Source: Annual Congress 2002 - Treatment and outcome of acute respiratory failure in chronic disease
Disease area: Respiratory critical care

Abstract

In the practice of intensive care units there are many attempts to classify the degree of heaviness of the shock states and appreciate the prognostic value of different complexes of parameters. In this work we try to explore the prognostic value of several respiratory and metabolic parameters which are commonly used daily for estimation of the status of critically ill patients by means of logistic regression analysis.
In this investigstion we studied 215 critically ill patients treated in ICU divided into six groups (multiple trauma, sepsis, acute head injury, heavy burns and others). 111 are survivors and 101 ? nonsurvivors. By means of analysis of arterial blood were mesured or calculated the values of 21 acid-base, respiratory and metabolic parameters in admission of the patients, 3-4 days after and before discharge or death. The statistical analysis was performed by SPSS programme. By means of logistic regression analysis we found that for prognosis of greatest usefulness are the changes in values of blood lactate, extracellular base exsess, Pa/A O2 (arterio-alveolar ratio of O2) and pH. They give the distribution of prognostic factors for survivors and nonsurvivors in over than 75% of cases and we were able to obtain an equation for practical scoring guide system to evaluate the actual patient's status.
Estimation of this complex of parameters by means of logistic regression represents some additional possibility to appreciate the prognosis of the patients.

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M. G. Tzareva, M. Vukov, A. A. Christova, S. S. Todorova (Sofia, Bulgaria). Estimation of the prognostic value of respiratory and metabolic parameters in treatment of shock patients by means of logistic regression analysis. Eur Respir J 2002; 20: Suppl. 38, 606

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