How long will the vac therapy take to improve the pressure ulcer of an elderly patient?

Vacuum Devices: There is too much variability to answer your question. So many factors are involved with wound healing, and especially so with pressure ulcers, that giving a time frame is difficult without seeing the wound and knowing other information (how large, how deep, other medical conditions, location, underlying bone infections, etc.).

Depends: The length of time varies from patient to patient and depends on so many factors that a general statement can not be made. The vac is a fabulous device and works very well. Give it time to work and provide pressure relief with maximal nutritional support.