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
The correct answer is choice c. Heart rate 72/min.
Choice A rationale:
A blood pressure of 80/50 mm Hg is within the normal range for a full-term newborn.
Choice B rationale:
A respiratory rate of 55/min is also within the normal range for a newborn, which typically ranges from 30 to 60 breaths per minute.
Choice C rationale:
A heart rate of 72/min is significantly lower than the normal range for a newborn, which is typically between 120 to 160 beats per minute. This bradycardia should be reported to the provider as it may indicate an underlying issue.
Choice D rationale:
A temperature of 36.5°C (97.7°F) is within the normal range for a newborn, which is generally between 36.5°C to 37.5°C (97.7°F to 99.5°F).
Correct Answer is A
Explanation
Choice A rationale:
Measuring the abdominal circumference at the level of the newborn's umbilicus every 12 hr is a critical action in this scenario. The newborn has necrotizing enterocolitis (NEC), a serious gastrointestinal condition, and measuring abdominal circumference can help monitor for changes in abdominal distention, which is a sign of NEC progression.
Choice B rationale:
Inserting an orogastric decompression tube with low wall suction may not be the most appropriate action for a newborn with NEC. While decompression tubes can be used in some cases of NEC, their insertion should be guided by specific clinical indications, and not all cases require them.
Choice C rationale:
Providing the newborn with an iron-rich formula containing vitamin B12 every 2 hr is not indicated for NEC. NEC requires specialized medical management and treatment, which may include bowel rest and other interventions, but providing iron-rich formula is not one of them.
Choice D rationale:
Administering nitric oxide inhalation therapy is not relevant to the management of NEC. Nitric oxide inhalation therapy is used for respiratory conditions, particularly persistent pulmonary hypertension of the newborn, and does not address the gastrointestinal issues seen in NEC.
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