RESUMO
Objective To detect and compare the pH value of different locations in esophagus and trachea of mice.Methods 40 male Kunming mice of clean grade were randomly divided into two groups,of which the esophagus(esophageal group) and trachea(windpipe group) were measured,before the experiment two groups kept 12 hours abrosia.The esophagus and trachea of the rats in two groups were dissected and separated out,the distance from the central incisors were 0.3 cm,0.5 cm,0.7 cm,the incision was like 'T'.The sensitive grade of pH test paper was used for the determination,and the data was recorded in each group and analyzed.Results All the mice were measured successfully.The pH of the esophagus group were (6.10±0.17),(5.84±0.11),(5.44±0.11),and the pH value of the trachea group were(7.44±0.11),(7.19±0.11),(6.97±0.07),respectively.There was a significant difference in the same segment between the two groups(P<0.05).Conclusion The results showed that the differences in the pH values of trachea and esophagus and the pH values of different segments,which provides a theoretical basis for the design of model mice by intragastric administration of pH to identify the value of trachea and esophagus.