A child weighing 12kg is to receive 4mg/kg of phenytoin daily as anticonvulsant. How many ml of pediatric phenytoin suspension containing 30mg/5ml should the child receive?
To calculate the amount of pediatric phenytoin suspension the child should receive, we need to first find the total amount of phenytoin that the child needs per day.
Total amount of phenytoin needed per day = Weight of the child (in kg) x Dose of phenytoin per kg
Given that the child weighs 12kg and the dose of phenytoin per kg is 4mg/kg, we can calculate:
Total amount of phenytoin needed per day = 12kg x 4mg/kg
Total amount of phenytoin needed per day = 48mg
Now, we need to find out how many ml of pediatric phenytoin suspension containing 30mg/5ml is required to administer 48mg of phenytoin.
Using the ratio: 30mg/5ml = 48mg/x ml
Cross-multiplying, we get:
30mg * x ml = 5ml * 48mg
Simplifying:
30x = 240
x = 240/30
x = 8
Therefore, the child should receive 8 ml of pediatric phenytoin suspension.