Guide To Coronary Artery Bypass Graft Surgery

Coronary Artery Bypass Graft surgery, commonly referred to as CABG, is a major surgical procedure used to treat severe coronary heart disease. This condition occurs when the coronary arteries, which supply oxygen-rich blood to the heart muscle, become narrowed or blocked by a buildup of fatty deposits known as plaque. When lifestyle changes and medications are insufficient, or if the blockages are particularly complex, a surgeon may recommend Coronary Artery Bypass Graft surgery to restore adequate blood flow to the heart.

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Understanding The Coronary Artery Bypass Graft Surgery Procedure

During Coronary Artery Bypass Graft surgery, a healthy blood vessel is taken from another part of the body – typically the leg, arm, or chest. This vessel is then used to create a detour, or “bypass,” around the blocked portion of the coronary artery. By grafting this new vessel onto the heart, surgeons provide a new pathway for blood to reach the heart muscle, effectively bypassing the obstruction.

Surgical Approaches: Traditional, Keyhole, And Robotic

There are several ways to perform Coronary Artery Bypass Graft surgery, depending on the patient’s condition and the number of blockages.

• Traditional Open Surgery: This is the most common method. It involves a “sternotomy,” where the surgeon makes a 20 to 25-centimetre incision down the middle of the chest and divides the breastbone to access the heart. In many cases, a heart-lung bypass machine is used to take over the functions of the heart and lungs so the surgeon can operate on a still heart.
• Keyhole Surgery (Minimally Invasive): Also known as Minimally Invasive Direct Coronary Artery Bypass (MIDCAB), this approach involves smaller incisions (keyholes) made between the ribs. It is often used when only one or two arteries need bypassing and typically does not require a heart-lung machine.
• Robotic-Assisted Surgery: This is a highly advanced form of minimally invasive surgery. The surgeon uses a computer console to control robotic arms that hold precision instruments. This method allows for high-definition 3D visualization and greater dexterity through very small incisions, leading to less trauma and smaller scars.

When Is Coronary Artery Bypass Graft Surgery Needed?

Coronary Artery Bypass Graft surgery is generally considered necessary when diagnostic tests, such as a coronary angiogram, reveal significant blockages. Common indications include:

• Left Main Disease: A blockage of more than 50% in the left main coronary artery, which supplies a large portion of the heart.
• Multivessel Disease: Severe narrowing (greater than 70%) in three or more major coronary arteries.
• Complex Anatomy: When the location or nature of the blockages makes them unsuitable for treatment with stents (angioplasty).
• Persistent Symptoms: Severe chest pain (angina) that does not improve with medications or other non-surgical treatments.

Risks And Potential Complications

As with any major surgery, Coronary Artery Bypass Graft surgery carries certain risks. These may vary based on the age and overall health of the patient. Potential complications include:

• Bleeding and Infection: Common risks associated with any surgical incision.
• Arrhythmias: Irregular heart rhythms, such as atrial fibrillation, which are common after heart surgery but usually temporary.
• Kidney Issues: Temporary decline in kidney function due to changes in blood flow during surgery.
• Stroke or Heart Attack: While rare, these are serious risks that surgeons work to minimize through careful monitoring.
• Memory Changes: Some patients experience temporary “brain fog” or difficulty thinking clearly, which typically improves within six to twelve months.

Suitable Candidates And Success Factors

Ideal candidates for Coronary Artery Bypass Graft surgery are individuals with significant heart disease who otherwise have a reasonable level of physical health to undergo major surgery. Factors that contribute to a successful outcome include:

• Being under the age of 60 (though older patients frequently undergo the procedure with high success rates).
• Well-controlled blood pressure and cholesterol levels.
• A commitment to post-operative lifestyle changes, such as smoking cessation and a healthy diet.

When The Procedure May Not Be Suitable

Coronary Artery Bypass Graft surgery may not be recommended for every patient. Situations where it might be considered unsuitable include:

• Terminal Illness: If a patient has a limited life expectancy due to another incurable disease, the risks of major surgery may outweigh the benefits.
• Severe Organ Failure: Advanced liver or kidney disease can significantly increase the danger of the procedure.
• Extreme Frailty: Patients who are very weak or have multiple severe comorbidities may not have the physiological reserve to recover from such a major operation.
• Absence of Viable Heart Muscle: If the heart tissue is already too damaged from previous heart attacks, grafting new vessels may not provide a benefit.

Singapore Fee Benchmarks For CABG

In Singapore, the Ministry of Health provides fee benchmarks to ensure transparency and serve as a reference for reasonable charges in the private sector. These benchmarks are categorized by the Surgeon Fee and the Anaesthetist Fee based on the Table of Surgical Procedures (TOSP).

For a routine Coronary Artery Bypass Graft surgery, the fee benchmarks (effective from 1 January 2025) are as follows:

• Surgeon Fee Benchmark: The recommended range is between $10,500 and $15,800.
• Anaesthetist Fee Benchmark: The recommended range is between $3,200 and $4,800.

It is important to note that these figures are benchmarks and not a strict fee cap. Doctors may charge outside of these ranges with valid justification, such as in cases involving unusual complexity or patients who are very ill. Patients should be informed of the estimated costs before the procedure is carried out.

Hospital Fee Considerations

The total cost of Coronary Artery Bypass Graft surgery also includes hospital fees, which cover room charges, surgical facilities, equipment, consumables, and medications.

• Ward Type: Hospital fee benchmarks for inpatient settings are typically relevant for 1-bedded ward types, which are common in the private sector.
• Exclusions: These hospital benchmarks exclude the professional fees of the surgeon, anaesthetist, and any inpatient attendance fees charged by doctors.
• Routine Cases: The benchmarks are intended to cover routine and typical cases and exclude patients with exceptional complexity.

Our Preferred Doctors For CABG

If you are looking for a surgeon for CABG or other heart surgeries, you can consider our Preferred Doctors:

• Dr John Chan Kok Meng is a highly distinguished cardiothoracic surgeon in Kuala Lumpur, Malaysia, with extensive clinical experience in complex heart procedures including Coronary Artery Bypass Grafting and heart valve repair. Dr Chan is also a dedicated researcher and academic who has published numerous papers on adult heart, aorta, and thoracic diseases.

Dr John Chan Kok Meng 陈国明医生

Kuala Lumpur, Malaysia

Cardiac Vascular Sentral (Kuala Lumpur)

Cardiothoracic Surgery

[SG] Featured Doctor- Dr Kevin Koo

Orthopaedic Surgeon In Singapore

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Coronary Artery Bypass Graft surgery remains a critical intervention for individuals with advanced heart disease. Understanding the procedure and the associated financial benchmarks in Singapore can help patients make informed decisions about their healthcare. Always consult with a qualified medical professional to determine the most appropriate treatment plan for your specific condition.

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