Heart Transplant Surgery

Introduction

If you or a family member is being considered for a heart transplant, you are likely already deep into a long journey with heart failure. You may have tried several medicines, spent time in hospital, had devices placed, or undergone earlier heart surgery. Reaching the point where a transplant is discussed is a serious milestone, and it usually means the heart has weakened to a degree that other treatments can no longer hold the line.

This guide explains what a heart transplant involves: who it is offered to, how the evaluation works, what happens during the operation, what recovery in hospital and at home looks like, and what life with a transplanted heart is like in the months and years afterwards. The aim is to help you understand each stage clearly, so that conversations with your transplant team feel less overwhelming and you can ask better questions about your own situation.

A heart transplant is one of the most complex operations in medicine, but it is also one of the most established. Programmes around the world have refined the surgery, the medicines that prevent rejection, and the follow-up care over more than five decades. Today, many people return to active, meaningful lives after transplant.

What Is a Heart Transplant?

Transplanted heart in position showing: ① aorta, ② pulmonary artery, ③ superior vena cava, ④ inferior vena cava, ⑤ left atrial cuff sutured to donor heart.

AI-generated illustration

A heart transplant is an operation in which a diseased heart is removed and replaced with a healthy heart from a deceased donor. The donor heart is connected to the recipient’s major blood vessels — the aorta, the pulmonary artery, and the large veins returning blood to the heart — so that it can take over the work of pumping blood through the body.

In most centres, including in India, the transplanted heart comes from a person who has been declared brain dead and whose family has consented to organ donation. Donation in India is governed by the Transplantation of Human Organs and Tissues Act (THOTA) and coordinated nationally through the National Organ and Tissue Transplant Organisation (NOTTO). This framework defines how donors are identified, how organs are allocated, and how recipients are matched.

A heart transplant does not cure the original heart condition in the sense of repairing the old heart — it replaces it. It also does not remove the underlying tendencies (such as high blood pressure or diabetes) that may have contributed to heart failure in the first place. What it does is restore the heart’s ability to pump effectively, which often transforms how a patient feels and what they can do day to day.

Heart transplant versus other advanced therapies

Heart transplantation is one option for end-stage heart failure, alongside long-term mechanical circulatory support such as a left ventricular assist device (LVAD). The transplant team considers both, sometimes in sequence: an LVAD may be placed first as a “bridge to transplant” while a patient waits for a donor heart, or as “destination therapy” for patients who are not transplant candidates.

Why Is a Heart Transplant Performed?

A heart transplant is considered when the heart has reached a stage of failure that no longer responds well to medicines, implanted devices, or earlier surgeries, and when life expectancy and quality of life are both seriously affected. The American Heart Association and the American College of Cardiology describe this as Stage D, or advanced, heart failure.

Common conditions leading to heart transplant

• Dilated cardiomyopathy — the heart muscle stretches and weakens, often without a clearly identifiable cause
• Ischemic cardiomyopathy — severe damage to the heart muscle from one or more heart attacks or longstanding coronary artery disease
• Restrictive and hypertrophic cardiomyopathies — conditions in which the heart muscle becomes stiff or abnormally thickened
• Congenital heart disease in adults or children where earlier repair operations are no longer enough
• Life-threatening arrhythmias that cannot be controlled by medicines, ablation, or implanted defibrillators
• Valvular heart disease that has progressed to severe ventricular failure
• Failed previous heart surgery, including failure of a previous transplant in some cases

What “end-stage” usually looks like

By the time a transplant is discussed, patients often experience:

• Severe breathlessness even with minimal activity or at rest
• Repeated hospital admissions for heart failure
• Persistent fluid overload despite high doses of diuretics
• Need for intravenous medicines (inotropes) to support the heart
• Worsening kidney and liver function due to poor circulation
• Dependence on a mechanical support device

The decision to consider transplant is made by a multidisciplinary team based on objective measures of heart function, exercise capacity, and overall health — not just on symptoms alone.

Who Is a Candidate?

Not every patient with advanced heart failure is a suitable candidate for a heart transplant. The reason is practical and ethical: donor hearts are scarce, the operation is major, and the medicines required afterwards demand strong overall health and reliable follow-up. The transplant team weighs the likelihood of long-term success against the risks of surgery and lifelong immunosuppression.

