An infant (body weight 2.4 kg) is prescribed total parenteral nutrition. The parenteral nutrition formula contains 55 ml of dextrose 10% in a total volume of 550ml to be infused over 24 hours. (Molecular weight of dextrose = 180)

What is the rate of dextrose infusion (in mg/kg/min)? (3 marks)

Dextrose 10% = 10g/100ml

-> 55 mls will contain 5.5g (5500mg) of dextrose.

5500mg dextrose infused over 24 hours (1440 min)

Infant body weight = 2.4 kg

Rate of dextrose infusion in mg/kg/min

5500 mg/ 2.4 kg / 1440 min

= 1.59 mg/kg/min

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