Oxygen Treatment - Equipment And Scenarios

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Oxygen Treatment - Equipment And Scenarios

I must admit that it is pretty hard to cover this material in a multiple-choice test, so a lot of the questions may seem awkward and will end up being easier than if you had to write in the answers. Be sure to read the explanations as there might be some good info in there; I try to go through everything fairly thoroughly.


Questions and Answers
  • 1. 
    Okay, let's start with some basic equipment.  You have a regulator containing a Bourdon gauge flowmeter.  What type of reducing valve is employed in this regulator?
    • A. 

      Preset Reducing Valve

    • B. 

      Flow Restrictor Valve

    • C. 

      Adjustable Reducing Valve

    • D. 

      Multi-Stage Reducing Valve

  • 2. 
    Sticking with the bourdon (maybe I like it because it looks like bourbon), some idiot has crimped the patients air line.  What might be an outcome of this?
    • A. 

      Watch out for the pulmonary embolus!

    • B. 

      Pressure could read falsely high or still show flow even though air was not flowing.

    • C. 

      After un-kinking the line, tank has to be flipped over.

    • D. 

      AOTA

  • 3. 
    One more flowmeter question and then we are on to bigger and better things.  What exactly is the difference between pressure compensated and non-compensated thorpe tubes?
    • A. 

      Needle valve location in respect to thorpe tube

    • B. 

      Made to handle different pressures

    • C. 

      Non-compensated will false-read low with added downstream backpressure

    • D. 

      More than 1 answer is correct

  • 4. 
    Let's start off with a quick question about Z-man's favorite apparatus:  nasal cannula.  What is the approximate (max) fiO2 of a nasal cannula at 2 L/min?
    • A. 

      20-21%

    • B. 

      40-41%

    • C. 

      24-25%

    • D. 

      28-29%

    • E. 

      None of the above options are anywhere near correct

  • 5. 
    • A. 

      Huh?????

    • B. 

      Running venti-mask at 10L will decrease fiO2

    • C. 

      Not enough flow to meet demands,

    • D. 

      There is nothing wrong with this scenario

  • 6. 
    Now for some scenarios that are admittedly very similar to Rose's.  Hopefully also very similar to what is on the test.Patient is on a 40% air-entrainment mask setup and the Dr. orders 65% fiO2.  Whatcha gonna do?
    • A. 

      Crank it up!!

    • B. 

      Transfer the patient to partial rebreather mask

    • C. 

      Transfer the patient to non-rebreather mask

    • D. 

      Transfer the patient to another floor and let them deal with it

    • E. 

      Transfer the patient to a nebulizer mask

  • 7. 
    Patient on simple O2 mask at 3L/min.  Dr.'s order states O2 at 3L/min.  So.....
    • A. 

      So what, is this some kind of trick question?

    • B. 

      Switch the patient to a nasal cannula

    • C. 

      Switch the patient to a partial rebreather mask

    • D. 

      Switch the patient to a nebulizer

  • 8. 
    Trauma patient just arrived cyanotic, severe dyspnea, and is providing copious amounts of frothy pink sputum, Dr. has noted likely pulmonary edema and ordered 60% O2 while the patient is being stabilized and further assessed.  What device are you going to want to use here?
    • A. 

      Nonrebreathing mask

    • B. 

      Nebulizer

    • C. 

      Air-entrainment mask

    • D. 

      Nasal cannula

  • 9. 
    Patient is in respiratory distress with BP 160/100 resp. rate 32bpm, O2sat is 84%.  Doctor orders O2 to maintain saturation over 90%.  What now?
    • A. 

      Nasal cannula at 4L

    • B. 

      Partial rebreather mask

    • C. 

      Non rebreather mask

    • D. 

      Venti-mask

  • 10. 
    Patient is on 28% fixed via venti mask, but is eating and talking with his family with the mask removed.  After a couple hours the patient starts to act irritated and slightly disoriented.  As you stop in to tell him that he needs his mask on, he tells you that he is "going to shove the mask up your *** if you don't quit bothering me about it".  What should you do?
    • A. 

      Try to persuade the patient to use a cannula at 2-3L while he wants to talk and eat

    • B. 

