Nutritional support in critical care patients: Challenges, strategies, and recent advances

Nutritional support is a critical component of managing patients in intensive care units (ICUs). Critical illness triggers a hypermetabolic state, leading to significant nutritional demands and muscle wasting. Proper nutritional interventions can positively impact clinical outcomes, reduce the duration of mechanical ventilation, and improve overall recovery. However, delivering adequate nutrition to critically ill patients present several challenges, including the patient's unstable condition, varying metabolic needs, gastrointestinal dysfunction, and difficulties in achieving nutritional goals. Recent advances in understanding the nutritional requirements of ICU patients, the role of early enteral nutrition, and the development of specialized formulas have led to improved patient care. Strategies such as personalized nutrition, immunonutrition, and monitoring tools like indirect calorimetry have become essential components of ICU nutrition management. Additionally, managing critically ill patients with comorbidities, such as sepsis or multi-organ failure, requires tailored approaches to prevent malnutrition and overfeeding. This review highlights the key challenges associated with nutritional support in critical care, current strategies employed to optimize nutrition, and the recent advances in the field. Evidence-based practices with individualized care, nutritional support can enhance patient recovery, reduce ICU stay, and lower morbidity and mortality rates.