PSA

Question 1

What are the quantities of electrolytes in adult maintenance fluids?

Answer 1

25-30ml/kg/24hr water
1mmol/kg/24hr Na, K, Cl
50-100g/24hr glucose

Usually prescribed as 0.9% sodium chloride with added potassium and glucose

Question 2

What are the different fluid options available?

Answer 2

• Sodium chloride 0.9% 1000ml -150mmol Na
• Potassium chloride 0.3%ml 1000ml - 40mmol K
• Potassium chloride 0.15% 1000ml - 20mmol K
• Glucose 5% 1000ml - 50g glucose

Question 3

What are the quantities of electrolytes in paediatric maintenance fluids?

Answer 3

<10kg: 100ml/kg/24hr (1L total)
then 10-20kg 50ml/kg/24hr
then >20kg 20ml/kg/24hrs

Max 2L in females
Max 2.5L in males

Typical choice: sodium chloride 0.9%/Glucose 5%

Question 4

What is the prescription for resuscitation fluids in children?

Answer 4

NaCl 0.9% 20mls/kg over 15 mins

Question 5

What is the typical fluid prescription for hypoglycaemia?

Answer 5

Glucose 20% or 10% 100mls over 15mins

Question 6

What is the typical fluid prescription for hypercalaemia?

Answer 6

NaCl 0.9%
1000mls over 4 hrs

Question 7

What is the fluid prescription for hypokalaemia?

Answer 7

NaCl 0.9%/Potassium chloride 0.3%
1L over 4 hrs

Question 8

How is volume, dose, and concentration calculated?

Answer 8

d
/
v x c

Question 8

How is rate of drug calculated?

Answer 8

rate= dose/time
or
rate= dose per time/concentration