Which type of tissue is more susceptible to pressure injury due to higher metabolism?

Muscle tissue is more susceptible to pressure injury due to its higher metabolic activity compared to other types of tissues. This increased metabolism means that muscle requires a steady supply of oxygen and nutrients to function properly and heal. When pressure is applied, blood flow to areas of muscle can be compromised more quickly than in tissues with lower metabolic needs. As a result, muscle cells can deteriorate faster under pressure, leading to potential pressure injuries.

In contrast, skin acts as a barrier and is the first line of defense against injury, though it too can be damaged under prolonged pressure. Fat tissue, while it can cushion underlying structures, does not have the same metabolic demands as muscle and is generally less prone to injury. Bone is more rigid and does not have the metabolic requirements that make muscle more vulnerable to pressure injuries. Therefore, the metabolic characteristics of muscle contribute significantly to its risk for developing pressure injuries when subjected to sustained pressure.