A nurse is preparing to administer intramuscular epinephrine to a client who is experiencing anaphylaxis. Which of the following sites should the nurse use?

B. Respiratory infections can spread via droplets, necessitating airborne precautions and isolation in a private negative pressure room to prevent transmission to other clients and healthcare workers.

A A compound fracture involves an open wound where the bone has punctured the skin. While this client may require isolation precautions due to the open wound, the primary concern is not infectious in nature.

C. Aspiration pneumonia can be caused by inhalation of oral or gastric contents into the lungs, leading to infection. Therefore, such a client does not require isolation.

D Acute ketoacidosis in diabetes mellitus is a metabolic emergency but is not typically contagious or requiring isolation precautions for infection control.

The client is at highest risk for wound infection as evidenced by the blood glucose level

Rationale

Type 2 diabetes mellitus: The client has poorly controlled diabetes with a preoperative Hemoglobin A1C of 9.5% and elevated glucose levels (280 mg/dL currently). Elevated blood glucose levels impair immune function and increase the risk of surgical site infections, including wound infections.

Postoperative state: After total knee arthroplasty, surgical wounds are vulnerable to infection. Hyperglycemia (high blood glucose levels) further increases susceptibility to infections due to impaired wound healing and compromised immune response.

Evidence: The client's current blood glucose level of 280 mg/dL (normal range 74 to 106 mg/dL) indicates poor glycemic control, which is a significant risk factor for developing wound infections postoperatively.