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Impulse oscillometry measurements are correlated to quality of life in patients with pulmonary sarcoidosis

Konstantinos Karagiannis, Andras Bikov, Martina Bonifazi, Harpal Kalsi, Harpreet Lota, Sally Meah, Peter Barnes, Athol U. Wells, Paolo Paredi, Omar S. Usmani, Elisabetta Renzoni
European Respiratory Journal 2014 44: P740; DOI:
Konstantinos Karagiannis
1Interstitial Lung Disease, Royal Brompton Hospital & Imperial College, London, United Kingdom
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Andras Bikov
2Airways Disease Section, NHLI, Royal Brompton Hospital & Imperial College, London, United Kingdom
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Martina Bonifazi
1Interstitial Lung Disease, Royal Brompton Hospital & Imperial College, London, United Kingdom
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Harpal Kalsi
2Airways Disease Section, NHLI, Royal Brompton Hospital & Imperial College, London, United Kingdom
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Harpreet Lota
1Interstitial Lung Disease, Royal Brompton Hospital & Imperial College, London, United Kingdom
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Sally Meah
2Airways Disease Section, NHLI, Royal Brompton Hospital & Imperial College, London, United Kingdom
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Peter Barnes
2Airways Disease Section, NHLI, Royal Brompton Hospital & Imperial College, London, United Kingdom
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Athol U. Wells
1Interstitial Lung Disease, Royal Brompton Hospital & Imperial College, London, United Kingdom
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Paolo Paredi
2Airways Disease Section, NHLI, Royal Brompton Hospital & Imperial College, London, United Kingdom
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Omar S. Usmani
2Airways Disease Section, NHLI, Royal Brompton Hospital & Imperial College, London, United Kingdom
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Elisabetta Renzoni
1Interstitial Lung Disease, Royal Brompton Hospital & Imperial College, London, United Kingdom
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Abstract

Rationale

Although airway involvement is prevalent in pulmonary Sarcoidosis, its impact on quality of life is unclear. Impulse Oscillometry (IOS) measurements may display higher sensitivity than FEV1 and other conventional markers of airway obstruction. The present study aims to explore the utility of IOS in pulmonary sarcoidosis.

Methods

63 patients with pulmonary sarcoidosis were recruited from our Sarcoid clinic. IOS and lung function tests were performed by every subject on the same day, and all participants completed Leicester's Cough (LCQ) and St George's Respiratory Questionnaires (SGRQ). Correlations between IOS and questionnaire scores were measured by Spearman's rho.

Results

Demographics are shown in table 1

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Demographics

There were significant correlations between IOS measurements (R5, X5, Fres, AX) with lung volumes (FEV1%, FVC%, RV/TLC) and maximal expiratory flows (MEF75,50,25%). R5, X5, Fres, AX were more tightly linked to the total SGRQ scores (rho=0.41, -0.43, 0.38, 0.44, respectively, p<0.01) than lung function tests (rho=0.28,p=0.03 for both FVC% and RV/TLC, no significant correlation with FVE1, MEF25/50/75 and DLCO). LCQ score was correlated with the difference R5-R20 (rho=-0.32,p=0.01).

Conclusion

IOS measurements correlate with symptom burden more strongly than conventional lung function markers in sarcoidosis. Whether this reflects their higher sensitivity to small airway changes requires further study.

  • Lung mechanics
  • Quality of life
  • © 2014 ERS
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Impulse oscillometry measurements are correlated to quality of life in patients with pulmonary sarcoidosis
Konstantinos Karagiannis, Andras Bikov, Martina Bonifazi, Harpal Kalsi, Harpreet Lota, Sally Meah, Peter Barnes, Athol U. Wells, Paolo Paredi, Omar S. Usmani, Elisabetta Renzoni
European Respiratory Journal Sep 2014, 44 (Suppl 58) P740;

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Impulse oscillometry measurements are correlated to quality of life in patients with pulmonary sarcoidosis
Konstantinos Karagiannis, Andras Bikov, Martina Bonifazi, Harpal Kalsi, Harpreet Lota, Sally Meah, Peter Barnes, Athol U. Wells, Paolo Paredi, Omar S. Usmani, Elisabetta Renzoni
European Respiratory Journal Sep 2014, 44 (Suppl 58) P740;
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