SAIMSARA Journal

Machine Generated Science • ISSN 3054-3991

Asymptomatic Carotid Stenosis: Scoping Review with ☸️SAIMSARA.

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Cardiac & Vascular Health

Issue 1, Volume 1, 2026

DOI: 10.62487/saimsara427b99fa

Editorial note
• Last update: 2026-04-22 13:47:10
What is this paper about
This paper shows that asymptomatic carotid stenosis is no longer a simple “operate-or-observe” problem: under modern medical therapy stroke risk is often lower than once feared, yet a biologically high-risk subgroup still emerges through plaque vulnerability, hemodynamic failure, microemboli, and covert brain injury. The full review is worth reading because it maps where intervention may still matter, where overtreatment is likely, and how the field is shifting from stenosis percentage alone toward truly individualized risk stratification.


Abstract: The aim of this paper is to synthesize contemporary evidence regarding the natural history, diagnostic innovations, cognitive impacts, and comparative effectiveness of medical and procedural interventions for patients with asymptomatic carotid stenosis. The review utilises 298 references. The mapped evidence suggests that asymptomatic carotid stenosis now carries a lower ipsilateral stroke risk under contemporary medical management than in the historical trial era, with one large modern cohort reporting an annual risk of about 0.9% and a 5-year risk of 4.7% for severe disease managed without surgery. At the same time, risk is not uniform: progression of stenosis, microembolic signals, impaired cerebrovascular reserve, and vulnerable plaque features such as intraplaque hemorrhage, echolucency, ulceration, and neovascularization were repeatedly associated with higher event rates, while moderate stenosis showed very low cumulative ipsilateral stroke risk of 1.2% at 5 years and 2.0% at 10 years in one community cohort. Across treatment topics, carotid endarterectomy and carotid artery stenting appeared to offer broadly similar longer-term protection in selected patients, but perioperative safety often favored endarterectomy, and transcarotid artery revascularization emerged as a promising alternative to transfemoral stenting in contemporary practice. The broader evidence map also indicates that so-called asymptomatic disease is frequently accompanied by covert brain injury, cognitive dysfunction, and systemic vascular risk, supporting a practical shift away from decisions based on stenosis severity alone toward individualized assessment of plaque biology, hemodynamic compromise, life expectancy, frailty, and procedural risk. Future research should prioritize contemporary randomized and prospective studies that integrate standardized imaging, hemodynamic, and cognitive markers to identify the subgroup most likely to benefit from revascularization beyond intensive medical therapy.

Keywords: Asymptomatic carotid stenosis; Carotid endarterectomy; Carotid artery stenting; Stroke risk stratification; Cognitive impairment; Plaque stability; Duplex ultrasound; Medical management; Disease progression; Intraplaque neovascularization

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Reference Index (298)