The nurse is planning to administer two medications to a client at 0900. Which property of the drugs, if shared by both drugs, indicates a need to closely monitor the client for drug toxicity?
Low bioavailability.
Short half life.
Highly protein bound.
High therapeutic index.
The Correct Answer is C
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
After retinal detachment surgery, it is crucial to protect the eye and the surgical repair site from accidental trauma or pressure. Providing an eye shield helps to shield the eye during sleep when the client may not have conscious control over their movements.
This can help prevent inadvertent rubbing or bumping of the eye, which could potentially disrupt the surgical repair and hinder the healing process.
Obtaining vital signs every 2 hours during hospitalization is a routine nursing intervention for postoperative care in general but is not specific to retinal detachment surgery. The frequency of vital sign monitoring may vary depending on the client's overall condition and the healthcare provider's orders.
Teaching a family member to administer eye drops may be necessary for the client's ongoing care, but it is not specifically related to the immediate postoperative period. Eye drop administration instructions can be provided as part of the client's discharge teaching.
Encouraging deep breathing and coughing exercises is a general postoperative intervention that promotes respiratory function and helps prevent complications such as pneumonia. While important for overall postoperative care, it is not specific to retinal detachment surgery.
Correct Answer is A
Explanation
A) Correct- Zidovudine is an antiretroviral medication used in the treatment of HIV infection.
One of the potential side effects of zidovudine is hematological toxicity, including anemia (low red blood cell count) and neutropenia (low white blood cell count). The appearance of pinpoint, red, round spots on the skin could be indicative of petechiae, which are small hemorrhages caused by the leakage of blood into the skin. Petechiae can occur due to low platelet counts, a
component of the complete blood count (CBC). Monitoring the complete blood count is important for clients receiving zidovudine to identify any potential adverse effects on blood cell counts. Anemia and neutropenia can increase the risk of infection, bleeding, and other complications. Therefore, any changes in blood cell counts, including the presence of petechiae, should be reported to the healthcare provider for further evaluation and management.
B) Incorrect- This is used to assess allergic reactions and is not specifically related to the appearance of petechiae.
C) Incorrect- A skin biopsy is typically performed to diagnose skin conditions or diseases and is not the primary assessment to evaluate the cause of petechiae.
D) Incorrect- Electromyography is a diagnostic test used to assess muscle and nerve function and is not relevant to the appearance of petechiae associated with zidovudine use.
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