A client has a nasogastric (NG) tube placed during abdominal surgery. During postoperative convalescence, which arterial blood gas values are consistent with metabolic alkalosis?
pH 7.49, PCO₂ 45 mm Hg, HCO₃ 32 mEq/L (32 mmol/L), PO₂ 90 mm Hg.
pH 7.30, PCO₂ 20 mm Hg, HCO₃ 22 mEq/L (22 mmol/L), PO₂ 85 mm Hg.
pH 7.46, PCO₂ 55 mm Hg, HCO₃ 36 mEq/L (36 mmol/L), PO₂ 95 mm Hg.
pH 7.29, PCO₂ 35 mm Hg, HCO₃ 25 mEq/L (25 mmol/L), PO₂ 99 mm Hg.
The Correct Answer is A
Choice A rationale
pH 7.49, PCO₂ 45 mm Hg, HCO₃ 32 mEq/L (32 mmol/L), PO₂ 90 mm Hg indicates metabolic alkalosis. The elevated pH and HCO₃ levels are consistent with this condition.
Choice B rationale
pH 7.30, PCO₂ 20 mm Hg, HCO₃ 22 mEq/L (22 mmol/L), PO₂ 85 mm Hg indicates metabolic acidosis with respiratory compensation, not metabolic alkalosis.
Choice C rationale
pH 7.46, PCO₂ 55 mm Hg, HCO₃ 36 mEq/L (36 mmol/L), PO₂ 95 mm Hg indicates metabolic alkalosis with respiratory compensation. However, the pH is slightly lower than in Choice A, making Choice A more indicative of metabolic alkalosis.
Choice D rationale
pH 7.29, PCO₂ 35 mm Hg, HCO₃ 25 mEq/L (25 mmol/L), PO₂ 99 mm Hg indicates metabolic acidosis, not metabolic alkalosis.
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Correct Answer is A
Explanation
Choice A rationale
Corneal abrasion is a contraindication for the use of ophthalmic ketorolac. Ketorolac is a nonsteroidal anti-inflammatory drug (NSAID) that can delay healing and increase the risk of further damage to the cornea.
Choice B rationale
Chemical burns are not a primary contraindication for ophthalmic ketorolac. However, the treatment of chemical burns typically involves other specific interventions, and the use of ketorolac should be carefully considered.
Choice C rationale
Radiation exposure is not a direct contraindication for the use of ophthalmic ketorolac. The medication is used to reduce inflammation and pain, which may be beneficial in managing symptoms related to radiation exposure.
Choice D rationale
A foreign body in the eye is not a primary contraindication for ophthalmic ketorolac. However, the foreign body should be removed, and the eye should be thoroughly examined before administering any medication.
Correct Answer is C
Explanation
Choice A rationale
Restricting fluids is not a primary limitation for clients with Crohn’s disease. Adequate hydration is important for overall health and managing symptoms.
Choice B rationale
Limiting foods high in calcium and iron is not typically recommended for Crohn’s disease. These nutrients are important for maintaining bone health and preventing anemia, which can be concerns for individuals with Crohn’s disease.
Choice C rationale
An elimination diet can help identify trigger foods that may exacerbate symptoms of Crohn’s disease. This approach involves removing certain foods from the diet and gradually reintroducing them to determine which foods cause symptoms.
Choice D rationale
Avoiding gluten is not necessary for all individuals with Crohn’s disease. While some may benefit from a gluten-free diet, it is not a universal recommendation for managing the condition.