The nurse discovers that an older client with no history of cardiac or renal disease has an elevated serum magnesium level. To further investigate the cause of this electrolyte imbalance, what information is most important for the nurse to obtain from the client's medical history?
Genetically inherited disorders of family members.
Frequency of laxative use for chronic constipation.
Length and frequency of the client's tobacco use.
Ingestion of shellfish or fish oil capsules daily.
The Correct Answer is B
A) Incorrect- Genetically inherited disorders of family members: While a family history of certain disorders might provide some insight, it is not typically the primary cause of elevated serum magnesium levels in an older adult.
B) Correct- Elevated serum magnesium levels are commonly associated with chronic laxative use, especially those containing magnesium-based compounds. Laxatives can lead to excessive magnesium intake, causing hypermagnesemia.
C. Incorrect- Smoking is not a common cause of elevated serum magnesium levels.
D. Incorrect- While dietary sources can contribute to magnesium intake, chronic laxative use is a more likely cause in this context.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
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.
Correct Answer is C
Explanation
A) Incorrect- While providing comfort measures like blankets and warm drinks can help the client feel more comfortable, they do not address the underlying thyroid hormone imbalance.
B) Incorrect- Hemoglobin level is not directly related to the client's symptoms or the thyroid hormone imbalance. Monitoring hemoglobin is important in assessing anemia but is not the priority in this case.
C) Correct- The client's symptoms (raspy voice, cold intolerance, fatigue) along with an elevated TSH and low T3 and T4 levels suggest hypothyroidism. Levothyroxine is a synthetic thyroid hormone used to treat hypothyroidism. Administering the prescribed dose of levothyroxine is crucial to address the thyroid hormone imbalance and alleviate the symptoms.
D. Incorrect- Non-pitting edema is not a common symptom of hypothyroidism. The client's symptoms and lab results are more indicative of hypothyroidism, and addressing the thyroid hormone imbalance is the priority.
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