6 Committee comments
6.1 Most of evidence on the efficacy of this procedure came from patients with heterogeneous emphysema. The committee was told that the valves can also be used in patients with homogenous emphysema.
6.2 The committee noted that there are different devices available for this procedure, and that the published evidence shows they may have different efficacy profiles.
6.3 There is a UK lung volume reduction trial and national database for lung volume reduction procedures into which some patients treated by endobronchial valve insertion could be entered.