Factors that support candidacy

• End-stage heart failure with poor prognosis on current treatments
• Reasonable function of other major organs (kidneys, liver, lungs)
• No active untreated infection
• No recent or active cancer (with specific exceptions decided case by case)
• Ability and willingness to follow a lifelong medication and follow-up plan
• Strong social and family support

Factors that may rule out or delay transplant

• Active or recent cancer that is not in stable remission
• Severe, irreversible disease of another organ (kidney, liver, lung) unless a combined transplant is being considered
• Severe, fixed pulmonary hypertension (very high pressures in the lung arteries that do not respond to treatment)
• Active infection, including untreated HIV in some programmes, although criteria have evolved
• Ongoing substance use, including alcohol or tobacco, that has not been addressed
• Severe obesity or severe malnutrition
• Conditions affecting the ability to take medicines reliably

The International Society for Heart and Lung Transplantation (ISHLT) publishes detailed listing criteria that most programmes follow, with adaptation to local practice. Many of the “contraindications” above are relative rather than absolute — meaning a patient who does not qualify today may qualify later if a particular issue is addressed.

Age and heart transplant

There is no fixed upper age limit for heart transplant. Many programmes consider patients well into their 60s, and selected patients in their early 70s. What matters more than the number is overall health, fitness, and the absence of other serious illnesses. In children, transplant is offered from infancy onwards in specialised paediatric centres.

Alternatives to Heart Transplant

Before a transplant is recommended, the team will have optimised every other available treatment. Even when transplant is on the table, alternatives or bridge therapies remain part of the conversation.

Optimised medical therapy

Modern heart failure treatment uses combinations of medicines that have been shown to extend life and improve symptoms in advanced disease. These include beta blockers, angiotensin receptor-neprilysin inhibitors (ARNIs), mineralocorticoid receptor antagonists, and SGLT2 inhibitors, in addition to diuretics for fluid control. Many patients also receive treatment for the underlying cause — for example, revascularisation for coronary disease or valve repair where feasible.

Implanted devices

• Implantable cardioverter-defibrillators (ICDs) protect against sudden cardiac death from dangerous arrhythmias
• Cardiac resynchronisation therapy (CRT) coordinates the contraction of the heart’s chambers in selected patients

Mechanical circulatory support

A left ventricular assist device (LVAD) is a small pump implanted in the chest that takes over much of the work of the left ventricle. LVADs have several roles:

• Bridge to transplant — supporting a patient who is on the waiting list
• Bridge to decision — supporting a patient while the team determines transplant suitability
• Destination therapy — long-term support for patients who are not transplant candidates

Short-term devices such as extracorporeal membrane oxygenation (ECMO) or temporary ventricular assist devices may be used during a sudden severe deterioration to support the patient until a more durable plan is in place.

Palliative and supportive care

For patients who are not transplant candidates and for whom mechanical support is not appropriate, palliative care focuses on symptom relief, quality of life, and emotional and practical support. This can be provided alongside ongoing cardiology care.

The Evaluation Process

Once your cardiologist refers you to a transplant programme, you enter a structured evaluation. The aim is to confirm that a transplant is needed, to confirm that you are likely to do well after one, and to identify anything that needs to be addressed before listing.

What the evaluation typically includes

• Cardiac testing — echocardiogram, cardiac MRI, right heart catheterisation to measure pressures in the lungs, and exercise testing (cardiopulmonary exercise test, or CPET)
• Blood and tissue typing — ABO blood group, HLA typing, and a panel of antibodies that influence donor matching
• Imaging of other organs — chest CT, abdominal ultrasound, and other scans as needed
• Kidney, liver, and lung function tests
• Infectious disease screening — including hepatitis B and C, HIV, tuberculosis, cytomegalovirus (CMV), Epstein-Barr virus (EBV), and others relevant to immunosuppression
• Cancer screening appropriate to age and history
• Dental review — to address any sources of infection before surgery
• Nutritional assessment
• Psychological and social evaluation — to assess understanding, coping, support, and readiness for the demands of life after transplant

The transplant team

The team typically includes heart failure cardiologists, transplant surgeons, transplant coordinators, anaesthetists, intensive care specialists, infectious disease physicians, nephrologists, pharmacists, dietitians, physiotherapists, psychologists or psychiatrists, and social workers. Decisions about listing are made collectively, usually at a regular selection meeting.

Listing and the waiting period

If the team agrees that a transplant is appropriate, you are placed on the national waiting list managed through NOTTO and the relevant state-level organ allocation system. Time on the waiting list is unpredictable. It depends on blood type, body size, antibody profile, urgency of medical need, and donor availability.

