A nurse is caring for a client who is in labour. Which of the following findings should prompt the nurse to reassess the client?

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.

Choice A rationale:
Swaddling the newborn with his legs extended is not the appropriate action for a newborn with neonatal abstinence syndrome (NAS). NAS occurs when a baby is born dependent on drugs, usually because the mother used opioids during pregnancy. Swaddling may provide some comfort, but extending the legs could increase discomfort and agitation.

Choice B rationale:
Scheduling larger volume feedings at less frequent intervals is not the correct approach for a newborn with NAS. These infants often have feeding difficulties and may require smaller, more frequent feedings to reduce the risk of aspiration.

Choice C rationale:
Maintaining eye contact with the newborn during feedings may not be well-tolerated by a baby with NAS. They can be irritable and easily overstimulated, and eye contact during feeding may exacerbate their agitation.

Choice D rationale:
Planning care to minimize handling of the newborn is the most appropriate action for a baby with NAS. These infants are sensitive to stimuli and can become agitated easily, so minimizing unnecessary handling helps reduce their distress.

The correct answer is D. Plan care to minimize handling of the newborn.

Here's why:

• Swaddling with legs extended: This is not recommended as it can be uncomfortable for the newborn and may exacerbate withdrawal symptoms.
• Larger volume feedings at less frequent intervals: This can be difficult for newborns with NAS due to their increased metabolic rate and may lead to overfeeding.
• Maintaining eye contact during feedings: While this is important for bonding, it can be overwhelming for newborns with NAS, who often prefer a calm environment.

Minimizing handling is a key intervention in caring for newborns with NAS. Excessive handling can trigger withdrawal symptoms and make the newborn more irritable. Instead, focus on gentle, soothing techniques like swaddling with arms tucked in, rocking, and providing a quiet, dimly lit environment.