How do pressure injuries (pressure ulcers) become ulcerated?

Updated: Mar 26, 2020
  • Author: Christian N Kirman, MD; Chief Editor: John Geibel, MD, MSc, DSc, AGAF  more...
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Tissues are capable withstanding enormous pressures for brief periods, but prolonged exposure to pressures just slightly above capillary filling pressure initiates a downward spiral toward tissue necrosis and ulceration. [19, 20] The inciting event is compression of the tissues against an external object such as a mattress, wheelchair pad, bed rail, or other surface.

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