A nurse is preparing to administer cefazolin 500 mg IM to a client. Available is cefazolin powder 500 mg vial. After reconstitution, the concentration available is cefazolin 330 mg/mL. 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.)

Answer and Explanation

The Correct Answer is ["1.5"]

The nurse should administer 1.5 mL of cefazolin solution.

Here's the calculation:

Desired dose: 500 mg

Concentration after reconstitution: 330 mg/mL

We can find the volume to administer by dividing the desired dose by the concentration and rounding to the nearest tenth:

Volume to administer (rounded to nearest tenth) = Dose / Concentration

= 500 mg / 330 mg/mL

= 1.5 mL (rounded to nearest tenth)

Therefore, the nurse should administer 1.5 mL of the reconstituted cefazolin solution.

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Free Nursing Study Resources

Correct Answer is C

Explanation

A) The client can return to bed after taking the medication, but before eating:
Returning to bed after taking alendronate is not recommended. The client needs to remain upright for at least 30 minutes after taking the medication to prevent esophageal irritation or damage.

B) Take the medication at 1800, 30 min after the evening meal:
Alendronate should be taken in the morning upon waking and at least 30 minutes before any food, fluids, or other medications. Taking it in the evening or after a meal would reduce its effectiveness.

C) Choose the same day of each week to take this medication:
The prescription specifies that alendronate should be taken once per week. Choosing the same day each week ensures consistency and helps maintain the correct dosing schedule, which is crucial for the medication's effectiveness in treating osteoporosis.

D) Over-the-counter oral preparations can be taken with this medication:
Alendronate should be taken alone, and other medications, including over-the-counter preparations, should not be taken simultaneously. This is to avoid any potential interactions that could affect the absorption and efficacy of alendronate.

Correct Answer is ["1"]

Explanation

Let's break down the problem step-by-step:

Step 1: Convert the weight from pounds to kilograms.

We know that 1 kg is approximately 2.205 pounds.
So, to convert 220 pounds to kilograms, we divide by 2.205:
```
220 lb ÷ 2.205 lb/kg ≈ 100 kg
```

Step 2: Calculate the total dose of enoxaparin in mg.

We need to administer 1 mg of enoxaparin per kilogram of body weight.
The client weighs 100 kg, so the total dose is:
```
1 mg/kg × 100 kg = 100 mg
```

Step 3: Determine the volume to administer.

We have enoxaparin 30 mg/0.3 mL available.
To find the volume needed for 100 mg, we can set up a proportion:
```
(30 mg / 0.3 mL) = (100 mg / x mL)
```
Cross-multiplying, we get:
```
30x = 30
```
Solving for x:
```
x = 30 / 30 = 1 mL
```

Therefore, the nurse should administer 1 mL of enoxaparin.

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Naxlex Comprehensive Predictor Exams

Correct Answer is C

Explanation

A nurse is preparing to administer enoxaparin 1 mg/kg subcutaneously to a client who weighs 220 lb. Available is enoxaparin 30 mg/0.3 mL. How many mL should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

Correct Answer is ["1"]

Explanation

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