Heart Valve Repair Surgery

Introduction

If you or a family member has been told that a heart valve is not working properly and that surgery is being considered, you are likely trying to understand what comes next. Heart valve repair surgery is one of the main options for treating valve disease. Unlike valve replacement, which removes the diseased valve and puts in an artificial one, valve repair keeps the patient’s own valve and rebuilds it so that it opens and closes normally again.

This guide is written for patients and families who are planning treatment. It explains what heart valve repair surgery is, why doctors may recommend it instead of replacement, the different techniques and surgical approaches, how to prepare, what happens during the operation, recovery, risks, and what life looks like afterwards. It is meant to support the conversation with your cardiac team, not to replace it.

What Is Heart Valve Repair Surgery?

The heart has four valves — the mitral, tricuspid, aortic, and pulmonary valves. They act like one-way doors, opening to let blood flow forward and closing to stop it from leaking backward. When a valve becomes diseased, it may not open fully (called stenosis, or narrowing) or it may not close fully (called regurgitation, or leaking). Over time this makes the heart work harder, which can lead to breathlessness, fatigue, swelling, irregular heart rhythms, and heart failure.

Anatomy of the human heart showing: ① mitral valve, ② tricuspid valve, ③ aortic valve, ④ pulmonary valve, ⑤ left ventricle, ⑥ right ventricle.

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

Heart valve repair surgery is a cardiac operation in which the surgeon reconstructs the damaged valve so it can function properly again. The patient’s own valve tissue is preserved. Small rings, sutures, or patches of tissue may be used to reinforce or reshape parts of the valve.

The goals of valve repair are to:

• Restore normal blood flow through the heart
• Reduce symptoms such as breathlessness, fatigue, and palpitations
• Protect the heart muscle from long-term damage
• Preserve the patient’s own valve, which often means fewer long-term medications

Repair is most often performed on the mitral valve, where techniques are highly developed. It is also used in many cases of tricuspid valve disease, and in selected cases of aortic valve disease. The pulmonary valve is repaired less often and is more relevant in congenital heart disease.

Valve Repair Versus Valve Replacement

One of the most important decisions in valve surgery is whether the valve can be repaired or whether it needs to be replaced. This decision is made by the cardiac team after careful imaging and assessment.

Why Major Societies Favour Repair When Feasible

Current guidelines from the American Heart Association, the American College of Cardiology, and the European Society of Cardiology favour repair over replacement when the valve anatomy allows it, particularly for the mitral valve. Repair has several advantages:

• It preserves the patient’s own valve tissue, which behaves more naturally than any artificial valve
• It tends to maintain better heart muscle function over time
• It carries a lower risk of valve infection (endocarditis) compared with prosthetic valves
• Most patients do not need lifelong blood-thinning medication, unlike those with mechanical valve replacements

When Replacement Is Considered Instead

Replacement may be the safer or more durable option when:

• The valve is heavily calcified (hardened with calcium deposits)
• The valve tissue is too damaged to be reconstructed
• The disease is caused by advanced rheumatic heart disease, where repair often does not last
• A previous repair has failed

In some cases, the surgeon may plan a repair but find during surgery that replacement is necessary. The consent discussion before surgery usually covers both possibilities so that the surgeon can do whichever is in the patient’s best interest at the time.

Conditions Treated with Heart Valve Repair

Valve repair is used for several specific valve conditions. The most common are described below.

Mitral Valve Regurgitation

The mitral valve sits between the left upper chamber (left atrium) and the left lower chamber (left ventricle). When it leaks, blood flows backward into the left atrium with each heartbeat. The most common cause in adults is degenerative mitral valve disease, often involving prolapse, where part of the valve bulges backward. Repair is highly effective for this condition and is the approach favoured by major guidelines when the anatomy is suitable.

Mitral Valve Prolapse

Mitral valve prolapse means one or both flaps (leaflets) of the mitral valve bulge into the upper chamber when the heart contracts. Many people with prolapse never need surgery. When prolapse causes significant leakage, repair is usually the preferred surgical option.

Tricuspid Valve Regurgitation

The tricuspid valve sits between the right upper and right lower chambers. It often leaks when other parts of the heart become enlarged — for example, after long-standing mitral valve disease or atrial fibrillation. Tricuspid regurgitation is commonly addressed with repair, often during the same operation as mitral valve surgery.

Selected Aortic Valve Disease

Aortic valve repair is less common than mitral repair. It is used in certain younger patients with aortic regurgitation, especially those with a bicuspid aortic valve (a valve that has two flaps instead of three from birth) or where the valve is leaking because of dilation of the aortic root.

