A client who is found unresponsive has arterial blood gases drawn, and the results indicate the following:
- pH is 7.12 (normal range: 7.35-7.45)
- PaCO2 is 90 mm Hg (normal range: 35-45)
- HCO3- is 22 mEq/L (normal range: 22-26)
The nurse interprets the results as indicating which condition?
Metabolic alkalosis
Respiratory alkalosis
Respiratory acidosis
Metabolic acidosis
The Correct Answer is C
A. Metabolic alkalosis is characterized by a high pH and elevated bicarbonate levels, which is not present in these results.
B. Respiratory alkalosis would present with an increased pH and decreased PaCO2, which does not apply here.
C. The low pH (7.12) indicates acidemia, and the elevated PaCO2 (90 mm Hg) suggests hypoventilation and respiratory acidosis due to CO2 retention. The bicarbonate level is within normal limits, further supporting respiratory acidosis.
D. Metabolic acidosis would be indicated by a low pH and low bicarbonate levels; however, the bicarbonate is normal in this case, ruling out metabolic acidosis.
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Correct Answer is A
Explanation
A. +4 pitting edema is characterized by severe pitting that creates a deep indentation (greater than 8 mm) that remains for a prolonged period. This description matches the findings in option
B. This describes +1 pitting edema, which is not consistent with +4 edema.
C. This option describes +2 or +3 pitting edema, as the indentation subsides rapidly, which does not align with +4.
D. Although this describes deep pitting, the depth is less than 8 mm, which is not consistent with +4 edema.
Correct Answer is D
Explanation
A. In the anterior chest assessment, auscultation usually follows inspection and is typically done before percussion.
B. In the neck assessment, the nurse may inspect and then auscultate (e.g., carotid arteries) before palpation.
C. In the heart assessment, auscultation follows inspection but may not involve percussion.
D. In the abdomen, the correct order is to inspect, auscultate, and then percuss to assess bowel sounds effectively before creating additional disturbances with percussion.