?:definition
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Plain (nonimpregnated) dressings made of synthetic materials that are cut to fit around a tracheostomy tube or other drainage site (e.g., with a keyhole in the middle of the dressing). The dressing materials can be either polyurethane foam or polyurethane film and viscose. Tracheostomy dressings are used to absorb and disperse the exudates away from the skin; they are used mainly in the management of wounds after tracheostomy.
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