Myocardial Infarction (MI), also known as a heart attack, happens when oxygen-rich blood fails to reach your heart due to artery blockage. The lack of blood in the heart causes the tissues to lose oxygen and eventually die. Heart attack is a critical condition that causes millions of deaths worldwide and in several situations hampers our body functioning as well. Obstructed blood flow can result in the accumulation of fluids in our lungs and create severe complications.