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Evaluation of clinical, laboratory, imaging findings and outcome in 99 dogs with leptospirosis

Affiliation
Clinic for Small Animals, Freie Universität Berlin, Oertzenweg 19b, Berlin, Germany
Knöpfler, S.;
Affiliation
Federal Institute for Risk Assessment, Diedersdorfer Weg 1, Berlin, Germany
Mayer-Scholl, Anne;
Affiliation
Federal Institute for Risk Assessment, Diedersdorfer Weg 1, Berlin, Germany
Luge, E.;
Affiliation
Clinic for Small Animals, Freie Universität Berlin, Oertzenweg 19b, Berlin, Germany
Klopfleisch, R.;
Affiliation
Clinic for Small Animals, Freie Universität Berlin, Oertzenweg 19b, Berlin, Germany
Gruber, A. D.;
Affiliation
Federal Institute for Risk Assessment, Diedersdorfer Weg 1, Berlin, Germany
Nöckler, Karsten;
Affiliation
Clinic for Small Animals, Freie Universität Berlin, Oertzenweg 19b, Berlin, Germany
Kohn, B.

Objective: To report clinical, laboratory and diagnostic imaging features and prognostic factors in dogs with leptospirosis from North-East Germany. Materials and Methods: Medical records of dogs diagnosed with leptospirosis from 2006 to 2013 were evaluated retrospectively. Results: The study included 99 dogs. At initial presentation, the most common clinical signs were lethargy (96%), anorexia (88%), vomiting (85%), painful abdomen (39%), diarrhoea (38%), oliguria (27%) and tachypnoea (26%). Abnormal laboratory findings included anaemia (63%), thrombocytopenia (63%), leucocytosis (57%), increase of plasma urea (84%) and creatinine concentrations (81%), increased liver enzyme activities (80%), hyperbilirubinaemia (69%), hyperphosphataemia (67%), hyponatraemia (64%), hypoalbuminaemia (55%) and hypokalaemia (29%). Radiological pulmonary changes were detected in 57% of the dogs initially or during the course of disease. Severe dyspnoea, oliguria, azotaemia, hyperbilirubinaemia and severe radiological pulmonary changes were more often found in dogs that did not survive. There was renal, hepatic and pulmonary involvement in 95, 92 and 58% of the dogs, respectively, and multi-organ lesions in 98 dogs (98%); 32 dogs died or were euthanased. Conclusion: Several clinical and laboratory abnormalities were associated with a negative outcome; severe lung involvement was specifically associated with high mortality.

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