The nett was the first multi center trial to study whether lung volume reduction surgery lvrs was a safe and effective treatment for patients with chronic obstructive pulmonary disease copd of the mainly emphysema type a secondary objective of nett was to identify criteria to select patients who would benefit the most from lvrs. Overview lung volume reduction surgery is used to improve breathing in some people with severe emphysema a type of chronic obstructive pulmonary disease copd during surgery small wedges of damaged lung tissue are removed to allow the remaining tissue to function better. Mckenna rj jr brenner m fischel rj singh n yoong b gelb af osann k patient selection criteria for lung volume reduction surgery j thorac cardiovasc surg 1997114957 64 the national emphysema treatment trial research group effects of lung volume reduction surgery versus medical therapy results from the national emphysema treatment trial. The study enrolled 1218 patients with severe emphysema each patient received either lung volume reduction surgery or optimal medical treatment after they completed a lung rehabilitation program . Lung volume reduction procedures for emphysema lung volume reduction is a treatment for emphysema it aims to reduce the amount of air trapped in the lungs about 1 2 of people with copd are suitable for these procedures on this page you can read about emphysema and who will benefit from lung volume reduction lung volume reduction surgery
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