Capnograph Waveforms Flashcards
What is occurring in this waveform?
Mechanical ventilation
What is occurring in this waveform?
Spontaneous ventilation
What is occurring in this waveform?
Inadequate seal around the ET tube
What is occurring in this waveform?
Faulty inspiratory valve
What is occurring in this waveform?
Sample line leak
What is occurring in this waveform?
Hyperventilation
What is occurring in this waveform?
Hypoventilation
What is occurring in this waveform?
Airway obstruction
The shark-fin appearance is a classic graphical sign of airway obstruction
What is occurring in this waveform?
Cardiac oscillations
common in pediatrics
What is occurring in this waveform?
Rebreathing from soda lime exhaustion
be VERY careful here, this looks very similar to faulty inspiratory valve, the key difference is the faulty inspiratory valve has that 90-degree angle right before phase 0 ends, that angle is absent here
What is occurring in this waveform? What is the name of the distinctive pattern before the beta angle?
NMBD’s are wearing off, the notch is the curare cleft
What is occurring in this waveform?
Over breathing, the normal ventilator breaths are here, the waveform in between them is a patient spontaneous breath
Assuming the patient is currently hemodynamically stable, and has received anesthetics/paralytics, what would be a reasonable explanation for this waveform?
Esophageal intubation
What is #1?
The respiratory baseline, phase I
What is #2?
The expiratory upstroke or phase II
What is #3?
The alpha angle
What is #4?
The alveolar plateau or phase III
What is #5?
The beta angle
What is #6?
Where ETCO2 is measured
What is #7?
The inspiratory downstroke or phase 0 (some textbooks have it labeled as phase IV)
