Dose calculation based on BSA

6. Patient-based Dose 6.3) Body Surface Area 6.3.1) Body Surface Area

6.3.1.2) Dose based on BSA Easy 1


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What will be the approximate dose for a patient with a BSA of 0.71 m2 If the adult dose of a drug for the patient is 50 mg?


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lb equals 35.50 mg kg

  • Here Patient's BSA = 0.71 `m^2`
  • Adult dose for patient = 50 mg


  • We know that,
    Patient's dose (mg) = `(Patient's \quad BSA \quad m^2)/(1.73 \quad m^2)` × Drug dose (mg)

    Patient's Dose = `(0.71 \quad m^2)/(1.73 \quad m^2)` × 50 mg = 35.5 mg Ans.


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