The safety of nanocrystalline silver dressings on burns: a study of systemic silver absorption.

Abstract

Wound dressings containing silver have been in widespread use for many years. However, there are few quantitative data on the systemic absorption of silver or whether there is associated clinical risk. To assess systemic silver levels when Acticoat dressings containing nanocrystalline silver were used, and to determine whether increases in such levels were associated with haematological or biochemical indicators of toxicity. A prospective, single-centre, open-label study of 30 patients with relatively small burns that required skin grafting. Serum silver levels were measured before, during and at discontinuation of the use of the Acticoat dressings, and again at 3 and 6 months following completion of treatment. The median total postoperative wound size was 12% of the total body surface area. The median time to maximum silver levels was 9 days. The median maximum serum silver level was 56.8 microg/l. The median serum level at 6 months was 0.8 microg/l. There were no haematological or biochemical indicators of toxicity associated with the silver absorption observed in this study. This study has confirmed our view that Acticoat products are safe for use on burns and they remain a standard part of treatment at our centre.