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Carotid Duplex


Carotid Duplex is a test that shows how well blood is flowing through the carotid arteries. The carotid arteries are located in the neck and supply blood to the brain.


How the Test is Performed

The test is done in a vascular lab or radiology department. You will be asked to lie on your back. Your head will be supported to prevent it from moving.


The health care provider applies a water-soluble gel on your skin and gently runs a handheld device called a transducer over the area of the carotid arteries in your neck.


The device sends high-frequency sound waves to the arteries in your neck. The sound waves bounce off the blood vessels and form images or pictures of the insides of the arteries.


Why the Test is Performed

The carotid duplex test checks blood flow in the carotid arteries. It can detect:

Your doctor may order this test if:

The health care team will check your pulse (heart rate), blood pressure, and breathing during the procedure.


After the x-rays are taken, the catheter is removed. Pressure is immediately applied at the site of insertion for a few minutes to stop the bleeding. Additionally, a special closure device may be used to facilitate faster recovery and mobility. After that time, the area is checked and a bandage is applied.


The arm or leg where the needle was placed should be kept straight for 2 to 6 hours after the procedure. You should avoid strenuous activity, such as heavy lifting, for 24 - 48 hours.


Why the test is performed

The test is done when someone has symptoms of a narrowed or blocked blood vessel in the arms, hands, legs, or feet.

The test may also be done to diagnose:

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Tests/Treatments

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A Northside Hospital Physician Practice.
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