While waiting, you remain under close cardiology review. Some patients are well enough to wait at home with regular visits. Others need hospital admission for intravenous medicines or mechanical support. The team will explain how you can be reached at any time, and what to do if a donor heart becomes available — the call may come with little notice.

Preparing for the Surgery

Preparation for heart transplant happens on two levels: the long preparation during the waiting period, and the short window when a donor heart is offered.

Long-term preparation

• Following your heart failure medication and fluid restrictions carefully
• Attending all scheduled cardiology and transplant clinic visits
• Staying as physically active as your condition allows, often guided by a cardiac rehabilitation team
• Stopping smoking and avoiding alcohol
• Maintaining good nutrition and, where relevant, working toward a healthier weight
• Keeping vaccinations up to date, including influenza and pneumococcal vaccines, before immunosuppression begins
• Treating dental issues and other potential sources of infection
• Preparing practically — a packed bag, a clear plan for transport, and a list of people to inform

When the call comes

When a potentially suitable donor heart is identified, the transplant coordinator will contact you and ask you to come to the hospital quickly. You will be asked not to eat or drink. Final tests are done on arrival, including blood work, an ECG, a chest X-ray, and a final cross-match. Sometimes, after assessment of the donor heart, the transplant cannot proceed — this is disappointing but not unusual, and it does not affect your place on the list.

What Happens During the Operation

A heart transplant is performed under general anaesthesia. Most operations take between four and six hours, sometimes longer in patients who have had previous heart surgery.

Step by step

1. Anaesthesia and monitoring. You are put to sleep. Lines are placed to monitor blood pressure, central venous pressure, and other key measures. A breathing tube is placed.
2. Opening the chest. The surgeon opens the chest through the breastbone (median sternotomy).
3. Going on bypass. You are connected to a heart-lung machine (cardiopulmonary bypass) that takes over the work of your heart and lungs during the operation.
4. Removing the diseased heart. The surgeon removes most of the failing heart, leaving small portions of the upper chambers (atria) or the back wall of the left atrium, depending on the technique used.
5. Implanting the donor heart. The donor heart is sewn into place, connecting it to the remaining atrial tissue (or directly to the large veins in a “bicaval” technique), the pulmonary artery, and the aorta.
6. Restarting circulation. Blood flow is restored to the new heart. In most cases, the heart begins to beat on its own or after a controlled electrical shock.
7. Weaning from bypass. Once the new heart is beating effectively, you are gradually taken off the heart-lung machine.
8. Closing the chest. Drains are placed to remove any blood or fluid, and the breastbone is wired back together. The skin is closed in layers.

You are then transferred, still asleep and on a ventilator, to the cardiothoracic intensive care unit (ICU).

Recovery and Healing

Recovery after heart transplant unfolds in phases: the early ICU phase, the hospital ward phase, and the months at home that follow.

The first days in intensive care

In the ICU, your heart, breathing, kidney function, and many other systems are watched continuously. The breathing tube usually stays in for a day or two, sometimes longer. Tubes drain fluid from around the heart, a urinary catheter measures urine output, and several intravenous lines deliver medicines.

Immunosuppression begins immediately to prevent rejection. You will receive strong combinations of medicines in the first days, then settle onto a maintenance regimen.

Moving to the ward

Once you are stable, breathing on your own, and no longer need intensive monitoring, you move to a cardiothoracic ward or step-down unit. The focus shifts to:

• Learning your new medicines and their schedule
• Watching for signs of rejection or infection
• Gradually increasing activity with physiotherapy
• Regular blood tests, ECGs, and echocardiograms
• Early heart biopsies to check for rejection

The total hospital stay is typically two to four weeks, though it can be longer if there are complications.

Endomyocardial biopsy

Endomyocardial biopsy procedure showing the bioptome catheter passing from the jugular vein through the right heart to sample myocardial tissue.

AI-generated illustration

The first three to six months at home

Most patients return home with a clear plan: a list of medicines, a schedule of clinic visits, instructions on what to watch for, and contact details for the transplant team. Key features of this period include:

• Daily medicines taken at fixed times, with strict attention to doses
• Frequent blood tests to monitor immunosuppression levels and organ function
• Regular outpatient clinic visits and biopsies
• Avoiding crowds, sick contacts, and high-risk foods because of infection risk
• Gradual return to walking, light activity, and then more structured cardiac rehabilitation
• Watching for symptoms such as fever, breathlessness, swelling, weight gain, or fatigue

Heart transplant recovery timeline: ① ICU (days 1–3), ② hospital ward (days 4–14), ③ discharge and early home recovery (weeks 2–6), ④ frequent outpatient monitoring (months 1–3), ⑤ return to normal activities (months 3–6).

