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Petrolatum gauze as a drainage material is less irritating than other gauze. Secretions do not clot so readily, and it does not stick to the edges of the wound, but it should be prepared in such a manner that plenty of capillary space is available for drainage. The following method of preparation has been found to give a satisfactory product:
Take a large test tube, pack cotton in the bottom to the height of 1 inch (2.5 cm.), pack dry drainage gauze over this to within 2 inches (5 cm.) of the top, place on top of this a small dab of petrolatum, place cotton stopper in mouth of the tube, set upright in the autoclave and sterilize.
The heated petrolatum, in making its way to the bottom of the tube, impregnates the threads of gauze but does not fill the interstices between the threads. Any excess petrolatum is absorbed by the
Robinson WH. THE PREPARATION OF PETROLATUM DRAINAGE GAUZE. JAMA. 1927;89(23):1967. doi:10.1001/jama.1927.92690230002013c
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