may not be involved, and the agents that reduce injection pain may not act by decreasing aqueous free propofol concentrations.