A child is prescribed 1.5 mg/m2 of vincristine sulfate (Vincasar PFS). The child is 48 inches tall and weighs 77 lbs. The medication available is 1 mg/1 mL. How many mL of the medication should the child receive?
1. 1.235 mL
2. 1.635 mL
3. 1.745 mL
4. 1.925 mL
2
Rationale 1: First determine the child's body surface area by using the equation, BSA = √77 lbs. x 48 in/3131 = √3696/3131 = √1.18435 = 1.09 m2. mL/dose = 1 mL/1 mg x 1.5 mg/m2 x 1.09 m2/dose. Multiply the numerators and then divide by the denominators. The client will receive 1.635 mL of medication.
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