The nurse is caring for a patient who is anxious and dizzy following a traumatic experience. The arterial blood gas findings include: pH 7.48, PaO2 110, PaCO2 25, and HCO3 24. Which intervention should the nurse expect to be prescribed to correct this problem?
Encourage the patient to breathe in and out slowly into a paper bag.
Immediately administer oxygen via a mask and monitor oxygen saturation.
Anticipate the administration of intravenous sodium bicarbonate.
Prepare to start an intravenous fluid bolus using isotonic fluids.
The Correct Answer is A
The correct answer is choice A: Encourage the patient to breathe in and out slowly into a paper bag.
Choice A rationale: The patient’s arterial blood gas (ABG) results indicate respiratory alkalosis, as evidenced by the elevated pH (7.48) and decreased PaCO2 (25 mm Hg). Respiratory alkalosis often results from hyperventilation, which can occur due to anxiety. Breathing into a paper bag helps to increase CO2 levels in the blood, thereby correcting the alkalosis.
Choice B rationale: Administering oxygen is not appropriate in this scenario because the patient’s PaO2 is already elevated (110 mm Hg), indicating that oxygenation is not the issue. Providing additional oxygen would not address the underlying problem of hyperventilation and respiratory alkalosis.
Choice C rationale: Intravenous sodium bicarbonate is used to treat metabolic acidosis, not respiratory alkalosis. In this case, the patient’s HCO3 is within the normal range (24 mEq/L), indicating that there is no metabolic acidosis present.
Choice D rationale: Starting an intravenous fluid bolus with isotonic fluids is not indicated for correcting respiratory alkalosis. This intervention is more appropriate for patients experiencing hypovolemia or dehydration, which is not suggested by the patient’s ABG results.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","C","D"]
Explanation
The correct answer is choice A, C, and D.
Choice A rationale:
Lethargy is a common symptom of metabolic alkalosis due to the body’s attempt to compensate for the altered pH balance, leading to decreased energy levels and fatigue.
Choice B rationale:
Kussmaul’s respirations are typically associated with metabolic acidosis, not alkalosis. These deep, labored breaths are the body’s way of trying to expel excess carbon dioxide to correct acidosis.
Choice C rationale:
Circumoral paresthesia, or tingling around the mouth, is a symptom of metabolic alkalosis. This occurs due to changes in calcium ion concentration affecting nerve function.
Choice D rationale:
Bicarbonate excess is a direct cause of metabolic alkalosis. Elevated bicarbonate levels in the blood lead to an increased pH, resulting in alkalosis.
Choice E rationale:
Flushing is not a typical symptom of metabolic alkalosis. It is more commonly associated with conditions that cause vasodilation or increased blood flow to the skin.
Correct Answer is D
Explanation
Sodium 155 mEq/L. Choice A rationale:
A urine specific gravity of 1.035 indicates concentrated urine and is consistent with fluid volume deficit. However, it is not the most specific finding for this condition.
Choice B rationale:
A BUN (blood urea nitrogen) level of 19 mg/dL can be a normal value. It is within the reference range (usually around 7-20 mg/dL) and does not provide specific information about fluid volume deficit.
Choice C rationale:
A hematocrit of 44.9% can also be within the normal range for some individuals, and while it can be elevated in cases of fluid volume deficit, it is not as sensitive as other parameters for detecting this condition.
Choice D rationale:
This is the correct answer because a sodium level of 155 mEq/L is elevated and indicates hypernatremia, which is associated with fluid volume deficit. Hypernatremia occurs when there is a relative lack of water in relation to the sodium concentration in the blood, and it can lead to dehydration
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