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Test Bank for Clinical Calculations 9th Edition Kee Marshall
NURS
Chapter 07: Methods of Calculation for Individualized Drug Dosing
Kee: Clinical Calculations: With Applications to General and Specialty Areas, 9th
Edition
OTHER
Body Surface Area by Square Root
1. Order: cyclophosphamide 500 mg/m
2
in 500 mL of normal saline solution (NSS) over 90
minutes
Patient height and weight: 5 ft 10 in, 142 lb
Drug available: cyclophosphamide 100 mg dilute with 5 mL of sterile water; yields 20 mg/mL
a. What is the patient’s body surface area (BSA) (m
2
)?
b. What is the total dose?
c. How many milliliters should you prepare?
ANS:
a.
b. 500 mg/m
2
1.78 m
2
= 890 mg
c. FE: 890 mg/100 mg 5 mL = 44.5 mL
OR
2. Order: cisplatin 50 mg/m
2
in 500 mL of NSS intravenously over 90 minutes
Patient height and weight: 5 ft 6 in, 160 lb
Drug available: cisplatin 100 mg/100 mL
a. What is the patient’s BSA (m
2
)?
b. What is the total dose?
c. How many milliliters should you prepare?
ANS:
a.
b. 50 mg 1.84 m
2
= 92 mg
c. FE: 92 mg/100 mg 100 mL = 92 mL
OR
3. For the following questions, use the square root method and/or nomogram. Note discrepancies
between methods.
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