CRCST Exam 99 QUESTIONS AND ANSWERS GRADED A

Classification for Sterilization Packaging Correct Answer: Class II Medical Devices (those presenting a potential risk) Packaging used for steam sterilization must be capable of withstanding high temperatures of? Correct Answer: 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. Correct Answer: Aeration Microorganism that requires the presence of air or oxygen for growth. Correct Answer: Aerobe Packaging choices for dry heat sterilization must be able to tolerate? Correct Answer: 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? Correct Answer: 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. Correct Answer: Muslin The condition that arises when steam is at a temperature which exceeds that of saturated steam at the same pressure. Correct Answer: Superheating All linen packaging materials should be held at? Correct Answer: 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. Correct Answer: SMS (spunbond-meltblown-spunbond) Sterility Maintenance Covers Correct Answer: 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 Correct Answer: 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 Correct Answer: 25 pounds