In this study, applied this method to perform in vitro measuring simulative varicose vein control test. Results: The casing handle movement distance between 0.5∼14.0 cm, corresponding to the actual object diameter 0.1∼3.3 cm. It is no obvious

proportional relationship between the casing handle moving distance and endoscopic measured value. Calculation results indicate: the actual measured size of the object tends to be close endoscopic mmeasured value. In vitro experiment verify the feasibility Vadimezan and accuracy of endoscopic measuring scale. Conclusion: Applied of endoscopic measuring scale to measure the dameter of endoscopic gastric or esophageal varicose vein, which is a simple, objective, accurate and practical method. Key Word(s): 1. Endoscopy; 2. Measurement

RAD001 manufacturer scale; 3. Actual measurement; Presenting Author: ZHI QUN LI Additional Authors: ENQIANG LINGHU Corresponding Author: ENQIANG LINGHU Affiliations: Department of Gastroenterology and Hepatology, the Chinese PLA General Hospital; Department of Gastroenterology and Hepatology, the PLA General Hospital Objective: To explore in vitro different diameter venous vessels under different pressure, and to observe the effect on completely ligation role of polycyclic ligation. Methods: Select the 3–4 month-old healthy pigs, application of glass column burette to simulate different pressure, in vitro constructed porcine esophageal varices model, Polycyclic loop ligature 97 vessels, observed whether or not complete

ligation. Methods: Select the 3–4 month-old healthy pigs, application of glass column burette to simulate different pressure, in vitro constructed porcine esophageal varices model, Polycyclic loop ligature 97 vessels, observed whether or not complete ligation. Results: In vitro construction of different pressure, pig esophageal variceal ligation model, observe: 1 the ligation Thalidomide effect of different diameter of porcine esophageal variceal, ① ligation degree 100% (complete ligation):A group, D 0.3∼1.0 cm, 35 cases, 94.59%; B group D1.1–1.5 cm, 6 cases, 16.67%; C group D1.6∼2.0 cm, 0 case, 0%; ② ligation degree 50% (half ligation): D 0.3∼1.0 cm, 1 case, 2.70%; B group D1.1∼1.5 cm, 6 cases, 16.67%; C group D1.6∼2.0 cm, 0 case, 0%; ③ligation degree 0% (without ligation): A group D0.3∼1.0 cm, 1 case, 2.70%; B group D1.1∼1.5 cm, 24 cases, 66.67%; C group D1.6∼2.0 cm, 24 cases, 100%. Comparison the ligation effect of different diameter varicose vein, statistically significant difference (P0.0000 < O.05).2. The variceal ligation effect of different pressures (1) ligation degree 100% (completely ligation): A group pressure 25∼30 cmH2O, 18 cases, 56.25%; B group pressure 35∼40 cmH2O, 12 cases, 37.