Tesis

A Qualitative Histological Assessment Of Various Preservant In Short Term Preservation Of Split Skin Grafts.

BACKGROUND. This paper provides a qualitative description of the histological appearances and changes occurring in human split skin grafts stored at 4 configurations over a 1-week period. During the storage time, changes were seen in all layers of the epidermis and dermis. The most notable early features were nuclear and cellular swelling and pleomorphism. After 7 days nuclear and cellular shrinkage, halo formation and pyknosis became evident. The most worrying histological feature was the development of dermoepidermal blebs. These were evident by day 7 and progressed to cleavage off and ultimately complete separation of the epidermis from the dermis. METHODS. A comparison of these features in human split skin grafts stored as sheets stored rolled, at either strictly or roughly 4 ix o C revealed differences. And consist in two preservant group, the control is using NaCl 0,9%, and the trial is using glycerol 80%. The study was conducted prospectively, see the state or characteristic of the early skin graft preservation and preservation day 7 between the use of 0.9% NaCl solution and 80% glycerol solution. Comparing the results using chisquare test (categorical data with categorical that the use of 0.9% NaCl and 80% glycerol to the occurrence or non-occurrence of the dermoepidermal blebs, halo formation, cellular pyknosis, nuclear and cellular shrinkage on day 7) RESULTS. This research use a chi-square test. Results seen as Asymp.Sig (2-sided) with a value of 0.001, meaning meets p < 0.05. Hypothesis 0 is rejected, and Hypothesis 1 is accepted which means that there are significant differences between the use of NaCl 0.9% compared with 80% glycerol on the incidence dermoepidermal blebs, halo formation, cellular pyknosis, nuclear and cellular shrinkage on day 7 skin graft preservation. Skin grafts that were preserved using 0.9% NaCl on day 7 had a 4.25 times greater risk for experiencing dermoepidermal blebs, halo formation, cellular pyknosis, nuclear and cellular shrinkage compared with the preserved skin graft using glycerol 80% at day 7 with P = 0.001 (significant). We conclude that the viability of stored skin is improved if it is stored at a uniform 4 o C as rolled sheets and preserved with glycerol 80%.
Keywords : split-thickness skin graft, preservants, glycerol 80%