A nurse is reviewing a client's arterial blood gas (ABG) results. Which of the following ABG results should the nurse anticipate when caring for a client with acidosis?
pH 7.42, PaCO2 48 mm HG, HCO3 25 mEq/L
pH 7.28, PaCO2 63 mm HG, HCO3 22 mEq/L
pH 7.49, PaCO2 30 mm Hg, HCO3 35 mEq/L
pH 7.36; PaCO2 42 mm Hg, HCO3 26 mEq/L
The Correct Answer is B
A. This result shows a slightly elevated PaCO2, which could suggest respiratory compensation for a metabolic alkalosis, not acidosis, as the pH is within the normal range.
B. This result indicates both a low pH and an elevated PaCO2, which are consistent with respiratory acidosis. The low HCO3 also suggests a metabolic acidosis component, making it the best match for a client with acidosis.
C. The elevated pH indicates alkalosis. The low PaCO2 and high HCO3 further suggest a primary respiratory alkalosis with metabolic compensation.
D. These values are within normal limits, indicating neither acidosis nor alkalosis.
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Naxlex Comprehensive Predictor Exams
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Correct Answer is {"dropdown-group-1":"A","dropdown-group-2":"C"}
Explanation
The nurse should first place the client in high Fowler's position to ease the breathing and improve oxygenation, as the client is experiencing increased dyspnea and chest pain. This position allows for better lung expansion and can be a critical immediate intervention. Following this, the nurse should obtain IV access to facilitate the administration of medications and fluids as needed. IV access is essential for the rapid administration of potential treatments, including anticoagulants, which may be required if a pulmonary embolism is confirmed. These actions are prioritized to address the client's immediate respiratory distress and to prepare for further interventions based on the evolving clinical situation. It is important to note that each clinical scenario is unique, and the interventions should be tailored to the client's specific needs and the healthcare provider's clinical judgment.
Correct Answer is C
Explanation
A. The client has circumoral cyanosis: Circumoral cyanosis, or bluish discoloration around the mouth, is a sign of hypoxia but may not be present in all cases of hypoxemia. Pulse oximetry provides a more objective measurement.
B. The client's heart rate is 86 bpm: Heart rate may be within normal limits even in the presence of hypoxemia, as compensatory mechanisms may not be fully activated.
C. The client has a pulse ox of 90% on room air: A pulse oximetry reading of 90% indicates hypoxemia (oxygen saturation below normal levels), which is a significant finding, especially in a client with COPD who may already have compromised respiratory function.
D. The client is lethargic: Lethargy may occur with severe hypoxemia, but it is a late sign and may not always be present. Monitoring oxygen saturation is more reliable for early detection of hypoxemia.
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