Impact of extravascular lung water index on outcomes of severe sepsis patients in a medical intensive care unit

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Background: This study was designated to investigate whether extravascular lung water index (EVLI) is an independent predictor for mortality outcome in patients with severe sepsis. Methods: This study prospectively recruited patients with severe sepsis from a medical intensive care unit (ICU) at a university affiliated hospital. In each patient, transpulmonary thermodilution was used to measure cardiovascular hemodynamics and EVLI via an arterial catheter placed within 48 h of the patient meeting the criteria for severe sepsis. Results: In total, 33 patients were studied. EVLI, Acute Physiology and Chronic Health Evaluation (APACHE) II score, development of acute respiratory distress syndrome, chest X-ray score, lung injury score, body mass index, prior 24 h fluid balance, albumin, and white blood cell counts were shown to be predictors of in-hospital survival by a bivariate analysis. In multinominal logistic regression, EVLI (adjusted odds ratio, 6.21; p=0.01; 95% confidence interval, 1.05-1.44) acted as an independent predictor for in-hospital survival. A cut-off value for EVLI of 10 ml/kg had good sensitivity (88.2%) and specificity (68.7%) by ROC curve analysis. Medical ICU patients with extremely severe sepsis and a high EVLI (≥10 ml/kg) had lower in-hospital survival rate than those with a low EVLI (<10 ml/kg) (15% vs. 67.7%, respectively, p<0.001. Conclusions: This investigation suggested that EVLI was an independent predictor for in-hospital survival in medical ICU patients with severe sepsis. Measurement of EVLI may be used for risk stratification among those patients. © 2008 Elsevier Ltd. All rights reserved.




Chung, F. T., Lin, S. M., Lin, S. Y., & Lin, H. C. (2008). Impact of extravascular lung water index on outcomes of severe sepsis patients in a medical intensive care unit. Respiratory Medicine, 102(7), 956–961.

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