Veins carry blood back to the heart. Sometimes a blood clot can form in the arms or legs, causing symptoms such as pain, swelling or redness. If a blood clot breaks off, it can travel to the lungs and cause a serious condition called a pulmonary embolism.
For the venous ultrasound test, some clothing may need to be removed to allow the sonographer to evaluate the entire limb. The bed is tilted, and gel is applied to the area being examined. Pressure is applied as the probe is moved down the limb to compress the veins and determine if a clot is present. This may feel uncomfortable, but it is necessary for a good exam.
During the test, the sonographer may ask you to hold your breath and bear down to evaluate the valves in your veins. If a clot is detected, your primary care physician (or caregiver) will be notified before you leave. You may be admitted to the hospital for treatment.
This test takes approximately 45 minutes to complete. No special preparation is needed.
