Observing Bacteria and Blood

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Module 1 Microbiology Internet Scavenger

Read the Hand washing article from the CDC Emerging Infectious Diseases Journal and answer the following questions. This document is posted in the Read and Study section of this module.

When was this article published? (Hint: Check the bottom of the pages) March – April 2001

In the DEFINITIONS Section

What are the two major groups of organisms?
1. Resident Flora – organisms that normally reside on the skin 2. Transient Flora

What is hand hygiene?
Hand hygiene has several actions that are intended to decrease colonization with transient flora. You can have good hand hygiene by thoroughly washing your hands with an unmedicated detergent and water or simply water alone. You can also practice hand disinfection. Your objective with hand hygiene is to prevent the cross-transmission by removing dirt and loose transient flora. What is hand disinfection?

With hand disinfection, you are trying to achieve the similar goal of preventing cross-transmission to decrease colonization with transient flora. In this procedure, one would add an antiseptic agent to the detergent. You use an antiseptic solution to clean your hands, either with medicated soap or alcohol.

In the section Hand Hygiene Agents
What agent has excellent activity and the most rapid bactericidal action of all antiseptics? Alcohol-based preparations

Which alcohol is the most effective? N-propanol
Which alcohol is the least effective/? ethanol

After extensive reduction following hand disinfection with an alcohol preparation, how long does it take for the resident skin flora to become completely restored? Several hours

What were the factors associated with increased bacterial contaminations levels on the hands? Direct patient contact, respiratory care, handling body fluids, and disruption in the sequence of patient care.

In the section Factors Influencing Noncompliance with Hand Hygiene

What factors were found to...
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