Otterbein/Grant CRNA Basics Midterm Review - Machine
- 1.The American Society for Testing and Materials Standard ______ provides guidelines for anesthesia workstations and components.
- 2.The anesthesia machine checkout is standardized by the Department of Homeland Security.
- A.
True
- B.
False
- 3.The pressure in the breathing circuit of an anesthesia machine is limited to:
- A.
14 kPa (140 cmH2O)
- B.
10 kPa (100 cmH2O)
- C.
12.5 kPa (125 cmH2O)
- D.
It is limited by the values set by the anesthetist.
- 4.One of the required components of flowmeters is:
- A.
Multiple controls for each gas.
- B.
Uniquely shaped O2 flow knob.
- C.
O2 flowmeter located to the left or upstream of the flowmeter bank.
- D.
Oxygen flowmeter knob will be blue in color.
- 5.The oxygen flush valve provides flow of oxygen directly to the breathing circuit at 35-75L/min. What else is true about utilizing O2 flush?
- A.
Should only be used during the inspiratory phase.
- B.
Increases risk of intraoperative awareness by diluting inhaled anesthetic agents.
- C.
Places patient at risk for barotrauma.
- D.
Is an optional feature that does not have to be present on all anesthesia machines.
- 6.The American Society of Anesthesiologists makes guidelines for:
- A.
Anesthesia machine checkout
- B.
Anesthesia machine obsolescence
- C.
Anesthesia backstands
- D.
Keurig's in the break room
- 7.The hanger yoke, yoke block with check valves, and the cylinder pressure gauge and regulators are part of which pressure system?
- A.
Intermediate pressure system
- B.
Low pressure system
- C.
Mapleson circuit
- D.
High pressure system
- 8.The _______ pressure system consists of everything distal to the flowmeter needle valve.
- 9.List the 5 tasks of oxygen.
- 10.In the event of a pipeline failure, what would you anticipate doing?
- A.
Open cylinders, leaving pipeline connected to the wall.
- B.
Calculate time remaining on cylinders.
- C.
Consider using ambu-bag and switching to total IV anesthesia.
- D.
Increase FGF to maximize sedation from inhaled agents.
- 11.Which pressure is lower?
- A.
Cylinder pressure after the 1st stage regulator.
- B.
Pipeline pressure.
- 12.This type of valve moves in the direction it is pushed by gas flow, preventing gas leaks from the system. An example is a check valve.
- A.
Diaphragm
- B.
Ball and spring
- C.
Free floating
- 13.The first and second stage regulators are examples of ________ valves.
- 14.An E cylinder of N2O at 745 psi contains _____ L when full.
- 15.Write the equation for the Ideal Gas Law.
- 16.What is the critical temperature of N2O in Celsius?
- 17.What is the critical temperature of O2 in Celsius?
- 18.When a compressed gas is allowed to escape freely, the process is adiabatic and cooling occurs. What is this describing?
- A.
Magic
- B.
Joule-Thompson Effect
- C.
Newton's Third Law
- D.
Pouiselle's law
- 19.This component of a medical gas cylinder only functions with excessive heat and excessive pressure.
- A.
Combination pressure relief device
- B.
Fusible plug
- C.
Rupture disc
- D.
Washer
- 20.What are hazards of central gas supplies?
- A.
Crosses pipelines
- B.
Hypoventilation
- C.
Damage to pipelines during construction
- D.
Foreign substances in pipeline
- 21.The oxygen pressure failure device aka fail-safe valve fully prevents hypoxic mixtures by sensing when oxygen flow falls to 25-26 psi.
- A.
True
- B.
False
- 22.The oxygen failure alarm:
- A.
Sounds a medium priority alarm when oxygen pressure is
- B.
Sounds a high priority alarm when oxygen pressure is
- 23.Flowmeter principles include _______ law that accounts for a pressure drop across a constriction.
- 24.You are administering 4L of N2O and 1L of O2 and 1L of air, what is your FiO2? Round to the nearest whole number.
- 25.This law describes how an increase in the speed of a fluid occurs simultaneously with a decrease in pressure or a decrease in the fluid's potential energy.
- A.
Graham's
- B.
Pouisuelle's
- C.
Laplace
- D.
Bernoulli's
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