Good question. Since the report is in our Wiki, we use inline commenting to have discussions around each issue and pull in the relevant PM, lead developer or lead designer. Out of that we either modify our designs and prototypes, if it's something we're working on, or if it has already been built create an issue for developers to look at (we use Jira). If it's something major then we'll pull in relevant team members and discuss over a whiteboard.

Also worth noting we tag our usability test reports in a way that they are pulled in to product requirement wikis, so hopefully they are always referenced even in future projects.