Document Detail

Effect of positional change and inhalant anesthesia on parameters of acoustic reflectometry.
MedLine Citation:
PMID:  12907048     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: Purpose of this study was to find out the effect of positional change and inhalant anesthesia on acoustic reflectometry (AR) parameters (reflectivity and curve angle). METHOD: AR parameters were measured on 58 ears with otitis media in sitting position before anesthesia and in supine position under inhalant anesthesia, subsequently. RESULTS: Under anesthesia, ears with effusion disclosed more changes in reflectivity (Chi-squared analysis, chi2-test; P<0.05) and curve angle (P>0.1) than those without effusion. Further, inhalant anesthesia caused more changes in the false negative ears (63.63%) than in those with effusion having positive test before anesthesia (12.90%) (P<0.001). CONCLUSIONS: From the data of this study, it could be said that reflectivity shows changes according to the amount of effusion which is in contact with the tympanic membrane under anesthesia, and that curve angle becomes more sensitive to detect effusion when anesthetic gas diffuses into the middle ear with effusion, probably due to the pushing of effusion towards the tympanic membrane.
M B Uğur; Yusuf K Kemaloğlu; A Ceylan; S Boynueğri; A Babacan; N Gŏksu
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  International journal of pediatric otorhinolaryngology     Volume:  67     ISSN:  0165-5876     ISO Abbreviation:  Int. J. Pediatr. Otorhinolaryngol.     Publication Date:  2003 Sep 
Date Detail:
Created Date:  2003-08-08     Completed Date:  2004-01-05     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  8003603     Medline TA:  Int J Pediatr Otorhinolaryngol     Country:  Ireland    
Other Details:
Languages:  eng     Pagination:  943-6     Citation Subset:  IM    
Department of ENT-HNS, Faculty of Medicine, Gazi University, Ankara, Turkey.
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MeSH Terms
Anesthesia, Inhalation*
Anesthetics, Inhalation / pharmacology
Child, Preschool
Ear, Middle / drug effects*
Nitrous Oxide / pharmacology
Otitis Media with Effusion / diagnosis*,  physiopathology
Reflex, Acoustic*
Sensitivity and Specificity
Tympanic Membrane / drug effects*
Reg. No./Substance:
0/Anesthetics, Inhalation; 10024-97-2/Nitrous Oxide

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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