Table 3.

Review of LOE of the role of DSA in the prediction of hemorrhagic transformation.

	Study	LOEa	No of Study Participants	Treatment Modality (%)	OR 95% CI, p
Poor collaterals	Bang et al.73	IV	222	IV thrombolysis and/or thrombolytic or mechanical IA therapy (100)	2.666 (1.163–6.113), p = 0.048
Angiographic blush	Omran et al.74	IV	48	IV thrombolysis and/or thrombolytic or mechanical IA therapy (100)	p = 0.01
Elevated parametric parenchymal blood flow wash-in rates	Elsaid et al.16	IV	30	IV thrombolysis and/or thrombolytic or mechanical IA therapy (100)	p = 0.024

CI: confidence interval; DSA: digital subtraction angiography; IA: intra-arterial; IV: intravenous; LOE: level of evidence; OR: odds ratio. ^aLOE adopted from Ackley et al. as follows: level 1: systematic review or meta-analysis, level II: randomized controlled trial (RCT), level III: nonrandomized controlled trials, level IV: case control studies, cohort studies, level V: meta-synthesis, and level VI: single descriptive or qualitative study.²⁰