NAVLE（北美执业兽医考题）Day 580

Q1:A 3-year old, indoor-only, male castrated Maine Coon cat is presented to you for acute-onset of hindlimb pain and paresis. Physical examination reveals a grade III left parasternal heart murmur and minimal movement in the hind legs. Femoral pulses are bilaterally absent, and the hindlimb toes are cold to the touch. The cat is tachypenic, but lung sounds are normal. What is the most likely diagnosis? Is it？一只3岁的室内雄性已绝育缅因猫由于出现急性后肢疼痛和轻瘫前来就诊。体格检查显示左胸骨旁心脏杂音为III级，后腿运动微弱。双侧股动脉搏动消失，后肢脚趾摸起来很冷。该猫呼吸速率很快，但肺音正常。最有可能的诊断是什么？它是？