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.
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 A
Explanation
Choice A rationale:
Instructing the client to maintain scheduled mealtimes is essential for a postpartum client with type 1 diabetes mellitus who is breastfeeding. Consistent and balanced meals help stabilize blood glucose levels, especially in diabetic clients who need to manage their insulin.
Choice B rationale:
Checking blood glucose levels every 8 hours is not appropriate for a postpartum client with type 1 diabetes mellitus. Diabetic clients typically need to monitor their blood glucose more frequently, especially after meals and during breastfeeding.
Choice C rationale:
Instructing the client to take more insulin with each meal than she did prior to pregnancy is not accurate advice. The insulin requirements may change during pregnancy, but it is essential to follow the healthcare provider's guidance on adjusting insulin doses after delivery.
Choice D rationale:
Limiting carbohydrate intake to 30 grams per day is not suitable for a breastfeeding postpartum client with type 1 diabetes mellitus. Carbohydrates are a crucial source of energy, and breastfeeding mothers usually require more carbohydrates to support lactation and energy needs. Restricting carbohydrates to such a low level could be harmful.
Correct Answer is C
Explanation
Choice A rationale:
Blood pressure of 136/88 mm Hg should be monitored, but it is not a finding that the nurse needs to urgently report to the provider following the administration of butorphanol. The blood pressure reading is slightly elevated but might be attributed to pain or anxiety during labor.
Choice B rationale:
Moderate fetal heart rate variability is a reassuring sign of fetal well-being and is an expected finding during labor. It does not require immediate reporting to the provider.
Choice C rationale:
Respiratory rate of 100/min is significantly increased and should be reported to the provider following the administration of butorphanol. Respiratory depression is a potential side effect of opioids like butorphanol, and a respiratory rate of 100/min raises concern for potential respiratory compromise.
Choice D rationale:
Urinary output of 120 mL in 2 hours is an acceptable finding during labor and does not require immediate reporting to the provider. Adequate urinary output varies, but generally, 30 mL/hour is considered acceptable during labor.
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