Lung Transplant Surgery

Introduction

If you are reading this, you or someone close to you is most likely living with advanced lung disease and has been told that a lung transplant may be part of the path ahead. You may already be under evaluation, on a waiting list, or thinking through whether transplant is the right next step. This article is written for that moment — not to convince you of any single answer, but to walk you through what a lung transplant involves, what the journey looks like before, during, and after the operation, and what life can look like in the months and years that follow.

A lung transplant is one of the most demanding operations in modern medicine. It is also one of the most transformative. For people who have spent years on oxygen, struggling to climb a few stairs or finish a sentence, a successful transplant can restore breath, energy, and independence. At the same time, transplant is not a cure. It exchanges one serious medical situation for another — a lifelong relationship with medications, monitoring, and a transplant team. Understanding both sides of that exchange is part of preparing well.

What Is a Lung Transplant?

A lung transplant is a surgical procedure in which one or both diseased lungs are removed and replaced with healthy lungs from a donor. In most cases, the donor is a person who has died and whose family has given consent for organ donation. The donor lungs are matched to the recipient based on blood type, chest size, and other compatibility factors, then transported quickly to the transplant hospital where the surgery takes place.

The aim of the operation is to restore normal oxygen exchange — the process by which the lungs take oxygen from the air and pass it into the blood, and release carbon dioxide back out. When lung tissue is severely scarred, destroyed, or no longer working, no medication can repair it. A transplant replaces the damaged tissue with a functioning organ.

The lungs and their key connections: ① trachea, ② right bronchus, ③ left bronchus, ④ pulmonary artery, ⑤ pulmonary veins, ⑥ alveoli (air sacs where oxygen exchange occurs).

*AI-generated image - for illustration only. Clinical accuracy is not guaranteed.

Lung transplantation is generally considered when:

• The underlying lung disease is advanced and progressing despite the best available medical treatment
• Life expectancy without transplant is limited
• Quality of life has become severely restricted by breathlessness
• The rest of the body is healthy enough to withstand a major operation and lifelong immune-suppressing medication

Because donor lungs are scarce and the surgery carries significant risk, transplant teams take great care to identify people most likely to benefit. Many patients live for years after a successful transplant, and some return to work, travel, exercise, and active family life.

Types of Lung Transplant

Not every transplant looks the same. The type of operation a person receives depends on their underlying disease, the condition of their heart, and the availability of suitable donor organs.

Single-Lung Transplant

In a single-lung transplant, one diseased lung is removed and replaced with a healthy donor lung. The other native lung is left in place. This approach is sometimes used for conditions such as idiopathic pulmonary fibrosis, where damage is balanced between the two lungs and the remaining native lung is not a source of ongoing infection.

Single-lung transplant is a shorter operation than a double transplant and uses one donor lung rather than two. However, the remaining native lung continues to have the original disease, which can sometimes affect long-term function.

Double-Lung (Bilateral) Transplant

In a double-lung transplant, both lungs are replaced. This is usually preferred — and often required — for diseases that affect both lungs and produce chronic infection, such as cystic fibrosis and bronchiectasis. Leaving a diseased lung in place in these conditions would expose the new donor lung to constant infection. Double-lung transplant is also commonly performed for severe COPD, pulmonary hypertension, and many cases of pulmonary fibrosis.

The three types of lung transplant: ① single-lung transplant (one donor lung replaces one diseased lung), ② double-lung transplant (both lungs replaced), ③ heart-lung transplant (heart and both lungs replaced together).

*AI-generated image - for illustration only. Clinical accuracy is not guaranteed.

Heart-Lung Transplant

A heart-lung transplant replaces the heart and both lungs together, in a single operation. It is reserved for situations in which both the heart and the lungs are severely diseased and cannot be treated separately. The most common reasons are certain forms of pulmonary hypertension with irreversible heart damage, or congenital (present from birth) heart conditions that have caused secondary lung disease.

Heart-lung transplant is uncommon. Most patients with pulmonary hypertension today are treated with double-lung transplant alone, because the heart often recovers once the lung pressure normalises.

