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Ultrasound guided percutaneous thrombin injection has recently been described for the treatment of iatrogenic femoral pseudoaneurysms. Patient selection and technical aspects of this technique are still evolving and safety data, particularly after coronary intervention, remains limited. The percutaneous thrombin injection of femoral artery pseudoaneurysms in 13 consecutive patients, most of whom were receiving antiplatelet/anticoagulant treatment (aspirin 11, heparin 4, clopidogrel 6), is reported. Thrombin (1000 U/ml) was injected over several seconds until Doppler colour flow within the cavity ceased. The median dose of thrombin injected was 800 U (range 200-1000 U) and the treatment was successful in all cases without complication. In one case, thrombus was visualised within the arterial lumen immediately after thrombin injection, but this dissolved spontaneously within five minutes without evidence of embolisation. In contrast to ultrasound guided compression, percutaneous thrombin injection of femoral pseudoaneurysms is a rapid, well tolerated, and successful technique even in patients receiving antiplatelet/anticoagulant treatment.

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Adult, Aged, Aneurysm, False, Angioplasty, Balloon, Coronary, Anticoagulants, Catheterization, Peripheral, Coronary Angiography, Female, Femoral Artery, Hemostatics, Humans, Iatrogenic Disease, Injections, Intra-Arterial, Male, Middle Aged, Patient Selection, Platelet Aggregation Inhibitors, Risk, Thrombin, Ultrasonography, Doppler, Color