Common questions about heart transplant
Where does a donor heart come from?
Your new heart must come from someone who has been declared brain dead and whose family consents to donate the organs. It is an anonymous gift. Brain death is a permanent condition usually due to a head injury from a car accident, gun shot wound, or hemorrhage into the brain (like a stroke). It is diagnosed by many tests and confirmed by two physicians who are not involved with the donor's care to determine if it is suitable for a heart transplant.
The donor's heart continues to beat independently and may be supported by dopamine. Respirations are maintained by mechanical ventilation. The donor will undergo blood work similar to your evaluation. The donor will also have an electrocardiogram, echocardiogram, and occasionally a coronary angiogram to make sure the heart is suitable for transplant.
This information is then entered into the UNOS computer and a list of suitable recipients is printed. The list is based on blood type, body size, UNOS status, and length of time on the waiting list. Race and gender of the donor has no bearing on the match.
Because we only have a few hours to perform a heart transplant, we do a crossmatch after your transplant. This involves comparing your blood to the blood of your donor. This test is helpful to us in your post-transplant care. It may help to determine if you will have any rejection.
LifeBanc, is the local organ procurement organization that services Northeast Ohio. LifeBanc is responsible for coordinating all organ and tissue donation in the 20 county area. LifeBanc is also part of a computer network that matches donors and recipients nationwide.
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Does the heart beat the same once the heart transplant takes place?
The donor heart comes with its own pacemaker and its own coronary artery supply. However, when the heart is removed from the body, the nervous system is disconnected. The heart continues to beat adequately, but without the external nerve supply. This is referred to as a denervated heart. In a small amount of cases, a pacemaker is needed after surgery to help the heart rate.
What is immunosuppression?
Inside your body, you have a system of defense against foreign invaders, called the immune system. Made up of mostly white blood cells, its job is to destroy germs such as bacteria and viruses, and help to fight other diseases. Your white blood cells are made up of different teams of fighter cells, called B and T cells. B cells fight germs by producing antibodies. Antibodies are strong weapons against infections, causing germs to become harmless. T cells kill foreign invaders, such as germs and cancer cells. Each time your body has an immune reaction, it memorizes the foreign body (antigen) and how it was stopped so that it can respond quickly the next time the same antigen is introduced. The immune system is very helpful, but it cannot tell the difference between "bad invaders," and "good invaders," such as a transplanted heart. As a normal response, your body's immune system sees the new heart as a foreign invader and attempts to destroy it. Immunosuppressant mediations are given to stop this process. After a transplant, you need to take measures to prevent infections because you are immunosuppressed.
What is rejection?
If the immune system is able to attack the transplanted heart, it is called rejection. Rejection must be detected and treated quickly to prevent damage to the transplanted heart. After a transplant, you are given the symptoms of rejection to look for and appointments are scheduled regularly with your doctor for checkups and myocardial biopsies to help detect rejection.
Can you get coronary artery disease after a transplant?
Coronary artery disease after a transplant is sometimes called chronic rejection. It can occur anytime after a transplant, but most often several years after transplant. The coronary artery disease is different from the fatty or calcified plaque that occurs in non-transplanted hearts. After a transplant, you must follow a heart-healthy lifestyle to help lessen the risk of future coronary artery disease.
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