Why a Lung Transplant May Be Considered

Lung transplant is considered for a small group of people with advanced, end-stage lung disease who have not improved on other treatments. The most common conditions leading to transplant are:

• Chronic obstructive pulmonary disease (COPD), including emphysema — a progressive airway disease most often caused by long-term smoking
• Idiopathic pulmonary fibrosis (IPF) and other forms of interstitial lung disease — conditions in which the lung tissue becomes progressively scarred
• Cystic fibrosis — a genetic condition causing thick mucus, chronic lung infection, and progressive damage
• Pulmonary arterial hypertension — high blood pressure in the lung arteries that strains the heart and damages the lungs
• Bronchiectasis — permanent widening and scarring of the airways, often with chronic infection
• Sarcoidosis in its advanced fibrotic form
• Alpha-1 antitrypsin deficiency — a genetic cause of early-onset emphysema
• Less commonly, late lung damage after severe COVID-19 or other forms of acute lung injury

Transplant is not the first treatment for any of these conditions. People typically reach the point of transplant evaluation only after years of medical therapy — inhalers, oxygen, pulmonary rehabilitation, anti-fibrotic medications, treatments for pulmonary hypertension, antibiotics, and sometimes other surgeries. Transplant is considered when these treatments are no longer enough to keep breathing, oxygen levels, or daily life at an acceptable level.

Who Is a Candidate?

Deciding whether someone is a candidate for lung transplant is a careful, multi-step process. The transplant team weighs the severity of the lung disease against the rest of the body's ability to handle the operation and lifelong immunosuppression. The aim is to identify people who are sick enough to need transplant but well enough to benefit from it.

Factors that generally favour candidacy include:

• Advanced lung disease with limited life expectancy on current treatment
• Reasonable function of the heart, kidneys, and liver
• Absence of active cancer
• No uncontrolled or untreatable infection
• Stable mental health and a clear understanding of what transplant involves
• A strong support system — family or close caregivers who can help during recovery and long-term care
• Willingness and ability to take medications consistently and attend lifelong follow-up
• Avoidance of smoking and other substances that damage the lungs

Factors that may make transplant unsafe or unlikely to succeed include severe disease in other organs, recent cancer, active infection that cannot be cleared, ongoing substance use, or medical conditions that would prevent the body from healing or coping with anti-rejection drugs.

Age is considered, but there is no single fixed cut-off. Many programmes will consider patients into their sixties and, in selected cases, beyond, as long as the overall picture is favourable. Each person is evaluated as an individual rather than by age alone.

Alternatives and Treatments Tried Before Transplant

Before transplant is considered, doctors typically work through the full range of options for the specific lung disease. Depending on the condition, these may include:

• Optimised medical therapy — inhaled bronchodilators and steroids for COPD, antifibrotic drugs such as pirfenidone or nintedanib for IPF, CFTR modulator therapies for many people with cystic fibrosis, and targeted medications for pulmonary hypertension
• Long-term oxygen therapy for low blood oxygen levels
• Non-invasive ventilation at night or during the day for some patients
• Pulmonary rehabilitation — a structured programme of exercise, breathing techniques, and education that improves stamina and quality of life
• Treatment of infections with antibiotics, often long courses for chronic conditions like bronchiectasis and cystic fibrosis
• Lung volume reduction surgery or endobronchial valves for selected patients with severe emphysema, which can sometimes delay or replace the need for transplant
• Vaccinations and infection prevention to reduce the risk of further damage

Transplant becomes a topic of conversation when these treatments are no longer keeping the disease stable. For many people, that point arrives gradually — with rising oxygen needs, more frequent hospitalisations, or a noticeable decline in what they can do day to day.

Preparing for a Lung Transplant

Preparation for transplant is a process, not a single appointment. It often unfolds over weeks to months and involves multiple specialists.

