NAVLE（北美执业兽医考题）Day 503

单选题，正确答案是100分，非正确答案为0分，Good Luck！

Q1:The day after Halloween, an obese Schnauzer is presented with a combination of vomiting, urinary accidents and diarrhea. On physical exam, muscle rigidity and telltale chocolate bar wrappers coming out in the diarrhea are noted. The dog has a seizure on the exam table. An ECG looks like the one below. What is the predominant pattern on this ECG?万圣节后的一天，一只肥胖的雪纳瑞由于呕吐，小便失控以及腹泻前来就诊。体格检查时发现其肌肉僵硬，并且可以看到排泄物中有疑似巧克力条的包装纸。该犬在诊疗台上开始抽搐。ECG显示如下。这个ECG图像的主要模式是什么？[图片]

A - Sick sinus syndrome 病态窦房结综合征

B - Atrial fibrillation 心房颤动

C - Third degree heart block 三级传导阻滞

D - Ventricular tachycardia 室速

E – Asystole 心搏停止

NAVLE（北美执业兽医考题）Day 503

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