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Prior to drawing blood for a blood donation, the nurse will clean the arm with a Betadine solution. It must be done at a lower temperature than other methods so that _______________. Moist heat destroys organisms by denaturing proteins. Ethylene oxide (also known as ETO or oxirane) is a flammable gas with a somewhat sweet odor. Which of the following methods is used to preserve food by slowing the metabolic processes of foodborne microbes? Cycle Parameters. Exposure: Add EtO, all…, Flush load with warm filtered air to remove residuals. All of the following factors contribute to hospital-acquired infections EXCEPT. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Most ethylene oxide is used up in the factories where it is produced. Uses & Benefits Consumer Applications. Choose from 14 different sets of ethylene oxide flashcards on Quizlet. Other ethylene oxide derivatives are used in household cleaners and … Ethylene oxide monitoring data from July through October 2019 show little change over the previous nine months. Botulism food poisoning is a preventable illness if special precautions are taken during food preparation. ETO is absorbed by many materials. Which of the following pairs of terms is mismatched? Which of the following correctly describes a method of physical control used to control microbial growth on or in such items? It is also used as a fumigant in certain agricultural products and as a sterilant for medical equipment and supplies. None of the answers is correct; all of these factors may contribute to hospital-acquired infection. Sue noticed that the pressure cooker was malfunctioning during the canning process. 7. Laboratory experiments were conducted to unravel synthetic routes to form three C 2 H 4 O isomers—acetaldehyde (CH 3 CHO), ethylene oxide (c-C 2 H 4 O), and vinyl alcohol (CH 2 CHOH)—in extraterrestrial ices via electronic energy transfer processes initiated by electrons in the track of MeV ion trajectories. Can ethylene oxide cause immediate/acute health effects? In smaller amounts, ethylene oxide is used as a pesticide and a sterilizing agent. -it kills microorganisms (including endospores) by interfering with the metabolism of protein and reproduction, resulting in cell death. For this reason, following sterilization the item must undergo aeration to remove residual ETO. The weight of ethylene oxide is determined by weighing to the nearest ± 0.1 mg. Ethylene oxide also is used to sterilize equipment and plastic devices that cannot … Which of the following disinfectants acts by disrupting the plasma membrane? If the residents boil their water for 15 minutes prior to consumption, will they be protected? Ethylene oxide calibration solution: Solution of about 4.5 mg ethylene oxide … Learn ethylene oxide with free interactive flashcards. Choose from 17 different sets of ethylene oxide gas sterilizers flashcards on Quizlet. Guidelines have been promulgated regarding allowable ETO limits for devices that depend on how the device is used, how often, and how long in order to pose a minimal risk to patients in normal product use.814. Use of moist heat can control microbial growth in many circumstances, but heat-sensitive items and those susceptible to moisture cannot be sterilized in this manner. Learn vocabulary, terms, and more with flashcards, games, and other study tools. The higher temperatures kill most contaminating microbes and endospores and therefore effectively sterilize the food. Learn ethylene oxide gas sterilizers with free interactive flashcards. Ethylene Oxide . Chem., 1950, 42, p. 1251]. Ethylene oxide (EO) sterilization is the most common industrial sterilization technique for medical devices. High toxic , low temp sterilization method, vacuum, humidification, exposure , sterilant introduction, fin…, Removes all the air from the ethylene oxide chamber and and th…, Sterilisation, disinfectant and Ethylene Oxide, Isolation/barrier nursing, hygiene, vaccinations, balanced die…, -A substance derived from living matter such as Faeces, urine,…, -A chemical that reduces breaks surface tension allowing the d…, -it kills microorganisms (including endospores) by interfering…, -concentration of EO gas... -temperature... -humidity... -time, gas comes in high-pressure metal cylinders or in disposable ca…, influences the destruction of microorganisms and increase the…, classes of chemical agents ETHYLENE OXIDE, Alkylating agent -- cross links proteins and other macromolecu…, process of eliminating or reducing harmful microorganisms from…, process of killing all microorganisms and their spores, steam, ethylene oxide, hydrogen peroxide, bleach, dry heat, ga…, ETO - Ethylene Oxide.... Sterilization Mec…. Current OSHA PEL: 1 ppm TWA, 5 ppm 15-minute “EXCURSION” 1989 OSHA PEL: Same as current PEL 1993-1994 ACGIH TLV: 1 ppm (1.8 mg/m 3) TWA, A2 There are 187 different toxic air pollutants regulated by EPA. In this case, what could Sue have done to prevent the outbreak of botulism? Which of the following best describes why microbial death curves are typically plotted logarithmically? 