To assist wound healing in recent wounds, you can use either programme 2 or 4. These two programmes are identical in all respects, except in their duration (15 min vs 25 min). Treat for longer time for larger wounds. One treatment per day is all that is needed, but you can treat for longer or more often a day if you wish.
Example: Surgery – if you are going in for elective surgery, treat the area to be cut a few hours BEFORE you go into theatre, and then daily after surgery.
Electrode placement: Any placement that brackets the injured site is good. It does not even have to be close to the wound site, as long as the current flows through the wound site. Positive and negative placement not so important here.