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Updated: Jul 23, 2026
07:52
Expired CO2 Measurement in Intubated or Spontaneously Breathing Patients from the Emergency Department
Published on: January 29, 2011
Tissue PCO2 as universal marker of tissue hypoxia.
1Institute of Critical Care Medicine, Palm Springs 92262-5309, USA.
Minerva Anestesiologica
|August 31, 2000
Summary
This review explores how tissue carbon dioxide pressure (PCO2) relates to tissue perfusion. It details the application of gastric tonometry and sublingual tonometry for assessing these physiological parameters.
Area of Science:
- Physiology
- Critical Care Medicine
Background:
- Tissue perfusion is crucial for cellular oxygenation and metabolic waste removal.
- Impaired tissue perfusion can lead to organ dysfunction and failure.
- Monitoring tissue perfusion is essential in managing critically ill patients.
Purpose of the Study:
- To review the relationship between tissue carbon dioxide pressure (PCO2) and tissue perfusion.
- To describe the methodologies of gastric tonometry and sublingual tonometry.
- To highlight the clinical relevance of these monitoring techniques.
Main Methods:
- Review of existing literature on tissue PCO2 and perfusion.
- Description of gastric tonometry principles and application.
- Description of sublingual tonometry principles and application.
Main Results:
- Tissue PCO2 is a sensitive indicator of tissue perfusion status.
- Gastric tonometry provides a non-invasive method to estimate splanchnic perfusion.
- Sublingual tonometry offers insights into peripheral tissue perfusion.
Conclusions:
- Tissue PCO2 monitoring, using methods like gastric and sublingual tonometry, is valuable for assessing tissue perfusion.
- These techniques can aid in the early detection and management of perfusion abnormalities.
- Further research may elucidate broader applications in critical care.
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