The basic function of the heart is to pump the blood which is then circulated to the entire body. Heart failure occurs when the heart fails to pump enough blood to meet the body’s needs. 

Now a days heart failure has become a common ailment across the globe and is the root cause of many heart-related diseases.

Most common causes of heart failure:-

• Blockage of the arteries (coronary heart disease).
• Heart attack.
• High blood pressure.
• Heart valve problems.
• Diabetes.
• Lung diseases.
• Genetic problems in the heart muscles.
• Heart infections.
• Excessive intake of alcohol.

Some people have such severe heart failure that surgery or medications don't help. They may need to have their diseased heart replaced with a healthy donor heart. Heart transplants can improve the survival and quality of life of some people with severe heart failure. However, candidates for transplantation often have to wait a long time before a suitable donor heart is found.