Open heart surgery is a major procedure often performed to repair blocked arteries, replace heart valves, or treat other serious heart conditions. Many older adults and their families want to know how long the operation will last and what to expect before and after surgery. At St George Hospital, our specialists in aged care and cardiac services help patients understand every stage of treatment, from a Calcium Heart Scan to recovery after surgery.
In most cases, open heart surgery takes between three and six hours. However, the exact length depends on the type of operation, the patient’s age, overall health, and whether there are additional heart problems that need to be corrected during the same procedure. Some complex surgeries may take longer than six hours, especially if several arteries or valves require repair.
Why Surgery Time Varies
The length of open heart surgery can differ because not all procedures are the same. Coronary artery bypass surgery, one of the most common operations in older adults, often takes about four to six hours. Valve replacement surgery may last three to five hours, while more complex procedures involving multiple repairs can continue for six hours or more.
Patients who have already undergone heart surgery in the past may also require more time in the operating room because scar tissue makes the procedure more challenging. Older adults with diabetes, kidney disease, or lung disease may need additional monitoring, which can extend the operation. At St George Hospital, our surgical team carefully reviews every patient’s history through a Heart Scan and other evaluations before scheduling surgery.
What Happens Before Open Heart Surgery
Before the operation begins, patients usually spend several hours in preparation. Nurses and doctors review medications, place intravenous lines, and complete final blood tests and imaging. A heart specialist may also recommend a Calcium Heart Scan to measure plaque buildup in the coronary arteries. This scan helps determine whether open heart surgery is necessary or if another treatment may be more suitable.
A routine Heart Scan may also include an echocardiogram, CT scan, or MRI. These tests allow the surgeon to see the heart clearly and plan the safest approach. At the Heart Health Clinic, older adults receive a complete assessment so the care team can estimate how long surgery is likely to take.
The Main Stages of Surgery
Open heart surgery usually begins after the patient receives general anesthesia. Once asleep, the surgeon makes an incision through the chest and opens the breastbone to reach the heart. In many procedures, the heart is connected to a heart-lung machine that keeps blood and oxygen moving through the body while the surgeon operates.
The surgeon then performs the planned repair. This may include bypassing blocked arteries, replacing a damaged valve, or repairing another part of the heart. After the repair is complete, the heart is restarted, the heart-lung machine is removed, and the chest is carefully closed.
Although the repair itself may only take a few hours, the entire time in the operating room is often longer because anesthesia, preparation, and recovery from anesthesia are also included. Most patients remain in the operating room and immediate recovery area for five to eight hours total.
How a Calcium Heart Scan Helps Before Surgery
A Calcium Heart Scan is an important test that can help determine whether surgery is needed. The scan measures calcium deposits in the coronary arteries. High calcium levels suggest a greater amount of plaque, which may increase the risk of blocked arteries and heart disease.
For older adults, this test is especially useful because it can detect heart problems before severe symptoms appear. When combined with a Heart Scan, doctors can decide whether medication, lifestyle changes, or surgery is the best option. At St George Hospital, many patients are first referred to the Heart Health Clinic for these assessments before surgery is planned.
Recovery Immediately After Surgery
After open heart surgery is complete, patients are moved to the intensive care unit. Most people stay in intensive care for one or two days. During this time, doctors monitor heart rhythm, breathing, and blood pressure. Older adults often need extra observation because recovery can be slower with age.
Most patients remain in the hospital for five to seven days before going home. Recovery does not end after discharge. Full healing from open heart surgery usually takes six to twelve weeks, depending on the individual’s health and the complexity of the operation.
The Role of a Heart Health Clinic in Recovery
The Heart Health Clinic plays a major role in helping patients recover safely after surgery. Follow-up visits may include another Heart Scan to check healing and confirm that the heart is functioning correctly.
Cardiac rehabilitation is often recommended for older adults. This program includes supervised exercise, nutrition counseling, and education about heart disease. Patients also learn how to lower future risk by controlling blood pressure, cholesterol, and diabetes. In some cases, a repeat Calcium Heart Scan may be performed months or years later to monitor ongoing heart health.
When to Seek Medical Attention After Surgery
Most people recover without major problems, but there are situations when immediate medical attention is necessary. Patients should contact their doctor if they experience severe chest pain, difficulty breathing, high fever, heavy bleeding, or swelling around the surgical incision.
Older adults should also watch for confusion, weakness, or irregular heartbeat after returning home. These symptoms can indicate complications that require prompt treatment. At St George Hospital, patients can contact the Heart Health Clinic for guidance if they have concerns during recovery.
Frequently Asked Questions About Heart Surgery
How long does bypass surgery usually take?
Bypass surgery is the most common type of open heart surgery and generally takes four to six hours. More complicated cases may take longer.
Does a Heart Scan show if I need surgery?
A Heart Scan can reveal blocked arteries, damaged valves, or other heart problems. Doctors use the results to decide if surgery is necessary.
What is a Calcium Heart Scan?
A Calcium Heart Scan is a CT-based test that measures calcium buildup in the coronary arteries. High calcium levels can increase the risk of heart disease and may help doctors decide if more testing or treatment is needed.
How long will I stay in the hospital after open heart surgery?
Most patients stay in the hospital for five to seven days, although some older adults may need a longer stay depending on their health and recovery.
Can older adults recover fully after open heart surgery?
Yes. Many older adults recover well and return to their normal activities within two to three months. Recovery is often easier when patients follow advice from the Heart Health Clinic and attend cardiac rehabilitation sessions.
Conclusion
Open heart surgery usually takes between three and six hours, but more complex procedures may last longer. The exact timing depends on the patient’s health, the type of surgery, and the number of repairs needed. Tests such as a Calcium Heart Scan and a Heart Scan help doctors understand the severity of heart disease and plan the safest treatment.
