A nurse is reviewing laboratory results for a client who has metabolic alkalosis. Which of the following blood gas values should the nurse expect?
pH 7.48 (7.35 to 7.45) PaCO 32 mm Hg (35 to 45 mm Hg). HC0 24 mg (22 to 25 mEq/L)
pH 7.36 (7:35 to 7.45) PaCO 38 mm Hg (35 to 45 mm Hg. HCO 25 mEq/L (22 to 26 mEq/L)
pH 7.46 (7.35 to 7.45) PaCO 36 mm Hg (35 to 45 mm Hg)HCO 29 mEq/L (22 to 25 mEq/L)
pH 7.26 (7.35 to 7.45). Paco; 35 mm Hg (35 to 45 min Hg HCD 18 mEq/L (22 to 26 mEq/L)
The Correct Answer is C
A. pH 7.48, PaCO₂ 32 mm Hg, HCO₃ 24 mEq/L: The elevated pH indicates alkalosis, but HCO₃ is within normal limits. This pattern suggests respiratory alkalosis with compensatory changes rather than metabolic alkalosis.
B. pH 7.36, PaCO₂ 38 mm Hg, HCO₃ 25 mEq/L: These values are within normal limits, indicating acid-base balance. They do not reflect metabolic alkalosis and would not explain clinical signs of alkalemia.
C. pH 7.46, PaCO₂ 36 mm Hg, HCO₃ 29 mEq/L: The elevated pH indicates alkalosis, and the increased HCO₃ identifies a metabolic origin. The PaCO₂ is near normal, suggesting minimal respiratory compensation, which is consistent with metabolic alkalosis.
D. pH 7.26, PaCO₂ 35 mm Hg, HCO₃ 18 mEq/L: The low pH and low HCO₃ indicate metabolic acidosis, not alkalosis. These values are inconsistent with the expected findings for metabolic alkalosis.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Grapes: Grapes are a common choking hazard for toddlers because of their size, shape, and firmness. They can easily block a child’s airway if not cut into small, manageable pieces. Including grapes in the pamphlet raises awareness for parents and caregivers to prevent choking.
B. Potatoes: Cooked, soft potatoes are generally safe for toddlers to eat. They do not pose a significant choking risk when properly prepared, so they are not a primary concern in choking prevention education.
C. Corn: Whole corn kernels are usually safe for toddlers because they are small and soft enough to swallow. Corn does not commonly obstruct the airway unless the child has swallowing difficulties.
D. Oranges: Orange segments are soft and unlikely to cause choking. While seeds or membranes could pose minor risks, oranges are generally considered safe and are not a primary choking hazard for toddlers.
Correct Answer is C
Explanation
A. Calcium Calcium is primarily responsible for bone health, nerve transmission, and muscle contraction. While it plays a minor role in the blood-clotting phase of wound healing, it is not a primary nutrient targeted to speed up the healing of an open soft-tissue leg wound.
B. Vitamin D Vitamin D works in tandem with calcium for bone mineralization and supports immune function. While important for overall health, it is not as directly involved in the cellular repair of a dermal wound as protein, Vitamin C, or Zinc are.
C. Protein Protein is the most critical nutrient for wound healing. It is essential for collagen synthesis, tissue repair, and the formation of new blood vessels (angiogenesis). When a client has an open wound, the body enters a hypermetabolic state that requires significant amounts of amino acids to rebuild the skin and underlying tissues.
D. Fats While fats provide a concentrated source of energy and are necessary for cell membrane integrity, they are generally not the nutrient of focus when a client is struggling with wound healing. The body typically has enough stored adipose tissue to meet the energy demands of healing unless the client is severely malnourished.
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