Evaluation of blood gas parameters and the bicarbonate-to-lactate ratio for mortality prediction in dogs with parvoviral enteritis
Abstract
Canine parvoviral enteritis is a viral infection characterized by severe hemorrhagic gastroenteritis, leading to metabolic and electrolyte disturbances and high mortality. The study aimed to evaluate blood gas parameters and the bicarbonate-to-lactate (HCO₃/lactate) ratio for predicting mortality in dogs with parvovirus. The study population consisted of 35 dogs, 25 with parvoviral enteritis and 10 clinically healthy dogs. Venous blood gas analysis, including acid-base parameters, electrolytes, and lactate concentrations, was performed at time of admission. Lactate concentrations were significantly higher in non-survivor (n=12) dogs compared to survivor (n=13) and healthy dogs (p<0.001), while base excess in blood concentrations were lower (p=0.018). Additionally, the HCO₃/lactate ratio was significantly lower in non-survivor dogs compared to survivors. In dogs with parvoviral enteritis, pCO2, sodium and chloride levels were significantly lower compared to the healthy group (p<0.05). Receiver operating characteristic (ROC) analysis revealed cut-off values of 6.03 for the HCO₃/lactate ratio (area under the curve [AUC]: 0.763, p = 0.014) and 3.29 mmol/L for lactate (AUC: 0.776, p = 0.009) for predicting mortality. In conclusion, the HCO₃/lactate ratio is a valuable prognostic marker reflecting the metabolic acidosis and poor tissue perfusion. This ratio is a useful parameter in clinical practice and can be evaluated together with individual blood gas parameters to improve mortality prediction.
Keywords
References
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Details
Primary Language
English
Subjects
Veterinary Internal Medicine
Journal Section
Research Article
Authors
Mahmut Ok
0000-0002-8210-6735
Türkiye
Publication Date
May 7, 2026
Submission Date
February 9, 2026
Acceptance Date
May 6, 2026
Published in Issue
Year 2026 Number: 2


