Bronchoscopic lung volume reduction for end-stage emphysema: report on the first 98 patients

Chest
Innes Y P WanAnthony P C Yim

Abstract

To report the first multicenter experience on the treatment of end-stage emphysema using an endobronchial valve (EBV) [Emphasys EBV; Emphasys Medical; Redwood City, CA]. Retrospective analysis from prospective multicenter registry. This is a study of the use of EBVs in the treatment of end-stage emphysema at nine centers in seven countries. Ninety-eight patients with mean FEV(1) of 0.9 +/- 0.3 L (30.1 +/- 10.7% of predicted) [+/- SD] and residual volume (RV) of 5.1 +/- 1.3 L (244.3 +/- 0.3% of predicted) were treated over a period of 20 months. Spirometry, plethysmography, and diffusing capacity of the lung for carbon monoxide (Dlco) and exercise tolerance testing were performed at 30 days and 90 days after the procedure. RV decreased by 4.9 +/- 17.4% (p = 0.025), FEV(1) increased by 10.7 +/- 26.2% (p = 0.007), FVC increased by 9.0 +/- 23.9% (p = 0.024), and 6-min walk distance increased by 23.0 + 55.3% (p = 0.001). There was a trend toward improvement in Dlco, but this did not reach statistical significance (17.2 +/- 52.0%, p = 0.063). Patients treated unilaterally showed a trend toward greater improvement than those treated bilaterally. A similar trend toward improvement was observed in patients who had one entire lobe treate...Continue Reading

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