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ESA05
| Question | Answer |
|---|---|
| What are the effects of ethylene oxide (EO) exposure? | EO exposure can cause skin irritation, respiratory difficulties, headaches, nausea, burns to mucous membranes, and is linked to cancer, reproductive difficulties, and chromosomal alterations |
| What environmental impact is associated with EO | EO can cause damage to the ozone layer |
| What safety precautions are necessary when handling EO? | EO is very flammable and explosive in the air. It can be used in pure 100% form or blended with CO2 or mixed with hydrofluorocarbon to reduce flammability. People working with EO should wear a dosimeter |
| What are the key parameters for EO sterilization | Time, temperature, humidity, and concentration of gas. |
| What type of wrapper material is suitable for EO sterilization | Wrapper must be made with natural fiber combined with nylon and rayon, polyester, and polyvinyl chloride. |
| What materials cannot be sterilized with EO gas? | Acrylics and some pharmaceutical items cannot be sterilized with gas |
| What is the biological indicator for EO sterilization? | The biological indicator is Bacillus atrophaeus |
| What precaution should be taken when removing items from the gas sterilizer? | Do not retrieve items from the aerator before the designated time. leave door ajar for 15 minutes, always were protective gloves |
| What are the advantages for ETO | safe for heat sensitive items, permeates all porous material |
| what are the disadvantages for Eto | expensive, can be dangerous, long process. |
| What factors affect the sterilization time for ethylene oxide (EO)? | The sterilization time varies according to the density of the material being sterilized. |
| What temperature range is suitable for cold sterilization using EO? | The temperature for cold sterilization with EO should be between 85°F and 100°F |
| What temperature range is suitable for warm sterilization using EO? | The temperature for warm sterilization with EO should be between 130°F and 140°F |
| What is the recommended humidity level for EO sterilization? | The humidity during EO sterilization needs to be between 25% and 80%. |
| What is the condition of the items before they go into the Sterrad? | Items must be clean and completely dry before going into the Sterrad |
| What types of materials can and cannot be used in the Sterrad | Cloth and cellulose products cannot be used. Only nonwoven wrapping materials like Tyvek or Mylar are allowed. |
| Can you describe the four phases of the Sterrad process | The Sterrad process has four phases: the vacuum phase, injection phase, diffusion phase, plasma phase |
| o What is The vacuum phase,? | where air is removed from the chamber to reduce the pressure. |
| o What is the injection phase? | where liquid hydrogen peroxide is injected into the central chamber and vaporized. |
| o What is the diffusion phase? | where hydrogen peroxide vapor is dispersed. |
| o What is The plasma phase | where radio frequency energy breaks apart the hydrogen peroxide vapor, creating a plasma cloud containing free radicals and ultraviolet light. This then recombines into oxygen and water |
| How long does the Sterrad process take and does it depend on the load size | The Sterrad process takes between 30 to 60 minutes. The exposure time depends on the type and size of the load. |
| What sterilization method has Sterrad largely replaced and why? | : Sterrad has largely replaced Ethylene Oxide (ETO) because it does not need aeration and is safer to use. |
| What types of materials can Sterrad be used | Sterrad can be used for both metal and nonmetal materials. |
| : What are some tips for loading items into the Sterrad? | Trays should be placed flat on the shelf with peel pouches on their side. Nothing can touch the walls of the chamber, and items cannot be wrapped in cloth or cellulose products. |
| What are the advantages and disadvantages of using Sterrad? | The advantages of Sterrad include its safety for heat-sensitive items, no need for aeration, and ease of use. The disadvantage is that the process takes about 60 minutes. |
| What is another name for Hydrogen peroxide gas plasma and what is its primary use? | : Hydrogen peroxide gas plasma is also known as Sterrad. It is primarily used for the sterilization of medical and surgical devices that are sensitive to heat and moisture1. |
| Can Sterrad be used with or without a plasma cycle and what is the significance of this feature? | : Yes, Sterrad can be used with or without a plasma cycle. This flexibility allows it to be used in a variety of sterilization scenarios, depending on the specific requirements of the items being sterilized1. |
| : How does the sterilization process work with Sterrad | : When items are being sterilized, the peroxide is exposed to a vacuum that creates vapor. This vapor is then forced into the center chamber, ensuring all surfaces of the item are exposed to the sterilant. This process is effective in inactivating micob |
| How does Sterrad ensure the effectiveness of the sterilization process | Sterrad features a control system with a fully integrated hydrogen peroxide monitor as standard equipment for direct measurement of the chamber sterilant concentration. |
