NGR 6993 Technology in Anesthesiology Nursing

Gas Analysis

Why Monitor Gases?

• Standards• Equipment status monitor• Patient status monitor

What gases are monitored?

• Oxygen• Carbon dioxide• Nitrous oxide• Nitrogen• Anesthetic agent• Inspired Concentration• Expired Concentration

Oxygen Analyzer

What other O2 monitors are used?

Agent Analyzers

End-tidal CO2

•Production•Mobilization•Elimination

Capnometer

• ventilation must be sufficient to carry oxygen into the lungs • oxygen is being transported to the mitochondria (CV function) • aerobic metabolism is consuming this oxygen and producing CO2 • CO2 is being transported to the lungs (CV function) • CO2 in the expired air gives an indication of adequate ventilation

What it tells you

What it doesn’t tell you

Does not tell about regional blood flow, cerebral or cardiac ischemia can occur with normal ET CO2.

End-tidal CO2 Monitor

End-tidal CO2 Monitor

Portable Capnography

Portable Capnography

Colormetric ETCO2 Detector

CO2 Sampling via N/C

CO2 Sampling via N/C

CO2 Sampling via N/C

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