Left atrial appendage occlusion

Left atrial appendage occlusion (LAAO) is a medical procedure used to reduce the risk of stroke in patients with atrial fibrillation. The procedure involves the closure or occlusion of the left atrial appendage (LAA), a small, ear-shaped sac in the muscle wall of the top left chamber of the heart that is believed to be the source of a large majority of blood clots in patients with atrial fibrillation.

Procedure

The LAAO procedure is performed by a cardiologist who specializes in the treatment of heart rhythm disorders (electrophysiologist). The procedure is typically performed under general anesthesia. The cardiologist uses imaging techniques such as transesophageal echocardiography (TEE) and fluoroscopy to guide the placement of the occlusion device.

The device is inserted through a small incision in the groin and guided through the vascular system to the heart. Once in place, the device is used to seal off the LAA, preventing blood clots from escaping.

Risks and Complications

Like all medical procedures, LAAO carries some risks. These may include bleeding, infection, damage to the heart or blood vessels, stroke, or death. However, the risk of these complications is generally low.

Effectiveness

Studies have shown that LAAO is an effective treatment for reducing the risk of stroke in patients with atrial fibrillation. It is particularly beneficial for patients who are at high risk for stroke and who are not suitable candidates for long-term anticoagulation therapy.

See Also

• Atrial fibrillation
• Stroke
• Transesophageal echocardiography
• Fluoroscopy

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