Responses
Other responses
Jump to comment:
- Published on: 10 February 2021
- Published on: 10 February 2021Modifiable risk factors for residual risk of ischaemic stroke
The residual risk of stroke in subjects with nonvalvular atrial fibrillation(NVAF) is, in part, attributable to coexistence of nonvalvular atrial fibrillation(NVAF) and high-grade(stenosis(50% or more severity) involving the intracranial arterial circulation(1). In the latter study concomitant high-grade cerebrovascular stenosis was identified in 231 of 780 consecutive subjects of mean age 69.5 who had undergone angiographic studies at index stroke(1). Coexistence of extracranial carotid artery stenosis(CAS) and NVAF is also a risk factor for residual stroke(2). In the latter study Chang et al identified high-grade CAS(>50% severity) which was ipsilateral to the index ischemic cerebral infarct in 15 out of 25 patients presenting with stroke(2).
Show More
Secondary prevention of stroke in NVAF patients who have the association of either high-grade stenotic intracranial cerebrovascular disease or high-grade CAS to which the index stroke can be attributed would entail coprescription of low-dose aspirin and an oral anticoagulant drug. Edoxaban would be a suitable candidate, given the fact that the 15 mg/day dose significantly mitigates the risk of stroke ( of presumably cardioembolic origin) in NVAF subjects aged 80 or more(3). That dose is even lower than the 30 mg/day dose which is associated with significantly(p < 0.001) lower risk of gastrointestinal bleeding than warfarin(4).
Primary prevention would require strict abstinence from smoking, str...Conflict of Interest:
None declared.