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Penicillin G procaine 240,000 units Intramuscularly (IM) is prescribed for a 4-year-old child who has a streptococcal respiratory infection. The medication vial is labeled, *1,200,000 units/2 mL" How many mL should the nurse administer? (Enter numeric value only. If rounding is required, round to the nearest tenth.)
Answer and Explanation

The Correct Answer is ["0.4"]

Here's the breakdown of the calculation:

 

The medication vial is labeled 1,200,000 units/2 mL, which means there are 1,200,000 units of penicillin G per every 2 mL of the medication.

We need to find out how many mL are needed to administer the prescribed dose of 240,000 units.

To do this, we can divide the desired dose (240,000 units) by the concentration of the medication (units per mL).

Calculation:

Dose per mL = 1,200,000 units / 2 mL = 600,000 units/mL

Desired dose / Dose per mL = 240,000 units / 600,000 units/mL = 0.4 mL

Rounding to the nearest tenth, the nurse should administer 0.4 mL of Penicillin G procaine.


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Related Questions

Correct Answer is ["21"]

Explanation

Here's how to calculate the infusion rate for lactated Ringer's solution:

We know:

Total volume of lactated Ringer's solution: 1 liter (1000 mL) (given)

Infusion duration: 8 hours (given)

IV administration set drip rate: 10 gtt/mL (given)

We need to find:

Infusion rate in gtt/min

Steps:

Calculate the volume that needs to be delivered per hour:

Volume per hour (mL) = Total volume (mL) / Infusion time (hours)

Volume per hour (mL) = 1000 mL / 8 hours

Volume per hour (mL) = 125 mL/hour

Calculate the infusion rate in gtt/min:

Infusion rate (gtt/min) = Volume per hour (mL) x Drip rate (gtt/mL) / 60 minutes/hour (convert hour to minutes)

Infusion rate (gtt/min) = 125 mL/hour x 10 gtt/mL / 60 minutes/hour

Infusion rate (gtt/min) = 20.83 gtt/min (round to nearest whole number)

Therefore, the nurse should regulate the infusion at 21 gtt/min.

Correct Answer is ["18"]

Explanation

Here's how to calculate the volume (mL/hour) the nurse should program the infusion pump to deliver heparin:

1. We know:

Heparin dose rate: 1,400 units/hour (given by healthcare provider)

Heparin concentration in the IV bag: 20,000 units per 250 mL (given on the label)

2. We need to find:

Volume delivery rate (mL/hour)

3. Calculation:

To find the volume rate, we can divide the heparin dose rate (units/hour) by the heparin concentration (units/mL)

Volume rate (mL/hour) = Heparin dose rate (units/hour) / Heparin concentration (units/mL)

Plug in the values:

Volume rate (mL/hour) = 1,400 units/hour / (20,000 units / 250 mL)

Important note: We can rearrange the fraction with the concentration term because we are dividing by units/mL, which is equivalent to multiplying by mL/units. So, effectively, we are multiplying by the reciprocal of the concentration.

Volume rate (mL/hour) = 1,400 units/hour x (250 mL / 20,000 units)

Volume rate (mL/hour) = 17.5 mL/hour (round to nearest whole number)

Therefore, the nurse should program the infusion pump to deliver 18 mL/hour.

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