The nurse is assessing a client who has returned from surgery following a thoracotomy. Which finding indicates the client is experiencing adequate gas exchange?

The client demonstrates effective coughing and deep breathing exercises.

Current arterial blood gas results are a pH 7.30, PaCO2 48 mm Hg, HCO3-25 mEq/L (25 mmol/L), and a PaO2 75 mm Hg.

The client's heart rate is 82 beats/minute and respiratory rate is 16 breaths/minute.

An oxygen saturation reading of 96% is obtained using pulse oximetry.