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Titolo:
EFFECT OF DOPAMINE ON RENAL BLOOD-FLOW AND CARDIAC-OUTPUT
Autore:
GORDON IL; WESLEY R; WONG DH; INGEGNO MD; SPIVAK B; WILSON SE;
Indirizzi:
UNIV CALIF IRVINE,IRVINE MED CTR,DEPT SURG,101 CITY DR ORANGE CA 92668 UNIV CALIF IRVINE,IRVINE MED CTR,DEPT CARDIOL ORANGE CA 92668 UNIV CALIF IRVINE,IRVINE MED CTR,DEPT ANESTHESIA ORANGE CA 92668 VET AFFAIRS MED CTR LONG BEACH CA 00000
Titolo Testata:
Archives of surgery
fascicolo: 8, volume: 130, anno: 1995,
pagine: 864 - 868
SICI:
0004-0010(1995)130:8<864:EODORB>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
LOW-DOSE DOPAMINE; DEVELOPING SWINE; DOBUTAMINE; DOGS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
21
Recensione:
Indirizzi per estratti:
Citazione:
I.L. Gordon et al., "EFFECT OF DOPAMINE ON RENAL BLOOD-FLOW AND CARDIAC-OUTPUT", Archives of surgery, 130(8), 1995, pp. 864-868

Abstract

Objective: To characterize the relationship between changes in renal blood flow and cardiac output induced by dopamine, hypothesizing that at low doses renal blood flow changes more than cardiac output. Design: Anesthetized swine had renal blood now and cardiac output measured during either continuous dopamine infusions (2 to 8 mu g/kg per minute)or bolus dosing (1 to 16 mu g/kg), and increases in both were compared. Two different fluid protocols were compared using constant dopamineinfusions. In the constant pulmonary capillary wedge pressure protocol, intravenous fluids were titrated to keep this parameter constant. In the other protocol, fluid therapy was held constant at 10 mL/kg per hour. Results: With infusions, mean increases in renal blood flow and cardiac output were relatively equal. The maximum increase was 35% at 8 mu g/kg per minute under the constant pulmonary capillary wedge pressure protocol, with no significant differences (P>.1) found between the change in renal blood flow and cardiac output at any dose in either protocol. With bolus dosing, renal blood flow increased significantly more than cardiac output at 1, 4, and 8 mu g/kg (P<.05). Conclusion: Disproportionate increases in renal blood flow compared with cardiac output at low bolus doses show initial renal responses to be independentof cardiac output. The infusion data suggest that renal responses exhibit tachyphylaxis or that cardiac output slowly accommodates to decreased total peripheral resistance.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/03/20 alle ore 19:33:04