CRCST exam 2023 questions and answers graded A+

CRCST exam 2023 questions and answers graded A+ Classification for Sterilization Packaging - CORECT ANSWERS -Class II Medical Devices (those presenting a potential risk) Packaging used for steam sterilization must be capable of withstanding high temperatures of? - CORECT ANSWERS -250'F - 275'F (121'C - 135'C) Process in which a device is actively subjected to moving air; Ex items being sterilized with ethylene oxide gas. - CORECT ANSWERS -Aeration Microorganism that requires the presence of air or oxygen for growth. - CORECT ANSWERS -Aerobe Packaging choices for dry heat sterilization must be able to tolerate? - CORECT ANSWERS -2-3 hours exposure time and temperature of 320'F - 400'F (160'C - 204'C) Packaging choices for gas plasma sterilization must be able to tolerate? - CORECT ANSWERS -A deep vacuum draw without absorbing the sterilant, interrupting the cycle, or damaging the contents. Broad term describing a wide variety of plain-weave cotton/polyester fabrics having approximately 140 threads per square inch. - CORECT ANSWERS -Muslin The condition that arises when steam is at a temperature which exceeds that of saturated steam at the same pressure. - CORECT ANSWERS -Superheating All linen packaging materials should be held at? - CORECT ANSWERS -Room temperature (64'F to 72'F; 18'C to 22'C) and at a relative humidity ranging from 35% to 70% for a minimum of two hours prior to sterilization. A non-woven packaging material which is the most popular flat wrap. - CORECT ANSWERS -SMS (spunbond-meltblown-spunbond) Sterility Maintenance Covers - CORECT ANSWERS -Should be at least 2 to 3 mils thick. The over -wrap should be clearly marked as a "dust cover" or "protective wrap" to prevent its use as a part of the sterile field. All packaging material should be held at - CORECT ANSWERS -Room temperature (67'F to 72'F; 18'C to 22'C) and at a relative humidity ranging from 35% to 70% for a minimum of two hours before sterilization ANSI/AAMI ST77 recommends a maximum weight of for containerized instruments sets - CORECT ANSWERS -25 pounds Sterility (time-related) - CORECT ANSWERS -A package is considered sterile until a specific expiration date is reached Sterility (event-related) - CORECT ANSWERS -Items are considered sterile unless the integrity of the packaging is compromised (damaged) or suspected of being compromised (damage) regardless of the sterilization date. This sometimes is referred to as ERS (Event-Related Sterility) Point of Use Processing - CORECT ANSWERS -That which allows when a medical device is processed immediately before use, and/ or close to the patient are area Flash sterirization - CORECT ANSWERS -The process by which unwrapped instruments are sterilized for immediate use when an emergency situations arises AAMI - CORECT ANSWERS -Association for the Advancement of Medical Instrumentation AORN - CORECT ANSWERS -Association of peri-Operative Registered Nurses Class 5 (chemical integrators) - CORECT ANSWERS -Integrating indicators designed to react to all critical parameters over a specified range of sterilization cycles Geobacillus Stearothermophilus - CORECT ANSWERS -Highly resistant but relative harmless nonpathogenic microorganism used to challenge steam and dry heat sterilizers A measure of ambient air pressure; the pressure that gas would exert on the walls of a one-cubic foot container - CORECT ANSWERS -Pounds per square inch gauge (psig) Quaternary Ammonium Compounds (quats) - CORECT ANSWERS -Low-level disinfectant. One member of its family: benzalkonium chloride Are cationic surface-active compounds also known as "wetting agents" - CORECT ANSWERS -Quats Phenolics - CORECT ANSWERS -Are intermediate-to low-level disinfectants containing phenol (carbolic acid) which has a long history of distinction and use How do phenols kill (mode of action)? - CORECT ANSWERS -Penetrates cell, wall, and precipitates cell protein What concentration of isopropyl alcohol possesses the most effective disinfecting properties when applied to inaminate objects in U.S. hospitals? - CORECT ANSWERS -70% Mode