The Transplant Evaluation

The transplant evaluation is designed to answer two questions: is the lung disease advanced enough to need transplant, and is the rest of the body well enough to undergo it. Typical tests include:

• Pulmonary function tests to measure how well the lungs move air and exchange oxygen
• Imaging such as chest X-ray and high-resolution CT scan
• Heart tests — echocardiogram, ECG, and sometimes a cardiac catheterisation to look directly at the heart and lung pressures
• Six-minute walk test to measure exercise capacity and oxygen needs during activity
• Blood tests to check organ function, blood counts, and clotting
• Tissue typing and blood group testing for donor matching
• Infection screening for hepatitis, HIV, tuberculosis, cytomegalovirus, and other infections
• Cancer screening appropriate to age and history
• Dental review, since untreated dental infection can pose a risk after transplant
• Nutrition assessment, as both being underweight and overweight affect transplant outcomes
• Psychological and social assessment to understand mental health, support systems, and readiness for the demands of transplant

After all results are gathered, the multidisciplinary transplant team meets to discuss the case. The team usually includes transplant pulmonologists, transplant surgeons, anaesthetists, nurses, physiotherapists, dietitians, social workers, and mental health professionals.

Going on the Waiting List

If you are accepted as a candidate, you are placed on the transplant waiting list. In India, organ allocation is governed by the Transplantation of Human Organs and Tissues Act and coordinated through state and national networks. Donor lungs are allocated based on factors such as medical urgency, blood group, lung size match, and time on the list.

Waiting times vary widely and can be unpredictable. While on the list, you will need to:

• Stay reachable by phone at all times
• Keep up with pulmonary rehabilitation and exercise as much as your condition allows
• Maintain good nutrition
• Avoid smoking, alcohol misuse, and other substances
• Attend regular check-ups with the transplant team
• Treat any infections promptly
• Arrange logistics in advance — transport, accommodation if needed, and a primary caregiver

Some people remain on the list for months or longer. Others receive a call sooner than expected. The waiting period is often emotionally demanding, and many transplant programmes offer counselling and peer support to help people through it.

What Happens During Lung Transplant Surgery

When a suitable donor lung becomes available, the transplant team will contact you to come to the hospital immediately. Time matters, because donor lungs function best when transplanted within a few hours of being removed from the donor.

Once you arrive, the team will repeat key tests to confirm you are well enough for surgery. You will not eat or drink anything in preparation. The donor lungs are inspected on arrival; if for any reason they are not suitable, the operation may be cancelled and you will return to the list. This can happen and does not mean the next opportunity is far off.

Anaesthesia and Monitoring

Lung transplant is performed under general anaesthesia — you are fully asleep throughout. A breathing tube is placed, and lines are inserted into veins and arteries to monitor blood pressure, fluids, and oxygen levels closely. A urinary catheter is placed to monitor kidney function during the operation.

The Incision

The surgical approach depends on whether one or both lungs are being transplanted:

• Single-lung transplant is usually performed through an incision on one side of the chest, between the ribs
• Double-lung transplant may be done through two separate side incisions, or through a single incision across the lower chest known as a clamshell incision
• Heart-lung transplant uses an incision down the front of the chest, through the breastbone

Removing the Diseased Lung and Implanting the Donor Lung

The surgeon carefully disconnects the diseased lung from its three main attachments: the pulmonary artery (carrying blood to the lung), the pulmonary veins (carrying oxygenated blood back to the heart), and the main bronchus (the airway). The diseased lung is then removed.

Key surgical connections made during lung implantation: ① bronchial anastomosis (airway), ② pulmonary artery anastomosis, ③ pulmonary vein anastomosis to the left atrial cuff.

*AI-generated image - for illustration only. Clinical accuracy is not guaranteed.

Support During Surgery

Some patients need temporary mechanical support of their circulation during the operation. This may be a heart-lung bypass machine or a device called ECMO (extracorporeal membrane oxygenation), which takes over the work of the lungs while the new ones are being placed. Whether this is used depends on the patient's condition and the surgeon's plan.

