Plasma CO2 Removal Due to CRRT and Its Influence on Indirect Calorimetry

blood gas analysis of blood on different sample points and dialysis fluid

Using local protocol: stop and disconnect CRRT, replace filter and reconnect and restart CRRT.

monitor patients during the whole study period with indirect calorimetry

Replace citrate predilution with NaCl

repeat blood gas analysis of blood on different sample points and dialysis fluid

double the ultrafiltration fluid by augmenting post dilution fluid and keeping ultrafiltration at the same rate.

repeat blood gas analysis of blood on different sample points and dialysis fluid

pause parenteral and enteral nutrition before indirect calorimetry is performed. and restart after first blood analysis for vitamine status

blood analysis for vitamin and trace elements. Perform this blood analysis after restart of CRRT but before restart of nutritional therapy, 30 minutes after restart of nutritional therapy and 24h after restart of nutritional therapy.