Date	Event	Description
29 November 2010	New search has been performed	This review updates the existing review "Alpha‐1 proteinase inhibitor (a1PI) for preventing chronic lung disease in preterm infants" published in the Cochrane Database of Systematic Reviews (Shah 2005). Updated search in October 2010 found no new trials. No changes to conclusions.
15 October 2008	Amended	Converted to new review format.
15 March 2005	New search has been performed	This review updates the existing review of "Alpha‐1 proteinase inhibitor (a1PI) for preventing chronic lung disease in preterm infants" published in The Cochrane Library, Issue 3, 2001 (Shah 2001). The updated review has no further information as no new studies were identified.
23 April 2001	New citation required and conclusions have changed	Substantive amendment