Thorax Enlarging Surgery: a Novel Surgical Approach to Emphysema (TE)
There is a growing population of end-stage COPD patients for whom surgical treatments like lung transplantation and lung volume reduction surgery are not possible. In such patients, size mismatch between large emphysematous lungs and a restricted chest wall is a major cause for the reduction of dynamic lung volumes and consequent dyspnea. We hypothesized that enlargement of the thorax would be a potential alternative strategy to volume reduction surgery as it may improve lung mechanics by resizing the chest to the lung and does not further deprive patients from lung tissue which is already scarce.
|Study Design:||Endpoint Classification: Efficacy Study
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
|Official Title:||Chest Wall Enlargement by Widening Sternotomy in Patients With Severe Emphysema: a Feasibility Trial.|
- Improvement of FEV1 [ Time Frame: 1 year ] [ Designated as safety issue: No ]
- Improvement of exercise capacity [ Time Frame: 1 year ] [ Designated as safety issue: No ]
|Study Start Date:||June 2004|
|Study Completion Date:||December 2006|
|Primary Completion Date:||December 2006 (Final data collection date for primary outcome measure)|
Experimental surgical intervention.
Procedure: Chest wall enlargement
Other Name: PEEK cages
Lung volume reduction surgery primarily increases vital capacity by reducing RV more than TLC. As the chest wall is the major TLC limiting factor, an alternative approach that could circumvent size mismatch would be a surgical enlargement of the thorax cavity. Any post-operative increase of TLC would allow greater dynamic operational lung volumes to occur with an equal amount of dead space. Moreover, resizing of the thorax would have a tremendous advantage over resizing of the lung, in that it would not require resection of the lung in patients in whom lung tissue is already scarce. Chest expansion will only be guaranteed if the sternal widening osteotomy will obtain a solid union. Small poly-ether-ether-keton (PEEK) cages were designed to match both sternal halves in a 'press fit' way, which were filled with lyophilised bone and fixed with extra wires as in a classical sternotomy. These bone-filled cages function as a perfect matrix for progressive in-growth of cancellous bone.
Please refer to this study by its ClinicalTrials.gov identifier: NCT00650559
|University hospital Leuven|
|Leuven, Flanders, Belgium, 3000|
|Principal Investigator:||Marc Decramer, MD, PhD||Universitaire Ziekenhuizen Leuven|