Listed below are seven steps in aseptic hand washing. Put the step into the order in which it occurs in aseptic hand washing. Rank the options below. Use a single-use disposable nailbrush or plastic, single-use nail cleaner under running water to dislodge dirt around your nails and cuticles. Rinse your hands well, keeping the hands lower than your forearms and not touching the sink or faucets. With the water still running, dry your hands thoroughly with clean, dry paper towels and then turn off the faucets using a clean, dry paper towel. Discard the towels. Remove all jewelry. Work the soap into a lather, making sure that both hands are lathered. Rub vigorously in a circular motion for 2 minutes. Keep your hands lower than your forearms so that dirty water flows into the sink instead of back onto your arms. Your fingertips should be pointing down. Interlace your fingers to clean between them, and use the palm of one hand to clean the back of the other. Wet your hands and apply liquid soap. Use a clean, dry, paper towel to activate soap pump. Liquid soap, especially when dispensed with a foot pump, is preferable to bar soap. Turn on the faucets using a paper towel, and adjust the water temperature to moderately warm.
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Title: Hand Washing Lab You will be doing a brief experiment and answering some questions. Materials: - Hand lotion - Glitter (you can still find this in any grocery store, in the aisle where the stationary is or in a pharmacy store like CVS or Walgreens, or in Target or Walmart) - Soap - Water Experiment: 1. Put some lotion on your hands and rub them. 2. Sprinkle glitter generously on your non-dominant hand and rub both hands together. Document this by having someone take a photo. 3. Then wash your hands with soap and water, scrubbing your hands together for 20 seconds. 4. Pat your hands with a paper towel. Take photos of both hands and the paper towel. Answer the following questions: 1. Why wash your hands? The CDC recommends cleaning hands in a specific way; describe this method and give reasons why this specific way is recommended. 2. Estimate what percentage of glitter remains on your hands. 3. What is the percentage of glitter on your paper towel? 4. Explain the differences between Resident and Transient Flora. 5. How do resident flora affect human health? 6. Describe how transient flora are transmitted between humans. 7. How can thorough hand washing limit the spread of infectious diseases? Submit this report under the handwashing tab in Blackboard. Submit photos of before handwashing and after handwashing.
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Circle all of the items that would be disinfected with chlorine bleach. Use a highlighter to indicate the items that would be disinfected with glutaraldehydes. Underline the items that would be removed with hydrogen peroxide (an antiseptic). Influenza virus, Streptococcus pyogenes, Skin before a vaccine is given, Clostridium tetani, MRSA, Bacillus anthracis spores, Mycobacterium tuberculosis, Endoscopes, Respiratory therapy equipment, Herpes viruses, Kitchen counters, Nonenveloped viruses Activity: Disinfectant or Antiseptic This activity will help you to understand the differences between disinfectants and antiseptics. It can be confusing to understand the difference, so use these definitions to help you out as you work through the activity: Antiseptic - chemicals that kill microorganisms on living skin or mucous membranes, Disinfectant - the inactivation of disease-producing microorganisms on inanimate objects. Using the above definitions, determine what type of decontaminate is being discussed in column B. Place your answer on the line in column A. COLUMN B COLUMN A 1. MRSA on football pads 2. Biofilms on teeth 3. Normal flora on a surgeon's hands and arms 4. Botulism toxin in canned food 5. Microbes under a nurse's fingernails 6. Urological equipment 7. Dental drill 8. Bed linens 9. A brush burn on the knee 10. Contact lenses
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As an alternative to hand washing, some hospitals allow health workers to rub their hands with an alcohol-based antiseptic. The British Medical Journal (Aug. 17, 2002) reported on a study to compare the effectiveness of washing the hands with soap and rubbing the hands with alcohol. One group of health care workers used hand rubbing, while a second group used hand washing to clean their hands. The bacterial count (number of colony-forming units) on the hand of each worker was recorded. The table gives descriptive statistics on bacteria counts for the two groups of health care workers. a. For hand rubbers, form an interval that contains at least $75 \%$ of the bacterial counts. (Note: The bacterial count cannot be less than 0 .) b. Repeat part a for hand washers. c. On the basis of your results in parts a and b, make an inference about the effectiveness of the two handcleaning methods.
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