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[Hemofiltration for the reduction of lung fluid in ARDS?].

Hemofiltration has been advocated for reduction of extravascular lung water (EVLW) in both clinical and experimental ARDS. The influence of hemofiltration on EVLW was studied retrospectively in 10 patients with this syndrome. After 2 to 38 hours' hemofiltration net fluid balance was -3640 +/- 3609 ml. EVLW remained almost unchanged (from 17.6 +/- 5.4 before to 15.6 +/- 4.1 ml/kg after hemofiltration). In 4 patients a reduction of over 15% in EVLW was achieved, whereas in the remaining 6 patients EVLW changed within a range of +/- 10%. However, hemofiltration caused a decrease in cardiac output and oxygen delivery, thereby adversely affecting its benefits on EVLW and gas exchange. In ARDS hemofiltration should be performed under careful hemodynamic monitoring and only in some of the patients an immediate reduction in EVLW can be achieved.