Ardem Patapoutian

Surgical procedure to replace the aortic valve

Aortic Valve Replacement

Diagram of the human heart showing the location of the aortic valve

Illustration of the heart valves, including the aortic valve

Aortic valve replacement is a surgical procedure in which a patient's aortic valve is replaced with an artificial valve. The aortic valve is one of the four main valves in the heart, and it plays a crucial role in ensuring unidirectional blood flow from the left ventricle to the aorta.

Indications

Aortic valve replacement is typically indicated for patients with severe aortic stenosis or aortic regurgitation. Aortic stenosis is a condition where the valve becomes narrowed, restricting blood flow, while aortic regurgitation occurs when the valve does not close properly, allowing blood to flow backward into the heart.

Types of Replacement Valves

There are two main types of replacement valves used in aortic valve replacement:

• Mechanical valves: These are made from durable materials such as titanium or carbon. They are long-lasting but require patients to take lifelong anticoagulant medication to prevent blood clots.

• Bioprosthetic valves: These are made from animal tissue, such as pig or cow tissue, or from human tissue. They do not require long-term anticoagulation but may need to be replaced after 10-20 years.

Surgical Techniques

Aortic valve replacement can be performed using different surgical techniques:

• Open-heart surgery: The traditional method involves a large incision in the chest and temporarily stopping the heart to replace the valve.

• Minimally invasive surgery: This involves smaller incisions and may use specialized instruments and cameras to perform the surgery with less trauma to the body.

• Transcatheter aortic valve replacement (TAVR): A less invasive procedure where the new valve is inserted via a catheter through the femoral artery or another access point, without the need for open-heart surgery.

Recovery and Prognosis

Recovery from aortic valve replacement varies depending on the type of surgery performed. Patients who undergo open-heart surgery may require several weeks to recover, while those who have minimally invasive procedures may recover more quickly. The prognosis after aortic valve replacement is generally good, with many patients experiencing significant improvement in symptoms and quality of life.

Complications

Potential complications of aortic valve replacement include bleeding, infection, valve dysfunction, and stroke. The risk of complications depends on the patient's overall health, the type of valve used, and the surgical technique.

Related pages

• Heart valve
• Cardiac surgery
• Aortic stenosis
• Aortic regurgitation

Gallery

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  Diagram of the human heart

• Illustration of heart valves

Ardem Patapoutian

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  Ardem Patapoutian

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  Ardem Patapoutian 2022 stamp of Armenia

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  Nobel Prize 2021 TRPV1 Piezo2