2012
DOI: 10.4187/respcare.01747
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Abstract: In tracheotomized difficult to wean subjects the decrease of the tracheotomy tube size was associated with an increased PTP(di), f/V(T), and TT(di), that were otherwise normal, using a higher diameter. The in vitro study showed that the resistances increased similarly for tracheotomy tube and endotracheal tube, decreasing the diameter and increasing the flows.

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Cited by 10 publications
(14 citation statements)
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“…This is marginally higher than reported previously. 9,12 The largest inner aperture of tubes used in our study was 8 mm, and earlier models have shown that tube resistance does not drop below normal airway resistance until the inner diameter is 8.5-9.4 mm. 20 Our tube choice, however, was based on the clinical predominance of the size 8 tube in the participating hospital and other published research.…”
Section: Discussionmentioning
confidence: 62%
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“…This is marginally higher than reported previously. 9,12 The largest inner aperture of tubes used in our study was 8 mm, and earlier models have shown that tube resistance does not drop below normal airway resistance until the inner diameter is 8.5-9.4 mm. 20 Our tube choice, however, was based on the clinical predominance of the size 8 tube in the participating hospital and other published research.…”
Section: Discussionmentioning
confidence: 62%
“…10,12 All tracheostomy tubes caused greater resistance to air flow than a native upper airway in this study, but importantly, the imposed resistance was high in the majority of double-lumen tubes at clinically relevant flows. Although the clinical impact of changes in tube resistance cannot be directly determined from this bench model analysis, it can be theorized that the greater the inspiratory resistance through the tube, the greater the inspiratory effort required by the patient to overcome this resistance during a spontaneous or supported breath.…”
Section: Discussionmentioning
confidence: 73%
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