PT - JOURNAL ARTICLE AU - Khaled Alshabani AU - Thomas R. Gildea AU - Michael Machuzak AU - Joseph Cicenia AU - Umur Hatipoğlu TI - Bronchoscopic lung volume reduction with valves: What should the internist know? AID - 10.3949/ccjm.87a.19083 DP - 2020 May 01 TA - Cleveland Clinic Journal of Medicine PG - 278--287 VI - 87 IP - 5 4099 - http://www.ccjm.org/content/87/5/278.short 4100 - http://www.ccjm.org/content/87/5/278.full SO - Cleve Clin J Med2020 May 01; 87 AB - Traditional therapies for emphysema such as bronchodilators and anti-inflammatory drugs have limited value due to permanent structural changes in the emphysematous lung that result in hyperinflation. Surgical lung volume reduction partially corrects hyperinflation by removing emphysematous lung and is an option in selected patients, but it carries a risk of morbidity and death. Valve therapy is a less-invasive option that involves bronchoscopic implantation of 1-way valves in emphysematous lung segments to allow air flow and mucus clearance in the direction of central airways. The authors review the rationale, evidence, and applications of valve therapy.