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Outcomes From Expanded Qualification Parameters for Bronchoscopic Lung Volume Reduction (BLVR).

Amit K Mahajan1, Priya P Patel2, Duy K Duong2

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Summary
This summary is machine-generated.

Bronchoscopic lung volume reduction (BLVR) offers benefits even for emphysema patients outside LIBERATE trial criteria. Expanding inclusion criteria for BLVR may improve outcomes in a broader patient population.

Keywords:
St. George's Respiratory Questionnaire (SGRQ)bronchoscopic lung volume reduction (BLVR)forced expiratory volumes in 1 second (FEV1)

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Area of Science:

  • Pulmonary Medicine
  • Interventional Pulmonology
  • Emphysema Treatment

Background:

  • Bronchoscopic lung volume reduction (BLVR) is a minimally invasive procedure for emphysema with hyperinflation.
  • The LIBERATE trial demonstrated benefits of BLVR in heterogeneous emphysema.
  • This study investigates BLVR outcomes in patients with homogeneous or heterogeneous emphysema who fall outside LIBERATE trial inclusion criteria.

Purpose of the Study:

  • To analyze BLVR outcomes in emphysema patients with better residual volume (RV), forced expiratory volume in 1 second (FEV1), or 6-minute walk distance (6MWD) compared to LIBERATE trial criteria.
  • To compare outcomes between patients meeting LIBERATE criteria (LIN group) and those excluded (LEX group).

Main Methods:

  • Retrospective, single-center study comparing LIN and LEX groups of emphysema patients treated with BLVR.
  • Outcomes assessed using primary and secondary endpoints from the LIBERATE trial.
  • Primary endpoint: percentage of patients with >15% improvement in FEV1 within one year.
  • Secondary endpoints: change in FEV1, 6MWD, and SGRQ score within one year.

Main Results:

  • Within 12 months, 54% of the LIN group and 42% of the LEX group achieved ≥15% FEV1 improvement.
  • No statistically significant difference in FEV1 improvement between groups (P=0.24).
  • Secondary endpoints showed comparable improvements in FEV1, 6MWD, and SGRQ between the LIN and LEX groups.

Conclusions:

  • Meaningful clinical benefits are observed when including patients with lower RV, higher FEV1, or 6MWD in BLVR treatment.
  • BLVR can be beneficial for a broader range of emphysema patients than initially defined by the LIBERATE trial criteria.