Factors associated with discrepancy between prescribed and administered enteral nutrition in general ICU

Background Discrepancy between prescribed and administered enteral nutrition (EN) is a common problem during intensive care. The aim of this study was to find out the success rate and factors associated with inadequacy of enteral nutrition in a mixed general intensive care unit (ICU). Methods This was a retrospective single-center study of 892 patients with ICU length of stay (LOS) ≥4 days. The factors associated with adequacy of enteral nutrition on day 4 were analyzed. These included disease-specific factors, patient-related factors, severity of illness, and procedural factors. Results Of the 892 patients, 349 (39.1%) had an EN success rate of ≥70%, which was associated with a lower amount of prescribed enteral energy (500 kcal [500–800] vs. 800 kcal [500–1200], p < 0.001) and bolus administration of enteral nutrition (41 of 349 vs. 27 of 543, p < 0.001). Other factors impairing successful EN were severe inflammation, surgery, and GI-related admission diagnosis. Conclusions On the fourth day during ICU stay discrepancy between prescribed and administered enteral nutrition was associated to severe inflammation, GI-related diagnosis, and prescribing policy.