There were analyzed, in the following study, the effects of electrolytic hypotonic solutions that were administrated using small-caliber nasal esophageal probe with continual flow on acid-base balance, plasma lactate and urinary pH of horses . Six adult female were distributed in cross over system 6x3 on a mixed model simultaneously. The animals were distributed in three groups and each of them were managed by the following treatment: SEDext - 5g of sodium chloride, 5g of potassium chloride, 1g of calcium gluconate, 200mg of magnesium pidolate, and 15g of maltodextrin diluted on a 1.000mL of water. The m osmolarity measured was of 264mOsmol L-1. SEMalt - enteral electrolyte solution plus 15g of maltodextrin diluted on a 1.000mL of water. The osmolarity measured was of 203mOsmol L-1. SESucr - enteral electrolyte solution plus 15g of sucrose diluted on a 1,000mL of water. The osmolarity measured was of: 234mOsmol/L. The electrolytic solutions were administered at a dose of 15 ml kg-1 h-1 for 12 hours. Treatments associated with enteral electrolyte solutions associated to dextrose and maltodextrin did not change the average values of blood gas analysis, anion gap, measured strong ion difference and plasma lactate, while the administration of the three solutions caused a decrease in urinary pH values. Nevertheless, they are safe clinically to be used in horses.
fluid therapy; carbohydrates; blood gas analysis; homeostasis
