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Chlorpromazine (Thorazine) 175 mg IM is ordered. Available: 25 mg/mL. How many mLs will you administer?

A.

0.5 mL

B.

7 ml

C.

2 ml

D.

17 ml

Answer and Explanation

The Correct Answer is B

To calculate the dosage, we need to use the formula:

Dosage (mL) = Ordered dose (mg) / Available dose (mg/mL)

Plugging in the given values, we get:

Dosage (mL) = 175 mg / 25 mg/mL

Simplifying, we get:

Dosage (mL) = 7 mL

Therefore, the dosage is 7 mL.


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Related Questions

Correct Answer is D

Explanation

To calculate the dosage using the ratio and proportion method, we can use the following formula: Order/Available = Dose/1 capsule

Where Order is 1.0 g p.o. BID and Available is Amoxil capsules labeled 250 mg per capsule. Substituting the values in the formula:

1.0 g p.o. BID / 250 mg per capsule = Dose / 1 capsule

Dose = (1.0 g p.o. BID x 1000 mg/g) / (250 mg per capsule x 2) Dose = 4 capsules

Explanation: The order is for 1.0 g p.o. BID which means that the patient needs to receive a total of 2 grams of Amoxil per day. Since each capsule contains 250 mg of Amoxil, we need to calculate how many capsules are required to achieve a total of 2 grams per day. Using the ratio and proportion method, we can calculate that 4 capsules are required to achieve a total of 2 grams per day.

Correct Answer is A

Explanation

Step 1: Identify the total volume to be infused.

  • Total volume = 2,000 mL

Step 2: Identify the total time for infusion.

  • Total time = 24 hours

Step 3: Calculate the flow rate in mL/hr.

  • Flow rate = Total volume ÷ Total time
  • Flow rate = 2,000 mL ÷ 24 hours

Step 4: Perform the division.

  • 2,000 ÷ 24 = 83.3333…

Step 5: Round to the nearest whole number since the equipment is programmable in whole mL/hr.

  • Rounded flow rate = 83 mL/hr

So, the flow rate is 83 mL/hr.

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