Lung volume reduction surgery (LVRS) is performed to the selected patients with lung emphysema who have higher residual volume. restricted pulmonary functions and limited diaphragmatic movement. Post-operative prolonged air leak is not uncommon following LVRS due to pulmonary emphysema. In some patients with prolonged air leak. https://www.allfixelectricales.shop/product-category/ducted-vacuum-hose/