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Updated: Mar 15, 2026

Expired CO2 Measurement in Intubated or Spontaneously Breathing Patients from the Emergency Department
Published on: January 29, 2011
Monitoring Exhaled Carbon Dioxide.
1BSRC Program, Skyline College, San Bruno, California. Mr Siobal has disclosed relationships with Aerogen, Sunovion, and Mallinckrodt. siobalm@smccd.edu.
Exhaled carbon dioxide (CO2) monitoring is crucial for patient safety and provides vital physiologic data. This review highlights its underutilization and advocates for broader clinical application.
Area of Science:
- Medical Monitoring
- Respiratory Physiology
- Critical Care Medicine
Background:
- Exhaled CO2 monitoring is integral to patient care in both intubated and non-intubated individuals.
- It offers insights into ventilation, perfusion matching, cardiac output, and metabolic rate.
- Despite its benefits, this monitoring tool is frequently underused in clinical settings.
Purpose of the Study:
- To review the significance of exhaled CO2 monitoring.
- To present evidence supporting its use across diverse clinical practices.
- To discuss advanced applications and future directions.
Main Methods:
- Literature review of exhaled CO2 monitoring applications.
- Synthesis of existing knowledge on clinical benefits.
- Exploration of advanced concepts and future trends.
Main Results:
- Exhaled CO2 monitoring provides essential patient safety and physiologic data.
- The technology is widely available but often underutilized.
- Extensive data supports its application in various clinical scenarios.
Conclusions:
- Exhaled CO2 monitoring is an underutilized yet vital tool.
- Increased adoption can enhance patient safety and clinical decision-making.
- Further exploration of advanced applications is warranted.
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