A heart transplant, or a cardiac transplant, is a surgical transplant procedure performed on patients with end-stage heart failure or severe coronary artery disease when other medical or surgical treatments have failed. As of 2016, the most common procedure is to take a functioning heart (with or without transplantation of a lung or lungs; a cadaveric donor cardiectomy) from a recently deceased organ donor (the cadaveric allograft), and implant it into the patient. The patient's own heart is either removed (the cardiectomy for the recipient) and replaced with the donor heart (orthotopic procedure) or, less commonly, the recipient's diseased heart is left in place to support the donor heart (heterotopic procedure). Approximately 3500 heart transplants are performed every year in the world, more than half of which occur in the US. Post-operation survival periods average 15 years. Heart transplantation is not considered to be a cure for heart disease, but a life-saving treatment intended to improve the quality of life for recipients.
One of the first mentions of the possibility of heart transplantation was by American medical researcher Simon Flexner, who declared in a reading of his paper on “Tendencies in Pathology” in the University of Chicago in 1907 that it would be possible in the then-future for diseased human organs substitution for healthy ones by surgery — including arteries, stomach, kidneys and heart.
Norman Shumway is widely regarded as the father of heart transplantation although the world's first adult human heart transplant was performed by a South African cardiac surgeon, Christiaan Barnard, utilizing the techniques developed and perfected by Shumway and Richard Lower. Barnard performed the first transplant on Louis Washkansky on December 3, 1967, at the Groote Schuur Hospital in Cape Town, South Africa. Adrian Kantrowitz performed the world's first pediatric heart transplant on December 6, 1967, at Maimonides Hospital in Brooklyn, New York, barely three days after Christiaan Barnard's pioneering operation. Since the 19-day-old infant died little more than six hours after receiving the heart, this operation was considered a failure.Norman Shumway performed the first adult heart transplant in the United States on January 6, 1968, at the Stanford University Hospital.
Worldwide, about 3,500 heart transplants are performed annually. The vast majority of these are performed in the United States (2,000–2,300 annually). Cedars-Sinai Medical Center in Los Angeles, California, currently is the largest heart transplant center in the world, having performed 132 adult transplants in 2015 alone. About 800,000 people have NYHA Class IV heart failure symptoms indicating advanced heart failure. The great disparity between the number of patients needing transplants and the number of procedures being performed spurred research into the transplantation of non-human hearts into humans after 1993. Xenografts from other species and man-made artificial hearts are two less successful alternatives to allografts.
Some patients are less suitable for a heart transplant, especially if they suffer from other circulatory conditions related to their heart condition. The following conditions in a patient increase the chances of complications;
- Advanced kidney, lung, or liver disease
- Active cancer if it is likely to impact the survival of the patient
- Life-threatening diseases unrelated to heart failure including acute infection or systemic disease such as systemic lupus erythematosus, sarcoidosis, or amyloidosis
- Vascular disease of the neck and leg arteries.
- High pulmonary vascular resistance - over 5 or 6 Wood units.
- Insulin-dependent diabetes with severe organ dysfunction
- Recent thromboembolism such as stroke
- Severe obesity
- Age over 65 years (some variation between centers) - older patients are usually evaluated on an individual basis.
- Active substance abuse, such as alcohol, recreational drugs or tobacco smoking (which increases the chance of lung disease)
Post-operative complications include infection, sepsis, organ rejection, as well as the side-effects of the immunosuppressive medication. Since the transplanted heart originates from another organism, the recipient's immune system typically attempts to reject it. The risk of rejection never fully goes away, and the patient will be on immunosuppressive drugs for the rest of his or her life, but these may cause unwanted side effects, such as increased likelihood of infections or development of certain cancers. Recipients can acquire kidney disease from a heart transplant due to side effects of immunosuppressant medications. Many recent advances in reducing complications due to tissue rejection stem from mouse heart transplant procedures. Surgery death rate is 5-10% in 2011.
- 1 year: 88.0% (males), 86.2% (females)
- 3 years: 79.3% (males), 77.2% (females)
- 5 years: 73.2% (males), 69.0% (females)
In a study spanning 1999 to 2007, conducted on behalf of the U.S. federal government by Dr. Eric Weiss of the Johns Hopkins University School of Medicine, it was discovered that, compared to men receiving male hearts, "men receiving female hearts had a 15% increase in the risk of adjusted cumulative mortality" over five years. No significant differences were noted with females receiving hearts from male or female donors.
- Robert Altman (1925-2006), American film director (M*A*S*H, McCabe & Mrs. Miller, Nashville), transplant in 1995 (survival: 11 years)
- Robert P. Casey (1932-2000), American politician (42nd Governor of Pennsylvania), transplant in 1993 (survival: 7 years)
- Dick Cheney (born 1941), American politician (46th Vice President of the United States), transplant in 2012
- Erik Compton (born 1979), Norwegian-American golfer, transplants in 1992 and 2008
- Glen Gondrezick (1955-2009), American basketball player (New York Knicks, Denver Nuggets), transplant in 2008 (survival: <1 year)
- Jonathan Hardy (1940-2012), Australian actor, writer and director (The Devil's Playground, Mad Max, Mr. Reliable, Moulin Rouge!), transplant in 1988 (survival: 24 years)
- Billy T. James (1948-1991), New Zealand comedian (The Billy T James Show), transplant in 1989 (survival: 2 years)
- Eddie Large (born 1941), British comedian (Little and Large), transplant in 2002
- Mussum (1941-1994), Brazilian comedian and actor (Os Trapalhões), transplant in 1994 (survival: <1 year)
- Norton Nascimento (1962-2007), Brazilian actor, transplant in 2003 (survival: 4 years)
- Kelly Perkins (born 1961), American mountain climber, transplant in 1995
- Jerry Richardson (born 1936), American football player (Baltimore Colts) and team owner (Carolina Panthers), transplant in 2009
- Sandro de América (1945-2009), Argentinian singer, transplant in 2008 (survival: <1 year)
- Sam Wyche (born 1945), NFL player 1968-1976 and Head Coach, (Cincinnati Bengals 1984-1991), (Tampa Bay Buccaneers 1992-1995), transplant in 2016
Other notable recipients
At the time of his death on August 10, 2009, Tony Huesman was the world's longest living heart transplant recipient, having survived for 30 years, 11 months and 10 days, before dying of cancer. Huesman received a heart in 1978 at the age of 20 after viral pneumonia severely weakened his heart. The operation was performed at Stanford University under Dr. Norman Shumway.
As of February 2016, the record holder for longest living heart recipient was Englishman John McCafferty. He received his heart on 20 October 1982. He died aged 73 on 9 February 2016, 33 years after his operation. The operation was performed at Harefield Hospital in Middlesex under Sir Magdi Yacoub.
Former Vice President of the United States Dick Cheney received a heart transplant on March 24, 2012. Because he was 71 years old at the time of the surgery, it sparked discussions about the upper age of transplant patients.
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