After assessing a client who had surgery a few hours ago, the nurse immediately calls the health care provider. Which assessment findings prompted the nurse to make the urgent call? Select all that apply

The client has absent bowel sounds in all quadrants

The client's oxygen saturation changed from 98% to 95%

The client's abdomen is tender and rigid.

The client's blood pressure changed from 118/68 to 98/56 mmHg