The site of airway obstruction among patients of emphysema: Role of impulse oscillometry
<b>Objectives:</b> To detect the site of airway obstruction in patients of emphysema by impulse oscillometry (IOS) and to compare its observatios with flow volume loop (FV loop) studies. <b>Methods:</b> Twenty-five patients of emphysema were subjected to both impulse os-cil...
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| Format: | Article |
| Language: | English |
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Wolters Kluwer Medknow Publications
2008-01-01
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| Series: | Lung India |
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| Online Access: | http://www.lungindia.com/article.asp?issn=0970-2113;year=2008;volume=25;issue=1;spage=8;epage=13;aulast=Hira |
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| author | Hira H Munjal Jitendra Zachariah Sanjay Chauhan M Singh Anshu |
| author_facet | Hira H Munjal Jitendra Zachariah Sanjay Chauhan M Singh Anshu |
| author_sort | Hira H |
| collection | DOAJ |
| description | <b>Objectives:</b> To detect the site of airway obstruction in patients of emphysema by impulse oscillometry (IOS) and to compare its observatios with flow volume loop (FV loop) studies. <b>Methods:</b> Twenty-five patients of emphysema were subjected to both impulse os-cillometry (IOS) and conventional spirometry. The resulting impedance spectra by IOS and FV loop were utilized to identify the site of airway obstruction in each of the patients. Both methods applied were also compared for sensitivity to identify airway and specify the site of obstruction. <b>Results:</b> Four patients were excluded from the final analysis as their impedance spectra showed significant upper airway influence, which would have made the localization of the site of airway obstruction by IOS invalid. Both IOS and FV loop could detect airway obstruction in all 21 patients. FV loop localized the site of obstruction as combined central and peripheral airways in 15 patients (71.4%) and as peripheral in 6 (28.6%).The IOS however, revealed the presence of the predomi-nant site of obstruction peripheral in all the 21 patients, and both central and pe-ripheral obstruction in 5 patients (23.8%). <b>Conclusions:</b> IOS had proven to be advantageous over FV loop studies as it could identify central and peripheral airway obstruction separately and established the predominant site of obstruction. |
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| format | Article |
| id | doaj.art-f45c425d881546d78cb5b4d62fc2e0b4 |
| institution | Directory Open Access Journal |
| issn | 0970-2113 0974-598X |
| language | English |
| last_indexed | 2024-12-12T10:16:19Z |
| publishDate | 2008-01-01 |
| publisher | Wolters Kluwer Medknow Publications |
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| series | Lung India |
| spelling | doaj.art-f45c425d881546d78cb5b4d62fc2e0b42022-12-22T00:27:40ZengWolters Kluwer Medknow PublicationsLung India0970-21130974-598X2008-01-01251813The site of airway obstruction among patients of emphysema: Role of impulse oscillometryHira HMunjal JitendraZachariah SanjayChauhan MSingh Anshu<b>Objectives:</b> To detect the site of airway obstruction in patients of emphysema by impulse oscillometry (IOS) and to compare its observatios with flow volume loop (FV loop) studies. <b>Methods:</b> Twenty-five patients of emphysema were subjected to both impulse os-cillometry (IOS) and conventional spirometry. The resulting impedance spectra by IOS and FV loop were utilized to identify the site of airway obstruction in each of the patients. Both methods applied were also compared for sensitivity to identify airway and specify the site of obstruction. <b>Results:</b> Four patients were excluded from the final analysis as their impedance spectra showed significant upper airway influence, which would have made the localization of the site of airway obstruction by IOS invalid. Both IOS and FV loop could detect airway obstruction in all 21 patients. FV loop localized the site of obstruction as combined central and peripheral airways in 15 patients (71.4%) and as peripheral in 6 (28.6%).The IOS however, revealed the presence of the predomi-nant site of obstruction peripheral in all the 21 patients, and both central and pe-ripheral obstruction in 5 patients (23.8%). <b>Conclusions:</b> IOS had proven to be advantageous over FV loop studies as it could identify central and peripheral airway obstruction separately and established the predominant site of obstruction.http://www.lungindia.com/article.asp?issn=0970-2113;year=2008;volume=25;issue=1;spage=8;epage=13;aulast=HiraPulmonary function testingFV LoopImpulse OscillometryFlow Oscillation techniqueEmphysema |
| spellingShingle | Hira H Munjal Jitendra Zachariah Sanjay Chauhan M Singh Anshu The site of airway obstruction among patients of emphysema: Role of impulse oscillometry Lung India Pulmonary function testing FV Loop Impulse Oscillometry Flow Oscillation technique Emphysema |
| title | The site of airway obstruction among patients of emphysema: Role of impulse oscillometry |
| title_full | The site of airway obstruction among patients of emphysema: Role of impulse oscillometry |
| title_fullStr | The site of airway obstruction among patients of emphysema: Role of impulse oscillometry |
| title_full_unstemmed | The site of airway obstruction among patients of emphysema: Role of impulse oscillometry |
| title_short | The site of airway obstruction among patients of emphysema: Role of impulse oscillometry |
| title_sort | site of airway obstruction among patients of emphysema role of impulse oscillometry |
| topic | Pulmonary function testing FV Loop Impulse Oscillometry Flow Oscillation technique Emphysema |
| url | http://www.lungindia.com/article.asp?issn=0970-2113;year=2008;volume=25;issue=1;spage=8;epage=13;aulast=Hira |
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