AI-generated illustration

Risks and Complications

Heart transplant is a major operation with significant risks. Understanding them is part of giving informed consent and part of being prepared for the years that follow.

Early surgical risks

• Bleeding requiring return to the operating theatre
• Problems with the new heart starting effectively (primary graft dysfunction)
• Stroke or other neurological injury
• Kidney injury, sometimes requiring temporary dialysis
• Infections of the wound, chest, or bloodstream
• Lung problems, including pneumonia or fluid around the lungs
• Arrhythmias in the new heart, occasionally needing a pacemaker

Rejection

Rejection happens when the body’s immune system recognises the donor heart as foreign and attacks it. There are several types:

• Hyperacute rejection — very rare today because of careful matching, but immediate and severe when it occurs
• Acute cellular rejection — most common in the first months; usually treated successfully if caught early
• Antibody-mediated rejection — involves the body’s antibodies and may need specialised treatment
• Chronic rejection — develops gradually over years and contributes to long-term changes in the donor heart

Types of transplant rejection by timing: ① hyperacute (minutes to hours), ② acute cellular (weeks to months), ③ antibody-mediated (weeks to years), ④ chronic allograft vasculopathy (years).

AI-generated illustration

Long-term medication-related risks

The medicines that prevent rejection — calcineurin inhibitors (such as tacrolimus or ciclosporin), antiproliferative agents (such as mycophenolate), and corticosteroids — have side effects that accumulate over time:

• Increased risk of infection, including unusual or “opportunistic” infections
• Increased risk of certain cancers, particularly skin cancers and lymphoma
• Kidney damage
• High blood pressure
• Diabetes (new-onset after transplant)
• High cholesterol
• Bone thinning (osteoporosis)
• Tremor, headaches, mood changes

Cardiac allograft vasculopathy

Over the years, the arteries of the transplanted heart can develop a particular type of narrowing called cardiac allograft vasculopathy. Because the new heart has no nerves connecting it to the body in the usual way, this often does not cause typical chest pain. Surveillance — including periodic coronary angiography or non-invasive imaging — is part of long-term care.

Life After Heart Transplant

For most people who do well after transplant, life changes in important ways — some welcome, some demanding. Many patients describe a dramatic improvement in how they feel within weeks of leaving hospital: breathing is easier, walking is easier, and energy returns.

Medication routine

Immunosuppressive medicines must be taken every day, at the same times, for life. Missing doses or running out of supplies can cause rejection. Most patients build a routine using pill organisers, phone reminders, and a clear plan for travel and refills. Other medicines may include those for blood pressure, cholesterol, infection prevention, bone health, and stomach protection.

Follow-up

Follow-up is intensive in the first year — frequent clinic visits, blood tests, echocardiograms, and biopsies — and becomes less frequent over time. Even years after transplant, regular review and annual checks are part of life.

Infection prevention

• Hand hygiene and avoidance of sick contacts
• Food safety practices — avoiding undercooked meat, eggs, unpasteurised dairy, and certain raw foods, especially in the first months
• Safe water and care when travelling
• Vaccinations as advised by the team — live vaccines are usually avoided after transplant
• Prompt attention to fever, cough, or wound problems

Diet, exercise, and weight

A balanced diet that is low in salt, with attention to blood sugar and cholesterol, supports both the new heart and the side effects of medicines. Cardiac rehabilitation programmes guide a structured return to activity. Many transplant recipients become very active over time, including walking, cycling, swimming, and other regular exercise.

Work, study, and travel

Most patients return to work or study within a few months, depending on the demands of their role and how they feel. Travel is possible, including international travel, with planning — carrying enough medicine, knowing where to seek care if needed, and avoiding regions with infections for which the immune system is not prepared.

Emotional health

The emotional side of transplant is significant. Patients commonly experience a mix of gratitude, anxiety about rejection or infection, grief or complicated feelings about the donor, and the strain of long medical involvement. Family members may experience similar feelings. Psychological support is part of comprehensive transplant care, and asking for it is a normal part of recovery.

Sexual health and family planning

Sexual activity can usually be resumed once recovery is well underway, on advice from the team. Pregnancy after heart transplant is possible but is considered carefully because of the effects on the heart, the medicines involved, and the need to plan changes well in advance. Anyone thinking about pregnancy is encouraged to discuss it with their transplant team early.

