ABSTRACT
Emphysema is a disabling and progressive disease that is hallmarked by decreased exercise
tolerance and impaired quality of life. Hyperinflation is the sentinel physiological
characteristic of emphysema that has been shown to be responsible for exercise intolerance,
dyspnea, impaired quality of life, and mortality. Surgical interventions that reduce
lung volume have been the focus of multiple proposed interventions over the past century;
however, evidence documenting their effectiveness has been lacking. Recently, lung
volume reduction surgery (LVRS) has undergone rigorous study in the National Emphysema
Treatment Trial (NETT) that documented its short and long-term effectiveness, associated
morbidity and mortality, and essential characteristics that predict success or failure.
Additional recent investigation has examined the use of less invasive techniques,
predominantly bronchoscopic techniques that reduce lung volume without open thoracotomy.
This article summarizes the major results of the NETT and briefly reviews some preliminary
results of studies examining new techniques of bronchoscopic lung volume reduction.
KEYWORDS
Emphysema - COPD - lung volume reduction surgery - lung volume reduction
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Gerard J CrinerM.D.
Division of Pulmonary and Critical Care Medicine, Temple University School of Medicine
745 Parkinson Pavilion, 3401 North Broad St., Philadelphia, PA 19140
Email: crinerg@tuhs.temple.edu