There has been dramatic resurgence of interest in surgical treatment o
f emphysema, particularly ''lung volume reduction'' procedures, Recent
studies have demonstrated improvements in pulmonary function, rung me
chanics, exercise tolerance, and quality of life in selected patients
following volume reduction procedures. However, considerable uncertain
ty remains regarding overall benefit, optimal patient selection, opera
tive techniques, and duration of response. This review summarizes curr
ent approaches to lung volume reduction surgery, available clinical ou
tcome information, selection criteria, and physiologic mechanisms of r
esponse, and discusses the potential role for surgical volume reductio
n in treatment of emphysema. Recent data appear to support the efficac
y of bilateral staple lung volume reduction surgery in patients with s
evere symptomatic heterogeneously distributed emphysema, Further studi
es will be needed to determine relative value of different operative t
echniques and benefit in patients with other clinical presentations.