PubMed · 7474205
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H D Jampel. 1995-11-15. Patching for corneal abrasions.. https://doi.org/10.1001/jama.274.19.1504c
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Poly(N-vinyl-2-pyrrolidone)-kappa-carrageenan hydrogels (PVP-KC) were prepared by irradiating the mixtures of aqueous solutions of PVP, KC, potassium chloride, and poly(ethylene glycol) by gamma-rays at different doses. Their preliminary laboratory tests were evaluated to identify their usability in wound dressing applications. For investigation of the effect of components on the gelation of PVP, sol-gel analyses were made and gel fractions of the hydrogels were determined. Mechanical experiments were conducted for both unirradiated and irradiated samples. For investigation of the fluid uptake capacity of the hydrogels, swelling experiments were performed in pseudo-extracellular fluid solution at various temperatures. Acidity/alkalinity (pH) and electrical conductivity tests were achieved from aqueous extracts of hydrogels, and bioadhesion strength of the hydrogels was investigated on human skin.
An evaluation of the sterility of hospital-prepared Soffban bandages was undertaken. Discs of Bacillus stearothermophilus were inserted into the bandage rolls, prior to sterilization in "porous load" autoclaves. The discs were subsequently removed and placed in culture media, with growth of the organism indicating failure of sterilization. It was demonstrated that Soffban could not be sterilized reliably using standard hospital autoclave techniques.