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surgery adenocarcinoma gastric cancer esophagus esophageal disorders thoracostomy chest tube acidosis metabolic disturbance critical care alkalosis respiratory disturbance abdominal compartment syndrome trauma gun shot injury penetrating trauma ballistics knot tying stitching suture surgical knot tying suturing surgical infection surgical wound surgical wound classification physiology pulmonary function test pulmonary pft vascular surgery pulmonary embolism venous stasis embolism vascular disease venous disease pulmonary disease lung cancer lung hiatal hernia hernia diaphram stomach cancer stomach