OBJECTIVE To compare clinical signs, laboratory test results, and imaging findings between dogs with suspected anaphylaxis and dogs with sepsis. DESIGN Retrospective case-case study. ANIMALS 10 dogs with suspected anaphylaxis and 22 dogs with confirmed sepsis that met the criteria for systemic inflammatory response syndrome. PROCEDURES Medical records for dogs in each group were reviewed and data extracted regarding signalment; reason for hospital admission; physical examination findings; results of CBC, serum biochemical analysis, coagulation testing, cytologic examination, and microbial culture; and imaging reports. RESULTS All dogs in the anaphylaxis group fulfilled the criteria for systemic inflammatory response syndrome. Dogs in both groups had gastrointestinal signs, lethargy, mentation change, and bleeding abnormalities. Dogs with suspected anaphylaxis had a significantly higher eosinophil count and serum alanine aminotransferase activity and lower blood pH than dogs with sepsis. Dogs with sepsis had a significantly higher band neutrophil count, serum globulins concentration, and serum alkaline phosphatase activity and lower serum glucose concentration. Dogs in both groups had intracavitary free fluid and ultrasonographic findings of thickened intestines, gas or fluid-filled intestines, and a thickened gallbladder wall. CONCLUSIONS AND CLINICAL RELEVANCE Clinical signs, laboratory values, and imaging findings may be similar in dogs with sepsis or anaphylaxis. Given the marked difference in prognosis and treatment, early differentiation is important. Anaphylaxis should be considered if a septic nidus cannot be identified, and supportive care should be considered for such patients.

FAST exams reliably identify the presence of free fluid in the peritoneal and pleural cavities; however, TFAST is not a reliable method to diagnose pneumothorax in dogs and cats following trauma.

Urgent cholecystectomy for the management of acute gallstone disease is feasible and achievable in an acute services hospital with a specialist upper gastrointestinal team. It can lead to a reduced conversion rate, shorter hospital stay, fewer unplanned readmissions, an acceptable operating time and a low complication rate. The protocol is recommended for implementation in other hospitals.

As long as the procedure is carried out by experienced upper gastrointestinal surgeons working within a specialist-led protocol, the conversion rate for laparoscopic cholecystectomy can be as low as 12 per cent. The timing of urgent laparoscopic cholecystectomy has no impact on the conversion rate.

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