Linked Life Data

9859906

Source:http://linkedlifedata.com/resource/pubmed/id/9859906

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
1999-2-18
pubmed:abstractText
In this preliminary laboratory study, an acoustical method was evaluated to quantitatively assess the position and patency of an infant-size endotracheal tube (ETT) by in vivo and in vitro measurements. The method consists of emitting an audible sound pulse into the ETT and the airways, and deriving position and patency information from the timing and characteristics of the returning echoes. The method's capacity to measure ETT changes of position in the tracheae of five anesthetized New Zealand white rabbits (weight, 4.3-4.9 kg; age, 1.5-3 years) was found to be accurate to 0.7 +/- 3.6 mm (mean +/- 95% CI) over a distance of 5 cm. The method was also shown to reliably differentiate between tracheal, bronchial, and esophageal intubations by means of an acoustically inferred diameter of the passageway just beyond the ETT tip. To assess the accuracy of estimating lumen obstruction, in vitro acoustical measurements were performed in different size ETTs (2.5, 3.0, 3.5, and 4.0 mm inner diameter), with obstructions ranging from 5-100% reduction in cross-sectional area. The system identified the sizes of these obstructions to within +/-7%. This technology has the potential for continuous, computer-based monitoring of breathing-tube function through instantaneous detection of ETT malposition or obstruction before it leads to a serious medical condition.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
8755-6863
pubmed:author
pubmed:issnType
Print
pubmed:volume
26
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
354-61
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1998
pubmed:articleTitle
Acoustic method to quantitatively assess the position and patency of infant endotracheal tubes: preliminary results in rabbits.
pubmed:affiliation
School of Electrical and Computer Engineering and Hillenbrand Biomedical Engineering Center, Purdue University, West Lafayette, Indiana 47907-1285, USA.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't