A team of doctors at Duke University has carried out the first donation after circulatory (or cardiac) death (DCD) heart transplant in the U.S. Members of the surgical team have spoken with the press giving some details of the procedure.
Over the past several decades, heart transplants have become routine—saving the lives of thousands of people. But in recent years, the waiting list for a new heart has grown so long that new transplantation techniques have been explored. DCD is one such technique, it involves carrying out restorative techniques on a heart removed from a patient after cardiac/circulatory death. Traditionally, hearts used in transplants have come from people who have been involved in accidents or strokes, where they are brain dead but the rest of their body continues to function. Removing a heart from such a patient and chilling it right away preserves heart tissue making the heart viable for use in another person whose heart is failing.
In the new technique, called warm perfusion, a heart is removed from a person who has died—their heart stopped beating and their blood circulating. In such cases, heart tissue has typically begun to deteriorate before the person dies, making the heart unusable for anyone else. The new method involves keeping the heart at normal body temperature and immediately hooking up tubes to the heart of the dead patient to restore blood flow immediately. Doing so allows blood to flow not only through it but to the arteries and veins in it that feed its own muscle tissue. That allows the heart to begin receiving oxygen and electrolytes which allows the doctors to restart the heart beating before it is transferred to wherever the recipient is located. With the new methods, travel times of up to ten hours are possible.
Source: Read Full Article