The healthcare provider prescribes penicillin 200,000 units intramuscularly for a patient with pneumonia.

The available vial is labeled “Penicillin 500,000 units/mL”. How much penicillin should be administered to the patient? (Enter numerical value only.

If rounding is required, round to the nearest tenth.)

Answer and Explanation

The Correct Answer is ["0.4"]

Step 1 is to determine the amount of penicillin in each milliliter (mL) of the available solution. The vial is labeled as “Penicillin 500,000 units/mL”.

Step 2 is to divide the prescribed dose by the concentration per mL. So, the calculation is 200,000 units ÷ 500,000 units/mL. The result is 0.4 mL.

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Correct Answer is A

Explanation

Choice A rationale
A lumbar puncture is a key diagnostic procedure for suspected bacterial meningitis. It allows for the collection of cerebrospinal fluid, which can be analyzed for signs of bacterial infection.
Choice B rationale
Skull radiography is not typically used to diagnose bacterial meningitis. While it can help identify abnormalities in the structure of the skull or brain, it cannot detect the presence of bacteria.
Choice C rationale
While an MRI can provide detailed images of the brain and surrounding tissues, it is not the primary tool for diagnosing bacterial meningitis. It may be used in conjunction with other tests, but a lumbar puncture is more definitive.
Choice D rationale
A CT scan can be used to detect abnormalities in the brain, such as swelling or inflammation, which could be indicative of meningitis. However, it cannot definitively diagnose bacterial meningitis.

Correct Answer is ["42"]

Explanation

Step 1: Convert the volume from liters to milliliters. 1 liter = 1000 mL. Step 2: Convert the time from hours to minutes. 4 hours = 240 minutes.

Step 3: Calculate the rate in mL per minute. Rate = Volume ÷ Time = 1000 mL ÷ 240 min = 4.17 mL/min.

Step 4: Calculate the drops per minute. Drops per minute = Rate × Drop factor = 4.17 mL/min

× 10 gtt/mL = 41.7 gtt/min.

Step 5: Round off the result to the nearest whole number. 41.7 gtt/min rounds off to 42 gtt/min.

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Naxlex Comprehensive Predictor Exams

The nurse is caring for a client admitted to the hospital with a tentative diagnosis of bacterial meningitis. Which diagnostic procedure should the nurse prepare the client for the healthcare provider?

Correct Answer is A

Explanation

Correct Answer is ["42"]

Explanation

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