Deroofing minor burn blisters--what is the evidence?

It is estimated that 150000 new patients per year will attend an A&E Department or Minor Injury Unit (MIU) with a minor burn injury (Wardrope & Edhouse 1999). There is often conflicting 'evidence' for the management and treatment of minor burns blisters and this can cause variations in the treatment provided within an A&E department resulting in confusion for staff and patients.