A nurse is caring for a client who is hyperventilating and has the following ABG results: pH 7.50 (7.35 to 7.45), PaCO₂ 29 mm Hg (35 to 45 mm Hg), and HCO₃ 25 mEq/L (21 to 28 mEq/L). The nurse should identify that the client has which of the following acid-base imbalances?

Respiratory acidosis

Respiratory alkalosis

Metabolic acidosis

Metabolic alkalosis

Answer and Explanation

The Correct Answer is B

Choice A Reason:

Respiratory acidosis is characterized by a low pH (below 7.35) and an elevated PaCO₂ (above 45 mm Hg). This condition occurs when there is an accumulation of carbon dioxide in the blood due to hypoventilation or impaired lung function. In this case, the client’s pH is elevated, and PaCO₂ is low, which does not align with respiratory acidosis.

Choice B Reason:

Respiratory alkalosis is indicated by a high pH (above 7.45) and a low PaCO₂ (below 35 mm Hg). This condition results from hyperventilation, which causes excessive exhalation of carbon dioxide. The client’s ABG results show a pH of 7.50 and a PaCO₂ of 29 mm Hg, consistent with respiratory alkalosis.

Choice C Reason:

Metabolic acidosis is characterized by a low pH (below 7.35) and a low HCO₃ (below 21 mEq/L). This condition occurs due to an accumulation of acids or a loss of bicarbonate in the body. The client’s pH is elevated, and HCO₃ is within the normal range, which does not indicate metabolic acidosis.

Choice D Reason:

Metabolic alkalosis is indicated by a high pH (above 7.45) and a high HCO₃ (above 28 mEq/L). This condition results from an excess of bicarbonate or a loss of acids. The client’s pH is elevated, but HCO₃ is within the normal range, which does not support a diagnosis of metabolic alkalosis.

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Correct Answer is C

Explanation

Choice A Reason

The client reports relief from pain when lying in the prone position. This statement is incorrect. Clients with a herniated lumbar disc typically find relief from pain when lying on their back with their knees bent or in a fetal position. Lying prone can sometimes exacerbate the pain.

Choice B Reason

The client reports that their low-back pain radiates upward toward one scapula. This statement is incorrect. Pain from a herniated lumbar disc usually radiates downward into the buttocks, legs, and sometimes the feet, not upward toward the scapula.

Choice C Reason

The client reports tingling and a burning sensation in one foot. This is the correct finding. A herniated lumbar disc can compress spinal nerves, leading to symptoms such as tingling, numbness, and a burning sensation in the legs and feet.

Choice D Reason

The client reports decreased pain when the affected leg is raised. This statement is incorrect. Raising the affected leg often increases pain due to the stretching of the sciatic nerve, which can be compressed by the herniated disc.

A. This medication can cause your urine to turn a dark color. B. Expect immediate relief after taking this medication. C. Take the medication with a high-protein food. D. Skip a dose of the medication if you experience dizziness.

Correct Answer is A

Explanation

Choice A Reason:

Carbidopa/levodopa can cause the urine to turn a dark color, such as red, brown, or black. This is a harmless side effect but can be alarming to patients if they are not forewarned. Informing patients about this potential change helps to prevent unnecessary concern.

Choice B Reason:

Expecting immediate relief after taking carbidopa/levodopa is not accurate. While some patients may experience symptom relief relatively quickly, it often takes several weeks for the full therapeutic effects to be realized. Patients should be advised to continue taking the medication as prescribed and to communicate with their healthcare provider about their progress.

Choice C Reason:

Taking carbidopa/levodopa with high-protein food is not recommended. High-protein foods can interfere with the absorption of the medication, reducing its effectiveness. It is generally advised to take the medication on an empty stomach or with a low-protein snack.

Choice D Reason:

Skipping a dose of the medication if experiencing dizziness is not advisable. Dizziness can be a side effect of carbidopa/levodopa, but it should be managed by adjusting the dose or timing of the medication rather than skipping doses. Patients should discuss any side effects with their healthcare provider to find the best management strategy.

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A nurse is caring for a client who is hyperventilating and has the following ABG results: pH 7.50 (7.35 to 7.45), PaCO₂ 29 mm Hg (35 to 45 mm Hg), and HCO₃ 25 mEq/L (21 to 28 mEq/L). The nurse should identify that the client has which of the following acid-base imbalances?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

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Correct Answer is C

Explanation

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Correct Answer is A

Explanation

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