SAFETY OF ADEQUATE PREDILATATION IN CAROTID ANGIOPLASTY

Abstract

Objective: In carotid angioplasty a lot of interventionists avoid predilatation or perform predilatation using smaller diameter balloons to avoid distal embolization. The objective of our study was to determine the procedural safety and complications of predilatation of carotid artery using adequate diameter balloon in patients undergoing angioplasty.

Methodology: Symptomatic patients with greater than 50% common carotid artery (CCA) or internal carotid artery (ICA) stenosis, asymptomatic patients with 80% or more carotid stenosis, asymptomatic patients planned for Coronary Artery Bypass Graft Surgery (CABG) with bilateral severe carotid stenosis (70-99%) or a unilateral severe carotid stenosis with a contralateral occlusion undergoing CABG, were selected for carotid artery angioplasty. Cerebral angiogram was performed before and after carotid intervention.

Results: A total of 25 patients were included in this study. Adequate diameter balloon used for predilatation before stenting in all cases. Post dilatation was required in 6 (24%) patients. Distal embolic protection device was used in all patients. No complication was seen after predilatation in any case. No mortality or neurological deficit was seen in the study.

Conclusion: This study shows that proper predilatation with adequate diameter balloon, sized according to diameter of internal carotid artery, before carotid stent implantation is an effective and safe procedure. We believe that this leads to good stent expansion and full apposition with better long term outcomes. Moreover it is now important to adequately predilate carotid arteries, for proper sizing of carotid stents with close cell design, to avoid unnecessary longitudinal stent lengthening due to inadequately prepared carotid bed.