Table 2.

Results from systematic analysis of 21 studies on transradial approach for neurointervention

Study variables
Number of studies	21
Total number of patients	1342
Number of female patients*	315/742 (42.4%)
Median age in years (range)	66.2 (48.5–86)
Indication
Aneurysm treatment	423
Mechanical thrombectomy	127
Carotid artery stenting	616
Tumor embolization	22
Others (vertebrobasilar angioplasty and stenting, embolization of arteriovenous malformation, dural arteriovenous fistula and tumor, balloon test occlusion)	154
Left-sided lesions †	391/692 (56.5%)
Anterior lesions‡	816/955 (85.4 %)
Complications
Major	2 (0.15%)
Minor	37 (2.75%)
Crossovers to transfemoral approach
Secondary to access site issues	7 (0.52%)
Difficult to engage in target vessel	57 (4.24%)

*Gender was reported only in 660 patients of the total 842 patients.

†Side of the lesion was reported only in 692 patients of the total 1342 patients.

‡Location of lesion was described only in 955 patients of the 1424 patients.