Doppler ultrasound exam of an arm or leg

The test is done in the ultrasound or radiology department, a hospital room, or in a peripheral vascular lab. During the exam: A water-soluble gel is placed on a handheld device called a transducer. This device directs high-frequency sound waves to the artery or veins being tested. Blood pressure cuffs may be put…

You will need to remove clothes from the arm or leg being examined.

Sometimes, the person performing the test will need to press on the vein to make sure it does not have a clot. Some people may feel slight pain from the pressure.

This test is done as the first step to look at arteries and veins. Sometimes, arteriography and venography may be needed later. The test is done to help diagnose: Arteriosclerosis of the arms or legs Blood clot (deep vein thrombosis) Venous insufficiency The test may also be used to: Look at injury to the arteries…

A normal result means the blood vessels show no signs of narrowing, clots, or closure, and the arteries have normal blood flow.

Abnormal results may be due to: Blockage in an artery by a blood clot Blood clot in a vein (DVT) Narrowing or widening of an artery Spastic arterial disease (arterial contractions brought on by cold or emotion) Venous occlusion (closing of a vein) Venous reflux (blood flow going the wrong direction in veins) Arterial…

There are no risks from this procedure.

Cigarette smoking may alter the results of this test. Nicotine can cause the arteries in the extremities to constrict. Quitting smoking lowers the risk for problems with the heart and circulatory system. Most smoking-related deaths are caused by cardiovascular problems, not lung cancer.

Aziz MU, Zahid M, Weber TM, Robbin ML. Peripheral veins. In: Rumack CM, Levine D, eds. Diagnostic Ultrasound . 6th ed. Philadelphia, PA: Elsevier; 2024:chap 26. Bonaca MP, Creager MA. Peripheral artery diseases. In: Libby P, Bonow RO, Mann DL, Tomaselli GF, Bhatt DL, Solomon SD, eds. Braunwald's Heart Disease: A…