Trial Evaluating the Rate of Pneumothorax in Severe Emphysema Secondary to Endoscopic Volume Reduction With Two-stage ZEPHYR ® Valves Versus Endoscopic Volume Reduction With One-stage ZEPHYR® Valves

Conditions: COPD Interventions: Procedure: Endoscopic lung volume reduction in 2 stages; Procedure: Endoscopic lung volume reduction in 1 stage Sponsors: University Hospital, Limoges Not yet recruiting
Source: ClinicalTrials.gov - Category: Research Source Type: clinical trials