This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Acute coronary syndrome, Subject name: Medicine
A patient in CCU on day 2 of PCI procedure has the following rhythm. BP=90/60mmHg. Which is the next best step for management of this patient? 
Select and explain. 
A. Pacemaker, B. Lignocaine, C. Amiodarone, D. Synchronized cardioversion
A: Pacemaker
Answer: A: Pacemaker 
Explanation: The ECG shows a Ventricular rate of 30/min and atrial rate of 100/min. the patient has developed a third-degree hea block and needs a pacemaker for the same. Currently, a transvenous pacemaker is recommended for the patient.