The effect of atorvastatin on haemostatic parameters in apparently healthy dogs

Objective To determine the effect of atorvastatin on haemostatic parameters as measured by prothrombin time, activated partial thromboplastin time and thromboelastography in apparently healthy dogs administered 2 mg/kg orally once daily for 1 week. Materials and Methods Prospective study of 20 appar...

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Bibliographic Details
Published in:Journal of small animal practice 2019-09, Vol.60 (9), p.565-570
Main Authors: Bonaparte, A., Tansey, C., Wiebe, M., Espinoza, H. E., Patlogar, J. E., Murphy, L. A., Nakamura, R. K.
Format: Article
Language:English
Subjects:
Atorvastatin
Cholesterol
Fibrinogen
Hemoglobin
Laboratory tests
Lipase
Prothrombin
Side effects
Thromboplastin
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Summary:Objective To determine the effect of atorvastatin on haemostatic parameters as measured by prothrombin time, activated partial thromboplastin time and thromboelastography in apparently healthy dogs administered 2 mg/kg orally once daily for 1 week. Materials and Methods Prospective study of 20 apparently healthy client‐owned dogs at a small animal specialty hospital. Dogs had a baseline complete blood count, serum chemistry profile, fibrinogen, platelet count, prothrombin time, activated partial thromboplastin time and thromboelastography performed. Each dog was then administered approximately 2 mg/kg of atorvastatin orally once daily for 1 week, and the laboratory tests were repeated. Adverse effects attributed to atorvastatin were recorded. Results All 20 enrolled dogs completed the study. Dogs received a median dose of 2.06 mg/kg (range 1.94 to 2.44 mg/kg) atorvastatin once daily, which was associated with a significant increase in pulse rate, mean corpuscular haemoglobin concentration, albumin and a significant decrease in mean corpuscular volume, cholesterol and lipase values compared with baseline. On thromboelastography, there was a significant increase in maximum amplitude, G, coagulation index, amplitude at 30 minutes, amplitude at 60 minutes and significant decrease in percentage of clot lysed at 30 minutes and percentage of clot lysed at 60 minutes values compared with baseline. Six dogs had a noticeable increase in appetite. Clinical Significance The results of this study suggest that atorvastatin may produce a procoagulant effect in dogs, although the clinical significance is unclear. Polyphagia was the most commonly reported adverse effect.
ISSN:0022-4510
1748-5827
DOI:10.1111/jsap.13005