Robotic Cardiac Surgery

Introduction

If your doctor has spoken to you about heart surgery, you may have heard about a newer way of operating called robotic cardiac surgery. Instead of opening the chest through a long cut in the breastbone, the surgeon works through several small openings between the ribs, using robotic arms and a high-definition camera. The surgeon controls every movement from a console nearby.

This article is written for people who already know they need, or may need, heart surgery and want to understand what the robotic approach involves. It explains how robotic cardiac surgery works, which heart problems it can treat, who is suitable for it, how to prepare, what the operation and recovery look like, and what the risks are.

Robotic cardiac surgery is a real advance for selected patients, but it is not the right choice for every heart condition or every person. The decision about whether to operate, and which approach to use, is made by your cardiac surgeon after careful assessment of your heart, your anatomy, and your overall health.

What Is Robotic Cardiac Surgery?

Robotic cardiac surgery is a form of minimally invasive heart surgery. “Minimally invasive” means the operation is done through small incisions rather than a large one. In the robotic approach, the surgeon does not stand directly over the patient holding instruments. Instead, the surgeon sits at a console a few feet from the operating table and controls thin robotic arms that hold the surgical instruments and a camera. These arms enter the chest through openings that are usually around 1–2 centimetres in size, made between the ribs on the side of the chest.

Chest wall incision comparison showing: ① traditional median sternotomy scar down the breastbone, ② small robotic port incisions between the ribs on the right side.

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

The robot does not make any decisions and does not move on its own. It is a tool. Every cut, every stitch, and every movement is directed by the surgeon’s hands and feet at the console. The robotic system translates the surgeon’s natural hand movements into very fine, steady movements of the instruments inside the chest. It also filters out small tremors and allows the surgeon to work in tight spaces that are difficult to reach with standard long instruments.

The most widely used robotic platform for cardiac surgery is the da Vinci surgical system. A second surgeon or assistant stays at the patient’s side throughout the operation to change instruments, manage the chest, and step in if anything needs to be done by hand.

It is helpful to understand that robotic cardiac surgery is an approach, not a single operation. Several different heart procedures can be done robotically, and the principles — what is being repaired, how the heart is supported during surgery, what the long-term goal is — are the same as in traditional open surgery. The difference lies in how the surgeon reaches the heart and how the chest is treated afterwards.

How Robotic Heart Surgery Works

To understand robotic cardiac surgery, it helps to picture the operating room. The patient lies on the operating table under general anaesthesia. Several small openings are made on the right side of the chest, between the ribs. Through these openings, the surgical team places:

• A high-definition 3D camera that gives the surgeon a magnified, three-dimensional view of the heart on the console screen
• Two or more robotic arms that hold delicate instruments such as graspers, scissors, needle holders, and energy devices
• A working port through which the bedside assistant can pass sutures, gauze, or additional instruments

For most robotic heart procedures, the heart needs to be stopped or slowed so that the surgeon can work on it safely. This is done using a heart-lung machine, also called cardiopulmonary bypass, which temporarily takes over the work of the heart and lungs. In robotic surgery, this machine is usually connected through small tubes placed in blood vessels in the groin rather than directly through the chest.

Once the heart is supported by the machine and the surgical view is set up, the surgeon moves to the console. There, the surgeon’s hands sit inside controllers that look a little like advanced joysticks. The console screen shows a magnified view of the inside of the chest. Foot pedals control the camera and the energy instruments. The surgeon performs the repair or bypass step by step, the same way it would be done in open surgery, but through small incisions.

Operating room layout for robotic cardiac surgery showing: ① surgeon console, ② robotic arm tower, ③ patient on operating table, ④ bedside assistant, ⑤ heart-lung machine.

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

After the heart work is complete, the heart is restarted, the heart-lung machine is gradually disconnected, the instruments are withdrawn, and the small incisions are closed with stitches. The breastbone is not cut.

