A 64-year-old man was brought to the emergency department because of left hemiplegia with impaired consciousness. On physical examination, consciousness level was GCS E4V4M6, blood pressure 164/82mmHg, pulse rate 96/min and irregular. Neurological examination was unremarkable except for left hemiplegia. No carotid bruit was heard on either side. Brain MRI (Diffusion-weighted image) is shown in the figure.
Which of the following is the most likely ECG diagnosis?
ａ
Atrial fibrillation
ｂ
Supraventricular tachycardia
ｃ
Third-degree atrioventricular block
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Ventricular fibrillation
ｅ
Ventricular tachycardia