Aneurysmal Oscillation of the Capnogram: A Case Report
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Updated: Sep 30, 2025

Evaluation of Capnography Sampling Line Compatibility and Accuracy when Used with a Portable Capnography Monitor
Published on: September 29, 2020
Kulbhushan Saini1, Avneet Singh1, Anand Kumar Mishra2
1From the Departments of Anesthesia and Intensive Care.
Abstract:
Variations in the alveolar plateau phase of the capnogram are often confused with spontaneous breathing efforts in an intubated patient. The oscillations in the capnogram due to a large ascending thoracic aneurysm are a separate entity from cardiogenic oscillations, and can be an indicator of underlying bronchial or lung compression.
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