of action for ethyl or isopropyl alcohol ( how it kills)? - CORECT ANSWERS - Denatures (changes the structure of) proteins Mode of action for chlorine? - CORECT ANSWERS -Inhibits some key enzymatic reactions within the cell, denatures protein, and inactivates nucleic acids Mode of action for Buffered Iodine? - CORECT ANSWERS -Poison cells of nucleic acids; quickly penetrates the cell walls of microorganisms Iodophors - CORECT ANSWERS -Are reactive member of the halogen family, Inventory turnover rate - CORECT ANSWERS -The number of times per year that inventory is purchased, consumed, and replaced. Inventory service level - CORECT ANSWERS -The percentage of items filled (available) when an order is placed. Inventory stock out rate - CORECT ANSWERS -The percentage of items that cannot be filled (are not available) when an order is placed. Superheat - CORECT ANSWERS -Dry steam; the condition of steam when its temperature is too high relative to its pressure in a steam table. Computer equipment type of fire - CORECT ANSWERS -C Energized electrical equipment type of fire - CORECT ANSWERS -C Flammable liquid type of fire - CORECT ANSWERS -B Paper, wood, cloth, plastic type of fire - CORECT ANSWERS -A Total acquisition Cost - CORECT ANSWERS -All costs incurred by the facility to purchase a specific supply or equipment item from the point of authorization through its disposal. Psychrophiles - CORECT ANSWERS -Cold-loving bacteria whose optimum temperature for growth is 59*F - 68*F (15*C -20* or below. Thermophiles - CORECT ANSWERS -Bacteria which grow best at a temperature of 122*F - 158*F (50*C - 70*C) Mesophiles - CORECT ANSWERS -Bacteria that grow best at moderate temperatures: 68*F - 113*F (20*C - 45*C) A unit that measures visible light. - CORECT ANSWERS -Angstrom State of active growth of microorganisms ( as opposed to the resting or spore stages.) - CORECT ANSWERS -Vegetative stage Solutions that are administered to patients intravenously. - CORECT ANSWERS - Parenteral solutions Solutions that are normally used for irrigating, topical application, and surgical use that are given orally or by inhalation. - CORECT ANSWERS -External solutions The continual movement of water from the atmosphere to the earth and back to the atmosphere. - CORECT ANSWERS -Hydrologic cycle A water treatment process in which dissolved impurities are separated from water by forcing the water through a molecular filter membrane. - CORECT ANSWERS - Reverse osmosis The maximum density recommended for linen pack is? - CORECT ANSWERS -7.2 pounds per cubic foot of pack What would be the recommended exposure time for a Dry Heat Sterilization load that was run at an exposure temperature of 320 degrees F, (160 degrees C)? - CORECT ANSWERS -2 hours Pumps heated or cooled water through a coiled pad to therapeutically raise or lower body temperature. - CORECT ANSWERS -Hypothermia Unit Mechanically controls the administration of intravenous (IV) therapy fluids. - CORECT ANSWERS -Infusion Pump Patient-Controlled Analgesia. Provides for automatic (self) administration of pain medication. - CORECT ANSWERS -PCA Pump APIC - CORECT ANSWERS -The Association for Professionals in Infection Control and Epidemiology Procedures used by equipment manufacturers to obtain, record, and interpret test results required to establish that a process consistently produces a sterile product. - CORECT ANSWERS -Validation Procedures used by healthcare facilities to confirm that the validation undertaken by the equipment manufacturer is applicable to the specific setting. - CORECT ANSWERS - Verification ANSI - CORECT ANSWERS -(American National Standards Institute) Responsible for enhancing the quality of life by promoting standards and ensuring integrity. ISO - CORECT ANSWERS -(International Standards Organization) Represents over 156 countries What is the correct temperature and humidity for the sterile storage area? - CORECT ANSWERS -75*F(24*C); less than 70% humidity What is the correct temperature and humidity in the decontamination area? - CORECT ANSWERS -60*- 65*F(16*-18*C); 30-60% humidity What is