Enteral Phosphate Replacement in the Intensive Care Unit

Area of Science:

• Critical Care Medicine
• Nephrology
• Clinical Nutrition

Background:

• Enteral phosphate replacement offers advantages over intravenous methods.
• Optimal enteral phosphate dosing and administration remain unclear for hypophosphatemia.

Purpose of the Study:

• Compare two enteral phosphate dosing strategies (PRE vs. POST) for mild hypophosphatemia.
• Evaluate enteral phosphate dosing for moderate hypophosphatemia in critically ill patients.

Main Methods:

• Single-center, quasiexperimental study in an ICU setting.
• Included 138 adult patients receiving enteral phosphate replacement.
• Compared mild hypophosphatemia groups (48 mmol PRE vs. 72 mmol POST) and a moderate group (72 mmol).

Main Results:

• Serum phosphorus normalization occurred in 58.2% (mild PRE) and 72.7% (mild POST) of patients.
• Phosphorus levels increased by 0.4 mg/dL (mild PRE) and 0.7 mg/dL (mild POST).
• Normalization occurred in 66.7% of the moderate group, with a 1.0 mg/dL phosphorus increase.

Conclusions:

• Enteral phosphate replacement is safe and effective for mild-to-moderate hypophosphatemia.
• It serves as a potential alternative to intravenous phosphate therapy in critically ill patients.