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Journal of the American Society of Nephrology, Vol 4, 162-167, Copyright © 1993 by American Society of Nephrology

REGULAR ARTICLES

Low-dose atrial natriuretic factor and furosemide in experimental acute congestive heart failure

DL Fett, PG Cavero and JC Burnett Jr
Department of Medicine, Mayo Clinic, Rochester, MN.

This study was designed to address three objectives in an experimental model of acute congestive heart failure (CHF) in the dog produced by rapid ventricular pacing. The first objective was to characterize cardiorenal and humoral responses before and during 2 h of acute CHF. The second objective was to determine the modulating action of iv furosemide upon these biologic responses to acute CHF, testing the hypothesis that furosemide-mediated natriuresis is associated with activation of the renin-angiotensin-aldosterone system (RAAS) compared with the control group. The third objective was to determine the modulating action of continuous low-dose atrial natriuretic factor (ANF) administration during acute CHF upon these biologic responses, testing the hypothesis that exogenous low-dose ANF would prevent activation of the RAAS and enhance the natriuretic action of furosemide. In the control group (Group 1; N = 6), plasma ANF increased after the onset of CHF; GFR and sodium excretion were maintained without activation of this RAAS despite arterial hypotension. In Group 2 (N = 6), furosemide in acute CHF increased sodium excretion but in association with a decrease in GFR and activation of the RAAS. Low-dose exogenous ANF and furosemide (Group 3; N = 6) in acute CHF were associated with a maintenance of GFR, no activation of the RAAS, and potentiation of furosemide-induced natriuresis. In summary, these studies demonstrate that furosemide potently increases sodium excretion in acute CHF, but with a decrease in GFR and activation of the RAAS. Low-dose ANF in acute CHF with furosemide maintains GFR, attenuates activation of the RAAS, and potentiates natriuresis.


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 Am. J. Physiol. Regul. Integr. Comp. Physiol.Home page
F. L. Martin, T. Supaporn, H. H. Chen, S. M. Sandberg, Y. Matsuda, M. Jougasaki, and J. C. Burnett Jr.
Distinct roles for renal particulate and soluble guanylyl cyclases in preserving renal function in experimental acute heart failure
Am J Physiol Regulatory Integrative Comp Physiol, October 1, 2007; 293(4): R1580 - R1585.
[Abstract] [Full Text] [PDF]


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