About this trial
The purpose of this research is to evaluate the efficacy and safety of endobronchial silicone valve in patients with severe emphysema.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Clinical and radiological evidence of emphysema
Nonsmoking for 4 months prior to screening interview
BMI less than 35 kg/m2
Stable on current medication regimen
Disqualifiers
Had two or more hospitalizations over the last year for a COPD exacerbation
Had two or more hospitalizations over the last year for pneumonia
Had a prior lung transplant, lung volume reduction surgery, bullectomy or lobectomy
Had a heart attack or congestive heart failure within the last 6 months
Trial design
Parallel
Treatments tested in this trial
ESV
DeviceThis study arm will undergo ESV treatment and also receive optimal medical management, including smoking cessation program support, pulmonary rehabilitation, usual medications and oxygen supplementation as necessary.
Optimal Medical Management (OMM)
Other interventionThis study arm will receive optimal medical management, including smoking cessation program support, pulmonary rehabilitation, usual medications and oxygen supplementation as necessary.
Treatment groups
Trial outcomes
Primary outcomes
Forced Expiratory Volume in 1-second (FEV1)
Difference between study arms in absolute change from baseline for post-bronchodilator FEV1 score at 1 year (value at 1 year minus value at baseline).
Secondary outcomes
FEV1 Post-bronchodilator Absolute Change
Difference between study arms in absolute change from baseline for post-bronchodilator FEV1 score at 1 year (value at 1 year minus value at baseline).
St. George's Respiratory Questionnaire (SGRQ)
Difference between study arms in 'absolute change from baseline' for SGRQ score at 1 year (value at 1 year minus value at baseline). The St. George's Respiratory Questionnaire measures health status (quality of life) in patients with diseases of airways obstruction. The questionnaire comprises of two parts: Part I: Symptoms (frequency \& severity) Part II: Activities that cause or are limited by breathlessness; Impacts (social functioning, psychological disturbances resulting from airways disease) A Total score is calculated which summarizes the impact of the disease on overall health status. Scores range from 0 to 100, with higher scores indicating more limitations.
6-minute Walk Distance
Difference between study arms in 'absolute and percentage change from baseline' for 6MWD at 1 year (value at 1 year minus value at baseline).
Sponsors and contacts
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China-Japan Friendship Hospital
Lead sponsor
Beijing Cardiotech Medical Technology CO., LTD
Collaborator