Korean J Anesthesiol.
2013 Oct;65(4):337-340. 10.4097/kjae.2013.65.4.337.
Unidirectional valve malfunction by the breakage or malposition of disc: two cases report
- Affiliations
-
- 1Department of Anesthesiology and Pain Medicine, Wonkwang University College of Medicine, Iksan, Korea.
- 2Department of Anesthesiology and Pain Medicine, Konkuk University School of Medicine, Chungju, Korea. gooddr21@naver.com
- 3Department of Anesthesiology and Pain Medicine, Presbyterian Medical Center, Jeonju, Korea.
- KMID: 2164871
- DOI: http://doi.org/10.4097/kjae.2013.65.4.337
Abstract
- Malfunction of the unidirectional valve in a breathing circuit system may cause hypercapnia from the rebreathing of expired gas, ventilation failure, and barotrauma. Capnography is a useful method for monitoring the integrity of the unidirectional valve. We experienced two cases of malfunction of a unidirectional valve which caused leakage and reverse flow, diagnosed early as a change of the capnographic waveform. One case was caused by expiratory unidirectional valve breakage. The other was caused by an incorrectly-assembled inspiratory unidirectional valve.
Keyword
- Full Text Links
-
- Actions
-
Cited
- CITED
-
- Close
- Share
-
- Similar articles
-
- Expiratory Unidirectional Valve Malfunction Detected by Capnographic Waveform Change: A case report
- Broken inspiratory valve detected by capnographic waveforms during general anesthesia: A case report
- A Report of Three Cases of Hypercarbia During General Anesthesia
- Expiratory Valve Malfunction Detected Immediately after Endotracheal Intubation: A case report
- Ventilation impairment caused by upside-down connected unidirectional valves: A case report
