Heart Transplantation
Overview
The Transplant Evaluation Process
Before a person can be put on a waiting list for a heart transplant, the
determination has to be made that there is no other treatment option available
for the person's heart failure. In addition, it must be determined that
your body, your emotions, and your family/support system are capable of
enduring the transplant process. Once those determinations have been made,
there are other steps in the evaluation process. Those steps include,
but are not limited to, the following:
- exclusion criteria
Because of a shortage of donor organs, criteria have been established
to ensure that those who will benefit the most from transplant are most
likely to receive a donor organ. Your physician will discuss these criteria
with you to determine if you are a possible candidate for transplantation.
Criteria for automatic exclusion include the following:
- patients with active cancer or infection
- patients who are overweight
- patients who are actively smoking
- patients who are actively using drugs and/or alcohol
Smokers will be considered for transplant, provided they are otherwise
eligible, only if they remain smoke-free for a minimum of three months.
Random nicotine screening may be utilized if necessary.
- blood and tissue typing
Because of the body's immune system, any tissue or organ introduced
into a human body that is not a part of that body will cause a natural
process to start that will ultimately damage or destroy the foreign
tissue or organ. Thus, a potential organ recipient must have blood and
tissue-typing tests done so that a donor organ that most closely matches
the recipient can be found.
Other evaluation procedures include:
- blood chemistries
- hepatitis and HIV testing
- 24 hour urine specimen (to evaluate kidney function)
- chest x-ray (to assess for lung infection, other pulmonary diseases,
and heart size)
- abdominal ultrasound (to assess for gallstones and/or other abdominal
conditions or diseases)
- EKG (to assess the heart's electrical conduction system)
- Holter monitor (to assess the heart's electrical conduction system
in further detail than a regular electrocardiogram or EKG)
- Panorex or a type of x-ray of the teeth and jaws (to assess teeth
for cavities and abscesses that might cause infection after transplant;
your dentist will be required to clear you for a transplant)
- pulmonary function tests (to evaluate lung function)
- right heart catheterization (to assess the pressures inside the
heart, which helps your physician to determine your heart's functioning
capability)
- financial evaluation
Unfortunately, transplantation is a very expensive procedure. In addition,
the medications, follow-up visits, and additional post-transplant care
are also expensive, and will be necessary for the remainder of the heart
recipient's life. Insurance may cover the cost of the transplant procedure
itself but may not pay for post-transplant care and medications after
a certain period of time. All available assistance will be provided.
- family situation
It must be established that any potential heart recipients have an adequate
and stable support system.
- psychological evaluation
This is done to assist in determining whether a potential heart recipient
will be able to comply with the necessary treatment regimen before and
after transplant.
What is a Heart Transplant?
Heart transplantation involves removing the diseased heart and replacing
it with a healthy heart from an organ donor. In order to remove the donor
heart from the donor, the donor must be declared brain-dead.
Once a patient has been approved for transplant, then he/she is placed
on a waiting list. This list is a national data base and includes information
that will help to identify the most closely-matched organ possible for
the recipient. Waiting time may be only a few days or a few weeks, but
sometimes it may take months or longer before an acceptable organ is found.
While waiting, the patient will be closely followed by his/her physician.
The patient will remain out of the hospital for as long as his/her condition
allows. If the condition worsens, the patient may be admitted to the hospital
for more intensive therapy. Sometimes, a few days in the hospital is sufficient
to improve the patient's condition and the patient may return home. However,
it is possible that the heart's condition may worsen to the point that
the patient is unable to leave the hospital. At this point, the patient's
condition may be changed on the waiting list to indicate a worsening condition,
thus giving that patient a higher priority for suitable organs that become
available.
Once a suitable heart has been found, a team of physicians will go to
the location of the donor and will examine the heart (and other organs)
to make sure it is appropriate to use for transplant. If the heart is
acceptable, the physicians will remove the heart from the donor, place
it in a special solution to help preserve it, place it in a cooler, then
return to the hospital to perform the transplant operation.
While the team of physicians is obtaining the donor heart, the recipient
is prepared for the heart transplant operation. Once the hospital receives
notification that the donor organ is acceptable, the patient is given
final preparation for surgery and is taken to the operating room. The
diseased heart is removed, and the donor heart is attached. The patient
is then taken to the intensive care unit (ICU) to recover from the surgery.
Reasons for
the Procedure
Heart transplantation is performed to replace a failing heart that cannot
be adequately treated by other means.
Risks of the Procedure
Potential risks associated with heart transplant may include, but are
not limited to, the following:
- rejection of the new heart
- infection (due to immunosuppression necessary to help prevent rejection,
persistent infections)
- bleeding during or after the surgery
- blood clots that can cause heart attack, stroke, or lung problems
- breathing problems
- kidney failure
- coronary arteriopathy (similar to coronary artery disease)
- cancer (due to immunosuppressive therapy)
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