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. 2017 Feb 23;2017(2):CD012158. doi: 10.1002/14651858.CD012158.pub2

NCT01812447.

Trial name or title Evaluation of the Spiration® valve system for emphysema to Improve lung function (NCT01812447)
Methods Randomized open‐label study. Follow‐up: 6 months. Estimated enrolment: 270 participants.
Sites: multicenter (34 locations in US and Canada)
Participants Inclusion criteria:
  • Participants suffering from severe and heterogeneous emphysema with severe dyspnoea

  • Participants with alpha‐1 antitrypsin deficiency

  • Participants certified to meet the criteria of ATS/ERS guidelines for management of stable COPD

  • Participants who are able to demonstrate physical ability to participate in the study by performing a 6‐minute walk distance of ≥ 140 m

  • Participants who have abstained from cigarette smoking for four months and are willing to abstain throughout the study

  • Pulmonary function testing results (PFTs) demonstrating FEV1 ≤ 45% of predicted, RV ≥ 150% of predicted, TLC ≥ 100% of predicted

Interventions Intervention: unilateral treatment with IBV valve + optimal medical care.
Control: optimal medical care
Participants with alpha‐1 antitrypsin will undergo the procedure without randomization.
Outcomes Primary: mean change in forced expiratory volume in 1 second (FEV1)
Secondary:
  • Target lobe volume reduction as measured by quantitative computed tomography

  • Hyperinflation as measured by the ratio of residual volume to total lung capacity (RV/TLC)

  • Health status as measured by St. George's Respiratory Questionnaire (SGRQ)

  • Dyspnea as measured by modified Medical Research Council Questionnaire (mMRC)

  • Exercise capacity as measured by Six‐Minute Walk Test (6MWT)

  • FEV1 responders, defined as those achieving at least 15% improvement from baseline

Starting date June 2013
Contact information Spiration Inc
Notes NCT01812447