The nurse is going to administer a dose of Vitamin K (Aquamephyton) 0.5mg IM to a newborn. Available: Vitamin K 1 mg/1ml. How many mLs would the nurse administer? (Please answer numerically only)

Given:

Desired dose: Vitamin K 0.5 mg IM

Available concentration: Vitamin K 1 mg/1 mL

To find:

Volume to administer (in mL)

Step 1: Set up the proportion

We can use the following proportion to solve the problem:

(Desired dose) / (Available concentration) = Volume to administer

Step 2: Substitute the values

Plugging in the given values, we get:

(0.5 mg) / (1 mg/1 mL) = Volume to administer

Step 3: Simplify

To simplify, we can invert the denominator and multiply:

(0.5 mg) x (1 mL / 1 mg) = Volume to administer

The "mg" units cancel out, leaving us with:

(0.5 x 1 mL) / 1 = Volume to administer

Step 4: Calculate

Performing the multiplication and division, we get:

0.5 mL / 1 = Volume to administer

0.5 mLVolume to administer

A) 2 to 3 oz (60 to 90 mL):
To determine the appropriate amount of formula for this infant, first calculate the total fluid requirements for the day. The infant weighs 6 lb (2722 g), and newborns typically need 73 mL of fluid per pound of body weight per day.
6 lb × 73 mL = 438 mL of fluid required daily.
Since the infant is fed every 4 hours, this equates to approximately 6 feedings in a 24-hour period.
438 mL ÷ 6 feedings = 73 mL per feeding.
Converting this to ounces (since 1 oz = 30 mL), the infant would need about 2.5 oz per feeding. Therefore, 2 to 3 oz (60 to 90 mL) per feeding is appropriate to meet the infant's daily fluid needs.

B) 1 to 1.5 oz (30 to 45 mL):
This amount is insufficient for the infant’s daily fluid needs. At 1 to 1.5 oz per feeding, the total intake for the day would be only 180 to 270 mL, which is well below the required 438 mL. This could lead to dehydration and inadequate nourishment.

C) 4 to 5 oz (120 to 150 mL):
This amount is excessive for a 3-day-old infant. Newborns typically consume much smaller amounts at each feeding due to their smaller stomach capacity. Overfeeding could lead to discomfort and potential digestive issues.

D) 3 to 4 oz (90 to 120 mL):
While this range is closer to the required amount, it is still slightly too much for a 3-day-old infant. At this age, the recommended amount is closer to 2.5 oz per feeding, so 3 to 4 oz may be excessive and could contribute to overfeeding, which might be uncomfortable for the infant.