How long can you leave packing in a mrsa wound?

Depends a lot: If you are talking about 'packing' this must be a good sized wound, i dislike the term packing as a wound shouldn't be stuffed full rather very lightly filled with a dressing. How long? Depends on how much drainage there is and what materials are soaking it up. A wound specialist will try to adjust dressings to last at least two days. Please see a wound specialist.