Some Forms of Congenital Valve Disease

Children and young adults born with heart valve abnormalities may also undergo repair. This is covered separately below.

Types of Heart Valve Repair Techniques

Valve repair is not a single technique. The surgeon uses one or several methods, chosen based on what is wrong with the valve.

Annuloplasty

The valve sits within a ring of fibrous tissue called the annulus. In many leaking valves, this ring becomes stretched. In annuloplasty, the surgeon places a flexible or semi-rigid ring or band around the annulus to bring it back to the correct size and shape so that the valve leaflets can meet and close properly. Annuloplasty is used in almost all mitral and tricuspid valve repairs.

Key mitral valve repair techniques shown in three panels: ① annuloplasty ring placed around the valve annulus, ② triangular leaflet resection with suture closure, ③ artificial chordae tendineae attached to the leaflet.

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

Leaflet Repair

If a valve leaflet is too long, torn, or has extra tissue that prevents proper closing, the surgeon can reshape it. This may involve removing a small wedge of tissue and stitching the edges back together, or reinforcing a thinned area with a small patch of tissue (often from the lining of the heart or a treated tissue graft).

Chordal Repair or Replacement

The valve leaflets are tethered by thin cords called chordae tendineae, which act like the strings of a parachute. When these cords stretch or break, the leaflet flops backward. The surgeon can shorten them, reposition them, or replace them with artificial cords made of strong, flexible material. Artificial chord placement has become a key technique in modern mitral valve repair.

Commissurotomy

When valve leaflets have become fused at their edges — most often because of rheumatic heart disease — the surgeon can carefully separate them to allow the valve to open more fully. This is mainly used for narrowed valves.

Patch Repair

If there is a hole in a leaflet or a defect close to the valve, a small patch of tissue may be used to close it.

In a single operation, the surgeon often combines several of these techniques to get the best result.

Who Is a Candidate for Heart Valve Repair Surgery?

Whether valve repair is a suitable option depends on the type and severity of valve disease, the condition of the valve itself, and the patient’s overall health. Imaging — particularly transthoracic and transoesophageal echocardiography — plays a central role in this assessment.

Valve repair is generally considered when:

• The valve disease is severe enough to cause symptoms or to start affecting heart function
• The valve anatomy is favourable — the leaflets and supporting structures can be reconstructed
• The disease is detected before the heart muscle is permanently damaged
• The patient’s overall health makes surgery a reasonable option

Guidelines also support surgery in some patients before symptoms develop, particularly when the leak is severe and the heart is beginning to enlarge, or when surgery is being done at an experienced centre with a high likelihood of successful repair. Whether and when to operate is a clinical decision made together with the cardiology and cardiac surgery teams.

Alternatives to Heart Valve Repair Surgery

Open heart valve repair is not the only option. Depending on the valve involved, the type of disease, and the patient’s overall risk, alternatives may include the following.

Medication and Watchful Monitoring

In mild or moderate valve disease without symptoms, medication and regular monitoring with echocardiography are often the first step. Medications do not fix the valve, but they can ease symptoms and protect the heart while doctors watch how the disease changes over time.

Valve Replacement Surgery

When repair is not feasible, the valve can be replaced with a mechanical valve (made of durable materials, usually requiring lifelong blood thinners) or a biological valve (made from animal tissue, often not requiring long-term blood thinners but with a more limited lifespan). The choice depends on age, lifestyle, and other medical factors.

Transcatheter Valve Procedures

For some patients, valve disease can be treated without open surgery, using thin tubes (catheters) passed through a blood vessel:

• Transcatheter Edge-to-Edge Repair (TEER) for the mitral and tricuspid valves uses a clip-like device to bring the leaflets together and reduce leakage. It is commonly considered for patients at higher surgical risk.
• Transcatheter Aortic Valve Implantation (TAVI/TAVR) is a catheter-based valve replacement used mainly for aortic stenosis in older or higher-risk patients.
• Balloon valvuloplasty uses a balloon to stretch open a narrowed valve and is mainly used in selected cases of mitral or pulmonary stenosis, and in some children.

Comparison of surgical access approaches: ① full median sternotomy incision, ② right mini-thoracotomy incision, ③ robotic port sites on the chest wall.

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

Heart valve repair can be performed using different surgical approaches. The choice depends on the valve involved, the patient’s anatomy, other heart conditions that need to be treated at the same time, and the experience of the surgical team.

