Efficacy and Safety of Endovascular Recanalization for Acute Basilar Artery Occlusion With Extended Time Window (ANGEL-BAO)

Best medical management included assessment of vital signs and neurological deficits,airway protection respiratory support,circulation;blood pressure monitoring;nutritional support;complication control;symptomatic treatment;laboratory and imaging examinations;etiological analysis and evaluation; anti platelet（e.g. aspirin,adenosine diphosphate (ADP) receptor inhibitors,Adenosine reuptake inhibitors,Glycoprotein platelet inhibitors）；anticoagulation(e.g. warfarin, rivaroxaban,dabigatran,apixaban,edoxaban)；lipid lowering(e.g. Statins,Fibrates）；control of blood pressure(e.g. Thiazide diuretics,Potassium-sparing,Loop diuretic,Beta-blockers,Angiotensin II receptor blockers,Calcium channel blockers,Alpha blockers,Central alpha-2 receptor agonists);control of blood glucose(e.g. SULFONYLUREAS (SFUs),GLINIDES,BIGUANIDES,ALPHA-GLUCOSIDASE INHIBITORS: STARCH BLOCKERS,THIAZOLIDINEDIONES,GLP-1 ANALOGS,DPP-4 INHIBITORS,SGLT2 inhibitors); control of other risk factors

The strategies that were used for endovascular treatment included :stent retrievers (e.g., Solitaire® \[Medtronic, USA\], Trevo® \[Stryker, USA\], EMBOTRAP® \[Johnson \& Johnson, USA\], Captor® \[HeartCare, China\] and other stent-retriever systems) thromboaspiration (e.g., Penumbra® \[Penumbra, USA\], Afentta® \[HeMo, China\] and other aspiration systems)) balloon angioplasty (e.g., Gateway® \[Stryker, USA\], Neuro RX® \[SinoMed, China\], FocuStar® \[HeMo, China\] and other intracranial balloon catheter systems) stent deployment (e.g., Wingspan® \[Stryker, USA\], Apollo® \[MircoPort, China\], Enterprise® \[Johnson \& Johnson, USA\], Neuroform EZ® \[Stryker, USA\] and other Intracranial stent systems)) intraarterial thrombolysis (with alteplase or urokinase) combinations of above approaches that were left to the discretion of the treating team