Question

a child is receiving haldol 1 mg po bid. the recommended dosage for haldol is 0.05 to 0.075 mg/kg/day. if a child weighs 20 kg. 1) what is the minimum and maximum safe dosage range for this child? 2) is the daily dosage safe?

Explanation:

Step1: Calculate minimum dosage

Multiply minimum dosage - rate by weight.
$0.05\times20 = 1$ mg/day

Step2: Calculate maximum dosage

Multiply maximum dosage - rate by weight.
$0.075\times20=1.5$ mg/day

Step3: Calculate current daily dosage

The child takes 1 mg PO BID (twice - a - day), so current daily dosage is $1\times2 = 2$ mg/day

Answer:

1. Minimum safe dosage: 1 mg/day, Maximum safe dosage: 1.5 mg/day
2. No, the daily dosage of 2 mg is not safe as it exceeds the maximum safe dosage of 1.5 mg/day.