TTR and ventilator-associated pneumonia: The study investigates the association between illness severity and feeding complications, length of ICU stay, length of hospital stay, ventilator-associated pneumonia (VAP), hospital mortality rate, serum albumin, serum prealbumin, nitrogen balance (NB), and nutritional intake over a 21-d study period in critically ill patients receiving enteral feeding within or after 48 h of ICU admission.