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I <br />UNIVERSAL PRECAUTIONS (BSI) <br />Medical devices or instruments that require sterilization or <br />disinfection should be thoroughly cleaned before being exposed to the <br />germicide, and the manufacturer's instructions for the use of the <br />germicide should be followed. <br />Studies have shown that HIV is inactivated rapidly after being exposed <br />to commonly used chemical germicides at concentrations that are much <br />lower than used in practice. Embalming fluids are similar to the types <br />of chemical germicides that have been tested and found to completely <br />inactive HIV. In addition to co®aercially available chemical <br />germicides, a solution of sodium hypochlorite (household bleach) <br />prepared daily is an inexpensive and effective germicide. <br />Concentrations ranging from approximately 500 ppm (1:100 dilution of <br />household bleach) sodium hypochlorite to 5,000 ppm (1:10 dilution of <br />household bleach) are effective depending on the amount of organic <br />material (e.g. blood, Gucus) present on the surface to be cleaned and <br />disinfected. Commercially available chemical germicides t.,ay be - more <br />compatible with certain medical devices that aright be corroded by <br />repeated exposure to sodium hypochlorite, especially to the 1:10 <br />dilution. <br />b. Housekeeping <br />Environnental surfaces such as walls, floors, and other surfaces are <br />not associated with transmission of infections to patients or health- <br />care workers. Therefore, extraordinary attempts to disinfect or <br />sterilize these environmental surfaces are not necessary. However, <br />cleaning and removal of soil should be done routinely according to the <br />existing policy. <br />Gloves, gowns, masks, and/or goggles (as appropriate) will be worn by <br />housekeepping personnel whenever contact with -grossly contaminated <br />equipment/areas is anticipated. Decision as to choice of appropriate <br />protective apparel will be made based on knowledge of the job to be <br />done and the extent of the exposure. Consult the existing housekeeping <br />policy for appropriate apparel for patient care areas. <br />1) Routine cleaning and removal of soil shall be done in all patient <br />care areas. <br />2) In addition to routine cleaning, horizontal surfaces (e.g., bedside <br />tables, window sills, and hard -surfaced flooring) shall be cleaned <br />with an effective germicide whenever soiling or visible spills of <br />blood and body fluid occur. <br />3) Cleaning of walls, blinds, ceilings, and curtains is only <br />recommended if they are visibly soiled (exception: strict <br />isolation). <br />4) Terminal cleaning shall be performed for all patients upon <br />discharge and/or removal from a known category of <br />isolation/precaution. <br />