The primary endpoint analysis showed that at 48 hours after the procedure there was no difference in delta eGFR between groups A and C ( 4.25 + / - 12.19 vs. 4.65 + / - 11.76 , P = 0.90 ) and groups B and C ( 3.72 + / - 17.42 vs. 4.65 + / - 11.76 , P = 0.82 ) .