Hypothesis for the mechanism of the Placental Incompletely Restored Feeding syndrome of the preterm infant (PI-ReFeeding syndrome).

<p>The parenteral supply of amino acids and energy maintains the cell in an anabolic state and promotes its uptake of phosphorus and potassium. This causes a decrease of their plasma concentrations in the absence of an adequate intake.</p

Calcium urine output in the 3 groups with different amino acid intake.

<p>LAA group: <1.5 g/kg/day of mean AA intake; MAA group: 1.5-2 g/kg/d of mean AA intake; HAA group: >2 g/kg/day of mean AA intake.</p

Plasma concentrations of calcium and phosphate in the 3 groups with different amino acid intake.

<p>LAA group: <1.5 g/kg/day of mean AA intake; MAA group: 1.5-2 g/kg/d of mean AA intake; HAA group: >2 g/kg/day of mean AA intake.</p

Linear regression function showing the relationship between the cumulative deficit of phosphorus intake and the plasma concentrations of calcium and phosphate.

<p>Linear regression function showing the relationship between the cumulative deficit of phosphorus intake and the plasma concentrations of calcium and phosphate.</p