Open Heart Surgery Through a Sternotomy

The traditional approach is through a median sternotomy, an incision down the centre of the chest that allows the surgeon to divide the breastbone and gain full access to the heart. This approach is well established, gives excellent exposure of all four valves, and is often preferred when several procedures are being combined — for example, valve repair together with coronary artery bypass or surgery on more than one valve.

Minimally Invasive Valve Repair

In selected patients, valve repair can be done through smaller incisions:

• Right mini-thoracotomy: a small incision on the right side of the chest, often used for mitral and tricuspid valve repair
• Partial upper sternotomy: a smaller cut into the upper part of the breastbone, sometimes used for aortic valve surgery

Possible advantages include smaller scars, less blood loss, less pain after surgery, and a shorter overall recovery for many patients. Not everyone is suitable, and outcomes depend heavily on the team’s experience with the approach.

Robotic-Assisted Valve Repair

Some specialised centres offer robotic-assisted mitral valve repair, where the surgeon operates through small ports in the chest using a robotic system that translates hand movements into very precise instrument movements inside the heart. This approach is technically demanding and is used in carefully selected patients.

How the Approach Is Chosen

The cardiac team weighs the type of valve disease, other procedures needed, body size and shape, previous chest surgery, lung function, and the team’s experience. The most important thing is not the size of the incision, but that the valve is repaired well and durably.

Preparing for Heart Valve Repair Surgery

Preparation begins weeks before the operation. Good preparation reduces risks and supports a smoother recovery.

Pre-Operative Evaluation

Most patients undergo:

• Echocardiography — usually both transthoracic (probe on the chest) and transoesophageal (probe in the food pipe under sedation) to look at the valve in detail
• Blood tests — including kidney and liver function, blood count, clotting tests, and blood typing
• ECG (electrocardiogram) and chest X-ray
• Coronary angiography in patients above a certain age or with risk factors, to check whether the coronary arteries also need treatment
• CT scan of the chest in some cases, especially when minimally invasive surgery is planned
• Dental review to treat any active dental infection before surgery, because dental bacteria can affect heart valves

Medication Review

Some medications — especially blood thinners, anti-platelet drugs, and certain diabetes medications — need to be stopped or adjusted before surgery. This is always done under the cardiology team’s guidance. Do not stop or change medications on your own.

Lifestyle Steps Before Surgery

• Stop smoking as far in advance as possible. Even a few weeks without smoking improves lung function and wound healing.
• Maintain good nutrition. A balanced diet supports recovery.
• Stay as active as you safely can, following your doctor’s advice. Being physically prepared (sometimes called “prehabilitation”) helps recovery.
• Manage other conditions such as diabetes, high blood pressure, and anaemia.

Mental and Practical Preparation

Heart surgery is a major life event. Understanding what will happen, asking questions, and arranging practical support at home for the recovery weeks all help. Many people find it useful to talk to someone who has had similar surgery, or to a counsellor if anxiety is high.

What Happens During Heart Valve Repair Surgery

Heart valve repair is performed under general anaesthesia by a cardiac surgery team that includes the surgeon, anaesthetist, perfusionist (who runs the heart-lung machine), nurses, and technologists.

Inside the Operating Theatre

1. You are given general anaesthesia and a breathing tube is placed.
2. Monitoring lines are placed in blood vessels to track blood pressure and other vital signs.
3. A transoesophageal echocardiogram probe is usually placed so the team can image the valve throughout the surgery.
4. The chest is opened, either through a sternotomy or a smaller incision, depending on the planned approach.
5. For most valve repairs, the patient is connected to a heart-lung machine that temporarily takes over the work of the heart and lungs. The heart is stopped with a special solution so the surgeon can work on it precisely.
6. The surgeon opens the heart to reach the affected valve, examines it carefully, and performs the chosen repair techniques — for example, placing an annuloplasty ring, repairing leaflets, and placing artificial chordae as needed.
7. The repair is tested while the heart is still stopped, and again after the heart restarts, using the echocardiogram to check that the valve is opening and closing properly with no significant leak.
8. If the repair is satisfactory, the heart is restarted, the patient is gradually weaned off the heart-lung machine, and the chest is closed.

Heart-lung bypass circuit during cardiac surgery showing: ① venous blood drainage cannula, ② oxygenator unit, ③ pump, ④ arterial return cannula, ⑤ cardioplegia delivery to the stopped heart.

