Selection of blood sampling source to measure lactate levels in patients with septic shock
Keywords:lactate, septic shock, arterial blood, venous blood
The initial lactate level has been used as one of mortality predictors in patients with septic shock. Different studies measured the concentrations of blood lactate obtained from different vessels. Even in some retrospective studies, blood lactate levels from heterogeneous sources (artery, central vein, and peripheral vein) have been used. Practicing physicians face following questions: what data have the best predictive value, can they replace each other? In our observations, а high positive linear correlation was found between lactate concentrations in arterial and central venous blood (R = 0.895; P < 0.001). Both indicators have satisfactory values for predicting treatment outcome. Lactate level in arterial blood had a slightly better predictive value compared to its concentration in central venous blood.
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