Thank you for the replies. A little background may help... The pt had surgery on his lower leg following a car accident in September. The dehiscence occurred post-op, infection and pain were not properly managed at home so he was hospitalized. The pt was sent to rehab to be managed. He has been in this facility since November and off antibiotics for a week (although I suspect MRSA, just waiting for test results). The medical diagnosis in his chart is "lower extremity wound infection due to dehiscence post surgery". As far as my nursing diagnosis and interventions I am going to focus on what will promote his healing, and prevent any further complications. I'm pretty confident that the delay in healing is due to his other medical problems, HIV, HTN, previous sarcoma in other leg, etc. The one thing I am stuck on is filling in the blank for: "Explain the anatomy and physiology of the system the disease has affected". I can't figure out if I need to explain what the wound is doing to affect his body, or what his other problems are doing to cause delay in healing. Maybe I'm over thinking. It's such a tiny piece to this project that has me halted!!