To compare the incidence of the composite endpoints of non-fatal ischaemic stroke, transient ischaemia (TIA) and all-cause mortality at 12-month follow-up after implantation of Bridge for the treatment of symptomatic vertebral artery stenosis in subjects who had been taking different durations of dual-antiplatelet therapy (3 vs 6 months) and ticagrelor monotherapy.
Patients who are suitable for Bridge implantation
Symptomatic vertebral artery stenosis with a history of posterior circulation-related ischaemic stroke or TIA despite the use of at least one antithrombotic medications and intervention for risk factors
Responsible vertebral artery stenosis (≥70% stenosis, measured by the NASCET method ) confirmed by DSA imaging
The patient and/or his/her authorised person understands the purpose of the study, agrees to participate in the study and signs the informed consent form
mRS≥3
Presence of tandem stenotic lesions in the target lesion areaor combined basilar artery stenosis Presence of ≥2 stenotic cerebrovascular lesions requiring concurrent intervention The presence of severe tortuosity or calcification of the target vessel, or the presence of extensive abnormal vascular structural variants that are difficult for catheters or stents to pass or cannot be implanted
Lesions or stenosis that is too large and beyond the specification of the stent
Non-atherosclerotic stenosis such as atrial fibrillation, vasculitis stenosis, arterial entrapment, smoky disease, active phase of arteritis, or unknown cause
Parallel
Ticagrelor
DrugTo compare the safety and efficacy of different DAPT duration combined with ticagrelor monotherapy.
Incidence of the composite endpoint of non-fatal ischaemic Stroke, TIA, and all-cause mortality at 12-months.
Incidence of the composite endpoint of major bleeding and hemorrhagic stroke at 12-months.
Incidence of target vessel-related stroke and neurological death at 1month
Incidence of stroke and neurological death at 12 month.
Incidence of all-cause mortality at 12 month.
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