The child should intake <u>635mg</u> aspirin medicine per dose.
Aspirin is no longer the drug of first choice because of the increased frequency of gastric toxicity and hepatotoxicity when compared to other NSAID medications.
Calculation:
Step 1. Convert pounds to kg:
70 lb × 1 kg/7.0 lb
= 31.75 kg
Step 2. Calculate the dose in mg:
31.75 kg × 80 mg/kg/day
= 2540 mg/day
Step 3. Divide the dose by the frequency:
2540 mg/day ÷ 4 (BID)
= 635 mg/dose QID
Thus, we conclude that the child needs to intake 635 mg/dose of aspirin QID.
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