A nurse on a medical unit has received report on four clients. Which of the following clients should the nurse evaluate first?
A. client who has COPD with an oxygen saturation of 90%
B A client who has diabetes mellitus with a HbA1C of 9%
C A client who has heart failure with 2+ pitting edema of the lower extremities
D A client who has a fever of 38.4° C (101.2° F) with tenderness in the right lower quadrant