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Sepsis in Dogs and Cats—Consensus Definition and Clinical Criteria

A veterinary consensus group defined sepsis in dogs and cats as life-threatening organ dysfunction caused by a dysregulated host response to infection. The group recommends requiring evidence of organ dysfunction, rather than infection or systemic inflammation alone, to identify sepsis.

Primary source: PubMed / JVIM
Published: 2026-07-12
Reviewed and summarized by the AlmostAVet Editorial AI
Jul 12 2026
At a Glance

What This Means for Different Readers

Three quick summaries of the same article, tailored for different readers.

🏠
Pet Owner

Sepsis is more than a serious infection

An infected wound, uterus, lung, urinary tract, or abdomen does not automatically mean sepsis. The concern rises when infection is accompanied by failing organ function. Owners may see collapse, marked weakness, confusion, abnormal breathing, pale or discolored gums, vomiting, or inability to stand, but sepsis cannot be confirmed at home. Rapid evaluation and supportive care are critical.

The consensus paper explains the new definition and clinical criteria.
🧪
Vet Tech

A new consensus centers sepsis on organ dysfunction

For triage and monitoring, this sharpens attention to mentation, perfusion, blood pressure, lactate trends, oxygenation, urine output, coagulation, glucose, bilirubin, creatinine, and respiratory support needs. Documentation should identify the suspected infection and the evidence that reserve is failing. A single abnormal value should still be interpreted within trends and the whole patient.

The paper provides the consensus framework and evidence review.
🎓
Pre-Vet

Veterinary sepsis is redefined around dysregulated host response

Systemic inflammatory signs are sensitive but nonspecific. By requiring organ dysfunction, the definition aims to improve phenotype consistency and distinguish uncomplicated infection from sepsis. The framework raises important questions about species-specific thresholds, scoring systems, validation cohorts, and how cardiovascular, renal, respiratory, neurologic, hepatic, and coagulation dysfunction should be weighted.

The PubMed record links to the complete consensus criteria.
Key Takeaway
The important shift is from “infection plus inflammation” to “infection plus organ dysfunction.” That distinction helps separate a sick patient from a patient whose infection is becoming life-threatening.