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A physician orders Platinol (cisplatin) 20 mg/m²/day x 5 days IV for a patient weighing 94.5 kg and having a height of 185 cm.

Using the body surface area (BSA) formula, what would this patient's dose be in milligrams?

A.

22 mg

B.

486 mg

C.

44 mg

D.

47 mg

Answer and Explanation

The Correct Answer is C

We need to calculate the patient's BSA using one of the available formulas. The most widely used formula is the Du Bois formula, which is:.

BSA = 0.007184 × W^0.425 × H^0.725.

where W is weight in kg and H is height in cm.. Plugging in the patient's weight and height, we get:. BSA = 0.007184 × 94.5^0.425 × 185^0.725

BSA = 2.15 m².

Now, we can use the physician's order to find the daily dose and the total dose of Platinol for this patient. The daily dose is:.

Daily dose = 20 mg/m²/day × BSA Daily dose = 20 mg/m²/day × 2.15 m² Daily dose = 43 mg/day.

The total dose for 5 days is:.

Total dose = Daily dose × Number of days Total dose = 43 mg/day × 5 days

Total dose = 215 mg.

Therefore, the patient's dose of Platinol would be 215 mg in total, or 43 mg per day for 5 days.


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Related Questions

Correct Answer is B

Explanation

We can use the formula for calculating infusion time:. Infusion time = Total volume / Infusion rate.

First, we need to convert the volume of the fluid from liters to milliliters:.

0.75 L = 750 mL.

Next, we can plug in the values we have:. Infusion time = 750 mL / 120 mL/hr.

Infusion time = 6.25 hours.

Since the infusion was started at 9:00 a.m., we can add 6.25 hours to determine when the infusion will be completed:.

9:00 a.m. + 6.25 hours = 3:15 p.m..

Therefore, the infusion will be completed at 3:15 p.m.

Correct Answer is B

Explanation

The correct answer is choice B. 2 bottles. To find the number of bottles required, use the formula: (dose x duration) / (bottle size x tablet strength). In this case, (600 mg/day x 7 days) / (7 tablets/bottle x 300 mg/tablet) = 2 bottles.

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