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Table 1: Endovascular procedures according to type of anesthesia used
Variables Procedures Started under General Anesthesia Procedures Started under Conscious Sedation Failure of Conscious Sedation Conversion Rate
Total procedures 387 526 9/526 (1.7%)
Type of procedure 
    Endovascular treatment of cerebral vasospasm 88 (23%) 81 (15.4%) 2 (2.5%)
    Extracranial carotid artery stent placement 11 (3%) 172 (32.7%) 1 (0.6%)
    Intracranial angioplasty and/or stent placement 30 (8%) 51 (9.7%) 1 (2.0%)
    Embolization of ruptured aneurysm 86 (22%) 21 (3.9%) 1 (4.8%)
    Embolization of unruptured aneurysm 53 (14%) 28 (5.3%) 1 (3.6%)
    Endovascular treatment of acute ischemic stroke 50 (13%) 86 (16.3%) 3 (3.5%)
    Embolization of AVM/epistaxis 69 (18%) 87 (16.5%) 0 (0%)
No. of procedures per patient 
    1 199 (75%) 
    2 38 (14%) 
    ≥3 28 (11%)

Variables	Procedures Started under General Anesthesia	Procedures Started under Conscious Sedation	Failure of Conscious Sedation Conversion Rate
Total procedures	387	526	9/526 (1.7%)
Type of procedure
Endovascular treatment of cerebral vasospasm	88 (23%)	81 (15.4%)	2 (2.5%)
Extracranial carotid artery stent placement	11 (3%)	172 (32.7%)	1 (0.6%)
Intracranial angioplasty and/or stent placement	30 (8%)	51 (9.7%)	1 (2.0%)
Embolization of ruptured aneurysm	86 (22%)	21 (3.9%)	1 (4.8%)
Embolization of unruptured aneurysm	53 (14%)	28 (5.3%)	1 (3.6%)
Endovascular treatment of acute ischemic stroke	50 (13%)	86 (16.3%)	3 (3.5%)
Embolization of AVM/epistaxis	69 (18%)	87 (16.5%)	0 (0%)
No. of procedures per patient
1	199 (75%)
2	38 (14%)
≥3	28 (11%)