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Hypouricemia in total parenteral nutrition
The American Journal of Clinical Nutrition
|December 1, 1980
Summary
Total parenteral nutrition (TPN) can cause profound hypouricemia, lowering serum uric acid levels. Uric acid levels normalize within seven days after discontinuing TPN, but the exact cause remains unidentified.
Area of Science:
- Clinical Nutrition
- Nephrology
- Metabolic Disorders
Background:
- Total parenteral nutrition (TPN) is a complex nutritional support method.
- Profound hypouricemia has been observed in patients undergoing TPN.
- The underlying mechanisms for TPN-induced hypouricemia are not fully understood.
Purpose of the Study:
- To investigate the development of hypouricemia in patients receiving TPN.
- To determine the time course of serum uric acid changes during and after TPN.
- To explore potential explanations for TPN-associated hypouricemia.
Main Methods:
- Observational study of patients receiving TPN.
- Monitoring of serum uric acid levels throughout TPN.
- Measurement of urinary uric acid and uric acid clearance before and during TPN.
Main Results:
- A significant number of patients developed profound hypouricemia during TPN.
- Nadir serum uric acid levels (1-2.7 mg/100 ml) occurred between days 2 and 17.
- Serum uric acid returned to baseline within 7 days of TPN cessation.
- The exact cause of hypouricemia was not identified.
Conclusions:
- TPN is associated with a significant risk of developing hypouricemia.
- The hypouricemic effect of TPN is reversible upon discontinuation.
- Further research is needed to elucidate the specific mechanisms responsible for TPN-induced hypouricemia.