Length of Surgery

A single-lung transplant typically takes around 4 to 6 hours. A double-lung transplant usually takes 6 to 10 hours, sometimes longer. Heart-lung transplant takes longer still. Family members are usually given updates during the operation.

At the end of the operation, chest drains are placed to remove air and fluid, the incision is closed, and you are moved to the intensive care unit (ICU) still on the ventilator.

Recovery in the Hospital

Recovery from a lung transplant is gradual. The first phase is in intensive care.

The ICU Phase

In the ICU, you will remain on the ventilator for some hours to days, depending on how the new lungs are working and how stable your body is. Many people are woken from anaesthesia within the first day and the breathing tube is removed as soon as it is safe. Throughout this time, the team monitors:

• Oxygen levels and ventilator settings
• Blood pressure and heart function
• Output from the chest drains
• Kidney function and fluid balance
• Pain control
• Signs of infection or rejection

Immunosuppressive medications — the drugs that prevent your immune system from rejecting the new lungs — are started immediately and will be continued for life.

Moving to the Transplant Ward

Once you are stable, breathing on your own, and the early ICU period is past, you move to a specialised transplant ward. Here, the focus shifts to:

• Gradually increasing activity, starting with sitting up, then walking with assistance
• Breathing exercises and chest physiotherapy to help the new lungs expand
• Learning about your medications — what each one does, how to take it, and what side effects to watch for
• Monitoring blood tests, lung function, and chest imaging
• Biopsies of the new lung in some programmes to check for early rejection

Typical in-hospital recovery stages after lung transplant: ① ICU on ventilator, ② breathing tube removed, ③ transfer to transplant ward, ④ walking with assistance, ⑤ discharge preparation.

*AI-generated image - for illustration only. Clinical accuracy is not guaranteed.

Recovery at Home

Leaving the hospital is a major milestone, but recovery continues for many months afterwards. The first three to six months are typically the most intensive period of follow-up.

Frequent Follow-up

In the early months after transplant, you will be seen by the transplant team often — sometimes weekly. Visits typically include blood tests, lung function tests, and a check for signs of infection or rejection. Some programmes perform routine bronchoscopies and biopsies of the transplanted lung in the first year to detect early rejection before symptoms appear.

Pulmonary Rehabilitation After Transplant

Even with a working new lung, your body has been deconditioned by years of illness and a major operation. Pulmonary rehabilitation after transplant rebuilds strength, stamina, and confidence. Programmes typically include supervised exercise, breathing techniques, and education on how to manage daily activity safely. Most people see significant improvements in walking distance and energy over the first three to six months.

Returning to Daily Life

Most patients regain meaningful independence within three to six months. Driving, light work, household tasks, and travel become possible again for many people. Heavier physical activity is reintroduced gradually with guidance from the transplant team. Each person's pace is different, and the team will help set realistic goals based on your situation.

Immunosuppression and Avoiding Rejection

A lung transplant requires lifelong medication to prevent rejection. Rejection is the body's natural response to a foreign organ — the immune system recognises the new lung as “not me” and tries to attack it. Immunosuppressive medications quieten the immune system enough to keep the new lung safe.

The immunosuppression balance after lung transplant: too little medication risks organ rejection, while too much increases infection susceptibility and other side effects.

*AI-generated image - for illustration only. Clinical accuracy is not guaranteed.

These medications work, but they come with trade-offs:

• Higher infection risk — a quieter immune system is less able to fight off bacteria, viruses, and fungi
• Kidney effects — some immunosuppressants can affect kidney function over time
• Blood pressure and cholesterol changes
• Higher risk of diabetes
• Bone thinning with long-term steroids
• Higher long-term risk of certain cancers, particularly skin cancers and lymphoma
• Drug interactions with many common medications, including some antibiotics and herbal remedies

The transplant team monitors blood levels of key drugs, adjusts doses, and screens regularly for these effects. Taking medications exactly as prescribed, every day, is one of the most important things you can do for the new lungs.

