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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 ["240"]

Explanation

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

- Calculate the amount of water needed to dilute the formula to 75% by subtracting the volume of the prescribed solution from the volume of the full strength formula

- Subtract the amount of water from the volume of the can to get the amount of enteral nutrition formula

- Round the result to the nearest whole number

Using these steps, we get:

- (water in mL) = (320) - (240) = 80 mL

- (enteral nutrition formula in mL) = (240) - (80) = 160 mL

- (rounded enteral nutrition formula in mL) = 160 mL

Therefore, the nurse should use 160 mL of enteral nutrition formula from the can to prepare the solution.

Correct Answer is ["180"]

Explanation

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

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

- Calculate the dosage of dobutamine in mg/hour by multiplying the weight in kg by the rate in mcg/kg/min and by 60

- Divide the dosage of dobutamine in mg/hour by the concentration of dobutamine in the solution in mg/mL

- Round the result to the nearest whole number

Using these steps, we get:

- (weight in kg) = (165) / (2.2) = 75 kg

- (dose in mg/hour) = (2) x (75) x (60) = 9000 mcg/hour

- (dose in mg/hour) = (9000 x 10^-3) = 9 mg/hour

- (volume in mL/hour) = (9) / (50 / 1000) = 180 mL/hour

Therefore, the nurse should set the infusion pump to deliver 180 mL/hour of dobutamine hydrochloride in D5W.

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Naxlex Comprehensive Predictor Exams

Correct Answer is ["240"]

Explanation

Dobutamine hydrochloride 2 mcg/kg/min is prescribed for a client weighing 165 pounds. The solution is mixed with 50 mg of dobutamine in 1,000 mL of D5W. The nurse should set the infusion pump to deliver how many mL/hour? (Enter numeric value only.)

Correct Answer is ["180"]

Explanation

An adult client receives a prescription for diphenhydramine 15 mL by mouth every 12 hours PRN for pruritus. The bottle is labeled, "diphenhydramine 12.5 mg/5 mL." What is the total daily dose in mg that the client receives? (Enter numerical value only.)

The nurse is preparing to administer methylprednisolone 40 mg IV. The medication vial is labeled "125 mg per 2 mL." How many mL of medication should the nurse administer? (Enter numeric value only. If rounding is required, round to the nearest hundredth.)

Filgrastim 5 mcg/kg/day subcutaneous is prescribed for a child with cancer who weighs 88 pounds. The medication is labeled 300 mcg/mL. How many mL should the nurse administer daily to this child? (Enter the numerical value only. If rounding required, round to the nearest tenth.)

A patient with deep vein thrombosis (DVT) is receiving a continuous infusion of Heparin Sodium 20,000 Units in 5% Dextrose Injection 500 mL at the rate of 25 mL/hour. How many units of heparin should the client receive in 12 hours? (Enter numeric value only.)

A child with a seizure disorder receives a prescription for phenytoin 20 mg by mouth every 8 hours. The suspension is available in 125 mg/5 mL. How many mL should the nurse administer? (Enter the numerical value only. If rounding is required, round to the nearest tenth.)