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 C
Explanation
Choice A rationale:
The nurse should not include the information about beginning Kegel exercises 6 to 7 weeks after delivery because Kegel exercises are pelvic floor exercises that help improve bladder control and should be started earlier, immediately after childbirth. Delaying the exercises for 6 to 7 weeks could result in weaker pelvic floor muscles and potentially exacerbate postpartum urinary issues.
Choice B rationale:
The nurse should not include the information that the client doesn't need to use birth control if exclusively breastfeeding. While exclusive breastfeeding can provide some natural contraceptive effect, it is not a reliable method, and there is still a risk of pregnancy during the postpartum period. The nurse should advise the client to use appropriate birth control methods to prevent unintended pregnancies.
Choice C rationale:
This is the correct answer. The nurse should include information about the client's breasts becoming firm and tender 3 to 5 days after delivery. This is a normal physiological response known as engorgement, which occurs as the breasts prepare for breastfeeding.
Choice D rationale:
The nurse should not inform the client that her bleeding will remain bright red for the next 6 to 8 weeks. While some postpartum bleeding is normal (known as lochia), the color and amount of bleeding change over time. Initially, it is bright red and gradually transitions to a lighter color over the following weeks.
Correct Answer is A
Explanation
Choice A rationale:
This manifestation, urine output of 20 mL/hr, is an adverse reaction to magnesium sulfate administration. Magnesium sulfate can lead to decreased urine output, and it is essential for the nurse to monitor the client's urinary output closely. Low urine output may indicate decreased kidney function, which can be a sign of magnesium toxicity.
Choice B rationale:
Hypertension is expected in a client with preeclampsia, and magnesium sulfate is used to help manage and prevent seizures in these cases. While it is essential to monitor and manage hypertension during pregnancy, it is not considered an adverse reaction to magnesium sulfate.
Choice C rationale:
Hyperglycemia is not a common adverse reaction to magnesium sulfate. Magnesium sulfate may cause central nervous system depression, muscle weakness, and respiratory depression, but it does not typically cause hyperglycemia.
Choice D rationale:
A respiratory rate of 16/min is within the normal range for an adult and is not indicative of an adverse reaction to magnesium sulfate. Magnesium sulfate can cause respiratory depression at higher doses, but a respiratory rate of 16/min does not raise immediate concerns.
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