A 9 year old female patient (weight = 80.5 lbs) is admitted to the hospital for diabetic ketoacidosis and new onset type 1 diabetes mellitus.

The physician writes:

• 0.9% NaCl 10 mL/kg/hr
• Insulin Regular IV 0.3 units/kg/hr

i) What rate of administration (mL/min) would you instruct the nurse to give the 0.9% NaCl (2 marks)

ii) After a few hours the physician orders 1000 ml of ½ NS + D5W with 40 mmol KCl to be given at 80mL/hr. At what rate in (in mmol/kg/hr) is potassium being administered? (2 marks)

iii) What is the osmolality of the 1000 ml ½ NS + D5W with 40 mmol KCl? (4 marks)

MW [g/mol] : KCl = 74.5; NaCl = 58.4; Dextrose = 180