Final answer:
The nurse should immediately notify the healthcare provider when encountering wound evisceration post-transverse colectomy, as it is a critical situation requiring prompt medical intervention.
Step-by-step explanation:
If a nurse caring for a client who had an open transverse colectomy 5 days ago finds that the wound has eviscerated, the first action after covering the wound with a sterile, saline-soaked dressing is to notify the provider immediately. This situation is a surgical emergency, and prompt medical intervention is required to prevent further complications. Documentation of the findings in the client's chart, repositioning the client to reduce tension on the wound, and administering pain medication as prescribed are necessary steps, but they follow urgent communication with the healthcare provider.