The physician ordered a drug with a dose of 500 mcg / kg of body weight. How many milligrams should be administered to a child who weighs 58 lbs?
11.4
12.6
13.1
15.3
13.1
Rationale: 13.1 mg should be administered to a child weighing 58 lbs. Convert weight in pounds to kilograms (45 lbs x 1 kg / 2.2 lbs). Multiply the weight in kilograms by 500 mcg/kg to obtain the correct dose in micrograms. Convert micrograms to milligrams by multiplying micrograms by 1 mg/1000 mcg.
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