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  • Title: The value of combined strain gauge plethysmography and radioactive iodine fibrinogen scan of the leg in the diagnosis of deep vein thrombosis.
    Author: AbuRahma AF, Lawton WE, Osborne L.
    Journal: Surg Gynecol Obstet; 1983 May; 156(5):633-5. PubMed ID: 6845127.
    Abstract:
    The fallibility of the clinical diagnosis of deep venous thrombosis has led to a variety of noninvasive diagnostic methods, for example, Doppler ultrasound, plethysmography, 125I fibrinogen and radionuclide phlebography. This study was undertaken to analyze the value of combined strain gauge plethysmography and 125I fibrinogen scan of the leg in the diagnosis of deep venous thrombosis. The study was carried out upon 368 patients with suggestive findings of venous thrombosis. Four hundred and fifty strain gauge plethysmograms were reviewed. Venograms were done upon 106 limbs and 125I fibrinogen leg scans, on 136 limbs. Of the 64 limbs with normal strain gauge plethysmograms which had venograms, 58 were normal, five had incompetent perforators and one limb had deep venous thrombosis. Of the 42 legs with abnormal strain gauge plethysmograms which had venograms, 25 had deep venous thrombosis, 15 had incompetent perforators and two were normal. Twenty-three of 24 legs having both abnormal strain gauge plethysmograms and leg scans were confirmed to have deep venous thrombosis at venography. Fourteen of 18 legs with abnormal strain gauge plethysmograms but normal scans were found to have incompetent perforators. We conclude, that the strain gauge plethysmogram is a reliable test in excluding deep venous thrombosis and, when combined with the fibrinogen leg scan, is reliable in its diagnosis.
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