Most people use the terms heart attack and heart failure interchangeably but they are two different conditions that are equally fatal. While the symptoms and the causes might seem similar they have different consequences and manifest in different ways. To understand the conditions better we spoke to Dr Shirish Hiremath president of Cardiological Society of India (CSI) who helps us to decode these two conditions. What is a heart attack? A heart attack is a sudden unexpected event resulting due to blockage in one of the main arteries supplying blood to the heart. In the absence of blood and oxygen