Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/201976
Type: Artigo de periódico
Title: Effectiveness Of The Endotracheal Tube Cuff On The Trachea: Physical And Mechanical Aspects.
Author: Negro, Maira Soliani Del
Barreto, Gilson
Antonelli, Raíssa Quaiatti
Baldasso, Tiago Antônio
Meirelles, Luciana Rodrigues de
Moreira, Marcos Mello
Tincani, Alfio José
Abstract: The inflation pressure of the endotracheal tube cuff can cause ischemia of the tracheal mucosa at high pressures; thus, it can cause important tracheal morbidity and tracheal microaspiration of the oropharyngeal secretion, or it can even cause pneumonia associated with mechanical ventilation if the pressure of the cuff is insufficient. In order to investigate the effectiveness of the RUSCH® 7.5 mm endotracheal tube cuff, this study was designed to investigate the physical and mechanical aspects of the cuff in contact with the trachea. For this end, we developed an in vitro experimental model to assess the flow of dye (methylene blue) by the inflated cuff on the wall of the artificial material. We also designed an in vivo study with 12 Large White pigs under endotracheal intubation. We instilled the same dye in the oral cavity of the animals, and we analyzed the presence or not of leakage in the trachea after the region of the cuff after their deaths (animal sacrifice). All cuffs were inflated at the pressure of 30 cmH2O. We observed the passage of fluids through the cuff in all in vitro and in vivo experimental models. We conclude that, as well as several other cuff models in the literature, the RUSCH® 7.5 mm tube cuffs are also not able to completely seal the trachea and thus prevent aspiration of oropharyngeal secretions. Other prevention measures should be taken.
Citationo: Revista Brasileira De Cirurgia Cardiovascular : órgão Oficial Da Sociedade Brasileira De Cirurgia Cardiovascular. v. 29, n. 4, p. 552-8
Rights: aberto
Identifier DOI: 10.5935/1678-9741.20140096
Address: http://www.ncbi.nlm.nih.gov/pubmed/25714208
Date Issue: -1-Uns- -1
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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