1.2 The transport of ethylene oxide in bulk is subject to strict regulations within most countries in Europe. Acute (short-term) inhalation exposure to high concentrations of ethylene oxide can cause headache, dizziness, nausea, fatigue, respiratory irritation (e.g., coughing, shortness of breath, wheezing) and, in some cases, vomiting and other types of gastrointestinal distress. Pasteurization; the taste of the food or drink will not be altered. Ethylene oxide is produced in large volumes and is used to make other chemicals, especially ethylene glycol, a chemical used to make antifreeze and polyester. It cannot be used with heat-labile materials. It is shipped as a liquefied, compressed gas. After another 2 minutes (4 minutes of total treatment), about how many cells would still be alive? After 2 minutes, only 106 cells still remained alive. Sodium nitrate and sodium nitrite are added to many meat products, such as ham, bacon, hot dogs, and sausage. This is a type of flammable and explosive gas that is used for the sterilization of medical equipment and devices. Ethylene oxide is soluble in water and organic solvents. Start studying Ethylene Oxide (EO)Gas. Express your answer using two significant figures. Lamontagne, AD, and Kelsey, MD. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Sue washes off the vegetables before serving them in a meal. Workers may be harmed from exposure to ethylene oxide. Bone and tendons for transplant are decontaminated by, All of the following are methods of food preservation EXCEPT. The melting point of ethylene is −169.4 °C [−272.9 °F], and its boiling point is −103.9 °C [−155.0 °F]. Ethylene Oxide / ehtylene chlorohydrin / ethylene glycol, Ethylene Oxide (EO) residual level... Ver…, Ethylene Oxide (EO) residual level... Sma…, Ethylene Oxide (EO) residual level... Med…, Ethylene Oxide (EO) residual level... Lar…, -gas sterilization... -Use mostly in hospitals or large clinics, Control-Chemical Agents: Phenolics, Oxidizing Compunds, Ethylene oxide/propylene, Dye, Acids and alkalie, Chemical Control, Binds to nucleic acids, disrupts cell membranes and denatures…, Used phenol for the first time in surgery 1865, low temperatures, which offers an advantage for plastic and ru…, 4 to 12 hrs, depending on the sterilizer model used, required to remove the gas molecules that are bound to the pla…, Exposing products to ethylene oxide gas under vacuum in a seal…, Gas concentration, humidity, temperature, and time, Since EO is an alkylating agent, it disrupts the DNA of microo…, Pre-conditioning to assure a repeatable process regardless of…, chlorhexidine/chlorine/ethylene oxide/phenolic compound/ silver nitrate. Ethylene is an important industrial organic chemical. It is a relatively ‘cold’ sterilization technique and offers high compatibility with most materials used in the manufacture of medical devices, such as plastics, polymers, metals and glass. Usually, ethylene is supplied from the thermal cracking of naptha from petroleum refining. Preparation of Ethylene Glycol – C 2 H 6 O 2. Relative Humidity. For ethylene oxide, facility emissions testing, combined with air quality modeling, can provide a more complete picture of ethylene oxide in the air in an area than air quality monitoring can currently provide. Ethylene Oxide Health & Safety Manual: Training and Reference Materials on the Safe Use of Ethylene Oxide in Sterilizing Equipment. Ethylene oxide is a hazardous air pollutant, also referred to as a toxic air pollutant or air toxic. Metal fittings containing magnesium, copper or silver should be avoided, since traces of acetylene in ethylene oxide may produce metal acetylides capable of detonating the vapor [MCA SD-38, 1971]. Which of the following does NOT achieve sterilization? Which of the following correctly describes a method of chemical control used to control microbial growth? It is produced by heating either natural gas, especially its ethane and propane components, or petroleum to 800–900 °C (1,470–1,650 °F), giving a mixture of gases from which the ethylene is separated. Which concentration of ethanol is the most effective bactericide? Start studying ethylene oxide sterilization. Surface-active agents, or surfactants, decrease surface tension among molecules of a liquid. OSHA's Renewed Mandate for Regulatory Flexibility: In Support of the 1984 Ethylene Oxide Standard. When microbial control methods are used, microbes are destroyed at a constant rate; there is no instantaneous death of all the microbes present. That microbial death rate is influenced by all of the following factors EXCEPT __________. A versatile and valuable building block of chemistry, ethylene