A client, confused and short of breath, is brought to the emergency department by a family member. The medical history reveals chronic bronchitis and hypertension. To learn more about the client's current respiratory problem, the physician orders a chest X-ray and arterial blood gas (ABG) analysis. When reviewing the ABG report, the nurse sees many abbreviations. What does a lowercase "a" in an ABG value represent?
a) Acid-base balance
b) Arterial blood
c) Arterial oxygen saturation
d) Alveoli
Answer: b) Arterial blood
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