Individualizing post-ICU nutrition: from guideline intent to bedside practice

Area of Science:

• Critical care medicine
• Nutritional science
• Patient recovery

Background:

• Increased survivorship of critical illness highlights the need for improved long-term outcomes.
• Post-intensive care unit (ICU) nutrition is crucial for functional recovery and quality of life but is often inadequate.
• Nutritional challenges stem from poorly defined physiological needs and lack of evidence-based guidance during recovery.

Purpose of the Study:

• To review the challenges and strategies for optimizing nutrition during the post-ICU recovery period.
• To identify factors contributing to nutritional inadequacy after ICU discharge.
• To propose evidence-based nutritional guidance for improved patient outcomes.

Main Methods:

• Review of current literature on post-ICU nutrition.
• Analysis of physiological demands and patient-level barriers to adequate nutrition.
• Evaluation of care transition strategies and patient/family engagement.

Main Results:

• Energy and protein intake significantly decrease post-ICU discharge despite ongoing metabolic needs.
• Underfeeding is common due to lack of recovery-specific targets, patient barriers (e.g., appetite loss, fatigue), and fragmented care.
• Patient and family engagement can enhance individualized nutrition strategies and improve feasibility.

Conclusions:

• Post-ICU nutritional failure results from physiological and implementation issues.
• The post-ICU period is a 'metabolic danger zone' requiring a shift towards nutrition supporting functional recovery and lean mass.
• Standardized, adaptable care pathways integrating patient/family input are needed to bridge ICU-to-ward transitions and improve outcomes.