Types of Rejection

Even with medication, rejection can happen. It is broadly grouped into:

• Acute rejection — can occur in the first year, especially in the first few months. Often treatable with adjusted immunosuppression. May cause breathlessness, fever, or a drop in lung function, but sometimes has no symptoms and is only picked up on routine tests.
• Chronic lung allograft dysfunction (CLAD) — a longer-term form of rejection in which the new lung function declines gradually over months or years. CLAD is currently one of the main limits on long-term survival after lung transplant. Research into how to prevent and treat it is ongoing.

Reporting symptoms early — new breathlessness, cough, fever, or a drop in your home lung function readings — gives the team the best chance of catching rejection when it is most treatable.

Risks and Complications

Lung transplant is among the highest-risk operations in transplantation, and being clear-eyed about the risks is part of preparing well.

Early Risks (First Weeks to Months)

• Primary graft dysfunction — a form of injury to the new lung in the first 72 hours, which can range from mild to severe
• Bleeding
• Infection, including pneumonia in the new lung
• Problems at the airway connection, such as narrowing or poor healing
• Blood clots
• Acute rejection
• Kidney injury from medications or low blood pressure during surgery
• Heart rhythm problems, particularly atrial fibrillation

Longer-term Risks

• Chronic lung allograft dysfunction
• Long-term side effects of immunosuppression listed above
• Recurrent infections, including viral infections such as cytomegalovirus and fungal infections such as aspergillosis
• Increased risk of certain cancers
• Osteoporosis and bone fractures
• Mental health effects, including anxiety and depression

It is also honest to say that some patients do not survive the first year after transplant, and that long-term survival, while improving, is shorter than after kidney or liver transplant. At the same time, many patients live well beyond five years, and a meaningful proportion live ten years or more, often with good quality of life. Outcomes have improved steadily as surgical techniques, donor selection, and post-transplant care have advanced.

Your transplant team will discuss expected outcomes for your specific condition and situation. National and international registries publish broad survival figures, but the most useful conversation is with the team that knows your case.

Life After a Lung Transplant

For many people, life after a successful lung transplant is dramatically different from life before. The constant breathlessness lifts. Walking, climbing stairs, playing with children or grandchildren, returning to work — activities that had become impossible are possible again. At the same time, life after transplant has its own rhythm and demands.

Medication Routine

Daily medications become part of life. Most people take immunosuppressants twice a day, along with other medicines for infection prevention, blood pressure, blood sugar, bone health, or other needs. Pill organisers, phone reminders, and a consistent routine help. Missing doses, even occasionally, can risk rejection.

Infection Prevention

Because the immune system is suppressed, simple precautions matter more than they did before. The transplant team will give specific guidance, but common steps include:

• Regular handwashing
• Avoiding close contact with people who are unwell
• Wearing a mask in crowded indoor places, especially early after transplant
• Staying up to date with recommended vaccinations (live vaccines are usually avoided)
• Being careful with food — avoiding raw or undercooked meat, eggs, and unpasteurised dairy
• Being cautious around soil, compost, gardening, and construction dust, which can carry fungal spores
• Avoiding pet reptiles and birds in some cases, and using care with pet cleaning

Exercise and Activity

Regular exercise is encouraged and is one of the most powerful things you can do for long-term health after transplant. Walking, cycling, swimming (once incisions are fully healed and infection risk is low), and structured exercise programmes are all generally supported. Heavy lifting is restricted in the early months to allow the chest to heal.

Diet

A balanced diet supports recovery and helps manage the metabolic side effects of medications. Many people need to watch sugar intake to reduce diabetes risk, watch salt to manage blood pressure, and pay attention to calcium and vitamin D for bone health. A dietitian on the transplant team can help tailor advice.

Smoking, Alcohol, and Other Substances

Smoking is incompatible with a lung transplant — not only your own smoking but also avoiding secondhand smoke as much as possible. Alcohol is usually restricted, both for liver protection and because it interacts with medications. Recreational substances are avoided.

