An influence study of the different types of wound dressings on red light transmittance / 中华老年医学杂志

ABSTRACT

Objective:To investigate the influence of different types of wound dressings on red light transmittance.Methods:A treatment environment for wounds exposed to red light was simulated.Red light transmittance of four types of 19 dressings commonly used in clinic were detected respectively and compared.The transmittance was calculated as the ratio of the intensity of the red light through the dressing to the intensity of the injected red light.Results:The red light transmittance for each dressing was the following (1)Cotton gauze and pad 29.4% for one piece of coarse gauze, 10.5% for one cotton pad; (2)Oil dressings 73.0%~79.1% for light-color oil dressings, 41.7% for dark-color oil dressings-Atrauman ?; (3)Hydrocolloid dressings 87.8%~90.2%; (4)Foams 74.7% for light-color ultra-thin foam-Mepilex ? sheet, 0.8% for black-color thicker foam dressings-Mepilex ? Ag dressing, and 20.5%-54.2% for the other foam dressings. Conclusions:The red light transmittance of hydrocolloid dressing, light-colored oil gauze dressing and light-colored ultra-thin foam dressing is higher, with less red light-blocking effect, and the dark-color or thicker dressings had more blocking effect, which showed different therapeutic effect on wound.Gauze and cotton pad have great blocking influence on red light transmittance, and are not suitable for temporary covering of wound during red light treatment.Hence, the effect of wound dressing on red light transmittance should be taken into account when the wound is treated with red light.