Initial lactate level and mortality in septic shock patients with hepatic dysfunction

An elevated serum lactate level is associated with morbidity and mortality in patients with severe sepsis and septic shock. In patients with hepatic dysfunction, however an elevated serum lactate level may be due to either impaired lactate clearance or excessive production. Thus, we evaluated whethe...

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Bibliographic Details
Published in:Anaesthesia and intensive care 2011-09, Vol.39 (5), p.862-867
Main Authors: KANG, Y. R, UM, S.-W, KOH, W.-J, SUH, G. Y, CHUNG, M. P, KIM, H, KWON, O. J, JEON, K
Format: Article
Language:English
Subjects:
Aged
Anesthesia
Anesthesia. Intensive care medicine. Transfusions. Cell therapy and gene therapy
Biological and medical sciences
Female
Hospital Mortality
Humans
Lactates
Lactic Acid - blood
Liver diseases
Liver Diseases - blood
Liver Diseases - complications
Male
Medical sciences
Middle Aged
Mortality
Odds Ratio
Patient outcomes
Physiological aspects
Retrospective Studies
Septic shock
Shock, Septic - blood
Shock, Septic - complications
South Korea
Survival Analysis
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Summary:An elevated serum lactate level is associated with morbidity and mortality in patients with severe sepsis and septic shock. In patients with hepatic dysfunction, however an elevated serum lactate level may be due to either impaired lactate clearance or excessive production. Thus, we evaluated whether the initial serum lactate level was also associated with mortality in septic shock patients with hepatic dysfunction. A retrospective observational study enrolled 307 patients with septic shock admitted to the intensive care unit (ICU) between May 2007 and July 2009. Hepatic dysfunction was defined as a serum total bilirubin > 34.2 micromol/l (2 mg/dl). Selected patients were divided into high (> or = 4 mmol/l) and low (< 4 mmol/l) lactate groups, according to the initial serum lactate level. Of 307 patients with septic shock, 118 (38%) patients with hepatic dysfunction were eligible for this study. The median lactate levels were 5.9 (interquartile range 4.7 to 9.0) and 2.6 (interquartile range 1.7 to 3.2) mmol/l for the high and low lactate groups respectively (P < 0.001). The initial serum lactate level was strongly associated with in hospital mortality in a univariate analysis (P < 0.001). After adjusting for potential confounding factors, the initial serum lactate level remained significantly associated with in-hospital mortality (odds ratio 1.281, 95% confidence interval 1.097 to 1.496, P = 0.002). In conclusion, the serum lactate level could be useful in predicting the outcome of patients with septic shock regardless of hepatic dysfunction.
ISSN:0310-057X
1448-0271
DOI:10.1177/0310057X1103900510