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

The operation usually takes several hours. The exact time depends on the complexity of the valve disease, the approach used, and whether other procedures (such as bypass surgery, ablation for atrial fibrillation, or repair of more than one valve) are performed at the same time.

Recovery After Heart Valve Repair Surgery

Heart valve repair recovery timeline: ① ICU (days 1–2), ② cardiac ward (days 2–7), ③ first weeks at home (weeks 1–6), ④ cardiac rehabilitation (weeks 4–12), ⑤ return to full normal activities (weeks 6–12).

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

Intensive Care Unit

After surgery, you are transferred to the cardiac intensive care unit (ICU). The breathing tube is usually removed within a few hours once you are stable and awake. You will have several monitoring lines, chest drains to remove fluid, a urinary catheter, and a pacing wire in case the heart rhythm needs support. Most patients stay in ICU for one to two days, sometimes longer.

Cardiac Ward

You are then moved to the cardiac ward, where you start to walk short distances, perform breathing exercises to keep the lungs clear, and gradually eat normally. Chest drains and lines are removed as healing progresses. The total hospital stay is typically around five to seven days, depending on recovery and the surgical approach.

The First Weeks at Home

Once home, expect to feel tired. Walking is encouraged and is the foundation of early recovery — short walks several times a day, gradually increased as tolerated. Other points usually include:

• Avoiding heavy lifting and pushing or pulling for several weeks, especially after a sternotomy, to allow the breastbone to heal
• Sleeping on the back at first, with extra pillows for comfort
• Looking after the surgical wound and watching for signs of infection (redness, fluid, fever)
• Pain control, usually with simple medications as prescribed
• Avoiding driving for several weeks — the exact time depends on local advice and your surgeon’s instructions

Cardiac Rehabilitation

A structured cardiac rehabilitation programme is strongly supported by current guidelines after most heart surgery. It usually combines:

• Supervised exercise that is safely matched to your stage of recovery
• Education on heart-healthy eating, medications, and risk factor control
• Emotional support and counselling, since anxiety and mood changes are common after heart surgery

Cardiac rehab improves fitness, supports return to normal activities, and helps protect long-term heart health.

Returning to Normal Life

Most patients return to most normal daily activities by around six to eight weeks. Return to work depends on the type of job — office-based work is generally possible earlier than physically demanding work. Sexual activity is usually possible within a few weeks once comfort and stamina allow. Air travel after heart surgery is usually advised after a defined waiting period and after a check by your team.

Risks and Complications

Heart valve repair is performed millions of times worldwide and is generally safe when carried out by experienced teams. As with any major surgery, there are risks. Knowing about them in advance helps with informed decisions and recognising problems early.

Possible risks include:

• Bleeding during or after surgery, sometimes requiring transfusion
• Infection at the wound site or, less commonly, of the valve itself (endocarditis)
• Abnormal heart rhythms, especially atrial fibrillation, which is common after heart surgery and may need medication or other treatment
• Need for a permanent pacemaker in a small number of cases
• Stroke — uncommon but a recognised risk of any heart surgery
• Kidney problems, usually temporary
• Lung problems such as collapse of small areas of lung or fluid around the lungs
• Persistent or recurrent valve leak — sometimes the repair does not hold completely, and a further procedure or replacement may be needed
• Conversion from repair to replacement during the same operation if the valve cannot be reliably reconstructed

The overall level of risk depends on age, heart function, lung and kidney function, other medical conditions, the urgency of surgery, and the experience of the centre.

Life After Heart Valve Repair Surgery

One of the main advantages of valve repair is that it preserves the patient’s own valve and often leads to a near-normal lifestyle once recovery is complete.

Symptom Improvement

Many people notice clear improvement in breathlessness, fatigue, and exercise tolerance within a few months. The heart muscle, which may have been working under strain for years, often improves once the leak or narrowing is corrected.

Medications

Long-term medication depends on the individual situation:

• Many patients who have had valve repair do not need lifelong blood-thinning medication, unlike most patients with mechanical valve replacements.
• Short-term blood thinners may be prescribed for the first few weeks or months after surgery.
• Patients who develop atrial fibrillation may need long-term blood thinners to reduce stroke risk.
• Other medications — for blood pressure, cholesterol, or heart failure — depend on the overall heart condition.

Follow-Up

Lifelong follow-up with a cardiologist and regular echocardiograms is standard after valve repair. This allows the team to check that the repaired valve continues to work well, watch for any recurrent leak, and monitor heart function over time.

