A Method for Measuring Capillary Bleeding Time in Non‐Anaesthetized Dogs: Prolongation of the Bleeding Time by Acetylsalicylic Acid

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Abstract
A reproducible standardized method for measuring capillary bleeding time (CBT) in dogs is presented. The skin was punctured at the toe from a forelimb of non-anaesthetized dogs parallel to the edge of the horny skin of the pad. Before the procedure, a cuff of a sphygmometer was placed above the antibrachium and a hyperaemie agent was applied to the shaved area. The normal CBT in non-anaesthetized dogs was 2.25 +/- 0.76 min (x +/- SD). After injection of acetylsalicylic acid (ASA) (20 mg/kg body weight), CBT was prolonged up to 25 min. Platelet aggregation in response to 10 micrograms collagen/ml was decreased in parallel after treatment with ASA.