Recomended dose by body weight

6. Patient-based Dose 6.2) Body Weight 6.2.1) Body weight General

6.2.1.1) Drug dose based on body weight Easy 1


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A pharmacist compounds a suspension from an experimental drug capsules to contain 12 mg of drug per milliliter. Using Table shown, calculate the single dose in milliliters for a pediatric patient weighing 38.6 lb.
Body Weight Recomended dose x
5 days
15kg or less 250 mg twice daily
15.1to 23 kg 375 mg twice daily
23.1to 40 kg 500 mg twice daily
40.1 kg or more 625 mg twice daily


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lb equals 31.25 ml kg

  • Here patient's weight
    ` = 38.6 \quad lb × (0.454 \quad kg)/(1 \quad lb) = 17.5244 \quad kg `
  • Body Weight Recomended dose x
    5 days
    15kg or less 250 mg twice daily
    15.1to 23 kg 375 mg twice daily
    23.1to 40 kg 500 mg twice daily
    40.1 kg or more 625 mg twice daily
  • From Table, the dose for the pediatric patient is 375 mg.
    Therefore,
    `375 \quad mg × (1\quad ml)/(12 \quad mg) = 31.25 \quad ml` Ans.