Does external ultrasound accelerate thrombolysis? Results from a rabbit model.
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Does external ultrasound accelerate thrombolysis? Results from a rabbit model.
BACKGROUND Prior in vitro and in vivo studies have reported that external ultrasound accelerates thrombolysis at intensities too low to have a direct effect on clot dissolution in the absence of a thrombolytic agent. The present study was undertaken to examine the ultrasound effect on thrombolysis and reocclusion in a rabbit thrombosis model. METHODS AND RESULTS Blood clots were produced in a...
متن کاملCan a commercial diagnostic ultrasound device accelerate thrombolysis? An in vitro skull model.
BACKGROUND AND PURPOSE Recently, 3 clinical trials revealed encouraging results in recanalization and clinical outcome in acute stroke patients when 2-MHz transcranial Doppler monitoring was applied. This study investigated whether a 1.8-MHz commercial diagnostic ultrasound device has the potential to facilitate thrombolysis using an in vitro stroke model. METHODS Duplex-Doppler, continuous w...
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BACKGROUND Catheter-based therapeutic ultrasound thrombolysis was recently shown to be effective and safe. The purpose of this work was to study the safety and efficacy of external high-intensity focused ultrasound thrombolysis guided by ultrasound imaging in experimental settings. METHODS AND RESULTS A therapeutic transducer was constructed from an acoustic lens and integrated with an ultras...
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Introduction: Stroke causes death and disability in patients throughout the world. At present, the only FDA- approved drug for ischemic stroke is recombinant tissue plasminogen activator (rt- PA). Unfortunately, rtPA can cause intracerebral hemorrhage and must use within limited time window (within 3-4.5 hour after onset of stroke). Ultrasound with rtPA loaded liposomes (rtPA_L...
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See related article, pages 1470–1475. Intravenous tissue plasminogen activator (tPA) infusion is the fastest and easiest way to initiate reperfusion therapy in acute stroke. However, poor recovery can still be expected in up to 50% of patients, likely as a result of the initial severity of ischemic insult and slow and incomplete thrombolysis.1,2 Clinical improvement and functional independence ...
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ژورنال
عنوان ژورنال: Circulation
سال: 1994
ISSN: 0009-7322,1524-4539
DOI: 10.1161/01.cir.89.1.339