Formula Feed vs Kitchen Feed in ICU Patients

Evidence Supporting Commercial Formula Feeds

The European Society for Clinical Nutrition and Metabolism (ESPEN) guidelines recommend against using kitchen-made diets for tube feeding in the hospital setting due to technical reasons related to tube clogging and infection risk 1
Commercial formula feeds provide consistent nutritional content and are specifically designed to meet the needs of critically ill patients 2
Kitchen-made (blenderized) diets are nutritionally inconsistent, have a short shelf-life, and carry a higher risk of infection through contamination with various microorganisms 1
Tube clogging is a significant concern with kitchen-made diets, which can interrupt nutritional delivery in critically ill patients 1

Commercial formulas allow for more precise control of caloric and protein delivery, which is crucial in the ICU setting where requirements are often 25-30 kcal/kg/day and 1.3-2.0 g protein/kg/day 3, 4
Formula feeds can be selected based on specific patient needs (standard, high-protein, immune-modulating) 5

Whole protein formulas are appropriate for most ICU patients as no clinical advantage has been shown for peptide-based formulas 4, 6
Specialized formulas may be beneficial in specific situations, such as immune-modulating formulas (enriched with arginine, nucleotides, and omega-3 fatty acids) for trauma patients and those with mild sepsis 4
Glutamine-supplemented formulas are recommended for burned and trauma patients 7
Formulas containing omega-3 fatty acids and antioxidants may benefit patients with ARDS 4, 5

During the acute phase of critical illness, energy provision should be limited to 20-25 kcal/kg BW/day to avoid overfeeding 6
During recovery/anabolic phase, energy provision should be increased to 25-30 kcal/kg BW/day 6
Feeding should start at a low flow rate (10-20 ml/h) and increase gradually due to limited intestinal tolerance 1
Target intake may take 5-7 days to achieve in critically ill patients 1

Overfeeding during the acute phase of illness (>25 kcal/kg/day) may worsen outcomes 2
Hyper-alimentation (providing more energy than actually expended) should be avoided in critically ill patients 6

The European Society for Parenteral and Enteral Nutrition recommends immune-modulating formulas, containing arginine, nucleotides, omega-3 fatty acids, for trauma patients and those with mild sepsis, as these have demonstrated reduced length of stay and infection rates 8, 9
High-protein formulas may be needed to achieve the 1.3-2.0 g/kg/day protein target in hypercatabolic patients 9

Parenteral nutrition should only be used when enteral nutrition is contraindicated or when enteral feeding fails to meet requirements after 3-7 days in severely malnourished patients, and even then, commercial parenteral formulations should be used 8, 10