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Optional, Advanced EMT

Capnography/ End-tidal CO 2 Monitoring. Optional, Advanced EMT. 1. Understand what capnography is and how it is obtained 2. Know the purpose of end-tidal monitoring 3. Know the different types of carbon dioxide detectors Colorimetric, Capnometry, and Capnography

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Optional, Advanced EMT

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  1. Capnography/ End-tidal CO2 Monitoring Optional, Advanced EMT

  2. 1. Understand what capnography is and how it is obtained 2. Know the purpose of end-tidal monitoring 3. Know the different types of carbon dioxide detectors Colorimetric, Capnometry, and Capnography 4. Have an understanding of each type of detector and the readings it provides 5. Understand field uses for capnography Course Objectives

  3. Capnography is the measurement of carbon dioxide in exhaled air Capnography is made possible by end-tidal carbon dioxide detectors Purpose: Help confirm proper ET tube placement Reveal inadvertent esophageal placement Can also be used in non-intubated patients Used to help monitor breathing patterns of patients with respiratory illness/problems Capnography

  4. Types of Carbon Dioxide Detectors • Chemical based • Colorimetric • Electronic • Capnometry • Capnography • Electronic sensors are similar to pulse oximetry • Uses infrared light and sensors to measure CO2

  5. Colorimetric • Placed between ET tube and BVM • Disposable device • Contains chemical indicator that is sensitive to carbon dioxide • Changes colors to indicate success • Yellow/Gold (Yes it’s in the trachea) • Tan (Think about it, it may not be properly placed) • Purple (Problem, ET tube is not placed properly) • Colorimetric is only used for short periods of time • Colorimetric will give false readings in vomitus or if tube is in esophagus and they just had carbonation

  6. Colorimetric Devices

  7. Capnometry • Simple electric device • Probe is placed between ET tube and BVM • Displays numeric value of exhaled CO2 • Changes are observed over time • Goal is to maintain readings between 35-45 mm Hg

  8. Capnography • More advanced electronic device • Measures end-tidal CO2 and records a wave form • Provides visual display of rate, depth, and effectiveness of patient’s ventilations • Similar to pulse oximetry wave forms • Also gives numeric reading (35-45) • Can be used on non-intubated patients Capnography wave forms should be constant and show a steady inspiratory and expiratory phase, as shown here.

  9. Capnography Monitors • Usually included in defibrillator monitors such as Lifepak, Zoll, or Phillips

  10. Intubated sensors typically go between ET tube and BVM, then to monitor Sensors for non-intubated patients are usually a nasal cannula devise Capnography Sensors

  11. Field Uses for Capnography • During resuscitation- can show effectiveness of CPR • An increase in end-tidal CO2 is related to effective perfusion during chest compressions • Helps verify correct placement of ET tube • Also used in non-intubated patients • Used to monitor patients with respiratory illness/problem • Asthma, COPD, Inadequate breathing, hypo/hyper ventilation • Used to monitor effectiveness of EMS treatments

  12. Each student will have a pre-intubated patient You will be required to first place a colorimetric device to confirm ET tube placement You will then state the color you would hope to see and why Then you will use a capnometry device or a capnography device Then again describe the results you would hope to see on the device and what results you want to maintain Skill Overview

  13. Capnography is the measurement of carbon dioxide in exhaled air and is made possible by end-tidal CO2 detectors Capnography’s purpose is to help confirm ET tube placement, it can also be used on non-intubated patients for monitoring respirations Colorimetric, capnometry, and capnography are all types of end-tidal CO2 detection Colorimetric is a chemical based sensor that changes different colors from CO2 levels Yellow (yes), Tan (think), Purple (problem) Summary

  14. Summary cont. • Capnometry comes from a simple electric device that provides a numerical reading • Remember between 35-45 mm Hg • Capnography devices are more complex and provide a wave form that shows depth, rate, and effectiveness of patient ventilations; also provides numerical reading (35-45 mm Hg) • Capnography can be used during resuscitation to see perfusion; to help confirm ET placement; and in non-intubated patients with respiratory illness/problem

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