A nurse is caring for an older adult client who has just returned from PACU after receiving a spinal anesthetic during knee surgery. For which of the following findings should the nurse notify the provider?

Client reports knee pain changed from 4/10 to 6/10.

Pulse oximetry changed from 98% to 96%.

Temperature changed from 37.2°C (99.0°F) to 37.5°C (99.5°F).

Systolic blood pressure changed from 140 mm Hg to 110 mm Hg.