ABSTRACT
Objective To explore and analyze the prognosis of three-field lymph node dissection and two-field lymph node dissection for upper thoracic esophageal carcinoma. Methods 120 patients with esophageal carcinoma who were accepted by our hospital from October 2010 to October 2011 were selected as the research subject. They were randomly and equally divided into the three-field lymph node dissec-tion group and the two-field lymph node dissection group. Contrast the rate of lymph nodes metastasis, rate of surgical survival and complica-tions of two groups after treatment. Results After the operation treatment, cervical lymph node and mediastinal lymph node metastasis rates in were 18. 33% and 20. 00% respectively, and the total incidence of complications is 30. 00%. They were all lower than two-field lymph node dissection group. Meanwhile, the survival rate of three-field lymph node dissection group was 83. 33% which was obviously higher than 58. 33% in the two-field lymph node dissection group with a statistical significance (P<0. 05). Conclusion Three-field lymph node dis-section can effectively improve the prognosis and clinical curative effect in treatment of upper thoracic esophageal carcinoma.
ABSTRACT
The study aims to investigate the effect of the ratio of long axis to short axis (RLS) of upright polypropylene infusion bag on discharging process and to search the best RLS. Aiming at five different RLS (1. 5 : 1, 2 : 1, 3 : 1, 4 : 1 and 5 : 1, respectively) with the volume of 100 mL, 250 mL and 500 mL, respectively, based on finite element method, analyzing the variation of stress distribution, emptying rate, drugging space and steadiness coefficient, etc. For the bags of the same volume, emptying rate increased with increasing of RLS, but the steadiness coefficient decreased with increasing of RLS. The specific increasing amplitude of emptying rate and decreasing range of steadiness coefficient were as follows: 20% and 49% for 100 mL infusion bag, 9% and 51% for 250 mL infusion bag, and 11% and 46% for 500 mL infusion bag, respectibvely, when RLS increased from 1. 5 : 1 to 5 : 1. Comparatively speaking, the increasing amplitude of the emptying rate is remarkably less than the decreasing range of the steadiness coefficient. By comprehensive consideration of both emptying rate and steadiness coefficient, lower RLS is recommended for upright polypropylene infusion bag.