      Quit -- you don't need this aggravation.

    • C. 

      Make him put the mask on -- don't take no for an answer.

    • D. 

      Paralyze him, and then see how he feels.

    • E. 

      Wait for him to either comply or pass out, at which point you can put it on him without resistance

  • 11. 
    Let's try something different.  Select the approximate range of fiO2 for a nasal catheter by checking the box next to the low number, and the box next to the high number.
    • A. 

      21%

    • B. 

      22%

    • C. 

      24%

    • D. 

      28%

    • E. 

      35%

    • F. 

      40%

    • G. 

      45%

    • H. 

      50%

  • 12. 
    That was fun!  Now let's do the same thing for a simple mask.  Remember to click on 2 boxes, both the low and the high of the range.FiO2 range of simple mask ____ to _____.
    • A. 

      21%

    • B. 

      24%

    • C. 

      28%

    • D. 

      32%

    • E. 

      35%

    • F. 

      40%

    • G. 

      50%

    • H. 

      60%

    • I. 

      70%

    • J. 

      80%

  • 13. 
    All of this variability is getting me restless.  Mediate with me a moment on what the differences are between a variable and fixed oxygen device.......ah, isn't that enlightening?  Now what is it exactly that makes a difference between a variable and fixed device.  Remember to check any that are correct.
    • A. 

      A fixed device provides for all patient demands (with adequate flow) at that fiO2.

    • B. 

      A variable device allows you to change fiO2 on the fly.

    • C. 

      A fixed device is only able to provide one fiO2 value.

    • D. 

      A variable device's fiO2 will be largely determined by the patient's O2 demands.

    • E. 

      Increased tidal volume and respiratory rate will cause fiO2 to drop with a variable device

    • F. 

      Increased tidal volume and respiratory rate will cause fiO2 to rise with a variable device

    • G. 

      Fixed devices shouldn't be used on COPD patients due to hypoxic drive in some patients.

  • 14. 
    One more thing about fixed devices and we will move on.  Which of the following fixed devices are able to provide a 100% FiO2?  More than 1 answer may be correct.
    • A. 

      Simple mask

    • B. 

      Nonrebreathing mask

    • C. 

      Nonrebreathing circuit

    • D. 

      Air Entrainment mask (venti mask)

    • E. 

      Air Entrainment Nebulizer

    • F. 

      Blending system

    • G. 

      Oxyhood enclosure

  • 15. 
    • A. 

      Nebulizer mask

    • B. 

      Non-rebreathing mask

    • C. 

      Blender system

    • D. 

      Non-rebreathing circuit

  • 16. 
    Dr. orders O2 at 31%.  What device do you want to use?
    • A. 

      Nasal Cannula

    • B. 

      Simple Mask

    • C. 

      Partial Rebreather Mask

    • D. 

      Venti Mask

  • 17. 
    Let's spend some time with the Non-Rebreather Mask.What is the fiO2 range of this mask?  Remember to select the low and the high number of the range.
    • A. 

      21%

    • B. 

      25%

    • C. 

      35%

    • D. 

      50%

    • E. 

      60%

    • F. 

      70%

    • G. 

      80%

    • H. 

      90%

    • I. 

      100%

  • 18. 
    The Non-Rebreather mask is a fixed device capable of providing high fiO2.
    • A. 

      True

    • B. 

      False

  • 19. 
    The only difference between the Non-Rebreather and Partial Rebreather masks are that the Non-Rebreather does NOT have valves.
    • A. 

      True

    • B. 

      False

  • 20. 
    To finish up on this device, what is the flow range of the non-rebreather mask?  May not be exact depending on what you are looking at, but the range will be close.
    • A. 

      1-8 L/min

    • B. 

      5-10 L/min

    • C. 

      5-15 L/min

    • D. 

      8-15L/min

    • E. 

      12-15L/min

  • 21. 
    What do you think this is?    
    • A. 

      A mask....duhhhh

    • B. 

      Venti-mask

    • C. 

      Non-Rebreather Mask

    • D. 

      Simple mask

    • E. 

      Nebulizer mask