Heart Procedures That Can Be Performed Robotically

Robotic techniques are used for selected cardiac operations. Not every heart condition can be treated this way, but several important procedures are now well-established in experienced centres.

Mitral Valve Repair

The mitral valve sits between the two left chambers of the heart. When it leaks or does not close properly — a condition called mitral regurgitation — it may need to be repaired. Robotic mitral valve repair is one of the most established uses of robotic cardiac surgery, particularly in patients with degenerative mitral valve disease. Major cardiac surgical societies recognise that, in high-volume centres with experienced teams, robotic mitral valve repair can achieve repair rates and long-term durability comparable to traditional open repair.

Cross-section of the heart showing: ① left atrium, ② mitral valve leaflets, ③ left ventricle, ④ aortic valve, ⑤ regurgitation jet indicating valve leakage.

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

Mitral Valve Replacement (Selected Cases)

If the mitral valve is too damaged to be repaired, it may need to be replaced. Mitral valve replacement can be done robotically in selected patients, although repair is preferred whenever it is feasible.

Tricuspid Valve Repair

The tricuspid valve, on the right side of the heart, can also become leaky, particularly when there is long-standing mitral valve or lung disease. Tricuspid valve repair is sometimes done robotically, often at the same time as mitral valve surgery.

Single-Vessel Coronary Artery Bypass (Robotic CABG)

In coronary artery disease, one or more arteries supplying the heart muscle become narrowed or blocked. Bypass surgery uses another vessel to carry blood around the blockage. When only one artery — typically the left anterior descending (LAD) artery — needs bypassing, the procedure can sometimes be done robotically. The internal mammary artery, which runs along the inside of the chest wall, is harvested through the small incisions and connected to the coronary artery beyond the blockage. For patients with multi-vessel disease, traditional open bypass surgery (CABG) remains the standard approach.

Atrial Septal Defect (ASD) Closure

An atrial septal defect is a hole in the wall between the two upper chambers of the heart, usually present from birth. Many ASDs can be closed using a catheter-based device, but some require surgery. When surgery is needed, a robotic approach is one option in suitable adults and adolescents.

Removal of Cardiac Tumours

Atrial myxomas are non-cancerous tumours that grow inside the upper chambers of the heart. They are removed surgically, and in selected patients this can be done robotically.

Other Procedures

In some centres, additional procedures such as surgical treatment of atrial fibrillation (a maze-type procedure) and closure of the left atrial appendage are also performed robotically, often alongside valve surgery.

Operations that generally require traditional open surgery include emergency heart surgery, complex multi-vessel bypass, aortic valve replacement (in most cases), surgery on the large blood vessels of the chest such as the aorta, and many complex congenital heart procedures.

Who Is a Candidate for Robotic Cardiac Surgery?

Eligibility for robotic cardiac surgery depends on several factors that the surgical team will assess in detail. Broadly, patients more likely to be considered include those who:

• Have a heart condition that matches one of the established robotic procedures (such as isolated mitral valve disease)
• Are otherwise in reasonable general health
• Have adequate lung function to tolerate the way the lung is briefly deflated during the operation
• Do not have heavy calcium build-up in the chest wall, the aorta, or the leg arteries used for the heart-lung machine
• Have not had multiple previous chest or heart surgeries that could make access difficult
• Have a body shape that allows safe access between the ribs

Situations where a robotic approach may not be suitable include:

• Emergency surgery
• Severe disease of the aorta or significant calcification
• Complex multi-vessel coronary disease needing several bypasses
• Severe lung disease
• Significant deformity of the chest wall
• Some cases with extensive scarring from prior chest surgery

Before any decision is made, you will undergo detailed tests so that your surgeon can judge whether your anatomy and condition are suited to a robotic approach. If the team feels the robotic route would compromise safety or the quality of the repair, a different approach — minimally invasive non-robotic, or traditional open surgery — will be advised.

Alternatives to Robotic Cardiac Surgery

Depending on the underlying heart condition, several alternatives exist. Knowing what they are makes the conversation with your surgeon clearer.

