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Guidelines for Anticoagulation Therapy for Secondary Prevention After Deep Vein Thrombosis

Residual Vein Thrombosis (RVT) to Determine Duration of Anticoagulation6

Slide 15

June 2011

The way they defined residual thrombus was by compression ultrasonography. When they compressed the involved venous segment, if the diameter of the vein was more than 40 percent of the uncompressed venous diameter, this met criteria for residual venous thrombosis. On the other hand, if the thrombus by compression was less than 40 percent of the original vein diameter, then this was consistent with the definition of thrombus resolution.

RVT to Determine Anticoagulation6


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