MyCareQuestions Clinicians
Alessia Rossi, MD, MBSS
Essex Cardiothoracic Centre, London Bridge Hospital- HCA, The Wellington Hospital- HCA
Ishtiaq Ahmed, BSc (Hons) MBChB PhD FRCS (C-Th)
Royal Sussex County Hospital, London Bridge Hospital, Versorium Clinic Sussex
David Rose, MD, MBBS, PhD
Spire Manchester Hospital, Circle Health Group, Alexandra Hospital Manchester, Lancashire Cardiac Centre, Blackpool Victoria HospitalWhat is a Coronary Artery Bypass (CABG) Surgeon?
A coronary artery bypass (CABG) surgeon is a cardiac surgeon who specialises in operations that improve blood flow to the heart muscle when the coronary arteries have become narrowed or blocked. Patients often search for terms such as CABG surgeon, bypass surgeon, coronary artery bypass surgeon, or heart bypass surgeon. In practice, these searches usually point to the same type of specialist.
Most patients are referred after tests such as a coronary angiogram, CT coronary scan, echocardiogram or stress test show important coronary artery disease. The surgeon works closely with cardiologists, imaging specialists and the wider heart team to decide whether the best option is bypass surgery, stents, medication, or a combination of treatments.
The surgeon’s role is not simply to perform an operation. Good CABG care is about choosing the right patients for surgery, deciding how many arteries need bypass grafts, selecting the best blood vessels to use, and judging whether surgery offers a more durable or safer result than stents alone.
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Common conditions treated by a Coronary Artery Bypass (CABG) Surgeon
Coronary artery disease: this is narrowing or blockage in the arteries that supply blood to the heart muscle. It is the commonest reason for bypass surgery.
Left main stem disease: this affects the main artery that supplies a large part of the heart. It often needs specialist assessment because the risk can be high if the narrowing is severe.
Multivessel coronary artery disease: some patients have important narrowing in several coronary arteries at the same time. In this situation, bypass surgery may provide a more complete and durable way of restoring blood flow.
Severe angina despite treatment: some people continue to have chest pain, breathlessness or limited exercise tolerance despite tablets or previous procedures. Surgery may be considered when symptoms remain troublesome.
Coronary disease after a heart attack: some patients are referred after a heart attack if the pattern of blockages suggests that planned bypass surgery may improve longer-term blood flow and reduce future risk.
Complex coronary disease in diabetes: people with diabetes can develop more diffuse or challenging coronary disease, so the heart team may ask a bypass surgeon to assess whether CABG is the better long-term option.
Coronary disease needing combined heart surgery: some patients need bypass grafts as well as another operation, such as valve surgery or surgery on the aorta, during the same procedure.
Common procedures and treatments
Coronary artery bypass grafting (CABG): the surgeon uses a healthy blood vessel from the chest, arm or leg to create a new route for blood to flow around a blocked coronary artery.
Single, double, triple or quadruple bypass surgery: these terms describe how many coronary arteries need bypass grafts, rather than how serious the operation feels to the patient.
Arterial and vein graft selection: the surgeon may use the internal mammary artery from inside the chest, the radial artery from the arm, or a vein from the leg, depending on what offers the best long-term result.
On-pump CABG: many bypass operations are performed using the heart-lung machine so the surgeon can work in a still and controlled field.
Off-pump CABG: selected patients may be suitable for bypass surgery on the beating heart without the heart-lung machine, but this depends on anatomy, surgeon experience and the overall clinical picture.
Endoscopic vein or artery harvesting: in some centres, the blood vessel used for the bypass can be removed through smaller cuts rather than a long open incision in the leg or arm.
Combined CABG and valve or aortic surgery: if a patient also has valve disease or aortic disease, both problems may sometimes be treated in the same operation.
Heart team discussion of alternatives: in some patients, the team will also discuss stents, medication, risk-factor treatment and cardiac rehabilitation alongside surgery.
When should you see a Coronary Artery Bypass (CABG) Surgeon?
You may be referred if tests show left main stem disease, multivessel coronary artery disease, important blockages that are not ideal for stents, or coronary disease that is continuing to cause angina, breathlessness or reduced exercise tolerance.
A surgical opinion is also common after a heart attack, after an angiogram has defined the pattern of disease, or when there is disagreement about whether bypass surgery or stents would offer the safer and more durable result.
Seek urgent medical help for chest pain at rest, worsening chest tightness, sudden breathlessness, collapse, sweating, nausea, or symptoms that suggest a heart attack. These symptoms should not wait for a routine clinic appointment.
A specialist opinion is often most useful before symptoms become severe or the heart muscle has been damaged by poor blood flow. Early referral can help you understand the options clearly while decisions are still planned rather than rushed.
What to expect at your first appointment
Your first consultation is usually about understanding how severe the coronary artery disease is, where the blockages are, and whether bypass surgery is the best way to improve blood flow to your heart.
Your surgeon will review your coronary angiogram, echocardiogram and any CT scans or other heart tests you have had. They will want to know about your symptoms, how active you are, any previous stents or heart attacks, and other conditions such as diabetes, lung disease, kidney disease or previous stroke.
Bring a list of your medicines, details of any allergies, and information about past operations or hospital admissions. If you have copies of scan reports or clinic letters, bring them too.
The discussion will usually cover how many bypass grafts may be needed, which blood vessels are likely to be used, whether the operation is likely to be done on-pump or off-pump, what the main risks are in your case, and what recovery is likely to involve.
Top 5 questions to ask your Coronary Artery Bypass (CABG) Surgeon
How severe are my blockages, and which coronary arteries are affected?
Why you should ask this:
Why are you recommending bypass surgery instead of stents or medication alone?
Why you should ask this:
How many bypass grafts do I need, and which blood vessels are you likely to use?
Why you should ask this:
What are the main risks and likely benefits for someone with my age and health profile?
Why you should ask this:
What should I expect in hospital and how long is recovery likely to take?
Why you should ask this:
Frequently asked questions
What does a CABG surgeon do?
Is bypass surgery the same as open heart surgery?
Does CABG cure coronary artery disease?
What is the difference between a double bypass and a triple bypass?
How long does recovery take after bypass surgery?
Is CABG always better than stents?
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