In our population of critically ill patients sedated with midazolam or propofol over prolonged periods, midazolam and propofol were equally effective as sedative agents. However, despite remarkable differences in the cost of sedation with these two agents, the economic profile is more favorable for propofol than for midazolam due to a shorter weaning time associated with propofol administration.

The new propofol 2% preparation is an effective sedative agent and is safe because of the low frequency of associated hypertriglyceridemia. The shorter weaning time associated with the use of propofol 2% as compared with midazolam compensates for its elevated cost. The economic benefit of propofol 2% is less than expected because higher doses of propofol 2% than propofol 1% are required over the first 48 hrs.

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