Abstract: Abstract Objective:To explore the preoperative enteral nutrition support treatment on the respiratory function of esophageal cancer patients with low pulmonary function. Methods:Choose 2011 1 to 12 56 patients with low pulmonary function and esophageal cancer, according with the maximum voluntary ventilation（MVV） was less than 0.5 and the ratio of the first one second to forced vital capacity （FEV1） in the forced expiratory volume (FVC)was less than 0.7，were randomly divided into nutrition group （28patients）and control group （28 patients）. The nutrition group patients were given enteral nutrition supportment and the control group patients were given equal amount of calorie daily diet.Both groups were given the same routine care. After two weeks compared two sets of patients with pulmonary function and arterial blood gas.Results: The values of FVC, FEV1, MVV, arterial partial pressure of oxygen（PaO2）, arterial partial pressure of carbon dioxide（PaCO2） were significantly improved after treatment, the difference was statistically significant (P < 0.05), but FEV1/ FVC difference was not statistically significant (P > 0.05)。 The control group index was also improved, but the difference was not statistically significant (P > 0.05). Compared with the control group the values of FVC、FEV1、MVV、PaO2 and PaCO2 were significantly improved in the nutrition group (P < 0.05), but no significant difference in the level of FEV1/FVC between two groups of patients(P > 0.05). Conclusion:Preoperative enteral nutrition support can significantly improve the low pulmonary function with esophageal cancer patients of respiratory function, to provide perioperative treatment the necessary supportment.

Key words: Perioperative, Enteral nutrition, Low pulmonary function, Esophageal carcinoma, Pulmonary function, Blood gas analysis