Technology Quiz Over Breathing Circuit

139 Questions | Total Attempts: 310

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Technology Quiz Over Breathing Circuit

Review of material for exam 2. Including breathing circuits


Questions and Answers
  • 1. 
    What are the two fundamental purposes of all anesthesia breathing systems? (click two answers)
    • A. 

      Delivery of O2 & anesthetic gases.

    • B. 

      To accurately measure amount of FGF going into vaporizer

    • C. 

      To provide the perfect medium for application of Poiseuille's law

    • D. 

      Elimination of CO2

  • 2. 
    All of the following will reduce Resistance in Laminar flow except...
    • A. 

      Increasing Flow Rate

    • B. 

      Increasing Viscosity

    • C. 

      Increasing diameter of tubing.

    • D. 

      Decreasing length of tubing.

    • E. 

      Eliminating unnecessary valves

  • 3. 
    In Laminar flow resistance is ______________ to flow rate.
    • A. 

      Directly proportional

    • B. 

      Equal

    • C. 

      Indirectly Proportional

  • 4. 
    What will doubling the radius of a tube do to resistance and flow?
    • A. 

      Decrease resistance by half, increase flow 16 times

    • B. 

      Increase resistance 16 times, decrease flow 16 times.

    • C. 

      Double resistance and flow.

    • D. 

      Decrease resistance 16 times, increase flow 16 times

  • 5. 
    Which will flow faster: a 16 gauge IV or a central line? (Using poiseuilles law)
    • A. 

      The #16 IV because of larger radius and shorter length, decreasing resistance.

    • B. 

      The central line because you can have multiple ports, which will increase flow.

    • C. 

      The speed of infusion will be roughly equivalent due to increased length of central line and increased resistance of IV.

    • D. 

      Entirely depends upon where each line is placed.

  • 6. 
    If you half the radius of your breathing circuit what will this do resistance and flow?
    • A. 

      Decrease flow by 16, increase resistance by 2.

    • B. 

      Increase resistance by 16, decrease flow by 16.

    • C. 

      Double resistance, half flow

    • D. 

      Decrease resistance by 16, increase flow by 16.

  • 7. 
    Which of the following is not a means of classifying breathing circuits?
    • A. 

      Presence of reservoir bag

    • B. 

      Neutralization of CO2

    • C. 

      Number of vaporizers

    • D. 

      Amount of Rebreathing

  • 8. 
    A nasal cannula is an example of which kind of breathing system?
    • A. 

      Semi Closed

    • B. 

      Closed

    • C. 

      Semi Open

    • D. 

      Open

  • 9. 
    Which of the following is true regarding open circuits?
    • A. 

      Partial Rebreathing.

    • B. 

      No Neutralization of CO2

    • C. 

      Presence of reservoir bag

    • D. 

      Good examply is a Mapleson D (Bain) circuit

  • 10. 
    What is the difference between an open and a semi-open system?
    • A. 

      Partial Rebreathing of gases.

    • B. 

      Neutralization of CO2.

    • C. 

      Presence of gas reservoir bag.

    • D. 

      Presence of unidirectional valves

  • 11. 
    How much FGF do you need in a semi-open system?
    • A. 

      Less than minute ventilation to encourage rebreathing.

    • B. 

      Equal to minute ventilation

    • C. 

      4L/min

    • D. 

      2-3 times minute ventilation

  • 12. 
    You are using a semi-open breathing circuit for your pt today. Your pt is breathing 500 tidal volume at 12 breaths per minute. What is the minimum amount of fresh gas flow needed to maintain a semi-open curcuit and compensate for dead space?
    • A. 

      12 L / min

    • B. 

      10 L / min

    • C. 

      5 L/ min

    • D. 

      3 L / min

  • 13. 
    When using a semi-open circuit, what happens if your FGF drops below minute ventilation?
    • A. 

      Nothing, gas flow SHOULD be below minute ventilation

    • B. 

      The system then turns into a semi-closed circuit.

    • C. 

      You run the risk of inflicting barotrauma on your pt.

    • D. 

      An alarm will sound to alert you.

  • 14. 
    What is the primary determinant of whether a system if closed, semi closed, or semi open within our breathing circuits?
    • A. 

      Presence of CO2 absorber

    • B. 

      Size of the circuit

    • C. 

      Amount of Fresh Gas Flow

    • D. 

      Ability to add PEEP into circuit

  • 15. 
    Which of the following is NOT a characteristic of a semi-closed circuit?
    • A. 

      Always provides for neutralization of CO2

    • B. 

      Contains unidirectional valves

    • C. 

      Always has a reservoir bag

    • D. 

      Allows for Total rebreathing of gases

  • 16. 
    You are using a semi-closed system, and want to determine how much FGF to use. Your pt is breathing 600 Tv at 10 breaths per minute. How much FGF would be appropriate to maintain your semi-closed circuit?
    • A. 

      4 L / min

    • B. 

      12 L /min

    • C. 

      ~ 150 ml / min

    • D. 

      6 L / min

  • 17. 
    Which of the following is NOT true regarding a closed circuit?
    • A. 

      Allows for total rebreathing of gases

    • B. 

      Only to be used during controlled ventilations with open pop-off valve

    • C. 

      Always provides for neutralization of CO2

    • D. 

      Always contains unidirectional valves.

  • 18. 
    Which non-rebreathing circuit contains a Fresh gas hose inside the expiratory limb?
    • A. 

      Mapleson F (Jackson-Rees)

    • B. 

      Mapleson A

    • C. 

      Mapleson D (Bain)

    • D. 

      Mapleson C

  • 19. 
    Which type of non-rebreathing circuit is used almost exclusively in children?
    • A. 

      Mapleson A

    • B. 

      Mapleson D (Bain)

    • C. 

      Nasal Cannula

    • D. 

      Mapleson F (Jackson-Rees)

  • 20. 
    What two things do all non-rebreathing circuits lack? (two answers)
    • A. 

      Unidirectional valves

    • B. 

      Soda Lime CO2 absorption

    • C. 

      Reservoir Bags

    • D. 

      APL valves

  • 21. 
    What could you do to decrease amount of CO2 (rebreathing) in a NRB circuit?
    • A. 

      Decrease FGF

    • B. 

      High tidal volume

    • C. 

      Long Expiratory Pause

    • D. 

      Close the APL valve

  • 22. 
    Which type of circuit is most efficient during Spontaneous Ventilation?
    • A. 

      T-Piece

    • B. 

      Mapleson D

    • C. 

      Mapleson F

    • D. 

      Mapleson A

  • 23. 
    Which type of circuit is most efficient during Controlled ventilation?
    • A. 

      Mapleson D

    • B. 

      Maplseon C

    • C. 

      Mapleson A

    • D. 

      Mapleson F

  • 24. 
    Which non-invasive BP measurements are only reliable for measuring systolic BP?
    • A. 

      Oscillometry & Auscultation

    • B. 

      Palpation & Doppler

    • C. 

      Palpation & Auscultation

    • D. 

      Doppler & Tonometry

  • 25. 
    Identify the above rhythm.
    • A. 

      3rd degree heart block

    • B. 

      A Flutter

    • C. 

      2:1 AV block

    • D. 

      Long QT syndrome