Survival and Long-Term Outcomes

Heart transplant outcomes have improved substantially over the past decades. Registry data published by the International Society for Heart and Lung Transplantation report that, across experienced programmes, around 85 to 90 percent of adult recipients are alive one year after transplant, and median survival is now well over a decade. Many patients live 15, 20, or more years with a transplanted heart.

Individual outcomes depend on age at transplant, the underlying cause of heart failure, the function of other organs, complications during surgery, and how rejection and side effects are managed over time. Your own transplant team is best placed to discuss what is realistic in your particular situation.

Heart Transplant in Children

Heart transplantation is also performed in children, including infants. The reasons differ somewhat from adults — congenital heart disease that cannot be further repaired and cardiomyopathies are the most common indications.

What is different in children

• Donor matching uses size as well as blood type. Infants in particular may be able to receive hearts across blood group boundaries (ABO-incompatible transplantation), which can shorten waiting time
• Surgical considerations may be more complex, especially in children who have had multiple previous heart operations
• Long-term outlook can be excellent in children, with many growing up, finishing school, and living active lives, although they will require lifelong follow-up
• Growth, schooling, and development are central concerns, and care is provided in dedicated paediatric transplant centres
• Family involvement is intense, particularly with medicines, infection prevention, and school coordination

Paediatric transplant teams include specialists in paediatric cardiology, paediatric cardiac surgery, child psychology, and education liaison, in addition to the usual transplant disciplines.

Frequently Asked Questions

How long do people live after a heart transplant?

Many people live well over a decade with a transplanted heart, and a significant number live 20 years or more. Average survival has improved steadily over time. Individual outcomes depend on many factors, and your transplant team can discuss your personal outlook.

Is a heart transplant a cure?

A heart transplant is not a cure in the usual sense. It replaces a failing heart with a healthy one and restores effective pumping, but it brings with it the lifelong need for medicines to prevent rejection and for regular follow-up. For many patients, it dramatically improves both how long they live and how they live.

How long will I wait for a donor heart?

Waiting time is unpredictable. It depends on blood type, body size, antibody profile, urgency, and donor availability. Some patients receive a heart within weeks; others wait months or longer. Your transplant coordinator will explain how the waiting list works in your situation.

Can I choose my donor?

No. Donor allocation is managed by national and regional organ-sharing systems, in India through NOTTO, based on medical criteria such as blood type, size, urgency, and waiting time. Donor identity is kept confidential.

Will I feel chest pain if there is a problem with my new heart?

Not always. Because the donor heart is removed from its nerve connections, classic chest pain may not be felt with reduced blood flow. This is part of why surveillance with biopsies, blood tests, and imaging is so important. Any new symptoms — breathlessness, fatigue, fever, swelling — should be reported promptly.

What activities will I be able to do after transplant?

Many people return to walking, climbing stairs, light to moderate exercise, work, driving, and travel within a few months. Some go on to do much more intense activity, including running and cycling. Specific recommendations are made by the team based on your recovery.

Will I need to take medicines forever?

Yes. Immunosuppressive medicines must be continued for life to prevent rejection. The doses and combinations may change over time, but stopping them risks losing the transplant.

Can I get vaccines after transplant?

Most non-live vaccines are recommended — for example, the annual influenza vaccine and pneumococcal vaccines. Live vaccines are usually avoided after transplant. Your transplant team will advise on what is appropriate, and ideally many vaccines are given before transplant.

Can I have a heart transplant if I have other health conditions?

It depends on the condition. Stable, well-controlled conditions are usually compatible with transplant. Severe disease of the kidneys, liver, or lungs, active cancer, or untreated infection may need to be addressed first, and in some cases combined organ transplants (such as heart and kidney) are considered.

What happens if my body rejects the new heart?

Most episodes of rejection, especially when caught early through surveillance, can be treated successfully by adjusting medicines. Severe or repeated rejection is more serious and is managed by the transplant team with intensified treatments.

Conclusion

A heart transplant is a long journey rather than a single event. It begins well before the operation, with optimised heart failure care and detailed evaluation, continues through the unpredictable wait for a donor heart, and extends across a lifetime of medicines, follow-up, and adaptation. The operation itself, though complex, is one part of that larger arc.

For many people with advanced heart failure, transplant offers a chance to feel stronger, to return to activities that had become impossible, and to spend more time with the people who matter to them. It also asks for discipline, patience, and partnership with a transplant team. Understanding the process — what is involved, what can be expected, what can go wrong, and how problems are managed — is the foundation for making decisions that fit your own situation and for living well with a transplanted heart in the years that follow.