Capnography Waveforms
Sudden loss of waveform
• ET tube disconnected, dislodged, kinked or obstructec
• Loss of circulatory function
Decreasing EtCO2
• ET tube cuff leak
• ET tube in hypopharynx
• Partial obstruction
CPR Assessment
• Attempt to maintain minimum of 10mmHg
Sudden increase in EtCO2
• Return of spontaneous circulation (ROSC)
Bronchospasm ("Shark-fin" appearance)
• Asthma
• COPD
Hypoventilation
Hyperventilation
Decreased EtCO2
• Apnea
• Sedation
#Diagnosis #CriticalCare #Capnography #Waveforms #Interpretation #ETCO2 #EndTidalCO2 #pulmonary
