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Capnography: Part II

Quiz (1 Hour credit)

  1. The normal value of end tidal CO2:
    1. Below 30 mmHg
    2. Above 50 mmHg
    3. Between 35-45 mmHg
    4. 120/80 mmHg

Use this figure to answer the following questions (2-5)

Figure 1

  1. This represents the beginning of exhalation with a rapid rise due to the mixing of dead space and alveolar air.
    1. Phase I
    2. Phase II
    3. Phase III
    4. Phase IV
  1. This represents mostly alveolar air, should have a slight rise and is known as the alveolar plateau.
    1. Phase I
    2. Phase II
    3. Phase III
    4. Phase IV
  1. This is the respiratory baseline, free of CO2 and normally 0 mmHg.
    1. Phase I
    2. Phase II
    3. Phase III
    4. Phase IV
  1. This is the inhalation of CO2 free gas, quickly returning to the baseline.
    1. Phase I
    2. Phase II
    3. Phase III
    4. Phase IV
  1. After intubating a patient you see the following waveform, what does this tell you about the tube placement?
    Figure 2
    1. Placement in the trachea
    2. Esophageal placement
    3. Hypoventilation
    4. Hyperventilation
  1. After successfully performing an drug assisted intubation you note the following waveform, what actions whould you do to correct what you see?
    Figure 3
    1. Increase ventilation rate to decrease ETCO2 levels
    2. Administer a bronchodialators or perform tracheal suctioning
    3. Decrease ventilation rate to increase ETCO2 levels
    4. Do nothing, this is normal.
  1. While treating a 56 yo male in cardiac arrest you notice that the end tidal CO2 levels are decreasing below 20 mmHg, what should you do?
    1. Make sure the chest compressions are at least 100 per minute
    2. Make sure chest compressions are at least 2 inches
    3. Change out the person performing chest compressions
    4. All of the above
  1. You are treating a 26 yo female for shortness of breath. You are unable to hear bilateral breath sounds and place the Zoll CAPNO2 mask on the patient. You observe this waveform. Which treatment would be most appropriate?
    Figure 4
    1. Hyperventilate the patient
    2. Administer Albuterol
    3. Administer Narcan
    4. Do nothing, the waveform is normal
  1. When is the use on capnography required for BCEMS?
    1. On every patient
    2. Drug overdoses
    3. Advanced airway placement
    4. It is never required