Carotid hemodynamics normalized immediately after both patching and stenting and remained relatively stable thereafter up to 12 months.
In stented patients, the luminal diameter of the proximal internal carotid artery increased in the interval between the 24-hour and 12-month post-procedure studies, while in the patch closure patients, the diameter decreased. Residual stenoses (immediately post-procedure) and restenoses (within 12 months of procedure) were defined as narrowings of ≥50% on duplex ultrasound examination.
Duplex ultrasound parameters (luminal diameter, mm peak systolic velocity and end-diastolic velocity, cm/s) were measured 24 hours after the procedures and also at 12 months post-procedure. Twenty-nine carotid stenoses were treated with stenting and 65 with patch closure. A duplex ultrasound study was performed to investigate morphological and hemodynamic patterns of carotid stenoses treated by endarterectomy with patch closure versus stenting.
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