A nurse is reviewing the laboratory values of a client who has respiratory acidosis. Which of the following findings should the nurse expect?

Potassium 3.3 mEq/L.

HCO3- 30 mEq/L.

PacO2 50 mm Hg.

pH 7.45.

Answer and Explanation

The Correct Answer is C

PacO2 50 mm Hg. Choice A rationale:

Potassium levels are not directly related to respiratory acidosis. Potassium levels may be affected in certain conditions, but they are not specific indicators of respiratory acidosis.

Choice B rationale:

HCO3- (bicarbonate) levels may be elevated in metabolic alkalosis, not respiratory acidosis. In respiratory acidosis, the primary abnormality is an increased PacO2, not HCO3-.

Choice C rationale:

The partial pressure of carbon dioxide (PacO2) is a key parameter in diagnosing respiratory acidosis. In this case, a PacO2 of 50 mm Hg suggests hypoventilation and an excess of carbon dioxide in the blood, contributing to acidosis.

Choice D rationale:

The pH level given (pH 7.45) is within the normal range, which contradicts the diagnosis of respiratory acidosis. In respiratory acidosis, the pH would be expected to be below the normal range of 7.35-7.45 due to increased carbon dioxide levels.

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Correct Answer is ["A","C"]

Explanation

Choice A rationale:

Romaine lettuce is a good dietary source of magnesium. Since the patient has a low serum magnesium level, suggesting foods rich in magnesium like romaine lettuce can help improve magnesium levels.

Choice B rationale:

Lean red meat is not a good suggestion for a patient with low magnesium levels. While it contains magnesium, it is not as rich in magnesium as some other food choices.

Choice C rationale:

Almonds are a good dietary source of magnesium and can be recommended to the patient with low magnesium levels to help increase their magnesium intake.

Choice D rationale:

White rice is not a significant source of magnesium and may not be helpful in improving the patient's low magnesium levels.

Choice E rationale:

Seafood is a good source of various nutrients but is not particularly rich in magnesium compared to other options like almonds and romaine lettuce. Thus, it may not be the best suggestion for the patient's low magnesium levels.

A. Restoration of QRS Complex amplitude. B. Shortening of P-wave duration. C. Widening of the QRS complex. D. Reduction of T-wave amplitude.

Correct Answer is D

Explanation

The correct answer is choice D: Reduction of T-wave amplitude.

Choice A rationale:

The amplitude of the QRS complex is not directly affected by changes in serum potassium levels. It represents ventricular depolarization, and its restoration would not be an expected outcome of polystyrene sulfonate treatment

Choice B rationale:

Shortening of the P-wave duration is not an expected change with polystyrene sulfonate treatment. The P-wave represents atrial depolarization, which is not significantly impacted by the administration of this medication

Choice C rationale:

Widening of the QRS complex is associated with high serum potassium levels. The goal of polystyrene sulfonate treatment is to lower potassium levels and, thus, return the QRS complex to its normal width

Choice D rationale:

Polystyrene sulfonate aims to reduce serum potassium levels. When effective, this should result in a reduction of T-wave amplitude, which is a common ECG change seen with hyperkalemia

In conclusion, choice D is the correct answer, as a reduction in T-wave amplitude would be the expected change on the client's ECG if polystyrene sulfonate effectively lowers their serum potassium level.

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A nurse is reviewing the laboratory values of a client who has respiratory acidosis. Which of the following findings should the nurse expect?

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Naxlex Comprehensive Predictor Exams

The patient who has a serum magnesium level of 1.4 mg/dL is being treated with dietary modification. Which foods should the nurse suggest for this patient?

Correct Answer is ["A","C"]

Explanation

A nurse is caring for a client who has a serum potassium level of 5.5 mEq/L. The provider prescribes polystyrene sulfonate. If this medication is effective, the nurse should expect which of the following changes on the client's ECG?

Correct Answer is D

Explanation

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