Although this test is extremely accurate it has largely been replaced by ultrasound because a venogram is more difficult to perform, more expensive, and is somewhat invasive. IPG is much less accurate in detecting clots below the knee. This limitation is not as important because DVTs below the knee almost never embolize. This test, although inexpensive and accurate, has largely been replaced by ultrasound in most hospitals. Treatment of a DVT may depend on both its location and underlying cause.
Treatment consists of bedrest at home and anti-inflammatory medications.
Clot propagation occurs in 10 percent to 30 percent of DVTs below the calf. For this reason your doctor will follow you closely and want to know if pain or swelling occur at or above the knee. Your doctor may hospitalize you if there are risk factors for propagation such as previous DVTs, being bedridden, or having a hypercoagulable disorder. DVT occurring in deep knee or thigh veins, known as proximal DVT, require hospitalization and anticoagulation because of increased risk of pulmonary embolus. Anticoagulants stop the formation of new clots but do not dissolve already formed clots.