The practical nurse (PN) is making a home visit to an older male adult who was recently diagnosed with Herpes zoster (shingles). The client reports the onset of severe burning pain along the right side of his trunk.

What action should the PN take?

The correct answer is choice B, Serum creatinine. Choice A rationale:

The white blood cell count (WBC) is an important parameter for assessing the body's immune response to infections. While it can provide valuable information about the presence of an infection, it is not directly related to nephrotoxicity. Therefore, it is not the most important laboratory value to review before administering an antibiotic that can cause nephrotoxicity.

Choice B rationale:

Serum creatinine is a crucial laboratory value to assess kidney function. It is a waste product that is filtered by the kidneys, and its level in the blood is a reliable indicator of kidney function. If the serum creatinine level is elevated, it suggests impaired kidney function, which can be a warning sign of nephrotoxicity. Reviewing the serum creatinine level before administering nephrotoxic antibiotics is essential to ensure that the client's kidneys are functioning adequately and to avoid potential harm.

Choice C rationale:

Hemoglobin and hematocrit are indicators of the client's red blood cell count and blood's oxygen-carrying capacity. While these values can provide information about the client's overall health status, they are not directly related to nephrotoxicity. Therefore, they are not the most important laboratory values to review in this particular scenario.

Choice D rationale:

Serum calcium levels are essential for assessing bone health, nerve function, and muscle contractions. However, they are not directly related to nephrotoxicity, and reviewing serum calcium levels alone would not provide sufficient information about kidney function. Hence, it is not the most critical value to review before administering nephrotoxic antibiotics

The correct answer is Choice A:

The solution should approximate the client's body temperature (98°F or 36°C). Choice A rationale:

The ideal temperature for administering an oil retention enema is to approximate the client's body temperature. Using a solution at the client's body temperature helps to prevent discomfort and potential injury to the rectal mucosa. The temperature of 98°F (36°C) is considered safe and comfortable for the client.

Choice B rationale:

This option is incorrect because the temperature of the enema solution does matter. Administering an enema that is too cold or too hot can cause discomfort, cramping, and potential damage to the rectal tissue.

Choice C rationale:

This option is not the best choice because relying solely on the client's comfort level may not ensure the optimal temperature for the enema solution. The client's perception of comfort can vary, and it may not necessarily reflect the ideal temperature for administration.

Choice D rationale:

This option is incorrect because using a temperature higher than the client's body temperature, such as 110°F (43°C), can be harmful and increase the risk of burns or injury to the rectal lining.