With which client should the nurse use caution when applying mafenide acetate (Sulfamylon), a topical antimicrobial agent, to a burned area? 1. A client with a creatinine level of 2.8 mg/dL. 2. A...

With which client should the nurse use caution when applying mafenide acetate (Sulfamylon), a topical antimicrobial agent, to a burned area?

1. A client with a creatinine level of 2.8 mg/dL.

2. A client with congestive heart failure.

3. A client with a pulse oximeter reading of 95%.

4. A client with diabetes Type 2 taking insulin.