Traditional Open-Heart Surgery (Median Sternotomy)

This is the long-established approach, used worldwide for decades. The surgeon opens the chest through a vertical cut down the centre of the breastbone (sternum). It gives the widest view of the heart and is suitable for nearly every type of cardiac surgery, including emergency, complex, and multi-vessel cases. Recovery is longer and the chest scar is larger, but for many conditions it remains the safest and most effective approach.

Minimally Invasive Non-Robotic Surgery

Between traditional surgery and robotic surgery sits a group of minimally invasive techniques where the surgeon operates through a small incision between the ribs (mini-thoracotomy) or through a small upper-chest cut (mini-sternotomy), using long-handled instruments rather than a robot. These approaches share many of the recovery benefits of robotic surgery without needing the robotic platform, and they are widely available.

Catheter-Based (Percutaneous) Treatments

For some heart conditions, treatment can be delivered through a thin tube (catheter) passed through a blood vessel, avoiding surgery altogether. Examples include:

• Transcatheter aortic valve implantation (TAVI) for aortic valve disease in suitable patients
• Transcatheter edge-to-edge repair (TEER) for some patients with mitral valve leakage who are at high surgical risk
• Device closure of certain atrial septal defects
• Coronary angioplasty and stenting for many cases of coronary artery disease

These options are not direct substitutes for surgery in every patient. Whether they are appropriate is a clinical decision based on your specific anatomy, the severity of disease, your age, and other medical conditions. The heart team — cardiologist, cardiac surgeon, and imaging specialist — usually discusses your case together to choose the best route.

Robotic vs Traditional Heart Surgery

Both robotic and traditional open-heart surgery aim to fix the same underlying problem and achieve the same long-term result. The main differences are in how the heart is accessed and how the chest recovers.

Compared with traditional open surgery, robotic surgery typically involves:

• Several small incisions instead of a long cut down the chest
• No cutting of the breastbone, which means fewer restrictions on driving, lifting, and sleeping position after surgery
• Often less blood loss and a lower need for blood transfusion
• Less pain in the early weeks
• A shorter hospital stay and earlier return to light activities for many patients
• Smaller and less visible scars

What does not change between approaches:

• The goal of the operation — for example, a leaking valve still needs to be repaired thoroughly
• The need for general anaesthesia and the heart-lung machine in most cases
• The need for careful follow-up, medications, and cardiac rehabilitation
• Long-term outcomes — in suitable patients operated on by experienced teams, results are comparable

Traditional surgery still has clear advantages in certain situations: emergencies, multi-vessel coronary disease, complex valve disease involving more than one valve, surgery on the aorta, and many redo operations. The choice of approach is made by weighing the medical situation, the patient’s anatomy, and the surgical team’s experience with the specific operation.

Preparing for Robotic Cardiac Surgery

Preparation is similar to preparation for any major cardiac operation, with a few additional checks specific to the robotic approach.

Tests and Assessment

Before surgery you can expect:

• Echocardiography — an ultrasound of the heart to study the valves and pumping function. A transoesophageal echocardiogram (TEE), where the probe goes down the food pipe, gives a clearer view and is also used during the operation itself.
• Coronary angiography — a dye test of the coronary arteries, especially before valve surgery in older adults or before bypass surgery.
• CT scan of the chest — to look at the position and size of structures inside the chest, the condition of the aorta and other large vessels, and whether the chest anatomy is suitable for robotic instruments.
• Lung function tests — because the right lung is briefly deflated during robotic surgery on the heart, lung function needs to be adequate.
• Blood tests — including blood count, kidney and liver function, blood group, and clotting tests.
• Carotid Doppler — in selected older patients, to look at the neck arteries.
• Dental check — sometimes recommended before valve surgery to reduce infection risk.

