Date	Event	Description
2 January 2013	Amended	Edit made to Anand 1999, 'Characteristics of included studies' table Interventions: Loading dose corrected to read "100 mcg/kg for all gestational ages" Placebo group (n = 21) corrected to read "dextrose 10%"
10 June 2008	Amended	Converted to new review format
31 August 2007	New search has been performed	This updates the review, "Opioids for neonates receiving mechanical ventilation", published in the Cochrane Library, Issue 1, 2005 (Bellù 2005) Updated strategy for search done in June 2007 found no new studies. Secondary reports from previous studies were identified. Data from these reports are now included in the review. Hypotension requiring medical treatment is now included among the secondary outcomes
31 August 2007	New citation required and conclusions have changed	Substantive amendments made