The Vedas describe the Heart as a sitting place for the Soul

Srila Prabhupada, December 2, 1973 — The Vedas describe the heart as a sitting place for the soul. So when they transplant hearts, they simply change the soul’s seat. The same soul remains. If they could prove that by changing the heart they have increased the patient’s duration of life, then that would prove they’ve caught the spirit soul. But they cannot increase the duration of life, because people have acquired their bodies by a superior arrangement. You have this body, and you must live within it for a certain period. If you simply change one of the parts of your body, that will not help you prolong your life. That is impossible. The doctors think that by changing the heart they will increase the duration of life, but that is not possible.” ~ Life Comes From Life, Thirteenth Morning Walk: December 2, 1973

httpv://youtu.be/JA0Wb3gc4mE
video: The Children’s Hospital of Philadelphia

Life Expectancy After a Heart Transplant | HealthGuide.info
Statistics show that life expectancy after a heart transplant can be improved by taking proper medications, eating properly, and regular exercise.
Statistics Of Life Expectancy

Life expectancy after a heart transplant is 85%, the first year. About 95% of the patients who had the transplant, have a significant improvement in their quality of life too.

The first historical heart transplant surgery to be performed in the United States was in January 1969. Since then, with the advancement in medical technology, heart transplant surgeries are responsible for saving over 2000 lives a year.

In the United States, 72.4% of heart recipients have been male. 65.5% of those recipients were caucasian.19.4% was of the ages 35 to 49 years of age, and 54.2% were 50 or older.

According to the Journal of the American Heart Association, the one-year survival rate was 88.0% for males and 77.2% for females. The three-year survival rate was approximately 79.3% for males and 77.2% for the females. They concluded in their statistics that the five-year survival showed 67.4% for females and was 73.1% for males. Statistics have shown that life expectancy at 10 years after transplant is 49%. Full article