Capnography – So Easy And Effective
Capnography can detect early phases of respiratory depression which can allow more precise and safe use of medications. Monitoring of exhaled carbon dioxide should be considered for all patients receiving medications that will potentially experience decreased respiratory rates.
The comparison between capnography and pulse oximetry:
Capnography:
Carbon Dioxide Reflects ventilation
Hypoventilation/apnea detected immediately
Reflects ventilation changes within 10 seconds
Should be used with pulse Oximetry
Pulse Oximetry:
Oxygen saturation Reflects oxygenation
SpO2 changes lag when patient is hypoventilation or apneic
Reflects changes in oxygenation with 5 minutes
Should be used with capnography
History of Capnography
Capnography used by anesthesiologists since the 1970’s and