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End Title CO2 Monitoring

End Title CO2 Monitoring. Capnography By Gary Cross. Infrared Capnometer. CO2 absorbs infrared light transmitter receiver difference. Two Types. Mainstream Sidestream. Patient interface. ET tube 15mm Nasal cannula adapter. Mainstream Capnography Sensor. Mainstream. Advantages

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End Title CO2 Monitoring

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  1. End Title CO2 Monitoring Capnography By Gary Cross

  2. Infrared Capnometer • CO2 absorbs infrared light • transmitter • receiver • difference

  3. Two Types • Mainstream • Sidestream

  4. Patient interface • ET tube 15mm • Nasal cannula adapter

  5. Mainstream Capnography Sensor

  6. Mainstream • Advantages • Response time • Disadvantages • weight on ET tube

  7. Sidestream

  8. Sidestream • Advantages • Light weight on airway • disadvantages • thin tube, blocked with water and mucus • delay time in sample rate

  9. Calibration • CO2 calibration gas • 0% • 5% • Barometric Pressure • adjust partial pressure

  10. Where it’s used • Anesthesia • every patient • ECG • Pulse ox • ICU • a little • misapply

  11. Basic Shape at 12.5 mm/sec

  12. End Tidal Value

  13. Exhale PQR, Inhale RS

  14. Segments • PQ rapid increase • Plateau QR nearly horizontal • slight increase • R end tidal value • Equivalent to Alveolar CO2 • (ONLY when horizontal plateau) • RS begin inspiration

  15. Inhale

  16. Trend Speed 25 mm/min

  17. Normal Waveform

  18. Different than Normal • Some based on patients sedated in Operating Room • Anesthesia • Rebreathing circuit

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