Document Detail


Renal blood flow in experimental septic acute renal failure.
MedLine Citation:
PMID:  16641923     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Reduced renal blood flow (RBF) is considered central to the pathogenesis of septic acute renal failure (ARF). However, no controlled experimental studies have continuously assessed RBF during the development of severe septic ARF. We conducted a sequential animal study in seven female Merino sheep. Flow probes were implanted around the pulmonary and left renal arteries. Two weeks later, systemic hemodynamics and RBF were monitored continuously during a 48-h control period and, after a week, during a 48-h period of hyperdynamic sepsis induced by continuous Escherichia coli infusion. Infusion of E. coli induced hyperdynamic sepsis with significantly increased cardiac output (3.8+/-0.4 vs 9.8+/-1.1 l/min; P<0.05), decreased mean arterial pressure (89.2+/-3.2 vs 64.3+/-5.3 mm Hg; P<0.05), and increased total peripheral conductance (42.8+/-3.5 in controls vs 153.7+/-24.7 ml/min/mm Hg in septic animals; P<0.05). Hyperdynamic sepsis was associated with marked renal vasodilatation (renal conductance: 3.0+/-0.7 vs 11.4+/-3.4 ml/min/mm Hg; P<0.05) and a marked increase in RBF (262.3+/-47.7 vs 757.4+/-250.1 ml/min; P<0.05). Serum creatinine increased over 48 h (73+/-18 vs 305+/- micromol/l; P<0.05) whereas creatinine clearance decreased (95.5+/-25.9 vs 20.1+/-19.3 ml/min; P<0.05). After 24 h, urine output decreased from 1.4 to 0.3 ml/kg/h (P<0.05). Infusion of E. coli induced hyperdynamic sepsis and ARF. Septic ARF in this setting was associated with a marked increase in RBF and with renal vasodilatation.
Authors:
C Langenberg; L Wan; M Egi; C N May; R Bellomo
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Kidney international     Volume:  69     ISSN:  0085-2538     ISO Abbreviation:  Kidney Int.     Publication Date:  2006 Jun 
Date Detail:
Created Date:  2006-05-25     Completed Date:  2006-10-26     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  0323470     Medline TA:  Kidney Int     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1996-2002     Citation Subset:  IM    
Affiliation:
Department of Nephrology, Charité Campus Mitte, Berlin, Germany.
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MeSH Terms
Descriptor/Qualifier:
Animals
Female
Hemodynamics
Kidney Failure, Acute / etiology*,  physiopathology*
Renal Circulation
Sepsis / etiology*,  physiopathology*
Sheep

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