The differences between each two dressings in water-absorbing rate were statistically significant (with P values all below 0.01). (1) The water-absorbing rate at PIH 24 of Allevyn foam dressing, Mepilex foam dressing, and Biatain foam dressing were respectively (646 ± 18)%, (616 ± 19)%, and (499 ± 11)% (F = 423.854, P < 0.01). Data were processed with one-way analysis of variance and analysis of variance of repeated measurement, and LSD method was applied in paired comparison. ![]() Five samples of each dressing were used for each index. The simulated wound exudation was used to test the water-absorbing rate of dressings at post immersion hour (PIH) 24, water-absorbing speed of dressings at post immersion minute (PIM) 1, 5, 10, and 20, the diffusion diameter of exudation dripped on the surface of dressings for 5 min to reflect the water-locking capacity of dressings, and the water evaporation capacity of exudation after being sealed up by dressings for 24 h to reflect the air permeability of dressings. H2O respectively in the weight of 8.3 g and 0.367 g were diluted with distilled water to the volume of 1 L to simulate wound exudation.The comparison was made among Allevyn foam dressing, Mepilex foam dressing, and Biatain foam dressing that were commonly used in clinic. To compare the properties of water-absorption, water-locking, and air permeability among several foam dressings, and to provide references for clinician in choosing dressings for different types of wounds.
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