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Capnography Interpretation

Capnography Interpretation

Use capnography to assess ventilation and perfusion in sepsis. An abruptly flattened capnogram indicates endotracheal tube displacement. Note that a shark-fin pattern indicates bronchospasm, and phase III measures peak CO₂ (EtCO₂).

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Capnography Interpretation

Quiz • 20 Questions

Capnography Interpretation - Flashcards

Flashcards • 20 Cards

Study Notes

3 min • Summary

Materials

List of Questions20 questions
  1. Question 1
    • Hyperventilation
    • Poor perfusion
    • Bronchospasm
    • Tube dislodgement
  2. Question 2
    • Re-check SpO₂
    • Confirm ET tube placement
    • Check blood pressure
    • Increase oxygen flow
  3. Question 3
    • Pneumonia
    • Re-arrest
    • COPD
    • Hypoventilation
  4. Question 4
    • Notched plateau
    • Rapid return to baseline
    • Shark-fin pattern
    • Flat waveform
  5. Question 5
    • Bronchoconstriction
    • Normal ventilation
    • Cuff leak
    • Right mainstem intubation
  6. Question 6
    • Good perfusion
    • Hyperventilation
    • Hypoventilation or respiratory failure
    • Esophageal intubation
  7. Question 7
    • Phase III
    • Phase 0
    • Phase II
    • Phase I
  8. Question 8
    • SpO₂ reads exhaled CO₂
    • Capnography shows oxygen delivery
    • Capnography shows ventilation in real-time
    • SpO₂ responds faster
  9. Question 9
    • Cardiac arrest
    • Esophageal intubation
    • Pulmonary embolism
    • COPD
  10. Question 10
    • Hypoventilation
    • Pulmonary embolism
    • Shock
    • Hyperventilation
  11. Question 11
    • Return to baseline
    • Rise in plateau
    • Flat line
    • Sudden spike
  12. Question 12
    • Phase 0
    • Phase I
    • Phase II
    • Phase III
  13. Question 13
    • Over-sedation
    • Pneumothorax
    • Pulmonary embolism
    • Faulty BVM valve or rebreathing
  14. Question 14
    • Urine output
    • Need for glucose
    • Quality of compressions
    • Seizure activity
  15. Question 15
    • Hypoventilation
    • Normal respiration
    • Anxiety attack
    • Airway secretions interfering with the sample
  16. Question 16
    • Improved perfusion
    • Hypoventilation and sedation-induced respiratory depression
    • Hyperventilation
    • Tachypnea
  17. Question 17
    • Shark-fin waveform
    • Flat line
    • Decreased EtCO₂
    • Sudden increase in EtCO₂
  18. Question 18
    • Hypovolemia/shock
    • Flail chest
    • Open femur fracture
    • Head injury
  19. Question 19
    • Zero
    • Flat waveform
    • Normal
    • Elevated
  20. Question 20
    • Persistent low levels
    • Immediate normalization
    • Constant increase
    • Gradual rise
List of Flashcards20 flashcards
  1. Card 1
    HintThink about blood pressure and oxygen delivery.Memory TipLow EtCO₂ = poor perfusion.
  2. Card 2
    HintWhat is the most important thing to check with a flattened capnogram?Memory TipFlat line? Check the tube!
  3. Card 3
    HintWhat is a common cause for decreasing EtCO2?Memory TipFalling EtCO₂ after ROSC? Think re-arrest.
  4. Card 4
    HintThink of the shape of the waveform.Memory TipShark fin = bronchospasm symptom.
  5. Card 5
    HintWhat causes resistance to the air flow in the lungs?Memory TipSlow rise = constricted airways.
  6. Card 6
    HintThink about breathing rate and depth.Memory TipHigh EtCO₂ = poor ventilation.
  7. Card 7
    HintWhich phase shows the maximum.Memory TipPhase III = peak CO₂ reading.
  8. Card 8
    HintWhich monitors ventilation directly?Memory TipCapnography detects apnea faster.
  9. Card 9
    HintThink about diseases that cause air trapping.Memory TipCOPD = slow return to baseline.
  10. Card 10
    HintWhat is happening with breathing too fast?Memory TipFast breaths, low CO₂.
  11. Card 11
    HintWhat happens at the end of each breath?Memory TipExhale: waveform returns.
  12. Card 12
    HintWhat do we call the portion of air that doesn't participate in gas exchange?Memory TipPhase I = dead space.
  13. Card 13
    HintWhat if you're re-breathing expired CO2?Memory TipFaulty valve = high baseline.
  14. Card 14
    HintHow does CPR affect CO₂ levels?Memory TipGood compressions = higher EtCO₂.
  15. Card 15
    HintWhat is blocking the sensor?Memory TipNotches = secretions.
  16. Card 16
    HintBreathing is affected negatively how?.Memory TipRising EtCO₂ may indicate hypoventilation.
  17. Card 17
    HintWhat happens to CO₂ during intense muscle activity?Memory TipSeizure = sudden EtCO₂ increase.
  18. Card 18
    HintWhat is happening with the total blood volume?Memory TipLow volume = low EtCO₂.
  19. Card 19
    HintWhat happens to CO₂ after a seizure?Memory TipPostictal = high EtCO₂.
  20. Card 20
    HintWhat happen with levels during hard CPR?Memory TipLong CPR = persistently low EtCO₂.

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