[Clinical evaluation of amino acid solution]

Area of Science:

• Clinical Nutrition
• Immunology
• Critical Care Medicine

Background:

• Glutamine is vital for immune function and is being incorporated into total parenteral nutrition (TPN).
• Critically ill septic patients often experience clinical and nutritional deficits despite conventional TPN.
• The role of glutamine supplementation in TPN for this patient group requires further investigation.

Purpose of the Study:

• To evaluate the impact of glutamine-supplemented TPN on clinical status, body composition, protein synthesis, and immune function in critically ill patients with sepsis.
• To assess the safety and efficacy of glutamine in TPN for patients with severe infections.

Main Methods:

• Eleven critically ill septic patients received glutamine-supplemented TPN for 10 days after a period on conventional TPN.
• Clinical status, body composition, and body water distribution were monitored.
• Venous blood samples were analyzed for cellular immunity, plasma albumin, transferrin, and triglycerides.
• Nitrogen balance was calculated daily.

Main Results:

• Patients receiving glutamine-supplemented TPN showed improved nitrogen balance, body composition, and body water distribution.
• Significant increases in plasma protein concentrations (albumin, transferrin) and immunological indices were observed.
• No adverse side effects were reported during the glutamine supplementation period.

Conclusions:

• Glutamine supplementation in TPN demonstrates beneficial effects on nitrogen balance, plasma proteins, and immune status in critically ill septic patients.
• This nutritional strategy appears safe and effective for improving outcomes in this vulnerable population.
• Further research is warranted to optimize glutamine dosage and duration in TPN for sepsis management.