Which rationale supports the nurse's assessment of a patient's magnesium level?

The electrolyte is the most abundant intracellular cation present in the body.

The electrolyte may cause extracellular fluid overload.

Magnesium may affect neuromuscular excitability and contractility.

The patient is at risk for hypotension when the levels of magnesium decrease.

Answer and Explanation

The Correct Answer is C

Choice A rationale:

While magnesium is indeed the most abundant intracellular cation in the body, this fact alone does not explain why the nurse would assess the patient's magnesium level.

Choice B rationale:

Magnesium imbalance can cause issues in the extracellular fluid compartment, but this choice does not explain why the nurse would specifically assess the patient's magnesium level.

Choice D rationale:

While hypotension can be a symptom of severe magnesium deficiency, this choice does not provide a rationale for assessing the patient's magnesium level. In this case, choice C is correct because magnesium plays a crucial role in neuromuscular excitability and contractility. Abnormal magnesium levels can lead to neuromuscular symptoms such as muscle weakness, tremors, and spasms. Additionally, magnesium is involved in cardiac muscle function, and low magnesium levels can lead to arrhythmias and other cardiac issues. Therefore, assessing the patient's magnesium level is essential in understanding their neuromuscular and cardiac health.

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Correct Answer is B

Explanation

Choice A rationale:

The base does interact with acids in the acid-base balance. Bases, by definition, are substances that can accept hydrogen ions (protons) and neutralize acids. In the context of acid-base balance, bases help regulate the pH of body fluids by counteracting the effects of acids.

Choice B rationale:

The role of the base in the acid-base balance is to promote the excretion of acid. Bicarbonate ions (HCO3-) are a vital component of the body's buffering system, helping to neutralize excess acid. The kidneys play a crucial role in excreting acids from the body, maintaining the acid-base balance.

Choice C rationale:

The base does not activate the system of acid-base balance; instead, it is part of the body's natural buffering system. The acid-base balance is regulated by the lungs and kidneys, which work together to maintain the pH of body fluids within a narrow range (7.35-7.45)

Choice D rationale:

Bases do not increase the action of hydrogen ions. In fact, bases neutralize hydrogen ions, which are acidic. By accepting these ions, bases help to decrease the acidity of a solution, playing a key role in maintaining the body's acid-base balance.

A. Mexican Americans have higher rates of good blood pressure control. B. Mexican Americans are more likely to receive treatment for hypertension. C. Mexican Americans have the highest prevalence of hypertension in the world. D. Mexican Americans have lower levels of awareness of hypertension and its treatment.

Correct Answer is D

Explanation

Choice A rationale:

This statement is incorrect. Mexican Americans do not have higher rates of good blood pressure control compared to other populations.

Choice B rationale:

This statement is incorrect. Mexican Americans are not more likely to receive treatment for hypertension compared to other populations.

Choice C rationale:

This statement is incorrect. While hypertension is prevalent among Mexican Americans, stating they have the highest prevalence of hypertension in the world is inaccurate. The prevalence of hypertension is influenced by various factors and can vary across different regions globally.

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Which rationale supports the nurse's assessment of a patient's magnesium level?

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Naxlex Comprehensive Predictor Exams

Which role is attributed to the base in the acid-base balance?

Correct Answer is B

Explanation

The nurse presents information to a group of nursing students about cultural and ethnic health disparities related to hypertension.Which information would the nurse include about the comparison of Mexican Americans to White and Black populations?

Correct Answer is D

Explanation

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