Estudio comparativo de la respuesta gástrica en ratas con piloro ligado, normovolémicas e hipovolémicas por hemorragia aguda, sometidas a hipoxia / [Comparative study of the gastric response in rats with pyloric ligation -- normovolemic rats and rats made hypovolemic by acute hemorrhage -- subjected to hypoxia]

Gastric secretion was studied in two groups of rats in which pyloric ligature was made according to Dai’s method. Both groups were put in a hypopressure chamber. One of the groups was normovolemic. The other group was made hypovolemic by acute bleeding. The following parameters were checked in gastire contents volumen, acid and pepsin secretion, U.P./g. of stomach, chloride, potassium and sodium; in gastric mucosa total U.P. and pepsinogen concentration were measured. In the rats subjected to acute hypovolemia and hypoxia it was found a significant decrease in acid secretion, chloride and potassium mEq/1; there were no statistically significant changes in volume, pepsin secretion; U.P./g. of stomach and sodium mEq/1. Total U. P. and U.P./. of stomach increased in the gastirc mucosa.