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A nurse has to administer 0.05 mcg/kg of a medication to an infant who weighs 7 kg.
Calculate the dose that the nurse should administer to the infant.

A.

0.35 mcg

B.

350 mcg

C.

35 mcg

D.

3.5 mcg

Answer and Explanation

The Correct Answer is A

The nurse should administer 0.35 mcg of medication to the infant.
 
This answer is correct because it is based on a simple multiplication calculation. The nurse should multiply the prescribed dose per kilogram by the infant's weight in kilograms to get the total dose in micrograms, as follows:

0.05 mcg/kg x 7 kg = 0.35 mcg

Therefore, the nurse should administer 0.35 mcg of medication to the infant.
 


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Related Questions

Correct Answer is C

Explanation

To find the hours to finish the infusion, you need to calculate the following:

- The volume of saline solution in milliliters
- The time in hours using the formula: Time (h) = Total volume (mL) / Infusion rate (mL/h)


First, convert the volume of saline solution from liters to milliliters by multiplying by 1000:

1.5 L x 1000 = 1500 mL


Next, use the formula for time to find how many hours it will take to infuse the saline solution at the current rate:


Time (h) = Total volume (mL) / Infusion rate (mL/h)


Since the total volume is 1500 mL and the infusion rate is 75 mL/h, plug in these values into the formula:


Time (h) = 1500 mL / 75 mL/h


Simplify and solve for the time:


Time (h) = 20 h


Therefore, it will take **20 hours** to finish the infusion at the current rate.

Correct Answer is A

Explanation

To find the total amount of heparin, you need to calculate the following:


- The concentration of heparin in units per milliliter
- The volume of heparin infused from 9:00 am to 11:00 am and from 11:00 am to 2:00 pm
- The amount of heparin in units from each time period and the total amount


First, divide the amount of heparin by the volume of D5W to get the concentration in units per milliliter:


25,000 units / 250 mL = 100 units/mL


Next, multiply the infusion rate by the duration to get the volume infused in each time period:


From 9:00 am to 11:00 am (2 hours), the infusion rate is 12 mL/hr:


12 mL/hr x 2 hours = 24 mL


From 11:00 am to 2:00 pm (3 hours), the infusion rate is 10 mL/hr:

10 mL/hr x 3 hours = 30 mL

Then, multiply the volume infused by the concentration to get the amount of heparin in units in each time period:

From 9:00 am to 11:00 am, the volume infused is 24 mL:

24 mL x 100 units/mL = 2400 units

From 11:00 am to 2:00 pm, the volume infused is 30 mL:

30 mL x 100 units/mL = 3000 units

Finally, add the amounts of heparin from each time period to get the total amount:

2400 units + 3000 units = 5400 units

Therefore, the patient received **5400 units** of heparin from 9:00 am to 2:00 pm.

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