9.病人63歲主訴突發心悸及胸悶,求診時意識清楚,唯臉色蒼白,血壓132/94 mmHg,心電圖所見如心電圖一,其心律不整為: 1. Ventricular tachycardia 2. Ventricular fibrillation 3. Atrial tachycardia 4. Atrial fibrillation 5. Intraventricular conduction disturbance