Ordered: Methotrexate Sodium 0 $\sqrt{\frac{\text { Height in } \mathrm{cm} \times \text { weight in } \mathrm{kg}}{3600}}$

Essay

Ordered: Methotrexate sodium 0.25 g for child with lymphoma who weighs 80 lb and is 125 cm tall.
SDR: 200-500 mg per m² every 2-4 weeks for lymphoma.
BSA formula for m²: $\sqrt{\frac{\text { Height in } \mathrm{cm} \times \text { weight in } \mathrm{kg}}{3600}}$ .
a. BSA for this child (calculate formula)
b. SDR for this child
c. Ordered dose
d. Evaluation and decision