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Related Concept Videos

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Related Experiment Video

Updated: Apr 17, 2026

High-speed Video Microscopy Analysis for First-line Diagnosis of Primary Ciliary Dyskinesia
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High-speed Video Microscopy Analysis for First-line Diagnosis of Primary Ciliary Dyskinesia

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Lung structure-function correlation in patients with primary ciliary dyskinesia.

Mieke Boon1, Francois L Vermeulen1, Willem Gysemans1

  • 1Department of Pediatrics, Pediatric Pulmonology, University Hospital Gasthuisberg, Leuven, Belgium.

Thorax
|February 13, 2015
PubMed
Summary
This summary is machine-generated.

Lung Clearance Index (LCI) is a better marker for detecting lung damage in Primary ciliary dyskinesia (PCD) than FEV1. LCI correlates with structural lung damage and is more sensitive in identifying abnormalities in PCD patients.

Keywords:
BronchiectasisImaging/CT MRI etcRare lung diseases

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Area of Science:

  • Pulmonology
  • Rare Diseases
  • Medical Imaging

Background:

  • Primary ciliary dyskinesia (PCD) is a rare genetic disorder causing chronic airway infections.
  • Lung Clearance Index (LCI) is a potential marker for early lung damage, similar to its use in cystic fibrosis.
  • The relationship between functional and structural lung abnormalities in PCD is not well-established.

Purpose of the Study:

  • To investigate the relationship between functional and structural lung abnormalities in a cohort of children and adults with mild to moderate Primary ciliary dyskinesia.
  • To compare the sensitivity of Lung Clearance Index (LCI) and FEV1 in detecting structural lung damage in PCD patients.

Main Methods:

  • A prospective observational study involving 38 patients with PCD and 70 healthy controls.
  • Lung Clearance Index (LCI) was measured using N2 multiple breath washout.
  • FEV1 was measured, and chest imaging (cystic fibrosis computed tomography - CFCT) was performed on a subset of 30 patients to assess structural abnormalities.

Main Results:

  • Lung Clearance Index (LCI) was abnormal in 74% of PCD patients.
  • LCI showed a moderate correlation with FEV1 (r=-0.519) but a strong correlation with CFCT total scores (r=0.800), including airway wall thickening, mucus plugging, and bronchiectasis.
  • LCI was significantly more sensitive than FEV1 in detecting structural lung abnormalities (90.9% vs. 36.4%).

Conclusions:

  • Measuring Lung Clearance Index (LCI) is clinically relevant for patients with Primary ciliary dyskinesia.
  • LCI is more frequently abnormal than FEV1 in PCD.
  • LCI demonstrates superior sensitivity compared to FEV1 in identifying structural lung abnormalities in PCD.