The physician orders cyclophosphamide (Cytoxan) 100 mg/m2/day orally in two divided
doses. D.W. weighs 140 pounds and is 5 feet, 4 inches tall. How much will she receive with
each dose?
What will be an ideal response?
BSA m =
Ht Cm Wt kg
3600
( ) 2 ( )× ( )
Using the body surface area (BSA) formula, D.W.'s BSA in square meters is 1.69 m2.
100 mg× 1.69 m2 = 169 mg/m2/day of Cytoxan.
169/2 = 84.5 mg with each dose.
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