Final answer:
To calculate the Narcan dose for an infant weighing 8 pounds 4 ounces, the baby's weight is first converted to kilograms, resulting in 3.74 kg, and then multiplied by the dosage of 0.1 mg/kg, which is then rounded to the nearest hundredth, concluding that the infant should receive 0.38 mg of Narcan.
Step-by-step explanation:
The question involves converting the baby's weight from pounds to kilograms and then calculating the correct dosage of Narcan (naloxone) based on the baby's weight. To find out how much Narcan a newborn infant weighing 8 pounds 4 ounces should receive, we first convert the weight into kilograms. Since there are 16 ounces in a pound, 8 pounds 4 ounces is equivalent to 8.25 pounds (8 pounds + 4 ounces / 16 ounces per pound = 8.25 pounds). We then convert 8.25 pounds to kilograms by multiplying by the conversion factor of 0.453592 kilograms per pound, resulting in approximately 3.74 kilograms. Using the dosage of 0.1 mg/kg, we multiply 3.74 kg by 0.1 mg/kg to find the dosage in milligrams: 0.374 mg. This value is then rounded to the nearest hundredth, which gives us 0.38 mg. Therefore, the infant should receive 0.38 mg of Narcan.