The adult dose of a medication is 10 mg/kg of body weight. What dose, in g, should be given to a patient weighing 220 lb?

Rationale

The appropriate dose for a patient weighing 220 lb is 1 g.

To calculate the dosage based on the patient's weight in kilograms, first convert 220 lb to kg (220 lb ÷ 2.2 = 100 kg). Then, apply the dosage of 10 mg/kg, resulting in a total dose of 1000 mg, which is equivalent to 1 g.

A (1) CORRECT

This choice accurately reflects the calculated dose. The patient weighing 220 lb converts to 100 kg, and with a dosage of 10 mg/kg, the total required dose is 1000 mg, which equals 1 g.

B (10) YOUR ANSWER

This choice suggests a dose of 10 g, which is incorrect as it does not consider the weight of the patient accurately. The calculation based on the weight indicates a total of only 1 g, making this option significantly higher than necessary.

C (100) YOUR ANSWER

This choice implies a dosage of 100 g, which is also incorrect. The calculation shows that the total dose should be 1 g, and suggesting 100 g vastly exceeds the required amount, disregarding the correct conversion and dosage calculation.

D (1000) YOUR ANSWER

Although this choice represents the dose in mg (1000 mg), it does not answer the question appropriately as it asks for the dosage in grams. The correct conversion from mg to g indicates that the dose should be presented as 1 g, making this option technically incorrect in the context of the question.

Conclusion

The correct dosage for a patient weighing 220 lb is 1 g, derived from the calculation based on their weight and the medication's prescribed dosage. Other options either miscalculate the required amount or fail to convert the units appropriately, highlighting the importance of accurate conversions and calculations in medication dosing.

The adult dose of a medication is 10 mg/kg of body weight. What dose, in g, should be given to a patient weighing 220 lb?

The appropriate dose for a patient weighing 220 lb is 1 g.

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