This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S., Subject name: Medicine
Sudden death can be due to 
Select and explain. 
A. Ventricular fibrillation, B. QT prolongation, C. Atrial flutter, D. VPCs
A: Ventricular fibrillation
Answer: A: Ventricular fibrillation 
Explanation: Ans. a (Ventricular fibrillation). (Ref. Harrison, Principles of Medicine, 18th/Chapter 233.)# Most common electrical mechanism of true cardiac arrest is ventricular fibrillation, responsible for 65-80% of cardiac arrests.# Episodes of cardiac arrest during Holter monitoring reveal that 3/4th of sudden deaths are due to VT/VF.# Treatment: Imparted cardioversion/defibrillator/amiodarone.VPCs in asymptomatic Young individual need no treatment.