Characteristic sonographic findings of early restenosis after carotid endarterectomy

Journal of Ultrasound in Medicine : Official Journal of the American Institute of Ultrasound in Medicine
Noriko MakiharaYasushi Okada

Abstract

Restenosis of the carotid artery after carotid endarterectomy (CEA) is a major complication. The frequency, time of occurrence, and tissue characteristics of carotid restenosis were assessed with sonography. Two hundred sixteen patients who had CEA for carotid stenosis were studied; follow-up sonography and magnetic resonance angiography were done 2 weeks, 3 months, and then every year after CEA. On sonography, restenosis was defined as an internal carotid artery (ICA) with a peak systolic velocity of 170 cm/s or greater or a maximum area of stenosis of 90% or greater. During 605 artery-years of follow-up, 18 patients (7.5%) were found to have restenosis on sonography: 4 at 3 months, 11 at 1 year, and 3 at 2 years after CEA. At the time that restenosis was detected, in all 18 ICAs the peak systolic velocity exceeded 200 cm/s and had more than doubled since the last measurement (mean +/- SD, 103 +/- 27 to 321 +/-107 cm/s), whereas the area of stenosis exceeded 90% in 6 patients, and magnetic resonance angiography revealed stenosis of 60% or greater in 8 patients. On sonography, all of the restenotic plaques were isoechoic and concentric. The restenosis was asymptomatic in 17 patients. Vascular risk factors or the severity of ini...Continue Reading

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Citations

Jul 31, 2010·Neurologia Medico-chirurgica·Tetsuyuki YoshimotoSadao Kaneko
Nov 30, 2011·Journal of Ultrasound in Medicine : Official Journal of the American Institute of Ultrasound in Medicine·Nikola AleksicDjordje Radak
Dec 28, 2012·Neurologia Medico-chirurgica·Masahito KawaboriKiyohiro Houkin

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