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CASE SUMMARY: A 3-year-old male neutered domestic shorthair cat was presented for vomiting, inappetence and icterus. Biochemical results and ultrasonographic findings were consistent with cholestasis and possible biliary obstruction. A diagnosis of Candida albicans cholecystitis with associated hepatitis was made following cytologic examination and fungal culture. Progressive hyperbilirubinemia and hepatic encephalopathy were ultimately fatal. RELEVANCE AND NOVEL INFORMATION: To our knowledge, this is the first report of biliary candidiasis diagnosed by cytologic examination of a cholecystocentesis sample in a domestic animal with no evidence of immunodeficiency. Additionally, this is the first reported case of fungal cholecystitis with associated white bile syndrome due to obstructive cholestasis, without an overt gall bladder mucocele.
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INTRODUCTION: In people, Salmonella is a common agent of gastroenteritis, but it can also cause extraintestinal disease such as urinary tract infections. In addition, Salmonella is often linked to the post-infection development of reactive arthritis. In canines, cases that document extraintestinal Salmonella infections or diseases similar to reactive arthritis have not been thoroughly described. CASE PRESENTATION: A case of a 5-year-old German shepherd dog with Salmonella bacteriuria during treatment for immune-mediated polyarthritis (IMPA) is described. The patient first suffered from a 3 month period of diarrhoea and presented for evaluation of a 2 month history of shifting-leg lameness. A diagnosis of IMPA was made based on cytological examination and negative synovial fluid culture. Treatment with immunosuppressive doses of prednisone lead to clinical resolution of lameness, but on a recheck abnormal urine was noted. Salmonella enterica serovar Typhimurium was isolated using standard culture methods. The patient was treated with enrofloxacin to control the bacteriuria. CONCLUSION: This case report is, to the best of our knowledge, the first to describe Salmonella bacteriuria in a dog and suggests that Salmonella infection may be a potential inciting factor for IMPA.
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Physical activity in hot environments can increase the risk of heat stress or heat stroke in dogs. Heat tolerance is influenced by acclimatization to the environment, physical fitness, and hydration state. Three common strategies to promote hydration in working dogs are free access to water (W), oral electrolyte solutions (OESs), and administration of subcutaneous fluids (SQs). None of these methods have been compared for safety or efficacy in a working environment. In a cross-over design, seven vehicle-screening canines were randomly assigned to each of the three hydration strategies during working shifts at the Sarita, TX checkpoint. Physical, behavioral, and biochemical parameters were collected before, during, and after a work shift (mean 5.7 ± 0.8 h). Dogs were given 10 mL/kg oral W, 10 mL/kg chicken flavored OES, or 15 mL/kg of SQs initially followed by controlled access to W or OES. The dogs drank 15.61 ± 4.47 mL/kg/h of W and OES when in the OES group, compared to 7.04 ± 3.42 and 5.56 ± 4.40 mL of W, for the W and SQ groups, respectively. The median environmental temperature was 84.8°F (29.3°C). The median humidity was 70%. Based on mixed effects linear modeling, dogs in the OES and SQ groups had significantly higher total CO2, and lower packed cell volume and total plasma protein at the end of the day. Creatinine increased a small but significant amount in the SQ group and decreased in the OES group. Searching behaviors were independent of hydration strategy but highly related to the dog specific factors of sex, breed, and activity level. Under conditions of controlled activity in moderate heat and humidity, dogs accustomed to the work and the environment were more likely to increase fluid consumption and hydration when provided a flavored OES. Potential benefits of OES and SQ were indirect and no adverse effects were documented for any of the hydration strategies tested.
