Final answer:
The nurse should question the order for a tap water enema due to the potential risk of increasing intra-abdominal pressure and causing rupture in a patient with an expanding AAA scheduled for surgery.
Step-by-step explanation:
The nurse should question the order for a tap water enema until clear fecal return in a client diagnosed with an expanding abdominal aortic aneurysm (AAA) who is scheduled for surgery in the morning. The rationale for this is that administering an enema to a patient with an expanding AAA could potentially increase intra-abdominal pressure, which may exacerbate the aneurysm and lead to rupture, a life-threatening complication. The other orders listed are typical preoperative measures:
- Type and crossmatch for 2 units of blood which is necessary to prepare for possible blood transfusions during or after surgery.
- Bedrest with bathroom privileges to minimize physical exertion that could increase the risk of aneurysm expansion or rupture.
- Keep NPO (nothing by mouth) after midnight to reduce the risk of aspiration during anesthesia.