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"All acute DVT patients should be sent to the interventional radiology department for a consult. We can help their physicians determine the best course of action. If the vein is completely or severely blocked, immediate treatment is needed. Not all partial clots will require treatment, but if the area is still swollen after five to seven days, patients should ask for an appointment with an interventional physician at the hospital," said O'Sullivan. Interventional radiologists are widely available across the United States in most hospital radiology departments.
Abstract 4: "An Endovascular Approach to Deep Venous Thrombosis Utilizing Isolated Thrombolysis and Adjunctive Measures," can be found at http://www.SIRmeeting.org.
About the Study
There were 565 limbs treated in 532 patients. The vein was reopened in all cases, and the treatment worked on acute or chronic clots, which is important because acute, fresh clots are more easily treated. Sixty-eight percent of the patients' thrombi were in the iliac vein (large thigh vein), 19 percent in the smaller femoropoliteal veins (in the leg area), and 13 percent in the subclavian vein (arm and neck area).
Thrombus is generally classified by how long it has been present in the body; SIR's Reporting Standards define acute as 14 days or fewer, subacute as 15 to 28 days and chronic as more than 28 days.
Thrombus was acute in 28 percent, acute on chronic in 44 percent, 11
percent subacute, 12 percent subacute on chronic and chronic in 6 percent,
per the SIR clot-age classification guidelines. Combined Grades II and III
lysis (> 50 to 100 percent thrombus removal) were established in 96.8
percent of acute onset of symptoms, 93.6 percent in acute on chronic, 96.7
percent in subacute, 89.2 percent in subacute on chronic and 90.9 percent
with chronic onset of symptom
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