Mental and Emotional Health

The emotional side of transplant is significant. Some people feel deep gratitude and renewed purpose. Others experience anxiety about rejection, sadness about ongoing medical demands, or complicated feelings about the donor. Many transplant programmes offer or refer to mental health support, and connecting with other transplant patients can help.

Work, Travel, and Relationships

Many people return to work in some form after recovery, although the timing depends on the type of job and the person's progress. Travel becomes possible again, with planning — carrying medications, knowing where to seek care if needed, and avoiding regions with active outbreaks of infections. Intimate relationships generally continue normally, and family planning — including pregnancy in some women after transplant — can be discussed with the team.

Lung Transplant in Children

Lung transplant in children is uncommon and is performed at a small number of specialised centres. The most common reasons children need lung transplant include cystic fibrosis, pulmonary hypertension, certain congenital lung malformations, and some interstitial lung diseases.

The principles are the same as in adults — advanced lung disease, optimal medical therapy already in use, and careful evaluation of the whole child. There are some particular considerations:

• Size matching can be more challenging in small children
• Growth and development need to be supported alongside transplant care
• School and social life are central to the child's wellbeing and are factored into recovery planning
• Family support is essential — parents and caregivers carry much of the day-to-day medication and monitoring burden
• Transition to adult care happens gradually as the child grows into adolescence and adulthood

Outcomes for children after lung transplant have improved over time. Decisions are made by paediatric transplant teams in close partnership with the family, and the emotional and developmental needs of the child are part of every step of care.

Frequently Asked Questions

How long does someone live after a lung transplant?

Survival varies depending on age, underlying disease, and how the body responds to the new lungs. Many people live well beyond five years, and a meaningful proportion live ten years or more. Long-term survival continues to improve with advances in care. Your transplant team can give you a more personalised picture based on your specific condition.

Will I need oxygen after a lung transplant?

Most people do not need long-term oxygen after a successful transplant, which is one of the most striking changes for those who spent years on oxygen beforehand. Some patients use oxygen briefly during recovery.

How long is the wait for donor lungs?

Waiting times are unpredictable. They depend on blood group, size, urgency, the specific allocation system in your region, and donor availability. Some patients wait weeks, others months or longer. The transplant team can give you a sense of the typical experience at their centre.

Can both lungs come from one donor?

Yes. In a double-lung transplant, both donor lungs typically come from the same donor.

Will I feel the new lungs are mine?

Most patients describe a process of physical and emotional adjustment. The new lungs work for you and become part of how you breathe, but the sense of connection and identity often grows over time. Many transplant programmes offer counselling and peer support for this part of the journey.

What happens if rejection occurs?

Acute rejection in the first year is often treatable, usually by adjusting immunosuppressive medications, sometimes with a short course of higher-dose steroids. Chronic rejection is harder to reverse, but treatments are available and research is ongoing. The earlier rejection is detected, the more options there are.

Can a lung transplant be repeated?

In selected cases, a second lung transplant can be considered if the first transplant fails. This is uncommon and decisions are made individually, taking into account the cause of failure, the person's overall health, and donor availability.

Will my underlying disease come back in the new lungs?

For most conditions, the underlying lung disease does not recur in the donor lungs. A small number of conditions, such as sarcoidosis, can sometimes return in transplanted lungs, but this is uncommon and not always clinically significant.

Can I be a living donor for a lung transplant?

Living-donor lung transplantation, in which lobes of the lung are taken from two living donors, has been performed in a small number of countries and centres. In most parts of the world today, lung transplants come from deceased donors. Your transplant team can explain what options apply in your situation.

Conclusion

A lung transplant is a major step in a long medical journey. It is offered when other treatments have reached their limit, and for the right person at the right time it can transform what daily life feels like — restoring breath, energy, and possibility. It is also a lifelong commitment to medications, follow-up, and careful self-care.

The decisions ahead — whether to pursue transplant, when, and how to prepare — are best made in close partnership with a transplant team that knows your specific condition, your overall health, and your goals. Understanding what the journey involves is part of that partnership. The clearer the picture you have, the more confidently you can take each step that follows.