Medications

Your team will review every medicine you take. Some will be continued, some adjusted, and some stopped temporarily — particularly blood thinners and certain diabetes medicines. Always follow the specific instructions given to you rather than changing medicines on your own.

Lifestyle Steps Before Surgery

In the weeks before surgery, doctors typically advise:

• Stopping smoking, ideally several weeks before the operation, because it reduces lung complications and improves wound healing
• Keeping diabetes, blood pressure, and weight as well-controlled as possible
• Treating any active infections, including dental and urinary infections
• Doing gentle activity if you are able, to keep your lungs and muscles in reasonable shape

The Day Before and the Morning of Surgery

You will be told when to stop eating and drinking, usually from midnight before surgery. A skin antiseptic wash may be advised. You may have a brief meeting with the anaesthesia team, the surgeon, and a nurse who will go over the plan and ask you to sign a consent form. This is a good time to ask any final questions.

What Happens During Robotic Cardiac Surgery

Six-stage sequence of a robotic cardiac surgery procedure: ① groin cannulation for heart-lung bypass, ② chest port incisions made between ribs, ③ robotic arms docked and camera inserted, ④ surgeon at console performing cardiac repair, ⑤ heart restarted and TEE check performed, ⑥ instruments withdrawn and incisions closed.

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

On the day of surgery, the steps usually follow this order:

1. Anaesthesia. You are taken to the operating room and given general anaesthesia. You will be fully asleep and feel nothing during the operation. A breathing tube is placed; a urinary catheter and several intravenous lines are inserted; a TEE probe is placed in the food pipe to image the heart.
2. Positioning. You are positioned with the right side of the chest tilted slightly upwards so the surgeon can access the heart through the right side. The skin is cleaned and draped.
3. Heart-lung machine setup. Small cuts are usually made in the groin to place tubes (cannulae) that connect to the heart-lung machine. This machine will support your circulation and oxygen levels while the surgeon works on the heart.
4. Small chest incisions. Several keyhole incisions, each about 1–2 cm, are made between the ribs on the right side of the chest. A slightly larger working port may also be used.
5. Docking the robot. The robotic arms are brought to the table and connected to the instruments and the camera. The surgeon moves to the console and sees a magnified 3D view of the inside of the chest.
6. The heart procedure. The heart is stopped (in most cases) and protected with a cold solution. The surgeon then performs the planned repair — for example, repairing a leaking mitral valve, sewing a bypass graft, or closing a hole in the heart.
7. Restarting the heart. Once the repair is complete, the heart is restarted, and the TEE is used to check that everything is working as intended.
8. Coming off the machine. The heart-lung machine is gradually disconnected, and the surgeon confirms that the heart is pumping well on its own.
9. Closing. The instruments are removed, the small incisions are closed with stitches, and dressings are applied. A small drainage tube is usually left in the chest for a day or two.

The total operating time depends on the procedure and the patient’s anatomy, often ranging from three to six hours. Occasionally — for example, if bleeding is difficult to control or the anatomy turns out to be different from expected — the surgical team may decide to convert to traditional open surgery for safety. This is not a failure; it is a planned safety step that you will be informed about before surgery as part of consent.

Recovery and Healing

Typical recovery timeline after robotic cardiac surgery: ① hours 1–6 ICU monitoring and breathing tube removal, ② days 1–2 chest drain removed, mobilising with physiotherapist, ③ days 3–5 transfer to ward and hospital discharge, ④ weeks 1–2 light self-care and gentle walking at home, ⑤ weeks 4–6 gradual return to driving and light work, ⑥ weeks 6–12 cardiac rehabilitation and follow-up echocardiogram.

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

In the Hospital

After the operation, you will be moved to the intensive care unit (ICU), where the breathing tube is usually removed within a few hours once you are awake and stable. The chest drain and urinary catheter are typically removed in the next day or two. Most patients spend one to two days in the ICU and then move to a regular cardiac ward. Total hospital stay is commonly three to five days, but may be longer depending on the specific procedure and any complications.

