Protein requirements for hepatic failure should be determined in the same manner as which group?

• A. Outpatients with no illness
• B. Patients with chronic kidney disease
• C. General ICU patient
• D. Pediatric patients

Answer: (C)

In hepatic failure, protein needs are driven by the same logic used for any critically ill patient: the body is in a hypercatabolic state and tends to lose lean mass, so protein should be dosed based on the level of metabolic stress rather than the organ involved. The best way to determine requirements is to use the approach used for general ICU patients, balancing nitrogen needs with overall energy intake to spare protein.

Practically, this means aiming for adequate calories to prevent protein from being used for energy (roughly 25–30 kcal/kg/day in many critically ill adults) and a protein target in the range of about 1.2–1.5 g/kg/day, with adjustments for tolerance, renal or hepatic function, and the patient’s nitrogen balance. In hepatic failure, there is a historical note about encephalopathy that can influence protein management, but the baseline method to determine the amount remains the same as in critically ill patients—assess catabolic needs and adjust accordingly.

Other patient groups have different considerations that can override this approach: outpatients with no illness typically need less protein, chronic kidney disease often requires protein modification to protect renal function, and pediatric patients have growth-related needs. The general ICU framework best captures the determinants of protein requirement in hepatic failure because it centers on illness severity and catabolism rather than a liver-specific rule.