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. "I will notify my doctor if the stoma starts to look purple.": A stoma that appears purple can indicate compromised blood flow or ischemia, which is a medical emergency. Recognizing this sign and notifying the healthcare provider demonstrates understanding of proper stoma care and potential complications.
B. "I will irrigate the colostomy every day.": Ascending colostomies typically produce liquid to semi-liquid stool and are not routinely irrigated. Daily irrigation is usually reserved for descending or sigmoid colostomies to regulate bowel movements.
C. "I should expect my stool to be formed.": Stool from an ascending colostomy is usually liquid or semi-liquid because the stool has not yet passed through the majority of the colon where water absorption occurs. Expecting formed stool indicates a misunderstanding of colostomy output.
D. "I will empty the pouch every 2 to 3 hours.": Ascending colostomy output is frequent and liquid, but pouches are generally emptied when they are one-third to one-half full, not on a strict schedule. Overly frequent emptying is unnecessary and may increase the risk of skin irritation.
Correct Answer is B
Explanation
A. “I can remove my security band to give it to a family member”: Removing the security band compromises infant safety and facility protocols. Security bands must remain on the mother and infant to prevent abduction and ensure proper identification.
B. “I will have an identification that matches the one my baby wears.”: Matching identification bands for the mother and infant are a key safety measure to prevent mix-ups and unauthorized removal of the newborn. Understanding and adhering to this protocol demonstrates comprehension of facility security.
C. “I can take my baby to the lobby to visit family”: Infants should not be taken to unsecured areas like the lobby without proper authorization. Doing so violates security protocols and increases the risk of accidental or unauthorized removal.
D. “I will carry my baby to the nursery”: Infants are typically transported to the nursery by authorized staff or in secure bassinet transport. Parents should follow facility guidelines rather than carrying the baby independently to ensure safety and compliance with protocols.
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