While in hospital, you can expect:

• Regular monitoring of heart rhythm, blood pressure, and oxygen levels
• Pain control, which is usually less intensive than after open surgery
• Breathing exercises and early walking with help from a physiotherapist
• Gradual return to a normal diet
• Adjustment of medications, including starting blood thinners if a mechanical valve has been placed

The First Few Weeks at Home

Because the breastbone is not cut in robotic surgery, the activity restrictions are usually less strict than after open heart surgery. Most people can:

• Walk and do gentle self-care from the first week
• Return to light daily activities within one to two weeks
• Gradually increase activity over four to six weeks
• Resume driving earlier than after open surgery, once cleared by the surgeon

Some soreness on the right side of the chest, particularly between the ribs, is normal for several weeks. Heavier exertion, swimming, and contact activities are usually avoided until your surgical team gives clearance.

Cardiac Rehabilitation

Cardiac rehabilitation — a structured programme of supervised exercise, education, and lifestyle support — is recommended after most cardiac surgery, including robotic surgery. It helps your heart and body recover safely, improves long-term outcomes, and gives you confidence in returning to normal life. Programmes usually start a few weeks after surgery and run over several weeks.

Follow-up

You will have follow-up visits with your surgeon and cardiologist, typically at one to two weeks for wound check, around six weeks for overall recovery, and then at regular intervals. Echocardiography is repeated to confirm that valve repairs or replacements are working well. Medication may be adjusted as you recover.

Risks and Complications

Robotic cardiac surgery is generally safe in experienced hands, but like any major heart operation, it carries risks. Understanding them is part of giving informed consent.

General risks of cardiac surgery include:

• Bleeding — sometimes requiring blood transfusion or, rarely, a second operation
• Infection — of wounds, the chest, or, rarely, the new valve
• Heart rhythm problems — particularly atrial fibrillation, which is common after heart surgery and usually treatable
• Stroke — uncommon but serious
• Kidney injury — often temporary
• Lung complications — including fluid around the lung or pneumonia
• Reaction to anaesthesia

Risks specific to or more relevant in the robotic approach include:

• Conversion to open surgery — if the robotic approach becomes unsafe or inadequate, the surgeon will open the chest. The chance of this is small in experienced centres but never zero.
• Longer time on the heart-lung machine — robotic procedures often take a little longer than the equivalent open procedure, though this gap narrows with team experience.
• Groin vessel complications — because the heart-lung machine is connected through groin vessels, there is a small risk of injury to those vessels.
• Lung issues from one-lung ventilation — the right lung is partially deflated during the operation, which is generally safe but needs adequate lung reserve.

The exact level of risk depends on your age, the specific procedure, your overall health, and the experience of the surgical team. Your surgeon should walk you through your individual risk profile before you consent to surgery.

Life After Robotic Cardiac Surgery

For most patients, the goal of cardiac surgery is not only to fix the immediate problem but to restore good long-term heart health. Life after robotic cardiac surgery involves several elements.

Medications

You may need to continue or start medications such as:

• Blood pressure medicines
• Cholesterol-lowering medicines, especially after bypass surgery
• Aspirin or other antiplatelet medicines
• Blood thinners (anticoagulants) — particularly after a mechanical valve replacement or if you have atrial fibrillation
• Heart rate or rhythm medicines

Adjusting these is part of routine follow-up. Do not stop or change cardiac medicines on your own.

Lifestyle

Doctors typically encourage:

• A heart-healthy diet, low in saturated fats and added salt
• Regular physical activity, built up gradually after surgery
• Stopping smoking permanently
• Keeping weight, blood pressure, blood sugar, and cholesterol within target ranges
• Limiting alcohol
• Managing stress and sleep

Infection Precautions

After valve surgery, you may be advised about precautions to reduce the risk of infection of the heart valve (endocarditis), including good dental hygiene and regular dental check-ups. Your doctor will let you know whether antibiotics are needed before dental work.

