Dressing system 600 includes a sterile porous substrate 131, which can be fabricated from polyurethane foam, polyvinyl alcohol foam, gauze, felt or other suitable material; a semi-permeable adhesive cover 132 such as that sold under the trademark Avery Denison???; a single lumen drainage tube 122 for the application of vacuum and removal of fluids from the woundsite; and a pliable fluid vessel 601