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Heart Transplant

👤by AP 0 comments 🕔Friday, February 14th, 2014

The idea of replacing a bad organ with a good one has been documented in ancient mythology. The first real organ transplants were probably skin grafts that may have been done in India as early as the second century B.C. The first heart transplant in any animal is credited to Vladimer Demikhov. Working in Moscow in 1946, Demikhov switched the hearts between two dogs. The dogs survived the surgery. The first heart transplant in human beings was done in South Africa in 1967 by Dr. Christiaan Barnard; the patient only lived 18 days. Most of the research that led to successful heart transplantation took place in the United States at Stanford University under the leadership of Dr. Norman Shumway. Once Stanford started reporting better results, other centers started doing heart transplants. However, successful transplantation of a human heart was not ready for widespread clinical application until medications were developed to prevent the recipient from "rejecting" the donor heart. This happened in 1983 when the Food and Drug Administration (FDA) approved a drug called cyclosporine (Gengraf, Neoral). Before the advent of cyclosporine, overall results of heart transplant were not very good.

What is a heart transplant?

Believe it or not, heart transplantation is a relatively simple operation for a cardiac surgeon. In fact, the procedure actually consists of three operations.

The first operation is harvesting the heart from the donor. The donor is usually an unfortunate person who has suffered irreversible brain injury, called "brain death". Very often these are patients who have had major trauma to the head, for example, in an automobile accident. The victim's organs, other than the brain, are working well with the help of medications and other "life support" that may include a respirator or other devices. A team of physicians, nurses, and technicians goes to the hospital of the donor to remove donated organs once brain death of the donor has been determined. The removed organs are transported on ice to keep them alive until they can be implanted. For the heart, this is optimally less than six hours. So, the organs are often flown by airplane or helicopter to the recipient's hospital.

The second operation is removing the recipient's damaged heart. Removing the damaged heart may be very easy or very difficult, depending on whether the recipient has had previous heart surgery (as is often the case). If there has been previous surgery, cutting through the scar tissue may prolong and complicate removal of the heart.

The third operation is probably the easiest; the implantation of the donor heart. Today, this operation basically involves the creation of only five lines of stitches, or "anastomoses". These suture lines connect the large blood vessels entering and leaving the heart. Remarkably, if there are no complications, most patients who have had a heart transplant are home about one week after the surgery. The generosity of donors and their families makes organ transplant possible.

Picture of the Heart and Great Vessels in Heart Transplant

Picture of the Heart in the Pericardial Sac

Picture of the Interior of the Heart in the Paricardial Sac

Medically Reviewed by a Doctor on 2/14/2014

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Heart Transplant - Indications Question: Have you or a loved one received a heart transplant? What were the circumstances?

Medical Author:

Michael C. Fishbein, MD

Dr. Fishbein received his undergraduate and medical degrees from the University of Illinois. He completed a residency in anatomic and clinical pathology at Harbor General Hospital/UCLA Medical Center. He is board certified in anatomic and clinical pathology.

Medical Editor:

Jay W. Marks, MD

Jay W. Marks, MD

Jay W. Marks, MD, is a board-certified internist and gastroenterologist. He graduated from Yale University School of Medicine and trained in internal medicine and gastroenterology at UCLA/Cedars-Sinai Medical Center in Los Angeles.

Article Credits / Source

AP / MedicineNet.com

AP wrote this story for MedicineNet.com. MedicineNet.com provides up to the minute breaking health news. Click here to view this full article from MedicineNet.com.

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