A dose of aspirin of 5.0 mg per kilogram of body weight has been prescribed to reduce the fever of an infant weighing 8.5 pounds. The number of milligrams of aspirin that should be administered is
• 1.6 mg
O 5.0 mg
• 53 mg
• 19 mg
• 0.59 mg
To determine the number of milligrams of aspirin to administer, we need to convert the weight of the infant from pounds to kilograms.
1 pound is approximately 0.4536 kilograms, so the weight of the infant in kilograms is:
8.5 pounds * 0.4536 kilograms/pound = 3.8566 kilograms
Now, we can calculate the dosage of aspirin based on the weight:
Dosage = 5.0 mg/kg * 3.8566 kilograms = 19.283 mg
Therefore, the number of milligrams of aspirin that should be administered is approximately 19 mg.
To determine the number of milligrams of aspirin that should be administered, we need to convert the weight of the infant from pounds to kilograms.
1 pound is equal to 0.453592 kg. Therefore, the infant's weight in kilograms is:
8.5 pounds x 0.453592 kg/pound ≈ 3.8555 kg
Now that we have the weight in kilograms, we can calculate the dosage of aspirin:
Dosage = 5.0 mg/kg x 3.8555 kg ≈ 19.278 mg
Rounding to the nearest whole number, the number of milligrams of aspirin that should be administered is: 19 mg.
Therefore, the correct answer is option • 19 mg.
To find the number of milligrams of aspirin that should be administered, we need to convert the weight of the infant from pounds to kilograms.
1 pound is approximately 0.4536 kilograms. Therefore, the weight of the infant in kilograms can be calculated as 8.5 pounds × 0.4536 kg/pound = 3.8556 kg (rounded to four decimal places).
Next, we multiply the weight of the infant in kilograms by the prescribed dose of aspirin per kilogram of body weight.
3.8556 kg × 5.0 mg/kg = 19.278 mg (rounded to three decimal places).
The closest answer choice to 19.278 mg is 19 mg. Therefore, the number of milligrams of aspirin that should be administered is 19 mg.