The nurse identifies which of the following as one of the primary nursing interventions for preventing surgical site infection?

A. Having the patient splint their incision site when coughing and deep breathing:
While splinting the incision site can help alleviate pain and prevent strain on the surgical wound during coughing and deep breathing, it is not a primary intervention for preventing surgical site infection. Infection prevention is more directly related to sterile technique, antibiotic prophylaxis, and maintaining a clean environment around the wound. Splinting can support postoperative recovery, but it does not directly prevent infection.

B. Offering around the clock pain medication in the immediate post-operative phase:
Providing pain medication is important for patient comfort and to facilitate early mobilization after surgery. However, pain management does not directly prevent surgical site infections. The focus for infection prevention lies in maintaining sterility, administering antibiotics as prescribed, and appropriate wound care rather than pain control alone.

C. Administering prescribed pre-operative antibiotics within 30-60 minutes of surgery:
The administration of prophylactic antibiotics before surgery, typically within 30-60 minutes of the incision, is a primary intervention for preventing surgical site infections (SSIs). This timing ensures that the antibiotics are at therapeutic levels in the bloodstream when the surgical procedure begins, reducing the risk of introducing bacteria into the surgical site. This is a well-established guideline for infection prevention in surgical settings.

D. Performing the first dressing change on a new surgical site in the postoperative setting:
The first dressing change should generally be done by a healthcare professional using sterile technique. However, the timing and handling of the first dressing change are more related to wound care practices rather than a primary strategy for preventing infection. Infection prevention primarily involves proper antibiotic prophylaxis, maintaining a sterile field, and managing the surgical site during the early post-operative period. The first dressing change, while important for wound healing, is not the most immediate or primary intervention for preventing surgical site infection.

A) Pernicious anemia:
Vitamin B12 injections are most commonly used to treat pernicious anemia, which is caused by a deficiency in vitamin B12 due to an inability to absorb the vitamin from the gastrointestinal tract. This condition is often associated with a lack of intrinsic factor, a protein required for vitamin B12 absorption. As a result, the body cannot make enough healthy red blood cells, leading to anemia. The treatment of pernicious anemia typically involves lifelong vitamin B12 injections, making this the correct answer.

B) Hemolytic anemia:
It is not typically treated with vitamin B12 injections. Instead, hemolytic anemia may require treatments that address the underlying cause of red blood cell destruction, such as corticosteroids, immunosuppressive therapy, or splenectomy, depending on the type of hemolysis. Therefore, vitamin B12 would not be the primary treatment for this type of anemia.

C) Iron deficiency anemia:
It is typically treated with iron supplements, either orally or intravenously, rather than vitamin B12. While both conditions cause anemia, the treatment for iron deficiency anemia is not vitamin B12, so this is not the correct choice.

D) Aplastic anemia:
This condition is usually treated with treatments such as bone marrow stimulants, blood transfusions, or bone marrow transplantation, rather than vitamin B12. Vitamin B12 supplementation would not be indicated for the treatment of aplastic anemia.