Long-term Outlook

In suitable patients, long-term outcomes after robotic cardiac surgery are comparable to those after traditional surgery for the same condition. Many patients return to full work and recreational activities. Long-term success depends on the underlying condition, the quality of the repair or replacement, control of risk factors, and regular follow-up.

Robotic Cardiac Surgery in Children

Most children with heart conditions are treated either with catheter-based procedures or with traditional open surgery, because their hearts are small and many congenital heart problems are complex. Robotic cardiac surgery is used only in a small number of carefully selected paediatric and adolescent patients, usually older children and teenagers with anatomy that resembles adults — for example, for closure of certain atrial septal defects.

For most children, the right approach is decided by a specialised paediatric cardiac team that considers the child’s age, weight, and the specific defect. Whether robotic surgery is an option for a particular child should be discussed with a paediatric cardiac surgeon experienced in the relevant procedures.

Frequently Asked Questions

Is robotic heart surgery safer than open-heart surgery?

In suitable patients operated on by experienced teams, robotic surgery and open surgery have similar safety and similar long-term outcomes. Robotic surgery offers advantages in recovery, pain, and scarring. Open surgery remains safer in emergencies, in complex multi-vessel disease, and where the anatomy is not suitable for a robotic approach. Saying one is universally “safer” than the other is not accurate; the safest approach is the one that fits your specific situation.

Does the robot perform the surgery on its own?

No. The robot does not make decisions or move on its own. Every movement of the robotic arms is directly controlled by the surgeon from the console. The robot is a sophisticated instrument that translates the surgeon’s movements into very fine, steady movements inside the chest.

Can every type of heart surgery be done robotically?

No. Robotic techniques are used for selected procedures, mainly certain valve repairs, single-vessel bypass, some atrial septal defects, and removal of certain heart tumours. Operations such as multi-vessel bypass, surgery on the aorta, most aortic valve replacements, and emergency cardiac surgery are usually done through traditional approaches.

How long will I be in hospital?

Many patients stay in hospital for three to five days after robotic cardiac surgery, with one to two of those days in the ICU. Length of stay depends on the procedure, your recovery, and any complications.

When can I return to work?

This depends on the type of work and the type of operation. People with desk-based work often return within four to six weeks; those with physically demanding work may need longer. Your surgeon will advise based on your individual recovery.

Will I have visible scars?

You will have several small scars on the right side of the chest, each usually 1–2 cm, and small scars in the groin from the heart-lung machine connections. These are far less prominent than the long mid-chest scar after traditional open heart surgery and usually fade over months.

What if the surgeon needs to switch to open surgery during the operation?

If at any point the robotic approach is felt to be unsafe or inadequate, the surgical team will convert to traditional open surgery to complete the operation. This is a planned safety option, not an emergency, and you will be informed about this possibility as part of consent. The chance of conversion is small in experienced centres.

How do I know if I am a good candidate?

Suitability for robotic cardiac surgery depends on your heart condition, your anatomy, your lung function, prior surgeries, and overall health. The only reliable way to know is a thorough evaluation by a cardiac surgeon with experience in robotic techniques, supported by imaging such as echocardiography and a CT scan of the chest.

Conclusion

Robotic cardiac surgery is one of several ways to treat heart conditions that need surgical repair. For carefully selected patients — particularly those with isolated mitral valve disease, certain other valve problems, single-vessel coronary disease, and some atrial septal defects — it offers a minimally invasive route to the same long-term goals as traditional open surgery, with smaller incisions, less pain, and faster recovery.

It is not the right approach for every heart condition or every person. The choice between robotic, minimally invasive non-robotic, traditional open surgery, and catheter-based treatments is a clinical decision that depends on the specific diagnosis, your anatomy, your overall health, and the experience of the surgical team. Understanding what robotic cardiac surgery is, what it can and cannot do, and what recovery looks like helps you have a clearer, more informed conversation with your cardiac surgeon as you plan the next phase of your care.