Table 1. Incidence of vascular spasm in renal arteriography immediately after RDN procedure.

Groups	Spasm
	Control	Mild (stenosis < 25%)	Moderate (stenosis 25%−50%)	Severe (stenosis ≥ 50%)
A	1 (20%)	4 (80%)	0 (0%)	0 (0%)
B	2 (50%)	1 (25%)	1 (25%)	0 (0%)
C	0 (0%)	2 (40%)	3 (60%)	0 (0%)
D	0 (0%)	3 (75%)	1 (25%)	0 (0%)

Data are presented as n (%). RDN: renal denervation.