Effect of total parenteral nutrition on liver function

Area of Science:

• Clinical Medicine
• Gastroenterology
• Nutritional Science

Background:

• Prolonged total parenteral nutrition (TPN) in adults is associated with a high incidence of liver dysfunction.
• Monitoring liver function is crucial for patients receiving long-term nutritional support.

Purpose of the Study:

• To investigate the incidence of liver dysfunction in adult patients undergoing TPN for over two weeks.
• To identify factors that may mitigate TPN-associated hepatic alterations.

Main Methods:

• Prospective study of 36 adult patients receiving TPN for >2 weeks (Jan 1979 - Mar 1980).
• Caloric intake was limited to 125% of energy expenditure, with fat comprising 50% of non-protein calories.
• Liver function tests (LFTs), including serum alkaline phosphatase, SGPT, SGOT, and bilirubin, were monitored.

Main Results:

• Elevated serum alkaline phosphatase occurred in 14% of patients.
• Increased SGPT values were observed in 11% of patients.
• One patient exhibited elevated SGOT and serum bilirubin.

Conclusions:

• TPN-induced liver dysfunction may be reduced by optimizing calorie administration to meet individual patient needs.
• Incorporating fat into TPN formulations appears to be a protective strategy against hepatic alterations.
• Further research into the etiology of TPN-associated hepatic dysfunction is warranted.