Lower extremity venography
Alternative names:
phlebography; venogram
How the test is performed:
This test is done in the hospital. You will be asked to lie on the X-ray table. The area over the vein to be used is cleansed, and a local anesthetic is given. The vein is punctured and a needle is inserted into the vein. A catheter (a long, narrow, flexible tube) is inserted through the needle and into the vein. The contrast material is injected into the vein, and X-rays are taken following the contrast material through the extremity. A tourniquet may be placed on your leg so that the contrast medium will flow up the deeper veins. The catheter is then withdrawn, and the puncture site is bandaged.
How to prepare for the test:
Advise the health care provider if you are pregnant and if you have ever had any bleeding problems. Mention any allergic reactions to X-ray contrast material, iodine substance, and any thing else. You must sign a consent form. You will be given a gown to put on. Remove all jewelry. You may be given a sedative or pain pill before the procedure.
Infants and children:
The physical and psychological preparation you can provide for this or any test or procedure depends on your child's age, interests, previous experience, and level of trust. For specific information regarding how you can prepare your child, see the following topics as they correspond to your child's age:
How the test will feel:
The X-ray table is hard and cold; you may ask for a blanket or pillow. There is a sting when the anesthetic is given. You may feel some pressure and discomfort as the catheter is gently positioned. As the dye is injected, there is a burning sensation. There is a tenderness and bruising at the site of the injection after the test.
Why the test is performed:
The test is used to identify and locate thrombi (blood clots) in the veins of the extremity that is affected.
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