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36 Cards in this Set
- Front
- Back
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EO
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Ethylene oxide
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Ethylene oxide is
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The most stable low temperature sterilant
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Some characteristics of ethylene oxide are
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1. liquid and becomes gas at room temperature
2. in both the liquid and gaseous state 100% EO is highly flammable and explosive 3. Completely soluble in water at 10°C or 50°F colorless and orderless up until concentration reaches 700 ppm 4. Toxic to patients and personnel can cause severe burns to skin and tissue in liquid state. In gaseous state it can cause irritation to the skin mucous membranes and respiratory tract |
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Two types of EO used in healthcare facilities
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Undiluted 100% provided and single-dose cartridges. EO mixtures consisting of EO and either HCFC or CO2
**** single-dose cartridges of EO 100% our most popular and relatively cost-effective |
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Prep for EO Sterilization
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Items must be completely dry sterilization and packaging should be maintained in an environment with relative humidity of at least 50%
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BI PCD in an EO sterlizer should be placed
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In the center of the load
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THE BI PCD SHOULD BE HELD AT ROOM TEMPERATURE BETWEEN 65 TO 75°F IN A RELATIVE HUMIDITY OF AT LEAST 35% FOR HOW LONG
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At least two hours to pre-humidify them before they are used
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All EO sterilized items must be what after the sterilization has taken place
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Aerated
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Action level
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Currently set at 0.5 ppm as an eight hour TW at you. The action level is the level at which additional monitoring and/or other actions must be taken
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Aeration is performed in the same chamber as
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Sterilization
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What is the breathing zone
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The area between the nose and upper chest of personnel
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Personnel are monitored every six months when EEO exposures are at
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Action level 0.5 ppm but at or below the PEL one ppm
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Personnel or monitored every three months when
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EO exposure levels are at or above the PEL
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Monitoring maybe discontinued if EO exposure levels are
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Documented to be below the 0.5 ppm action level on two consecutive occasions at least seven days apart
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Employee monitoring what are the three types of limits on exposure to EO
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The permissible exposure limit PEL ,the action level and the excursion limit EL
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Monitoring data and medical surveillance data must be maintained for how many years after employment
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30 years
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All EEO sterilized items must be what after the sterilization has taken place
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Aerated
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Aeration removes
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Residuals from packing materials
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Aeration is performed in the same chamber as Harry ancient times
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Sterilization
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Aeration times
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12 hours at 122°F
10 hours at 130°F eight hours at 140°F |
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EO is classified as what two types of hazards
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Carcinogen and reproductive
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Ethylene glycol can be when EO reacts with
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Water it is characterized by the presence of a brown oily film which is poisonous and toxic
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Ethylene chlorohydrin results from the reaction of EO and
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Saline or body fluids
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Employee monitoring what are the three types of limits on exposure to EO PEL
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The permissible exposure limit PEL the action level and the excursion limit EL
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TWA stands for
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Time weighted average ie eight hour
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LT GP
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Low temperature gas plasma was cleared by the FDA and 1993 as an alternative to EO gas.
It is quick low temperature process that uses a combination of hydrogen peroxide vapor and gas plasma |
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LT GP sterilization cycles
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Time, temperature, sterilant, vacuum, injection, diffusion, plasma, repeat injection diffusion plasma, vent
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LTHP
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Quick low temperature sterilization process that uses vaporize hydrogen peroxide as a sterile it is intended for use in sterilizing heat pressure or moisture sensitive devices
Because the byproducts of hydrogen peroxide sterilant our oxygen and water vapor devices Sterali but this process do not require additional aeration lumen cycle takes 55 minutes non lumen cycle 28 minutes |
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Ozone sterilization was approved
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By the FDA and 2004 electricity is added to the O zone to create a higher energy level which has oxidative action against organic manner such fungi Yeast viruses and spores
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What instrument is ozone sterilization good for
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Heat sensitive surgical and diagnostic instruments
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Cycle time for O-Zone sterilization is
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Approximately four hours at a temperature of 30 Celsius to 35 Celsius or 85°F to 94°F
Microbial kill is achieved by oxidation |
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Parameters of O-Zone sterilization are
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Oh zone concentration, temperature, time
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Prep for ozone sterilization
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Wrapping materials can include nonwoven or non-cellulose wraps, polyurethane pouches and anodized aluminum sterilize container systems with disposable noncellulose filters
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Oh zone safety precautions
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Excess exposure can be hazardous to humans, at low levels O-Zone is a respiratory irritant
Oh zone sterilizers have an air exchange rate of 10 air exchangers per hour and the room temperature should be maintained at an average of 68°F to 79°F |
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Dry heat sterilization parameters
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Like an oven temperature and time temperature is 320 Fahrenheit to 338 Fahrenheit time 2 to 4 hours
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Peracetic acid
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FDA approved liquid chemical sterilant two cycles liquid chemical sterilization cycle to process devices diagnostic cycle to test system
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