A client with diabetes insipidus (DI) has an average urinary output of 500 ml. of dilute urine every hour for the last 4 hours. Which laboratory test is most important for the nurse to monitor?

The property of the drugs that, if shared by both, indicates a need to closely monitor the client for drug toxicity is:

Highly protein bound.

When a drug is highly protein bound, it means that a significant portion of the drug molecules bind to proteins in the bloodstream. This binding can affect the availability and distribution of the drug in the body. If two drugs are highly protein bound and administered together, they may compete for binding sites on the proteins, leading to increased levels of unbound (free) drug in the bloodstream. This can result in higher drug concentrations and an increased risk of drug toxicity.

Closely monitoring the client for drug toxicity is necessary when drugs are highly protein bound because there is a potential for increased drug levels and associated adverse effects. Monitoring for signs and symptoms of drug toxicity, as well as routine laboratory tests to assess liver and kidney function, may be necessary in these cases.

The other properties listed do not necessarily indicate a need for closer monitoring for drug toxicity:

• Low bioavailability refers to the fraction of an administered dose that reaches the systemic circulation in an active form. While low bioavailability can affect the effectiveness of a drug, it does not directly imply a need for closer monitoring for drug toxicity.
• Short half-life refers to the time it takes for half of the drug concentration in the body to be eliminated. While drugs with short half-lives may require more frequent dosing, this property does not inherently suggest a need for closer monitoring for drug toxicity.
• High therapeutic index indicates a wide margin of safety for a drug, meaning that the effective dose is significantly lower than the toxic dose. A high therapeutic index implies that the drug has a wide safety margin and is less likely to cause drug toxicity.

The correct answer is a. Inspect skin for redness and b. Use a residual limb shrinker.

Choice A rationale:

Inspecting the skin for redness is crucial to identify any signs of infection or pressure sores early. Redness can indicate irritation or the beginning of a pressure ulcer, which needs to be addressed promptly to prevent further complications.

Choice B rationale:

Using a residual limb shrinker helps to reduce swelling and shape the residual limb for prosthetic fitting. It also helps in managing pain and promoting healing by providing consistent compression.

Choice C rationale:

Avoiding range of motion exercises is incorrect. Range of motion exercises are essential to maintain joint flexibility and prevent contractures, which can hinder the use of a prosthetic limb.

Choice D rationale:

Applying alcohol to the residual limb after bathing is not recommended. Alcohol can dry out the skin and cause irritation, which can lead to skin breakdown and infection. Instead, the residual limb should be kept clean and moisturized with appropriate skin care products.