A nurse is reviewing the medical records of four clients who have an acid-base imbalance. The nurse should recognize that which of the following clients is at risk for respiratory alkalosis?
A client who is taking a thiazide diuretic.
A client who is vomiting.
A client who has salicylate intoxication.
A client who has hypoventilation.
None
None
The Correct Answer is C
The correct answer is Choice C.
Choice A rationale: Thiazide diuretics cause potassium and chloride loss, leading to metabolic alkalosis, not respiratory alkalosis. Hypokalemia decreases hydrogen ion excretion, increasing bicarbonate levels. Metabolic alkalosis is characterized by pH >7.45 and HCO₃⁻ >26 mEq/L rather than decreased PaCO₂.
Choice B rationale: Vomiting leads to metabolic alkalosis due to gastric acid loss. Hydrogen ion depletion increases bicarbonate concentration, shifting pH above normal. Arterial blood gases typically show increased HCO₃⁻ (>26 mEq/L) with a compensatory increase in PaCO₂ (>45 mmHg), not respiratory alkalosis.
Choice C rationale: Salicylate intoxication initially induces hyperventilation, reducing PaCO₂ levels below 35 mmHg and increasing pH above 7.45, leading to respiratory alkalosis. As toxicity progresses, metabolic acidosis may develop due to lactic acid accumulation, but early stages primarily present with respiratory alkalosis.
Choice D rationale: Hypoventilation leads to CO₂ retention, increasing PaCO₂ above 45 mmHg, forming carbonic acid (H₂CO₃) and causing respiratory acidosis. Blood gases show pH <7.35 with elevated PaCO₂, not respiratory alkalosis, which is caused by excessive CO₂ elimination through hyperventilation.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale:
A blood glucose level of 110 mg/dL is within the normal range for a non-pregnant individual. During pregnancy, the target range for blood glucose levels may vary, but 110 mg/dL does not typically raise concerns for preeclampsia.
Choice C rationale:
A haemoglobin level of 13 g/dL is within the normal range for a pregnant woman. While haemoglobin levels are important to monitor during pregnancy, this value alone does not indicate a significant concern related to preeclampsia.
Choice D rationale:
Deep tendon reflexes (DTR) of 2+ are within the normal range. Higher DTR levels may be concerning, but a 2+ rating is normal and does not raise immediate alarm for preeclampsia.
Correct Answer is B
Explanation
Choice A rationale:
Decreasing the maintenance IV solution infusion rate is not the appropriate action for addressing late decelerations of the fetal heart rate. Late decelerations are a concerning sign during labor, indicating possible fetal distress. This can be caused by inadequate oxygenation of the fetus, and reducing IV fluids would not directly address this issue.
Choice B rationale:
Placing the client in a lateral (side-lying) position is the correct action when late decelerations are observed. This position helps to improve uteroplacental blood flow and can relieve pressure on the inferior vena cava, thus increasing oxygen supply to the fetus.
Choice C rationale:
Administering oxygen via face mask at 2 L/min is not the priority action in response to late decelerations. While oxygen may be beneficial in certain situations, it is not the initial intervention for addressing fetal heart rate decelerations.
Choice D rationale:
Administering misoprostol 25 mcg vaginally is not appropriate for addressing late decelerations. Misoprostol is a medication used for cervical ripening and induction of labor, but it does not directly address fetal heart rate changes.
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