A nurse is reviewing transmission precautions with an assistive personnel (AP) who is providing care for a client who has a Clostridium difficile infection. Which of the following statements by the AP indicates an understanding of the teaching?

To calculate how many milliliters (mL) of diazepam oral solution should be administered, you can use the following formula:

Dose (mL) = Desired dose (mg) / Concentration (mg/mL)

In this case, the desired dose is 2 mg, and the concentration of the diazepam oral solution is 5 mg/1 mL.

Dose (mL) = 2 mg / 5 mg/mL = 0.4 mL

So, the nurse should administer 0.4 mL of diazepam oral solution with each dose. The correct answer is:

A) 0.4 mL.

Choice A rationale:

Using a 5-mL syringe to flush the catheter is not the best choice. Central venous access devices typically require a larger syringe for flushing to prevent excessive pressure and potential damage to the catheter. A smaller syringe like the 5-mL syringe can create higher pressure, which could cause complications.

Choice B rationale:

Changing the site dressing and stabilization device every 24 hours is not the recommended practice. The dressing and stabilization device should be changed according to facility policy and as needed, but a rigid 24-hour schedule is not necessary and might increase the risk of infection due to unnecessary exposure.

Choice C rationale:

Expecting blood to appear in the catheter lumen after flushing is incorrect. Blood in the catheter lumen after flushing could indicate complications such as a dislodged catheter or other issues requiring immediate attention. The catheter should ideally remain patent without the presence of blood.

Choice D rationale:

This is the correct choice. Using chlorhexidine solution to clean the catheter is an evidence-based practice to prevent infection at the insertion site. Chlorhexidine has broad-spectrum antimicrobial properties and helps reduce the risk of catheter-related infections.