NAVLE（北美执业兽医考题）Day 494

Q1:A seven-year-old dog weighing 10.9 kg is presented after the owner caught the dog eating warfarin-containing rat poison the day before. The dog has no overt clinical signs at presentation. Baseline coagulation parameters are normal [Prothrombin time (PT), Activated partial thromboplastin time (aPTT) and Proteins induced by vitamin K1 absence or antagonism (PIVKA)]. The dog is confined to limit exercise and monitored. At 72 hours PT and PIVKA tests are elevated. Which one of the following choices is the most appropriate treatment step?一只7岁大约10.9kg重的狗由于主人昨天看到他吃了含有华法林的老鼠药前来就诊。该犬目前没有明显的临床症状。基础凝血检查正常（PT，aPTT和PIVKA）。该犬被限制活动并且留观。72小时的时候PT和PIVKA结果延长。以下哪个选项是最合适的下一步治疗方案？Find out the answer by clicking on one of the listed choices. Good luck!点击列出的选项找出答案，祝大家好运