Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1996-2-28
pubmed:abstractText
We measured the hypopharyngeal pH to compare the incidence of regurgitation associated with the laryngeal mask airway (LMA) and the tracheal tube (TT) in spontaneously breathing, anesthetized patients. Sixty outpatients scheduled for elective peripheral surgery with a standardized general anesthetic technique were randomly allocated to receive either a LMA (n = 28) or a TT (n = 32) for airway management. A 4-mm pH electrode was placed in the hypopharynx, and pH values were continuously collected and stored in a portable pH data logger system until the end of the operation. There were no episodes of hypopharyngeal regurgitation (pH < 4) detected during the course of measurement. At no time did the hypopharyngeal pH value decrease below 5.5. The hypopharyngeal pH values in both groups were similar, ranging between 5.5 and 7.5, with median values of 5.7 and 6.2 in the LMA and TT groups, respectively. The pH in any given patient did not vary more than 1.0 unit from the initial value recorded at the start of the operation. We conclude that continuous monitoring of the hypopharyngeal pH in spontaneously breathing, anesthetized outpatients failed to detect evidence of pharyngeal regurgitation.
pubmed:commentsCorrections
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0003-2999
pubmed:author
pubmed:issnType
Print
pubmed:volume
82
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
254-7
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1996
pubmed:articleTitle
Continuous hypopharyngeal pH measurements in spontaneously breathing anesthetized outpatients: laryngeal mask airway versus tracheal intubation.
pubmed:affiliation
Department of Anesthesiology and Pain Management, University of Texas Southwestern Medical Center, Dallas 75235-9068, USA.
pubmed:publicationType
Journal Article, Clinical Trial, Comparative Study, Randomized Controlled Trial