Continuous Veno-Venous Hemofiltration (CVVH) can eliminate metabolic products effectively and replace renal function partly. It is widely used in intensive care units (ICUs), especially for patients with acute kidney injury/failure in an unstable hemodynamic status. Lactate is a molecule smaller than glucose, which can pass through filtration membrane freely in CVVH. Therefore, the blood lactate concentrations would no longer reflect tissue oxygenation status in patients with unstable hemodynamic status. However, there is no prospective study evaluated the effect of CVVH on lactate removal in critically ill patients. The influence of different dose of CVVH on lactate elimination is not clear in patients with different level of serum lactate. Our study aimed to find out how the dose of CVVH effects on lactate clearance, and then re-estimate the prognostic value of lactate in critically ill patients with CVVH.
Study Type
OBSERVATIONAL
Enrollment
15
Three different doses (20 ml/kg/h, 35 ml/kg/h and 45 ml/kg/h) of CVVH were applied to critically ill patients who experiencing CVVH. Each dose of CVVH was sequentially gave to each patient and lasted for 30 minutes separately
The first affiliated hospital, Sun Yat-sen University
Guangzhou, Guangdong, China
plasma lactate
Each dose of CVVH was lasted for 30 minutes separately. Blood samples were draw pre-(A) and post-dialyzer (V) site after each dosage of CVVH was carried out for 30 minutes and then plasma lactates were measured immediately
Time frame: 30 minutes
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