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The healthcare provider prescribes cefazolin 800 mg IM every six hours. The available vial is labeled, "Cefazolin 1 gram," and the instructions for reconstitution state, "For IM use add 2.5 mL sterile water for injection to provide a total volume of 3.0 mL." After reconstitution, the solution contains how many mg/mL? (Enter numeric value only. If rounding is required, round to the nearest whole number.)

Answer and Explanation

The Correct Answer is ["333"]

To find the answer, we can use the following formula:

(mg/mL) = (mg of cefazolin) / (mL of solution)

Substituting the given values, we get:

(mg/mL) = (1000) / (3)

Simplifying, we get:

(mg/mL) = 333.333

(rounded mg/mL) = 333

Therefore, after reconstitution, the solution contains 333 mg/mL of cefazolin.

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Correct Answer is ["20"]

Explanation

The correct answer is 20 mg. To find the answer, we can use the following steps:

- Convert the client's weight from pounds to kilograms by dividing by 2.2

- Multiply the weight in kilograms by the dosage in mg/kg

- Round the result to the nearest whole number

Using these steps, we get:

- (weight in kg) = (178) / (2.2) = 80.909 kg

- (dose in mg) = (0.25) x (80.909) = 20.227 mg

- (rounded dose in mg) = 20 mg

Therefore, the nurse should administer 20 mg of IV diltiazem to the client.

Correct Answer is ["0.5"]

Explanation

To find the answer, we can use the following steps:

- Calculate the dose of dalteparin in units by multiplying the weight in kg by the dosage in units/kg

- Divide the dose in units by the concentration in units/mL

- Round the result to the nearest tenth

Using these steps, we get:

- (dose in units) = (60) x (200) = 12,000 units

- (volume in mL) = (12,000) / (25,000) = 0.48 mL

- (rounded volume in mL) = 0.5 mL

Therefore, the nurse should administer 0.5 mL of dalteparin from the vial to the client.

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Naxlex Comprehensive Predictor Exams

The healthcare provider prescribes an IV bolus of diltiazem 0.25 mg/kg for a client with atrial fibrillation. The client weighs 178 pounds. How many mg should the nurse administer? (Enter numeric value only. If rounding is required, round to the nearest whole number.)

Correct Answer is ["20"]

Explanation

A client who weighs 60 kg receives a prescription for dalteparin 200 units/kg subcutaneously once a day for a month. The medication is available in 25,000 units/mL vial. How many mL should the nurse administer? (Enter numerical value. If rounding is required, round to the nearest tenth.)

Correct Answer is ["0.5"]

Explanation

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