What is a Heart Attack?

What is heart attack?
Occasionally, the cholesterol plaque can rupture and clots forming at the site can block the coronary artery completely.
This results in oxygen deprivation in the related heart muscle and death of the cells. This is called a Heart Attack and variable amount of heart muscle will die.
This requires an emergency admission into a hospital so that the blocked vessel can be opened as quickly as possible (using clot-busting drugs or Angioplasty with a balloon and stent) to minimise the size of the heart damage.