Intravenous nutrition (IVN) and fluids calculator: preterm infants

This document is only valid for the day on which it is accessed. Please read our .

This calculator is designed to provide maximal nutritional intakes for the majority of infants who require IVN using Starship Child Health NICU standard IVN solutions.

  • Our standard solutions are designed to meet the infant's usual nutritional requirements in a relatively small volume of fluid.

  • P100 is the standard (amino acid and glucose) solution we use and can be administered via a central or peripheral line.

  • P100 is given at a maximum volume of 96 ml/kg/day for infants ≤ 1000 g, which will provide 4.0 g/Kg/day of protein.

  • For Infants >1000 g, the usual maximum is 90 ml/Kg/day providing 3.8 g/Kg/day of protein.

  • We also use a standard lipid solution with vitamins added called PremSMOF.

  • The remainder of the fluid requirement is made up with 10% glucose.

  • Occasional infants will require an individualised IVN solution.

Please consider carefully whether the infant requires IVN or whether 10% glucose (with or without additives) can be used.  In general, larger infants (>1500 g) who are expected to feed quickly should not be prescribed IVN. 


Patient Data

Date of fluid order



  Enter a surname if the order is to be printed.

Hospital Number

   Enter a hospital ID number if the order is to be printed.

Age of baby


Working weight

g Click here to open the term infant IVN worksheet

Planned daily fluid intake

to be given over
IVN and lipid may be given over a period <24 hours if the baby is receiving intermittent infusions that interrupt fluid administration.

Arterial line fluids


Other infusions
(excluding insulin)

  • Please cons ider whether the infusions should be made up in 5% glucose, 10% glucose, 0.45% NaCl, or 0.9% NaCl.



Oral feeds

ml every hours

IVN amino acid solution

Maximal desired intake: ml/kg/day.
This is the most that you want the baby to receive, even if the baby can tolerate a greater intake.
Maximum possible intake:
Based on current oral feeds and the maximum you have set above.
Actual intake:
  • Protein intakes will be limited to 4g/kg/day from the IVN amino acid solution, and a total of 4.5g/kg/day of combined IVN and oral protein.

Additional glucose

Glucose. Heparin (250U/500ml) is not necessary unless running through a separate lumen.
  • Note:   If you are printing out this page, the printed version will have smaller text than is visible on the screen.
    If the printed page does not fit correctly, adjust the page margin settings via your browser or select landscape paper orientation.

IVN and Fluid Order

Date of order Name
Working weight Hospital number



Fluid Type (and special instructions)




Oral fluids




Nutritional Information


Total Energy Intake


Energy from P100


Protein - P100


Protein - total


Fat - Lipid


Carbohydrate - P100


Carbohydrate - additional glucose


Carbohydrate - P100 and additional


Oral feeds


Electrolytes and Minerals


  • This value excludes flushes and medications.


  • This value excludes infusions and medications.