Abstract
Abstract Background Carotid artery stenosis (CAS) is estimated to cause 11-28% of ischaemic strokes annually. The primary objective of this audit was to assess current adherence to best medical therapy (BMT) to patients with CAS in a tertiary stroke centre. Our secondary aim was to assess stability, regression or progression of CAS whilst on BMT. Methods A retrospective chart review was conducted in a tertiary stroke centre over a six-week period. Patients were included if they were aged over 18 years, presenting to an outpatient stroke clinic, and had a known diagnosis of either symptomatic or asymptomatic CAS. The European Stroke Organisation Guidelines were used to define BMT. Results A total of 56 charts were reviewed at three weekly outpatient clinics. Of the 27 patients meeting our inclusion criteria 66% (n=18) were male, median degree of CAS was 50-70% and 78% (n=20) had symptomatic CAS. 89% were on BMT but only 56% achieved a low-density lipoprotein cholesterol (LDL-C) target of <1.8 (median 1.6 (range: 0.7-4.2) and only 66% (n=18) had a documented smoking status. 81% of patients with symptomatic CAS on BMT had stable stenosis, 5% had regression and 14% had progression of stenosis. 50% of asymptomatic patients had progression of the degree of their stenosis. Conclusion Overall adherence to BMT was good at 89% but there is room for improvement particularly in terms of lipid target level and documentation of risk factor status. BMT resulted in stable stenosis and low progression rates particularly in patients with symptomatic CAS. BMT and early detection are essential for management to control progression of CAS, but we have highlighted the opportunity to improve LDL-C targets. Further research is needed to evaluate if the results of this study are translatable to the stroke population in general.
Published Version
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