Exploratory analysis of the bacteriological status of post-irradiation wounds and its relationship to healing

AimsTo investigate the bacteriological status of post-irradiation wounds and its relationship to wound healing in patients with nasopharyngeal cancer.Materials and methodsOne hundred and forty-six nasopharyngeal cancer patients with post-irradiation wounds on one or both sides of the neck were studied prospectively. Swabs were taken from the wounds at the initial study visit for bacteriological examination. A further swab for culture was taken when possible signs of infection developed. Wound healing was assessed on alternate days with respect to wound condition, the presence of clinical infection and healing time.ResultsThe results showed that most of the post-irradiation wounds were colonised with bacteria. This was not associated with clinical signs of infection in any instance. There was no association between wound healing time and the presence of organisms, the identity of organisms, the number of species of organisms, or the use of antibiotics.ConclusionsThe presence of bacteria in post-irradiation wounds, in the absence of clinical signs of wound infection, is not a barrier to wound healing. Oncology practitioners should recognise the unique features of radiation-induced wounds and skin reactions with confidence and provide appropriate treatment as needed.