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Effects of Endoscopic Lung Volume Reduction on Diaphragm Function and Conformation

NCT05799352 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 35

Last updated 2025-08-11

No results posted yet for this study

Summary

Chronic obstructive lung disease (COPD) is a common disease that is frequently complicated by hyperinflation. The resulting increase in lung volume impairs the diaphragmatic function because of a shortening of the diaphragmatic fibers and an increase in the radius of curvature of the diaphragmatic domes. Lung volume reduction surgery (LVRS) has already shown an improvement in diaphragmatic function that could be explained by a change of the diaphragm conformation. More recently, endoscopic lung volume reduction (ELVR) has shown benefits in terms of respiratory function, exercise capacity and quality of life, but the mechanisms of these improvements are poorly understood. Therefore, we aim to evaluate the evolution of the diaphragmatic function and the changes in diaphragmatic conformation after unilateral ELVR.

Conditions

Interventions

DEVICE

Endoscopic lung volume reduction

a prospective monocentric study on hyperinflated COPD patients without collateral ventilation. Patients were evaluated before and 3 months after unilateral ELVR by transdiaphragmatic pressure (Pdi) measured at the functional residual capacity (FRC) after magnetic phrenic stimulation and by high-resolution computed tomography at the FRC allowing 3D modelling of the diaphragm for measurements of fibers length, length of the zone of apposition and radius of curvature of the diaphragmatic domes.

Sponsors & Collaborators

  • Erasme University Hospital

    lead OTHER

Principal Investigators

  • Olivier Taton · Hôpital Erasme, Université Libre de Brussels, Brussels, Belgium

Study Design

Allocation
NA
Purpose
TREATMENT
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2019-04-01
Primary Completion
2025-01-30
Completion
2025-01-30

Countries

  • Belgium

Study Locations

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Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT05799352 on ClinicalTrials.gov