Defined and refined: criteria for identifying wound infection revisited.

Clinical criteria for the identification of wound infection are regularly based on a list created by Cutting and Harding (1994). This list was established from empirical data generated in a large, multidisciplinary clinical practice, and is now widely accepted as a seminal article in wound care. Both Cutting (1998) and Gardner et al (2001) have conducted validation exercises on these wound infection criteria, based on the assumption that the criteria broadly apply to most wound types. Although many of the original criteria do apply across the spectrum of wound types, the major categories of wounds should be considered separately to avoid the possibility of overlooking the presence of infection. The focus of this article is a review of the published literature on wound infection criteria for acute and surgical wounds, diabetic foot ulcers, venous and arterial leg ulcers, pressure ulcers and burns. All known criteria for each wound type are presented, as well as an outline of the ongoing research project to refine the criteria by wound type using a Delphi panel technique. No attempt has been made to correlate visual signs and symptoms with microbiological sampling techniques. It is clear that there are subtle variations between infection criteria for wound types and that these should be recognized if treatment is to be given appropriately and promptly, and morbidity avoided.