A nurse reviews the arterial blood gas (ABG) values of a client admitted with pneumonia: pH, 7.32; PaCO2, 48 mm Hg; PaO2, 70 mm Hg; and HCO3, 24 mEq/L. What do these values indicate?
Metabolic Acidosis
Respiratory Acidosis
Metabolic Alkalosis
Respiratory Alkalosis
The Correct Answer is B
A. Metabolic Acidosis
Metabolic acidosis is characterized by a low pH and low bicarbonate (HCO3) level. In this case, the pH is low (indicating acidosis), but the bicarbonate level is within the normal range, which is inconsistent with metabolic acidosis.
B. Respiratory Acidosis
This is correct. Respiratory acidosis is characterized by an elevated partial pressure of carbon dioxide (PaCO2), leading to a decrease in pH. The ABG values in this case indicate elevated PaCO2 and a low pH, consistent with respiratory acidosis.
C. Metabolic Alkalosis
Metabolic alkalosis is characterized by a high pH and high bicarbonate (HCO3) level. In this case, the pH is low (indicating acidosis), which is inconsistent with metabolic alkalosis.
D. Respiratory Alkalosis
Respiratory alkalosis is characterized by a low partial pressure of carbon dioxide (PaCO2) and a high pH. In this case, the PaCO2 is elevated, which is inconsistent with respiratory alkalosis.

Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A.Regular insulin typically begins to take effect 30 minutes after administration. Administering insulin at the time of the meal (1645) would not allow enough time for the insulin to reach its onset of action, potentially resulting in the blood glucose level being high during the meal.
B.Regular insulin has an onset of action of 30 minutes. By administering the insulin at 1615, it will start to take effect by 1645, when the meal arrives, and help ensure the insulin action aligns with the meal, preventing postprandial hyperglycemia.
C.Administering insulin at 1545 would be too early and could lead to the insulin peaking before the meal, which could result in hypoglycemia if the insulin peak occurs before the patient has food to absorb the glucose.
D.Administering insulin at 1600 would result in the insulin starting to work too soon, with the onset happening before the meal and possibly leading to hypoglycemia if the insulin peaks before the meal is consumed.
Correct Answer is A
Explanation
A. "If a vial of insulin will be used up within 21 days, it may be kept at room temperature."
This statement suggests a duration of up to 21 days for room temperature storage after the vial is in use. However, most insulins can typically be stored at room temperature for up to 28 days after initial use. This recommendation might be more conservative than necessary for many types of insulin.
B. "If a vial of insulin will be used up within 2 weeks, it may be kept at room temperature."
This choice suggests a timeframe of 14 days for room temperature storage after opening the vial. However, for many insulins, the recommended duration for room temperature storage after opening is up to 28 days.
C. "If you are going to use up the vial within 1 month, it can be kept at room temperature."
This option extends the timeframe to 1 month for room temperature storage after the vial is in use. However, the generally recommended duration for many insulins is up to 28 days after opening.
D. "If a vial of insulin will be used up within 1 week, it may be kept at room temperature."
This choice suggests a very short duration of 7 days for room temperature storage after opening the vial. Most insulins can typically be stored at room temperature for a longer duration after initial use.
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