OBJECTIVE: To investigate the effect of three different buffered balanced crystalloid solutions on acid-base status and electrolyte concentrations in dogs with gastric dilation-volvulus (GDV) syndrome. METHODS: The study design was a prospective, randomized clinical trial of 40 dogs. The dogs were randomly assigned to one of three groups according to the fluid used: Hartmann's solution (H), Plasmalyte (PL), and Ringerfundin (RF). Hemoglobin, albumin, lactate, electrolyte, and acid-base parameters were determined before fluid administration (T0) and at the end of surgery (T1). Results were assessed by one-way ANOVA, Fisher's exact test, the Wilcoxon signed-rank test, the Kruskal-Wallis test, and a linear mixed-effect regression model. A significance level of 0.05 was used in all analyses. RESULTS: Bicarbonate and base excess (BE) levels increased and chloride concentration decreased in the PL group; in contrast, strong ion difference apparent (SIDapp) decreased and chloride concentration increased in the RF group. The mixed-effect model confirmed a significant interaction between the type of solution and time on the changes in bicarbonate, BE, anion gap (AG), SIDapp, and chloride levels. CLINICAL SIGNIFICANCE: Significantly different effects in acid-base parameters were observed in dogs after intravenous administration of H, PL, and RF. However, clinical significance of these changes is lacking, requiring further investigation in a larger randomized controlled clinical trial.

Department of Mathematics Faculty of Electrical Engineering and Communication Brno University of Technology Czech Republic

Department of Surgery and Orthopedics Small Animal Clinic Faculty of Veterinary Medicine University of Veterinary Sciences Brno Czech Republic

Small Animal Clinical Laboratory Faculty of Veterinary Medicine University of Veterinary Sciences Brno Czech Republic

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