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This study evaluated the association between a selection of candidate predictor variables, including the elevation of specific pancreatic enzymes, and outcome in dogs with gastric dilatation-volvulus (GDV). Twenty-two dogs with gastric dilatation-volvulus were included, being classified as survivors or non-survivors based on the final outcome. Dogs with intestinal obstruction (n = 16) were selected for comparison. Blood samples were collected upon admission (T0) and after 24 hours (T1). Serum lipase activity, canine pancreatic lipase immunoreactivity (cPLI) and other variables (plasma lactate concentration and C- reactive protein -CRP- in particular) were evaluated as predictive variables. T0 cPLI and serum lipase activity were not found to differ significantly between dogs with gastric dilatation-volvulus or intestinal obstruction. Canine pancreatic lipase immunoreactivity values above 400 μg/L were detected in 6/22 dogs with gastric dilatation-volvulus and 4/16 with intestinal obstruction. However, lactate concentration was significantly higher and CRP significantly lower in GDV as compared to IO dogs, and in the GDV group, lipase, cPLI and CRP measured upon admission were significantly associated with a negative outcome. No differences in lipase activity and canine pancreatic lipase immunoreactivity values were detected between T0 and T1. Presurgical cPLI and lipase activity were frequently increased during gastric dilatation-volvulus and were suggestive of the presence of pancreatic damage; while more extensive studies are required, based on this pilot analysis, cPLI has the potential to be a useful predictive variable for outcome in GDV. Further to this, serum CRP was able to predict outcome in this population of dogs with GDV, while blood lactate was not. [ABSTRACT FROM AUTHOR]