| What is the advantage of using Sterrad over other sterilization methods? | is a low-temperature sterilization process that is commonly used to sterilize heat-sensitive devices. It typically requires less time than alternative forms of sterilization, such as ethylene oxide sterilization2. |
| How should items be loaded into a Steris system? | Items should be clean and free of organic matter and blood. Lumens should be dried with forced air. The correct tray must be used and a quick connect for the tray for the lumen. The draining hole must match up. and the lid needs to be in 500 |
| What are the advantages and disadvantages of using Peracetic acid Steris? | The advantages of Peracetic acid Steris are that it is safe for heat-sensitive items and quick to use. The disadvantages are that sterilized items cannot be stored and peracetic acid deteriorates tubing at a faster rate |
| What are the parameters for using Peracetic acid Steris | : The parameters for using Peracetic acid Steris are: Time: The items need to be exposed to Peracetic acid for 12 minutes. Temperature: The temperature should be 122°F. Concentration: The concentration should be 120%. |
| How long should the items be exposed to Peracetic acid? | : The items should be exposed to Peracetic acid for 12 minutes |
| What is the total processing time for using Peracetic acid? | The total processing time depends on the model and is usually between 20 to 30 minutes |
| What temperature should be maintained when using Peracetic acid | The temperature should be 122°F. |
| What concentration of Peracetic acid is recommended? | : The recommended concentration is 120%. |
| How does ozone sterilization work? | Ozone sterilization works by oxidation, which penetrates the membrane of cells, causing them to explode. |
| What is the composition of ozone used in sterilization? | Ozone uses 3 oxygen atoms and operates at low heat. |
| Is ozone environmentally friendly and safer than ethylene oxide (EO)? | Yes, ozone is environmentally friendly and considered safer than EO. |
| What materials can be sterilized using ozone | Ozone can be used on rigid diagnostic instruments, stainless steel, and synthetic substances such as PVC, silicone, and polytetrafluoroethylene (PTFE). However, it cannot be used on implants |
| What are the exposure limits for ozone according to OSHA? | OSHA has set a limit of 0.1 ppm per 8 hours, with no more than 0.3 ppm every 15 minutes. |
| What has the FDA cleared ozone sterilization for? | The FDA has only cleared ozone sterilization for the use of plastic, metal, and some rigid lumens |
| What parameters are essential for ozone sterilization | The critical parameters are time, temperature, vacuum, ozone concentration, humidity, and pressure. |
| How long should items be exposed to ozone for sterilization? | The recommended time for ozone sterilization is 4 ¼ hours |
| What temperature range is suitable for ozone sterilization? | The temperature for ozone sterilization should be between 85°F and 94°F. |
| What concentration of ozone is used during sterilization? | The concentration for ozone sterilization is 85 mg/L for 15 minutes. |
| What biological indicator is commonly used for ozone sterilization? | The biological indicator is Bacillus stearothermophilus. |
| What are the advantages and disadvantages of ozone sterilization? | Advantages: Simple and inexpensive. Leaves no residue. Does not require aeration. Disadvantages: Can be corrosive and destroy natural rubber, latex, natural fiber, and some plastics. Relatively long process. |
| : How does ionizing radiation work in sterilization using Cobalt-60? | Ionizing radiation utilizes gamma rays and beta particles to create ionic energy by knocking electrons out of atoms. |
| What is the mechanism by which Cobalt-60 radiation kills microorganisms? | Cobalt-60 radiation disrupts the DNA of microorganisms, preventing cellular division and ultimately killing them. |
| Which isotope is commonly used for Cobalt-60 radiation sterilization? | Cobalt-60 is the isotope used for this method |
| How long are products typically exposed to Cobalt-60 radiation during sterilization? | The exposure time depends on the strength of the Cobalt-60 source, but products are usually exposed to radiation for 10 to 20 hours. |
| What is the effectiveness of Cobalt-60 radiation as a sterilization method | Cobalt-60 radiation is considered the most effective sterilization method. |
| What types of equipment are commonly prepackaged and sterilized using Cobalt-60? | Most prepackaged equipment, including sharps, sutures, sponges, disposable drapes, and anhydrous materials (such as powder and petroleum goods), undergo Cobalt-60 sterilization |
| What is the basis for event-related sterility in the storage of wrapped sterile goods? | Event-related sterility is based on the principle that sterilized items are assumed to be sterile as long as they remain wrapped with the integrity of the package |
| When are items considered not sterile despite being wrapped? | : Items are not considered sterile if they show signs of exposure to liquid, if they are torn, or if they are stored in a place that lacks environmental control. items transported using a soiled or open system are also not considered sterile. |
Created by:
elizabeth2024