Heart Surgery Types, Procedures, and Risks

Heart surgery is often considered when medication or less invasive procedures are no longer enough to manage a heart condition. Advances in cardiac care have made many heart surgeries safer and more effective, helping patients improve their quality of life and long-term heart function.

If you are concerned about your heart health, we encourage you to schedule a consultation with our cardiology services team for a comprehensive evaluation and personalized treatment recommendations.

What Is Heart Surgery?

Heart, or cardiac, surgery refers to procedures that repair or replace damaged structures in the heart. Open-heart surgery accesses the heart through the chest, while minimally invasive heart surgery uses smaller incisions and specialized instruments.

Surgery commonly treats blocked arteries, damaged valves, and structural heart problems, and every treatment plan depends on your diagnosis and overall health.

When Is Heart Surgery Needed?

Doctors typically recommend surgery for:

• Blocked coronary arteries
• Damaged heart valves
• Congenital heart defects
• Aortic aneurysm
• Serious heart rhythm disorders
• Advanced heart failure requiring transplantation

Surgery is usually considered after evaluation by a multidisciplinary heart team.

Types of Heart Surgery

Coronary Artery Bypass Grafting (CABG)

Coronary artery bypass grafting, commonly called CABG, creates a new path around a blocked coronary artery using a healthy blood vessel from elsewhere in the body. It can relieve chest pain and improve blood flow to the heart muscle, and typically takes three to six hours, depending on complexity.

Heart Valve Repair or Replacement

Heart valves can fail due to stenosis, a narrowing that restricts blood flow, or regurgitation, a leak. Repair is generally preferred when possible.

Replacement uses a mechanical valve, which is durable but requires lifelong blood thinners, or a biological valve made from tissue, which typically does not.

Aortic Aneurysm Repair

An aneurysm is a bulge in the aorta caused by a weakened artery wall. Surgery may prevent rupture and can be planned or, in urgent cases, an emergency procedure supported by our emergency care team.

Congenital Heart Surgery

Congenital heart surgery treats structural problems present from birth, such as atrial septal defect (ASD) and ventricular septal defect (VSD). Some conditions are treated in childhood, while others are not diagnosed until adulthood.

Maze Procedure and Cardiac Device Implantation

The Maze procedure treats atrial fibrillation, an irregular heart rhythm, by creating scar tissue patterns that help restore a normal rhythm. Devices such as pacemakers and defibrillators (ICDs) can also help regulate heart rhythm.

Heart Transplant

A heart transplant may be considered for advanced heart failure that has not responded to other treatments. Recipients need long-term follow-up and lifelong medication to prevent organ rejection.

Minimally Invasive Heart Surgery

Minimally invasive heart surgery uses smaller incisions, which can mean less pain and shorter recovery for selected patients, though it is not suitable for everyone. Not sure which treatment is right for you?

Our multidisciplinary cardiothoracic surgery team can help determine the most appropriate surgical or non-surgical approach for your condition.

How Is Heart Surgery Performed?

Before Surgery

Your care team typically reviews your medical history and completes blood tests, an ECG (a test of your heart's electrical activity), an echocardiogram (a heart ultrasound), imaging, a medication review, and fasting instructions.

During Surgery

You receive general anesthesia, and a heart-lung machine may support circulation while the surgeon operates.

After Surgery

Most patients are monitored in the ICU, followed by a hospital stay, pain management, early mobilization, and follow-up appointments.

Risks of Heart Surgery

As with any major operation, heart surgery carries some risks, including:

• Bleeding
• Infection
• Blood clots
• Stroke
• Irregular heartbeat (arrhythmia)
• Reaction to anesthesia
• Damage to nearby blood vessels or organs
• Temporary confusion after surgery

Our medical teams carefully assess each patient's risks before surgery and provide close monitoring throughout recovery.

Recovery After Heart Surgery

Recovery typically takes six to twelve weeks for many open-heart procedures, depending on the surgery and your overall health. Recovery generally involves:

• Gradually increasing physical activity
• Proper wound care
• Cardiac Rehabilitation, a supervised program of exercise and education
• Smoking cessation and weight management
• Medication adherence and follow-up visits

Planning for heart surgery? Our specialists provide pre-operative assessments, advanced surgical care, and post-operative rehabilitation to support your recovery.

How to Prepare for Heart Surgery

If surgery has been recommended, it helps to:

• Stop smoking if advised.
• Keep blood pressure and diabetes well controlled.
• Discuss all medications with your care team.
• Arrange transportation and home support in advance.
• Prepare your home for the recovery period.

A routine heart screening or medical check-up can also be a helpful starting point if you have not yet been formally evaluated.

Taking the Next Step Toward Lasting Heart Health

Heart surgery can effectively treat many serious heart conditions, but the best approach depends on your diagnosis, overall health, and treatment goals. If you have been diagnosed with heart disease or advised to consider cardiac surgery, contact us or book an appointment with Bali International Hospital to consult with our experienced heart specialists.

Early evaluation and personalized treatment can help improve outcomes and support long-term heart health.

Frequently Asked Questions

What Are the Most Common Types of Cardiac Surgery, and What Health Problem Does Each One Fix?

The most common types include CABG for blocked arteries, valve repair or replacement for damaged valves, and less commonly, congenital heart surgery or heart transplant for complex conditions. Each addresses a different problem, so your cardiac surgeon recommends the option suited to your diagnosis.

What Actually Happens During a Heart Bypass or Valve Surgery?

During bypass or valve surgery, you receive general anesthesia, and a heart-lung machine may support circulation while the surgeon repairs or replaces the affected area. Most patients then recover in the ICU before moving to a regular room.

What Are the Real Risks of Heart Surgery, and How Common Are Serious Complications?

Heart surgery carries real risks, including bleeding, infection, and irregular heart rhythm, though serious complications are relatively uncommon and are closely monitored throughout your care.

Is Open-Heart Surgery Always Necessary, or Are There Less Invasive Options Available?

Open-heart surgery is not always necessary. Many conditions can be treated with minimally invasive techniques or non-surgical options, depending on your diagnosis and your cardiac specialist's recommendation.