Date	Event	Description
3 August 2009	New search has been performed	We reran our searches (2005 to January 2009). We identified 10 new studies but only one (Movafegh 2008) was suitable for inclusion. Movafegh 2008 compared the herbal medication Passiflora incarnata with placebo. They found an anxiolytic effect but no difference in levels of sedation or time to discharge.
3 August 2009	New citation required but conclusions have not changed	Change in authorship: previously Walker KJ, Smith AF, Pittaway A. Now Walker KJ, Smith AF. Minor changes were made to the review text and formatting but no changes were made to either the content of discussion or conclusions.
8 February 2008	Feedback has been incorporated	Reply to Dr Cyna's comments 7th Feb 2008
16 January 2008	Amended	Converted to new review format.
3 February 2006	Amended	Change in authorship; previously Smith AF, Pittaway A. Now Walker KJ, Smith A, Pittaway A.
11 January 2006	New search has been performed	Update Issue 2, 2006: We found another four studies on re‐running the search strategy. Three of these studies were not suitable and were excluded from the review (Bauer 2004; Imura 2002; Ohqvist 2004). Only one study was eligible for inclusion (De Witte 2002). De Witte 2002 compared premedication with oral midazolam or alprazolam with placebo in 45 patients. Outcomes measured were time to discharge from the post anaesthesia care unit (PACU), discharge from clinic and psychomotor tests of recovery (Trieger Dot Test and Digital Symbol Substitution). They found no difference in discharge time following oral premedication. Both drugs resulted in impaired performance in the psychomotor tests at time of discharge from PACU but results had returned to baseline by time of discharge from hospital. The overall findings of the review have been unchanged.
1 November 2002	New search has been performed	Searches rerun