A nurse is caring for a client undergoing diagnostic evaluation for suspected pulmonary edema. Which finding on an arterial blood gas (ABG) analysis is consistent with pulmonary edema?
Decreased pH (acidosis)
Elevated partial pressure of oxygen (PaO2)
Decreased partial pressure of carbon dioxide (PaCO2)
Increased bicarbonate (HCO3-) levels
The Correct Answer is A
A) Correct. Pulmonary edema can lead to impaired gas exchange, resulting in respiratory acidosis, characterized by a decreased pH on ABG analysis.
B) Incorrect. Pulmonary edema typically leads to decreased oxygenation, so an elevated PaO2 would not be consistent with this condition.
C) Incorrect. A decreased PaCO2 is more commonly associated with respiratory alkalosis and is not a primary finding in pulmonary edema.
D) Incorrect. Increased bicarbonate (HCO3-) levels are more indicative of metabolic alkalosis and are not typically associated with pulmonary edema.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A) Incorrect. Increased lung compliance would not contribute to pulmonary edema; in fact, it might reduce the risk of fluid accumulation in the lungs.
B) Correct. Impaired alveolar fluid clearance, often due to altered pulmonary capillary permeability, is a key factor in the pathophysiology of pulmonary edema.
C) Incorrect. Constricted pulmonary blood vessels (vasoconstriction) would reduce blood flow to the lungs and are not a primary factor in pulmonary edema.
D) Incorrect. Enhanced left ventricular contractility, while beneficial for cardiac function, is not directly related to the development of pulmonary edema.
Correct Answer is C
Explanation
A) Incorrect. Elevated body temperature is not a typical manifestation of pulmonary edema.
B) Incorrect. Bradycardia is not a common finding in pulmonary edema.
C) Correct. Crackles in the lung fields are a hallmark sign of pulmonary edema due to the accumulation of fluid in the alveoli.
D) Incorrect. Hypertension is not a typical finding in pulmonary edema; it is more commonly associated with conditions like heart failure.
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