EUROPT Clinical Trial to Study the Efficacy of One-Way Valve Implantation (New Treatment Algorithm) in Patients With Heterogeneous Emphysema

LudwLudwig Boltzmann Institute for COPD and Respiratory Epidemiology

Status and phase

Unknown

Phase 4

Conditions

Chronic Obstructive Pulmonary Disease

Emphysema

Treatments

Procedure: Bronchoscopic Lung Volume Reduction (BLVR)

Study type

Interventional

Funder types

NETWORK

Identifiers

NCT00730301

EUROPT 07-074-0507

Details and patient eligibility

About

The purpose of this study is to assess the efficacy of a new treatment algorithm for bronchoscopic lung volume reduction (BLVR) in patients with emphysema based on the information of emphysema heterogeneity, destruction score, and fissure analysis.

Full description

Emphysema is a progressive pulmonary disease characterized by abnormal and permanent enlargement of air spaces distal to terminal bronchioles accompanied by the destruction of pulmonary parenchyma. Treatment includes inhaled bronchodilator therapy, rehabilitation and/or oxygen treatment. In addition to the above, patients with severe emphysema may benefit from surgical lung volume reduction and/or lung transplantation. The rationale for lung volume reduction surgery is that reducing lung size would restore elastic recoil of the lung and improve chest wall and diaphragm mechanics. It has previously been shown that particularly patients with heterogeneous emphysema seem to benefit most from surgical lung volume reduction.

Bronchoscopic lung volume reduction (BLVR) has recently been introduced as a less invasive potential alternative to surgical lung volume reduction. BLVR attempts to achieve the effects of surgery, by placing bronchial prostheses using a fibreoptic bronchoscope to selectively occlude the airways supplying the most affected hyperinflated regions of the emphysematous lung, while permitting exhaled gas to escape. This attempts to achieve segmental or lobar volume reduction, simulating the effects of surgical LVR. Recent trials of BLVR using endobronchial one-way valves demonstrated significant improvements in lung function parameters, exercise capacity and quality of life in patients with end-stage emphysema. The treatment algorithm for valve implantations to achieve BLVR, however, varied considerably in these reports as well as clinical and functional response rates. Subset analysis of these studies revealed that particularly, but not exclusively, patients with radiological signs of lung volume reduction treated unilaterally showed significant clinical improvements, whereas most patients without signs of lung volume reduction did not experience these benefits. The present study investigates the response to BLVR based on a new treatment algorithm including lung function criteria and computed tomography of the thorax.

Enrollment

20 estimated patients

Sex

All

Ages

40 to 75 years old

Volunteers

No Healthy Volunteers

Inclusion criteria

Patient diagnosed by HRCT Core Lab with eligible heterogeneous disease distribution and at least one complete oblique fissure.
Age from 40 to 75 years
BMI < 32 kg/m2
FEV1 < 40% of predicted value, FEV1/FVC < 70%
TLC > 120% predicted, RV > 150% predicted.
Stable with < 20 mg prednisone (or equivalent) qd
PaCO2 < 50mm Hg
PaO2 > 45 mm Hg on room air
6-min walk of > 50m (without rehabilitation) or > 100m (with rehabilitation)
Nonsmoking for 4 months prior to initial interview and throughout screening
The patient agrees to all protocol required follow-up intervals.
The patient has no child bearing potential
The patient is willing and able to complete protocol required baseline assessments and procedures

Exclusion criteria

Prior endobronchial treatment for emphysema
Pleural or interstitial disease that precludes surgery.
Prior lung transplant, LVRS, median sternotomy, bullectomy or lobectomy.
Clinically significant bronchiectasis
Pulmonary nodule requiring surgery
History of recurrent respiratory infections (> 3 hospitalization in the last year)
Clinically significant (> 4 Tablespoons per day) sputum production
Fever, elevated white cell count, or other evidence of active infection
Dysrhythmia that might pose a risk during exercise or training
Congestive heart failure within 6 mo and LVEF < 45%
Evidence or history of Cor Pulmonale
Resting bradycardia (< 50 beats/min), frequent multifocal PVCs, complex ventricular arrhythmia, sustained SVT
History of exercise-related syncope
MI within 6 mo and LVEF < 45%
Evidence of systemic disease or neoplasia expected to compromise survival during 5-yr period
Any disease or condition that interferes with completion of initial or follow-up assessments
Patient is currently enrolled in another clinical trial
Patient is unable to complete 3 minutes of unloaded peddling on cycle ergometer
Alpha-1-Antitrypsin Deficiency