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In vivo Evaluation of Mucociliary Clearance in Mice
Published on: December 18, 2020
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Lung clearance index is a repeatable and sensitive indicator of radiological changes in bronchiectasis
Stephen A Rowan1, Judy M Bradley, Ian Bradbury
11 Centre for Infection and Immunity, Queen's University of Belfast, Belfast, United Kingdom.
American Journal of Respiratory and Critical Care Medicine
|January 17, 2014
Summary
The lung clearance index is a repeatable and sensitive measure for detecting lung abnormalities in bronchiectasis patients, outperforming traditional spirometry. This tool shows promise for clinical use and research in managing this condition.
Area of Science:
- Pulmonary Medicine
- Respiratory Physiology
Background:
- Bronchiectasis necessitates improved lung function markers for disease severity assessment and treatment response evaluation.
- Current spirometry may not fully capture the extent of lung abnormalities in bronchiectasis.
Purpose of the Study:
- To evaluate the lung clearance index (LCI) as a repeatable and sensitive indicator of computed tomography (CT) scan abnormalities in bronchiectasis.
- To compare the sensitivity of LCI against spirometry (specifically FEV1) in detecting CT scan findings.
Main Methods:
- Study 1: Assessed repeatability of LCI and spirometry in 30 stable bronchiectasis patients over two visits, 2 weeks apart.
- Study 2: Evaluated LCI, spirometry, and CT scan abnormalities in 60 stable bronchiectasis patients.
Main Results:
- The lung clearance index demonstrated high repeatability (ICC=0.94).
- LCI was abnormal in 88% of patients, compared to 62% for FEV1.
- LCI showed a stronger correlation with CT scan abnormalities than FEV1.
Conclusions:
- The lung clearance index is a repeatable measure and more sensitive than FEV1 in detecting CT scan abnormalities in bronchiectasis.
- LCI holds potential as a valuable clinical and research tool for managing bronchiectasis.
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