ArticleThe Korean journal of internal medicine2011
Sound analysis in an in vitro endotracheal tube model.
Article in The Korean journal of internal medicine, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed, 5 citations in OpenAlex.
- Article
- Sound level analysis in endotracheal tube obstruction in spontaneous breathing and mechanical ventilation-an animal model study.Journal of clinical monitoring and computing · 2017Article
- Effect of nebulized eucalyptus on contamination of microbial plaque of endotracheal tube in ventilated patients.Iranian journal of nursing and midwifery researchArticle
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Authors and funding
10 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
BACKGROUND/
aimsComplete endotracheal tube obstruction is a medical emergency, and partial occlusion causes increased breathing rates and failure to wean off mechanical ventilation. Partial occlusion may be underestimated due to the lack of proper detection methods. We tested whether the sound of an endotracheal tube could be used to detect an endotracheal tube obstruction using an in vitro model.
methodsAn endotracheal tube was connected to a ventilator on one end and a test lung on the other. Sounds were recorded with a microphone located inside the endotracheal tube via a connector. During mechanical ventilation, we changed the endotracheal tube internal diameter from 5.0 to 8.0 mm and different grades of obstruction at different sites were used along the tube. Sound energy was compared among the different conditions.
resultsThe energy of endotracheal tube sounds was positively correlated with the internal diameter and negatively correlated with the degree of obstruction. The rate of decline in energy differed with obstruction location. When the obstruction was more distal, the rate of decline in endotracheal sound energy was more rapid.
conclusionsChanges in the sound of an endotracheal tube can be used to detect an obstruction. Further studies are needed for clinical application.
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