A nurse is preparing to administer cefazolin 500 mg IM every 8 hr. Available is cefazolin 1 g vial. The package insert instructs adding sterile water 2.5 mL to yield cefazolin 330 mg/mL. How many mL should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

Answer and Explanation

The Correct Answer is ["1.5"]

First, we need to calculate the amount of cefazolin 500 mg in milligrams per milliliter (mg/mL) using the information provided:

Cefazolin concentration after reconstitution = 330 mg/mL Amount of cefazolin needed per dose = 500 mg

Now we can calculate the volume (mL) required for the dose:

Volume (mL) = Amount of cefazolin needed per dose / Cefazolin concentration after reconstitution

Volume (mL) = 500 mg / 330 mg/mL ≈ 1.52 mL

Rounded to the nearest tenth, the nurse should administer approximately 1.5 mL of cefazolin per dose.

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Correct Answer is ["2.4"]

Explanation

To calculate the amount of calcitonin the nurse should administer, follow these steps:

Calculate the client's weight in kilograms: Weight in kilograms = Weight in pounds / 2.2 Weight in kilograms = 130 lb / 2.2 = 59.09 kg (rounded to two decimal places)

Calculate the total units of calcitonin needed: Total units = Weight in kilograms × Dose per kilogram Total units = 59.09 kg × 8 units/kg = 472.72 units

Determine the volume (ml) to administer using the concentration of the available calcitonin: Volume (ml) = Total units needed / Concentration (units/ml) Volume (ml) = 472.72 units / 200 units/ml = 2.36 ml

Rounded to the nearest tenth of a milliliter, the nurse should administer 2.4 ml of calcitonin.

Correct Answer is ["25"]

Explanation

To calculate the flow rate in drops per minute (gtt/min) for the IV infusion of clindamycin, you can use the following formula:

Flow rate (gtt/min) = (Volume to be infused (mL) * Drop factor) / Time (minutes)

First, you need to determine the volume to be infused. In this case, it's 100 mL. The drop factor is given as 15 gtt/mL, and the time is 60 minutes (1 hour).

Now, plug these values into the formula:

Flow rate (gtt/min) = (100 mL * 15 gtt/mL) / 60 minutes

Flow rate (gtt/min) = (1500 gtt) / 60 minutes

Flow rate (gtt/min) = 25 gtt/min

So, the nurse should set the flow rate to deliver 25 gtt/min for the IV infusion of clindamycin.

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Naxlex Comprehensive Predictor Exams

A nurse is preparing to administer calcitonin 8 units/kg IM to a client who weighs 130 lb. Available is calcitonin 200 units/ml. for injection. How many ml. should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

Correct Answer is ["2.4"]

Explanation

Correct Answer is ["25"]

Explanation

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