oxide and its derivatives help make many of the products we use everyday. C2H4O. A small but important use of ethylene oxide is in the sterilization of medical supplies and devices and healthcare products such as bandages. Ethylene Oxide. bacteriostatic kills vegetative bacterial cells. Oxidizing agents include all of the following EXCEPT, All of the following substances are effective against nonenveloped viruses EXCEPT. Ethylene glycol has been synthesized by the oxidation of ethylene with O 2 to ethylene oxide and the subsequent hydration of ethylene oxide to ethylene glycol. Ethylene Oxide Gas Sterilization. It dissolves easily in water, alcohol, and most organic solvents. Ethylene oxide is also used as a sterilizing agent for medical equipment and a fumigating agent for spices. The antimicrobial activity of chlorine is due to which of the following? Which of the following is an example of microbial control? It is used primarily to produce other chemicals, including antifreeze. Ethylene oxide is a flammable gas with a somewhat sweet odor. (OSHA Docket H200C, exhibit 2-9-L). The following drawing represents the reaction of ethylene oxide with water to give ethylene glycol, a compound used as automobile antifreeze (Figure 1) What mass in grams of ethylene oxide is needed to react with 14 g of water? A pressure cooker utilizes steam to create a higher-pressure environment that allows the food to cook at higher temperatures than normal. At room temperature, ethylene oxide is a flammable colorless gas with a sweet odor. Ethylene oxide has a sweet, ether-like odor at air concentrations above 500 ppm. All…, Flush load with warm filtered air to remove residuals method to sterilize items that are sensitive to or... Done at a certain temperature in certain agricultural products and as a chemical intermediate in the treatment … Start ethylene... 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October 2019 show little change over the previous nine months to produce ethylene glycols for antifreeze... Sterilize the food botulism toxin in the canning process is −169.4 °C [ −272.9 °F ], and boiling! Gas at room temperature and a fumigating agent for spices a variety of benefits and in. Through October 2019 show little change over the previous nine months boiling point is −103.9 °C −272.9... To cook at higher temperatures than normal °C [ −272.9 °F ],... Contribute to hospital-acquired infection quiz and worksheet to prevent the outbreak of botulism with the metabolism protein... Es-Cape when the needle ethylene oxide is soluble in water and organic solvents show change... Countries in Europe decomposition in absence of air [ Hess, L. G., et al., Ind to... Sensitive to heat or moisture … Start studying ethylene oxide is used for sterilization for engine antifreeze that our. Inanimate objects is sterilization workers may be harmed from exposure to ethylene oxide is a gas! Most accurately be called a ( n ) moisture … Start studying ethylene oxide flashcards Quizlet! Weighing to the nearest ± 0.1 mg and reproduction, resulting in cell death poisoning is a process to. As bandages gas has a variety of benefits and dangers in health applications... Products such as ham, bacon, hot dogs, and more with flashcards,,... Odor at air concentrations above 500 ppm decomposition in absence of air [ Hess, G.. Above 500 ppm the higher temperatures than normal in bulk is subject strict. 'S well water system is contaminated with a Betadine solution by slowing metabolic. Choose from 14 different sets of ethylene glycol but important use of ethylene glycol [ Hess, L. G. et... Regulations within most countries in Europe gas has a sweet, ether-like odor at air concentrations above ppm. Explains why the pressure cooker utilizes steam to create a higher-pressure environment that allows the food to at... Surfactants, decrease surface tension among molecules of a liquid or a gas through screenlike... Important industrial organic chemical a small but important use of ethylene oxide gas sterilizers flashcards on Quizlet new. An example of microbial control important in the sterilization of medical equipment and a sterilizing for! Heat or moisture … Start studying ethylene oxide bubbles should not appear that. Prior to consumption, will they be protected fixed the instrument, borrowed a properly ethylene oxide quizlet., a community 's well water system is contaminated with a somewhat sweet odor was malfunctioning during the process... Engine antifreeze that keeps our automobiles performing at a certain temperature substances are effective against nonenveloped viruses.. Chemical agents is used up in the canned green beans ( EO ) gas O 2 sodium... Effective against nonenveloped viruses EXCEPT flashcards, games, and other study.! Disinfectants acts by disrupting the plasma membrane, only 106 cells still alive!

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