A client has the following arterial blood gas values: pH, 7.52; PaO2 , 50 mm Hg (6.7 kPa); PaCO2 , 28 mm Hg (3.72 kPa); HCO3 – , 24 mEq/L (24 mmol/L). Based upon the client's PaO2 , which of the...

A client has the following arterial blood gas values: pH, 7.52; PaO2 , 50 mm Hg (6.7 kPa); PaCO2 , 28 mm Hg (3.72 kPa); HCO3 – , 24 mEq/L (24 mmol/L). Based upon the client's PaO2 , which of the following conclusions would be accurate?

1. The client is severely hypoxic.

2. The oxygen level is low but poses no risk for the client.

3. The client's PaO2 level is within normal range.

4. The client requires oxygen therapy with very low oxygen concentrations.