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Review
. 2024 Jun:227:107639.
doi: 10.1016/j.rmed.2024.107639. Epub 2024 Apr 18.

Optimizing clinical outcomes for bronchoscopic lung volume reduction with Zephyr® valves

Affiliations
Free article
Review

Optimizing clinical outcomes for bronchoscopic lung volume reduction with Zephyr® valves

T David Koster et al. Respir Med. 2024 Jun.
Free article

Abstract

Bronchoscopic lung volume reduction treatment with Zephyr one-way valves is an effective guideline-based treatment option for patients with severe emphysema and hyperinflation. However, in some cases the treatment response is less than anticipated or there might be a loss of initial treatment effect. Reasons for the lack of response can include incorrect assessment of collateral ventilation, improper valve placement, or patient related factors. Loss of initial benefit can be due to granulation tissue formation and subsequent valve dysfunction, or there may be side effects such as excessive coughing or infectious problems. Careful follow-up after treatment with valves is important and evaluation with a CT scan and/or bronchoscopy is helpful if there is no improvement after treatment or loss of initial benefit. This paper aims to describe the most important causes and provide a strategy of how to approach and manage these patients.

Keywords: Bronchoscopic lung volume reduction; Bronchoscopy; COPD; Endobronchial valves; Granulation tissue; Pneumothorax.

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Conflict of interest statement

Declaration of competing interest PS declares consulting fees and educational fees. AV declares educational fees. GJC declares grants/contract, consulting fees, educational fees and participation on a DSMB. FJFH declares educational and consulting fees. DKH declares consulting fees and educational fees. AM declares consulting fees and educational fees. AC declares consulting fees and educational fees. MD declares consulting fees and support for attending meetings by GSK. JK declares consulting fees and educational fees. NS is a full-time employee of Pulmonx Corporation and declares stock options. DJS declares grants/contracts, consulting fees, educational fees and support for attending meetings. MP declares grants, consulting fees, educational fees, support for attending meetings and leadership or fiduciary roles. Regarding the consensus opinion meeting: PS, FJFH, RS, DH, RM, AM, RA, LK, AC, JK, DJS, and MP received travel and accommodation support and honoraria from Pulmonx. AV received an honorarium from Pulmonx. DEW, MD, GJC and TDK have no conflict.

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