Endocarditis Prevention

Patients with repaired valves can still develop infection of the valve in rare cases. Good dental hygiene, regular dental checks, and early treatment of infections are important. Some patients may be advised to take antibiotics before certain dental or medical procedures — this is decided individually based on guidelines and the type of repair.

Long-Term Durability

For mitral valve repair, long-term durability in experienced centres is generally very good, with most patients free from repeat operation for many years after surgery. Durability depends on the cause of valve disease, the techniques used, and the experience of the team. Results for tricuspid and aortic valve repair vary more and are discussed individually with the surgeon.

Heart Valve Repair in Children

Heart valve repair is also performed in children, often for congenital (present from birth) valve abnormalities or for valve damage from rheumatic heart disease, which remains an important cause of valve disease in many parts of the world.

Why Repair Is Often Preferred in Children

For children, preserving the natural valve has special advantages:

• A repaired valve can grow with the child, while an artificial valve cannot
• It usually avoids long-term blood thinners, which are particularly difficult to manage in active children
• It may delay or avoid the need for replacement, which would otherwise require further operations as the child grows

Conditions Commonly Treated

• Congenital mitral valve abnormalities
• Atrioventricular septal defects involving valve tissue
• Congenital aortic valve problems, including some bicuspid valves
• Pulmonary valve disease in certain congenital heart conditions
• Rheumatic valve disease, where repair is considered when the valve tissue is suitable

The Care Team

Children undergoing valve surgery are usually cared for by a paediatric cardiac team in a specialised centre. Follow-up extends through childhood and into adulthood, because some children will need further procedures over time as they grow or as the valve changes.

Frequently Asked Questions

Is heart valve repair better than replacement?

Major societies generally favour repair over replacement when the valve anatomy allows it, especially for the mitral valve. Repair preserves the natural valve, often gives better long-term heart function, lowers the risk of valve infection, and usually avoids lifelong blood thinners. Replacement remains the right choice when the valve cannot be reconstructed reliably. The decision is made for each patient based on detailed imaging and surgical assessment.

How long does heart valve repair surgery take?

Most valve repair operations take several hours, including the time needed for anaesthesia, preparation, the surgery itself, and weaning off the heart-lung machine. The exact duration depends on the complexity of the repair and whether other procedures are done at the same time.

How long does recovery take?

Hospital stays are typically around five to seven days. Most patients return to their usual daily activities within about six to eight weeks. Full recovery, including return to demanding physical activity, can take a few months. Cardiac rehabilitation supports this process.

Will I need blood thinners after valve repair?

Many patients do not need lifelong blood thinners after valve repair, which is one of its main advantages over mechanical valve replacement. Short-term blood thinners are often used in the first weeks or months. Patients who have atrial fibrillation or other reasons for blood thinning may continue them long-term. Your cardiologist will explain what applies in your case.

Can a repaired valve fail later?

Yes, although in experienced centres the long-term durability of mitral valve repair is generally very good. A small number of patients develop recurrent leakage or other problems with the valve over time and may need a further operation or a transcatheter procedure. Regular follow-up with echocardiography helps detect any change early.

Will I be able to exercise and travel after surgery?

Most patients return to regular exercise and travel after recovery. Walking is the main activity in the early weeks. More vigorous exercise is gradually reintroduced, ideally as part of a cardiac rehabilitation programme. Air travel is usually possible after a defined waiting period and a check by the surgical or cardiology team.

Is minimally invasive or robotic valve repair safer than traditional surgery?

Minimally invasive and robotic approaches can offer smaller scars and faster early recovery for selected patients. They are not safer or more effective in every case, and outcomes depend heavily on the team’s experience with the technique. The most important factor is that the valve is repaired durably, not the size of the incision. Suitability is decided by the cardiac team.

Can heart valve repair be done at the same time as other heart surgery?

Yes. Valve repair is often combined with coronary artery bypass surgery, repair or replacement of another valve, surgery for atrial fibrillation, or closure of holes in the heart. Combining procedures avoids the need for separate operations.

Conclusion

Heart valve repair surgery is a well-established treatment that restores the function of a damaged heart valve while preserving the patient’s own tissue. For many patients with mitral valve disease, and for selected patients with tricuspid and aortic valve disease, repair is the approach favoured by current guidelines when the valve anatomy allows it.

The right choice of operation — repair or replacement, traditional or minimally invasive, surgical or transcatheter — depends on the type of valve disease, the patient’s anatomy and overall health, and the experience of the cardiac team. With careful planning, expert surgery, structured recovery, and lifelong follow-up, most patients return to active and full lives after heart valve repair.