Impedance phlebography for the diagnosis of venous thrombosis

We used a noninvasive diagnostic technique, occlusive cuff impedance phlebography (IPG) for the diagnosis of deep venous thrombosis. Eleven patients were examined by IPG with overall diagnostic accuracy of 95% sensitivity, 81% - specificity. Nine patients had symptoms suggestive of deep venous thrombosis but this diagnosis was confirmed in only 25%. The use of impedance phleobography to screen high-risk patients prospectively and evaluate patients with pulmonary emboli is discussed.