ArticleJournal of veterinary science2026
Blood urea nitrogen-to-albumin ratio predicts mortality in dogs with pyometra.
Article in Journal of veterinary science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
importancePyometra is a common reproductive disorder in intact female dogs and can progress to sepsis and multi-organ dysfunction. Accurate prognostic indicators are needed to guide clinical management. The blood urea nitrogen-to-albumin ratio (BUN/ALB) has been reported as a prognostic marker in human sepsis but has not been evaluated in canine pyometra.
objectiveTo evaluate the prognostic value of the BUN/ALB in canine pyometra before and after surgery.
methodsIn this retrospective study, BUN/ALB was compared among survivors, non-survivors, and healthy dogs. The BUN/ALB was calculated as blood urea nitrogen (mg/dL) ÷ albumin (g/dL). Analyses included one-way analysis of variance with the Holm-Sidak
resultsPreoperative BUN/ALB was higher in dogs with pyometra than in healthy dogs, with the highest values in non-survivors. ROC analysis showed an area under the curve (AUC) of 0.86 and an optimal cut-off of 8.935 (sensitivity of 73.08%, specificity of 90.91%). Postoperatively, the BUN/ALB remained higher in non-survivors (AUC, 0.81; cut-off, 8.445; sensitivity, 68.28%, specificity, 83.33%). CONCLUSIONS AND RELEVANCE: The BUN/ALB was significantly associated with mortality in dogs with pyometra both pre- and postoperatively. The BUN/ALB may serve as a simple, inexpensive, and readily available prognostic marker to support clinical decision-making in canine pyometra.
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