A patient receives a prescription for warfarin 2 mg IM daily. The pharmacy delivers a vial labeled, warfarin 5 mg/single-use vial. The instructions read, reconstitute with 2.7 mL of sterile water for injection to yield 2 mg/mL. How many mL should the nurse administer?
(Enter the numerical value only.)

Answer and Explanation

The Correct Answer is ["1"]

First, we need to find out how many mg of warfarin are in one vial. Since the vial is labeled 5 mg/single-use, we can assume that it contains 5 mg of warfarin.

Next, we need to find out how many mL of solution are in one vial. Since the instructions say to reconstitute with 2.7 mL of sterile water for injection to yield 2 mg/mL, we can use the following formula:

Amount of solution= amount of water + amount of warfarin

Substituting the given values, we get:

Amount of solution = 2.7 + 5 =7.7 mL

Now, we need to find out how many mL of solution contain 2 mg of warfarin, which is the prescribed dose for the patient. We can use the following formula:

mL of solution = mg of warfarin/ concentration of warfarin

Substituting the given values, we get:

mL of solution = 2/2 = 1 mL

Therefore, the nurse should administer 1 mL of solution to the patient.

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Correct Answer is ["700"]

Explanation

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

- Calculate the total volume of normal saline in mL by multiplying the weight in kg by the dosage in mL/kg

- Divide the total volume of normal saline in mL by the number of hours to get the rate in mL/hour

- Round the result to the nearest whole number

Using these steps, we get:

- (total volume in mL) = (30) x (70) = 2100 mL

- (rate in mL/hour) = (2100) / (3) = 700 mL/hour

- (rounded rate in mL/hour) = 700 mL/hour

Therefore, the nurse should program the infusion pump to deliver 700 mL/hour of normal saline.

Correct Answer is ["15"]

Explanation

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

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

- Calculate the total daily dose of amoxicillin in mg by multiplying the weight in kg by the dosage in mg/kg/day

- Divide the total daily dose of amoxicillin in mg by the number of doses per day to get the dose per administration

- Divide the dose per administration in mg by the concentration of amoxicillin in mg/mL

- Round the result to the nearest whole number

Using these steps, we get:

- (weight in kg) = (66) / (2.2) = 30 kg

- (total daily dose in mg) = (80) x (30) = 2400 mg

- (dose per administration in mg) = (2400) / (2) = 1200 mg

- (volume per administration in mL) = (1200) / (400 / 5) = 15 mL

- (rounded volume per administration in mL) = 15 mL

Therefore, the nurse should administer 15 mL of amoxicillin oral suspension with each dose.

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Naxlex Comprehensive Predictor Exams

The healthcare provider prescribes a hydration infusion of normal saline to run over 3 hours at 30 mL/kg for a client who is dehydrated and weighs 70 kg. The nurse should program the infusion pump to deliver how many mL/hour? (Enter numeric value only.)

Correct Answer is ["700"]

Explanation

A child who weighs 66 pounds receives a prescription for amoxicillin 80 mg/kg/day by mouth in divided doses every 12 hours. The bottle is labeled, "Amoxicillin for Oral Suspension, USP 400 mg per 5 mL." How many mL should the nurse administer with each dose? (Enter numerical value only.)

Correct Answer is ["15"]

Explanation

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