A 41-year-old is brought in after a large amitriptyline overdose. She is drowsy, blood pressure is 78/42 mmHg, pH 7.24 and ECG shows QRS duration 146 ms with a prominent terminal R wave in aVR. Which specific treatment should be given urgently?AGive IV flumazenil and reassess the conscious levelBArrange urgent haemodialysis to enhance toxin eliminationCGive IV sodium bicarbonate, guided by ECG and haemodynamicsDGive IV amiodarone for broad-complex tachycardia with ECG monitoringEGive IV procainamide for broad-complex tachycardia with ECG monitoringCheck my answer