Ultrasound-accelerated thrombolysis in arterial and venous peripheral occlusions: fibrinogen level effects

Journal of Vascular and Interventional Radiology : JVIR
Rodney Raabe

Abstract

This study retrospectively assesses whether significantly accelerating thrombolysis with ultrasound affects fibrinogen levels in the treatment of peripheral arterial occlusions. Between December 2005 and August 2007, 38 limbs in 38 patients (17 women; mean age, 60.5 +/- 19.7 years; age range, 17-94 years) were treated with ultrasound-accelerated thrombolysis for peripheral arterial occlusion (PAO) and deep vein thrombosis (DVT), with serum fibrinogen levels measured at baseline and every 24 hours. All occlusions were treated with alteplase (0.5-1.0 mg/h). Complete or partial lysis was achieved in 92.1% of patients. All patients received thrombolytic therapy with mean infusion time of 42.3 hours (range, 20-96 hours). As part of standard clinical practice, patients were not assessed angiographically overnight. Mean total alteplase dose was 40.6 mg (range, 18-96 mg). Across all patients, the fibrinogen level at the end of infusion decreased by an average of 18.5% from baseline, and no patient exhibited a fibrinogen level < 100 mg/dL during treatment. Fibrinogen depletion was more pronounced among patients with venous occlusions (26.4% from baseline) than those with arterial occlusions (15.8% from baseline). No major hemorrhagic co...Continue Reading

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