A client has a dull headache, is dizzy, and has an increased pulse rate. The results of arterial blood gas analysis are as follows: pH 7.26; partial pressure of carbon dioxide, 50 mm Hg (6.7 kPa); and...

A client has a dull headache, is dizzy, and has an increased pulse rate. The results of arterial blood gas analysis are as follows: pH 7.26; partial pressure of carbon dioxide, 50 mm Hg (6.7 kPa); and bicarbonate, 24 mEq/L (24 mmol/L). These findings indicate which of the following acid-base imbalances?

1. Respiratory alkalosis.

2. Respiratory acidosis.

3. Metabolic acidosis.

4. Metabolic alkalosis.