The skin and tissue need blood to get oxygen and food, and pressure on the skin blocks the blood supply. If the pressure is maintained, a red area may be seen over a bony part of the body. This is how pressure ulcers begin to form. Yes, other contributing factors in the formation of pressure ulcers are heat and moisture. The major factor in preventing pressure ulcers is pressure relief.
Pressure relief allows the blood to flow in and out of the tissue to exchange nutrients and waste.
Studies indicate that for people in a wheelchair, repositioning should be done at least every hour and pressure relief should be performed every 15 minutes. The airpulse cushion automatically provides pressure relief and shifts pressure contact points. It also addresses the issues of heat and moisture by directing cooling air directly to the top of the seating pad with every cycle. What's more, the airpulse is customizable. You set the cycle times to as frequent a cycle as you want, and set the cushion pressure to your preference .