Table 3 Comparison of characteristics of patients that achieved good outcomes in patients which DWF occurred during procedure.

	Good outcome (N = 12)	Poor outcome (N = 26)	p value
Sex, male	5 (41.7%)	16 (61.5%)	0.252
Age, years	66 ± 9	69 ± 13	0.448
Diabetes mellitus	1 (8.3%)	12 (46.2%)	0.022
Hypertension	7 (58.3%)	14 (53.8%)	0.796
Atrial fibrillation	3 (25.0%)	17 (65.4%)	0.020
Initial NIHSS	16.5 [14.25–21.75]	19.0 [14.0–22.25]	0.839
ASPECTS	6.0 [4.5–7.5]	7.0 [3.0–8.0]	0.793
Primary occlusion ___location			0.722
Simple ICA T	7 (58.3%)	16 (61.5%)
IIO	1 (8.3%)	4 (15.4%)
M1O	4 (33.3%)	6 (23.1%)
Tandem occlusion	3 (25.0%)	1 (3.8%)	0.048
Intravenous tPA	7 (58.3%)	12 (46.2%)	0.485
Onset-to-puncture, min	291 ± 121	373 ± 254	0.188
Procedure time, min	53 ± 27	113 ± 55	< 0.001
Primary intracranial modality			0.342
Stent retrieval	4 (33.3%)	5 (19.2%)
Direct aspiration	8 (66.7%)	21 (80.8%)
Balloon guide catheter used	9 (75.0%)	15 (57.7%)	0.304
DWF type			0.136
MCA + ACA	11 (91.7%)	26 (100.0%)
MCA + PCA	1 (8.3%)	0 (0.0%)
Reperfusion outcomes			0.145
mTICI 0	0 (0.0%)	1 (3.8%)
mTICI 1	1 (8.3%)	1 (3.8%)
mTICI 2A	1 (8.3%)	11 (42.3%)
mTICI 2B	9 (75.0%)	13 (50.0%)
mTICI 3	1 (8.3%)	0 (0.0%)
Successful reperfusion	10 (83.3%)	13 (50.0%)	0.051
Reperfusion of newly embolized territory	11 (91.7%)	8 (30.8%)	< 0.001
Baseline DWI (ml, n = 484)	11 [8–53]	12 [4–46]	0.678
Follow-up DWI (ml, n = 427)	26 [9–95]	77 [147–184]	0.006
PH2 or SAH 3–4	0 (0.0%)	4 (15.4%)	0.151

The data are presented as the mean ± standard deviation, number (%), or median [interquartile range], as appropriate.
ASPECTS, Alberta Stroke Program Early CT scores; DWF, dynamic Willisian collateral failure; DWI, diffusion weighted images; IIO, isolated intracranial internal carotid artery occlusion; IQR, interquartile range; M1O, middle cerebral artery M1 occlusion; mTICI, modified thrombolysis In Cerebral Ischemia; NIHSS, National Institute of Health Stroke Scale; PH2, parenchymal hematoma type 2; SAH 3–4, subarachnoid hemorrhage Fisher grade 3–4tPA, tissue plasminogen activator; WCS, Willisian collateral sparing.

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