| The effect of tracheal tube size on air leak around the cuffs. | |
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MedLine Citation:
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PMID: 21860747 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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BACKGROUND: This randomized single-blinded, cross-over study was done to evaluate the influence of the size of tracheal tubes on air leaks around the cuffs. METHODS: In a benchtop model, the number of longitudinal folds on the cuffs was evaluated for different sizes of tracheal tubes. In an anesthetized patient study, thirty patients scheduled for elective surgery under general anesthesia were included. After induction of anesthesia, the trachea was intubated with two sizes of tracheal tubes in a random sequence: in men, internal diameter of 7.5 mm and 8.0 mm; in women, internal diameter of 7.0 mm and 7.5 mm. After tracheal intubation with each tube, air leak pressures were evaluated at intracuff pressures of 20, 25 and 30 cmH(2)O by auscultation. To calculate the tracheal tube resistance (R), an inspiratory pause of 20% was applied and the resulting peak airway pressure (P(peak)), plateau pressure (P(pl)) and mean expiratory tidal volume (Flow) were inserted in the formula R = (P(peak) - P(pl))/Flow. RESULTS: More longitudinal folds of the tracheal tube cuffs occurred in larger sized tubes compared to the smaller ones in a benchtop model. Air leakage was significantly less for the smaller tracheal tubes than for the larger ones for each gender at intracuff pressures of 20, 25 and 30 cmH(2)O. Tracheal tube resistances were not significantly altered by the size of tracheal tube. CONCLUSIONS: The use of a smaller tracheal tube within an acceptable size can reduce air leakage around the cuff without significantly changing the tracheal tube resistance. |
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Authors:
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Jin-Young Hwang; Sang-Hyun Park; Sung-Hee Han; Seong-Joo Park; Soo-Kyung Park; Jin-Hee Kim |
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Publication Detail:
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Type: Journal Article Date: 2011-07-21 |
Journal Detail:
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Title: Korean journal of anesthesiology Volume: 61 ISSN: 2005-7563 ISO Abbreviation: Korean J Anesthesiol Publication Date: 2011 Jul |
Date Detail:
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Created Date: 2011-08-23 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101502451 Medline TA: Korean J Anesthesiol Country: Korea (South) |
Other Details:
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Languages: eng Pagination: 24-9 Citation Subset: - |
Affiliation:
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Department of Anesthesiology and Pain Medicine, Seoul National University Bundang Hospital, Seongnam, Korea. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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