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Precise Nutrition with Precision

Learn about the importance of precise nutrition in critical illness and how to assess, diagnose, and intervene for optimal patient care. Discover the benefits of early enteral nutrition, the common problems associated with delivery and tolerance of EN, and the significance of energy and protein requirements in critical illness.

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Precise Nutrition with Precision

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  1. Precise Nutrition with Precision ISCCM Day

  2. Precise Nutrition with Precision Assessment:

  3. Nutritional Screening Rapid and simple evaluation

  4. Nutritional Assessment tools

  5. Precise Nutrition with Precision Diagnosis:

  6. GLIM criteria To diagnose malnutrition at least one phenotypic criterion and one etiologic criterion should be present. Phenotypic metrics for grading severity are proposed. It is recommended that the etiologic criteria be used to guide intervention and anticipated outcomes.

  7. Precise Nutrition with Precision Intervention:

  8. Hemodynamically stable

  9. Early feeding reduces mortality in ICU 1 2

  10. Enteral nutrition“If the gut works, use it” • Maintains GI tract function and integrity • Stimulates GI contractility and trophic substance release • Supports gut and mucosa associated lymphoid tissues • Preserves gut microbiota McClave SA, Heyland DK. The physiologic response and associated clinical benefits from provision of early enteral nutrition. Nutr Clin Pract 2009;24:305-315.

  11. Nutritional adequacy is associated with improved outcomes in critical illness Nutritional adequacy (% of requirement) >80% 50-<80% 0-<50% Improved 6-mo survival & physical recovery 3 mos post-ICU discharge per 25% increase in nutritional adequacy

  12. Study Site # Patients % of Goal Baltimore. MD1 129 52% Chicago, IL2 39 64% Nashville, TN3 55 50-70% Cleveland, OH7 59 50% *Methods of nutrition goal determination varied amongst studies % Enterally Fed Patients Meeting Nutritional Goal* Study Site # Patients % Patients Palo Alto, CA4 60 32% Cleveland, OH5 360 14% Kansas City, KS6 77 44-50% *Methods of nutrition goal determination varied amongst studies. 5 EN fed to 85% patients. 6 PN fed to 28.5% of patients. Inadequate Delivery of Enteral Nutrition Is Common % of Nutritional Goal* Met by Enterally Fed Patients • Frequent problems are associated with the delivery and tolerance of EN • Discrepancies exist between the delivered vs. prescribed EN 1. Krishnan JA, Parce PB, Martinez A, et al. Chest. 2003;124:297-305.; 2 . Elpern EH, Stutz L, Peterson S, et al. Am J Crit Care. 2004;13:221-227.; 3. Rice TW, Swope T, Bozeman S, et al. Nutrition. 2005;21:786-792.; 4. O'Leary-Kelley CM, Puntillo KA, Barr J, et al. Am J Crit Care. 2005;14:222-231.; 5. Higgins PA, Daly BJ, Lipson AR, et al. Am J Crit Care. 2006;15:166-176.; 6. Hise ME, Halterman K, Gajewski BJ, et al. J Am Diet Assoc. 2007;107:458-465.; 7. O'Meara D, Mireles-Cabodevila E, Frame F, et al. Am J Crit Care. 2008;17:53-61.

  13. Early EN is the preferred route, but is often poorly tolerated in ICU patients with GI dysfunction. Therefore, early supplemental PN must be promptly initiated, so as to prevent underfeeding andthe resulting energy-protein gapassociated complications.

  14. Preliminary discussion from SPN study • Early EN within 24 hours in ICU patients on mechanical ventilation reduces energy deficit & maintains gut function • However, poor EN tolerance indicates gut dysfunction–this sign of a “sick gut” is an important warning signal • Persistent GI intolerance on day 3 automatically selects patients who will require supplemental PN • Early EN with early supplemental PN improves outcomes: • Significant reduction in new infections • Increase in antibiotic-free days • Reduced time on mechanical ventilation

  15. Energy requirements in critical illness • Energy deficits accumulate quickly during the 1st wk in ICU and are not completely preventable. • It is necessary to identify safe minimal and maximal amounts. The best approach is indirect calorimetry. • If not available, provide 20-25 kcal/kg (early acute phase), and increase to 25-30 kcal/kg in stabilized patients. • The target for total energy intake (PN + ON/EN) should be within 23-27 kcal (including energy from proteins) per kg ABW or IBW (whatever applies) per day. • In severely stressed patients, up to 30 kcal/kg ABW/d may be given temporarily • Braga et al: ClinNutr 2009; 28: 378–86 • Mohandas et al. Nat Med J India 2003; 16: 29-33 • Singer et al. Intensive care. ClinNutr 2009; 28: 387–400 • Chowdary et al. Indian J Anaesth 2010; 54: 95–103

  16. Protein requirements in critical illness • A high protein intake (1.5 g/kg/d) is recommended during the early phase of ICU stay, regardless of calorie intake • Later on during the ICU stay, a high protein intake remains recommended, but it should be combined with a sufficient amount of energy to avoid proteolysis due to fuel energy deficit • Observational studies suggest patients may benefit from ‘more’ protein (regardless of BMI levels) • Daily protein targets between 1.2–2.0 g/kg are reasonable • There is no compelling evidence for 1.2 g/kg as minimal dose, while patients with unstable renal function in ICU may not benefit from 2.0 g/kg • Protein dosing is a hot topic and may lead to reduced mortality, but more well done multi-centre RCTs are needed to define target range

  17. Implementation of PN in current practice (2016) Better control of hyperglycemia (lipids + glucose) Improved lipid formulations (less pro- inflammatory) Higher protein delivery- closer to requirements 3-chamber bags (Pre-filled AIOs) Vigilant central line care P Wischmeyer, Future of Critical CareMedicine, Hong Kong, Apr 2016

  18. Optimizing PN delivery with all-in-one bags For administration of PN an all-in-one (3CB) should be preferred instead of multibottle system (B) Clinical Nutrition 36 (April 2017) 623-650 doi: 10.1016/j.clnu.2017.02.013. PN admixtures should be administered as a complete all-in-one bag The use of standardized commercially available PN may be considered in ICU patients when the formulation meets the metabolic needs of the patient.

  19. Precise Nutrition with Precision Monitoring/Evaluation:

  20. Clinical data monitored daily • History: fever, h/s/o fluid overload or glucose and electrolyte imbalance. • Vital signs: Temp., HR, BP, RR • Fluid balance: input/output chart, weight • Local care: inspection and dressing of site of vascular access. • Delivery system: inspection of solution for contamination and functioning of infusion pump.

  21. Laboratory data Monitoring response to nutritional therapy: Improvement in clinical status, Protein concentrations (Albumin, prealbumin, transferrin)

  22. To summarize nutrition therapy…. • Patients admitted in ICU should be screened for pre-existing malnutrition or nutrition risk (for nutrition related complications). • When nutrition risk is identified, it should be optimized by provision of appropriate nutrition therapy. • Early EN provides both nutritional benefits as well as non-nutritional benefits, but may be associated with poor tolerance due to the gut dysfunction associated with critical illness. • Early supplemental PN assures adequate delivery of energy, protein & nutrients to minimize risk and improve clinical outcomes. Enhance nutrition with specialized substrates like Immunonutrients

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