the correct temperature and humidity in the packaging and processing area? - CORECT ANSWERS -68*- 73*F(20*-23*C); 30-60% humidity List the water temperature for enzymatic detergents. - CORECT ANSWERS -109*- 140*F Describe simultaneous wrapping. - CORECT ANSWERS -Using two layers of wrap at the same time to wrap an item at one time. Which component of the sterilizer is responsible for heating up the chamber? - CORECT ANSWERS -Jacket List the four phases of the steam sterilization cycle. - CORECT ANSWERS -Exhaust, conditioning, exposing(sterilizing), drying. List the parameters for effective steam sterilization. - CORECT ANSWERS -Time, temperature, steam under pressure. How many spores are in a biological indicator? - CORECT ANSWERS -one million 1 List three parameters for ethylene oxide sterilization. - CORECT ANSWERS - Temperature, humidity, exposure time, gas concentration, pressure. Identify the organism used to biologically test dry heat. - CORECT ANSWERS - Bacillus atrophaeus What is another name for a PAR-level distribution system? - CORECT ANSWERS - Fixed-inventory system What is another name for a stockless distribution system? - CORECT ANSWERS - Just-In-Time (JIT) A distribution system designed specifically for dialysis patients? - CORECT ANSWERS -Specialty cart Which type of distribution system uses two identical carts that can be distributed to different units? - CORECT ANSWERS -Exchange cart system In what type of distribution system is the patient directly charged? - CORECT ANSWERS -Demand Which of the following tracking methods provides real time information? - CORECT ANSWERS -RFID The method of wrapping that creates a package within a package is called? - CORECT ANSWERS -Sequential 400 series stainless steel is also called? - CORECT ANSWERS -Martensitic Cellulosic material (paper, cotton and linen) cannot be processed in a/an? - CORECT ANSWERS -hydrogen peroxide gas plasma sterilizer In an ABC Inventory Control system, " A items represent? - CORECT ANSWERS -the smallest number of items and largest dollar value A system that keeps track of all incoming and outgoing supplies so that quantities of supplies in storage are known at all times, is? - CORECT ANSWERS -perpetual inventory system The act of withdrawing supplies from storage for transfer to areas where they will be used? - CORECT ANSWERS -Issue The difference between the amount of a supply that should be available (from records) and the amount that is available (from physical count) when a perpetual inventory system is used? - CORECT ANSWERS -Varience The most effective type of dry heat sterilizer is? - CORECT ANSWERS -mechanical convection sterilizer Biological testing should be performed in an ethylene oxide sterilizer? - CORECT ANSWERS -in every load What percentage of microorganisms are harmful to humans because they can grow at approximately human temperature? - CORECT ANSWERS -1% What type of hepatitis virus is important in food-borne illness? - CORECT ANSWERS -A Phenolics are often used to disinfect? - CORECT ANSWERS -noncritical items Which of the following should not be processed in an ultrasonic cleaner? - CORECT ANSWERS -plastic instruments Items requiring manual cleaning should be? - CORECT ANSWERS -Cleaned per manufactures instructions The distribution system used to provide specific products for individual surgical procedures is a? - CORECT ANSWERS -case cart system What is the ph level for neutral water? - CORECT ANSWERS -7 What is the ph level for purified water? - CORECT ANSWERS -6.5 - 7.5 How many parts per million (ppm) are acceptable for a person to be exposed to EtO in a TWA? - CORECT ANSWERS -1 ppm and 0.5 ppm action level (AL) of EtO/8hr TWA The process by which Ethylene Oxide destroys microorganisms, resulting in the inability of the cell to normally metabolize, reproduce, or both. - CORECT ANSWERS - Alkylation The act or process of : the chemical breakdown of nutrients. - CORECT ANSWERS -Oxidation Convert fahrenheit to celsius - CORECT ANSWERS -subtract 32 and multiply by .5556 Convert celsius to farenheit - CORECT ANSWERS -multiply by 1.8 then add 32