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Updated: Jun 6, 2026
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Combining Volumetric Capnography And Barometric Plethysmography To Measure The Lung Structure-function Relationship
Published on: January 8, 2019
Using the capnograph to confirm lung isolation when using a bronchial blocker
Marc D Fisicaro1, David P Maguire, Valerie E Armstead
1Department of Anesthesiology, Thomas Jefferson University/Jefferson Medical College, Philadelphia, PA 19107-5092, USA.
Journal of Clinical Anesthesia
|November 9, 2010
Summary
A new capnographic monitoring method reliably confirms lung isolation during thoracic surgery. This technique uses the bronchial blocker
Area of Science:
- Anesthesiology
- Thoracic Surgery
- Respiratory Monitoring
Background:
- Lung isolation is crucial for thoracic surgery.
- Current methods for confirming lung isolation can be complex or costly.
- Endotracheal tube and bronchial blocker are standard.
Observation:
- Capnographic monitoring of the bronchial blocker's central lumen was utilized.
- The technique assesses carbon dioxide (CO2) waveforms during balloon inflation.
Findings:
- Lung isolation is confirmed when normal respiratory CO2 variation changes to a persistent plateau waveform.
- This method offers a reliable and inexpensive confirmation.
Implications:
- Simplifies confirmation of lung isolation.
- Enhances patient safety during thoracic procedures.
- Provides a cost-effective monitoring solution.
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