tokens: In canrenoate - treated rats , ANP infusion caused greater increases in sodium excretion ( FENA from 3 . 05 + / - 0 . 71 to 7 . 21 + / - 0 . 45 % ; P < 0 . 05 ; n = 8 ) than saline infusion ( FENA from 4 . 16 + / - 1 . 11 to 5 . 47 + / - 0 . 66 % ; n = 6 ) , despite the hypocapnia .