Figure 4.

Amount of Na⁺ lost and consumed after furosemide and 120 min access to 0.5 M NaCl and water. As can be seen, furosemide-treatment caused ≈ 2.2 mEq of Na⁺ to be lost in urine, which is similar to the amount consumed by controls. In contrast, sham-drinking rats ingested ≈ 7.5 mEq of Na⁺ nearly twice the amount of that lost in urine or consumed by controls. * = significantly greater than Na⁺ lost in urine or consumed by controls rats P < 0.05.