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Figure 2 Whole-body (top panel), cardiac (middle panel) and renal (bottom panel) NE SP in patients with CHF as compared with healthy subjects before (B) and after the lower (BNP1) and higher (BNP2) BNP dose. *p < 0.05 between groups; p < 0.05 after BNP infusion versus baseline; p < 0.05 response to BNP between different groups. BNP = brain, or b-type, natriuretic peptide; CHF = congestive heart failure; NE = norepinephrine; SP = spillover.