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
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A Reason
Place several pillows behind the client’s head. This intervention is incorrect. Placing several pillows behind the client’s head can lead to neck flexion, which can increase intracranial pressure by obstructing venous outflow from the brain.
Choice B Reason
Place the client in a lateral semi-prone recumbent position. This position is not ideal for managing increased intracranial pressure. The optimal position is to keep the head of the bed elevated at 30 degrees with the neck in a neutral position to promote venous drainage and reduce ICP.
Choice C Reason
Keep the client’s neck in a midline position. This is the correct intervention. Keeping the neck in a midline position helps to ensure proper venous drainage from the brain, thereby reducing intracranial pressure. It is a standard practice in managing patients with elevated ICP.
Choice D Reason
Maintain flexion of the client’s hips at a 90-degree angle. This intervention is incorrect. Flexion of the hips can increase intra-abdominal pressure, which in turn can increase intracranial pressure. It is important to avoid hip flexion in patients with elevated ICP.
Correct Answer is D
Explanation
Choice A Reason
Maintain strict bed rest. This intervention is not typically recommended for managing Ménière’s disease. While rest during acute vertigo episodes is important, strict bed rest is not necessary and can lead to other complications such as muscle atrophy and decreased mobility.
Choice B Reason
Restrict fluid intake to the morning hours. This statement is incorrect. Fluid intake should be evenly distributed throughout the day to help manage the symptoms of Ménière’s disease. Restricting fluids to the morning hours can lead to dehydration and does not effectively manage the condition.
Choice C Reason
Administer aspirin. This intervention is not recommended for Ménière’s disease. Aspirin can worsen tinnitus, a common symptom of Ménière’s disease, and is generally avoided in these patients.
Choice D Reason
Provide a low-sodium diet. This is the correct intervention. A low-sodium diet helps reduce fluid retention in the body, which can decrease the pressure in the inner ear and help manage the symptoms of Ménière’s disease. Reducing sodium intake to 1,500-2,000 milligrams per day is often recommended.
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