wound care plan

Help, I am working on a care plan for a home health client with venous stasis ulcers. We are using unna boots weekly and also silver strips on the actual ulcer. I have two problems, i cant find any literature to support using a silver strip with an unna boot, is this normal? (obviously i didnt write the order) and two i am really not sure what an acceptable outcome would be (my main issue is impaired skin integrity with other diagnosis being ineffective tissue perfusion, ineffective therapeutic regimen, and altered physical mobility we can only pick four). I feel like saying the ulcer will be better is a little hopeful and I would have a hard time guessing on the timeline for that. should i go with a 50% decrease in tow weeks or what, improvement is too vauge, ahh. HELP.