A nurse is preparing to administer a hepatitis B immunization to an infant who is 9 months old.
Which site should the nurse administer the immunization?

Step 1: The nurse needs to administer 1mg of vitamin K. The available vitamin K injection is 1 mg per 0.5 mL.

Step 2: To find out how many mL the nurse should administer, we divide the required dose by the concentration of the injection. So, 1 mg ÷ (1 mg/0.5 mL).

Step 3: This simplifies to 1 mg × (0.5 mL/1 mg).

Step 4: The mg units cancel out, leaving us with 0.5 mL. So, the nurse should administer 0.5 mL of the vitamin K injection per dose.

Choice A rationale

The American Academy of Pediatrics and the Dietary Guidelines for Americans recommend that children be introduced to foods other than breast milk or infant formula when they are about 6 months old. The first foods to be introduced should be single-ingredient foods that contain no sugar or salt. Among the first foods to be introduced are infant cereals. Iron-fortified cereals are particularly important because iron is a crucial nutrient in the second half of a baby’s first year.

Choice B rationale

While strained fruits are a common food to introduce early on, they are typically not the first food to be introduced. The first food is usually an iron-fortified cereal due to the importance of iron in a baby’s diet.

Choice C rationale

Pureed meats are also a good source of iron and can be introduced early on. However, they are not typically the first food to be introduced.

Choice D rationale

Cooked egg whites are not typically one of the first foods introduced to infants. There is also a risk of allergic reactions with egg whites, so they should be introduced with caution and not as the first food.