Pressure Ulcers/ Bedsores

What is a Pressure Ulcer/ Bedsores

Bedsores, more properly known as pressure ulcers or decubitus ulcers, are lesions caused by many factors such as: unrelieved pressure; friction; humidity; shearing forces; temperature; age; continence and medication; to any part of the body, especially portions over bony or cartilaginous areas such as sacrum, elbows, knees, ankles etc. Although easily prevented and completely treatable if found early, bedsores are often fatal – even under the auspices of medical care – and are one of the leading iatrogenic causes of death reported in developed countries, second only to adverse drug reactions. Prior to the 1950s, treatment was ineffective until Doreen Norton showed that the primary cure and treatment was to remove the pressure by turning the patient every two hours.

The definitions of the four pressure ulcer stages are revised periodically by the National Pressure Ulcer Advisory Panel (NPUAP) in the United States. Briefly, however, they are as follows:

Stage I is the most superficial, indicated by non blanchable redness that does not subside after pressure is relieved. This stage is visually similar to reactive hyperemia seen in skin after prolonged application of pressure. Stage I pressure ulcers can be distinguished from reactive hyperemia in two ways: a) reactive hyperemia resolves itself within 3/4 of the time pressure was applied, and b) reactive hyperemia blanches when pressure is applied, whereas a Stage I pressure ulcer does not. The skin may be hotter or cooler than normal, have an odd texture, or perhaps be painful to the patient. Although easy to identify on a light-skinned patient, ulcers on darker-skinned individuals may show up as shades of purple or blue in comparison to lighter skin tones.

Stage II is damage to the epidermis extending into, but no deeper than, the dermis. In this stage, the ulcer may be referred to as a blister or abrasion.

Stage III involves the full thickness of the skin and may extend into the subcutaneous tissue layer. This layer has a relatively poor blood supply and can be difficult to heal. At this stage, there may be undermining damage that makes the wound much larger than it may seem on the surface.

Stage IV pressure ulcer

Stage IV is the deepest, extending into the muscle, tendon or even bone.

Unstageable pressure ulcers are covered with dead cells, or eschar and wound exudate, so the depth cannot be determined.

Suspected Deep tissue injury: Purple or maroon localized area of discolored intact skin or blood-filled blister due to damage of underlying soft tissue from pressure and/or shear. The area may be preceded by tissue that is painful, firm, mushy, boggy, warmer or cooler as compared to adjacent tissue.

Further description: Deep tissue injury may be difficult to detect in individuals with dark skin tones. Evolution may include a thin blister over a dark wound bed. The wound may further evolve and become covered by thin eschar. Evolution may be rapid exposing additional layers of tissue even with optimal treatment.

Bedsores are accepted to be caused by three different tissue forces:

Pressure, or the compression of tissues. In most cases, this compression is caused by the force of bone against a surface, as when a patient remains in a single decubitus position for a lengthy period. After an extended amount of time with decreased tissue perfusion, ischemia occurs and can lead to tissue necrosis if left untreated.

Shear force, or a force created when the skin of a patient stays in one place as the deep fascia and skeletal muscle slide down with gravity. This can also cause the pinching off of blood vessels which may lead to ischemia and tissue necrosis.

Friction, or a force resisting the shearing of skin. This may cause excess shedding through layers of epidermis.

Aggravating the situation may be other conditions such as excess moisture from incontinence, perspiration or exudate. Over time, this excess moisture may cause the bonds between epithelial cells to weaken thus resulting in the maceration of the epidermis. Temperature is also a very important factor. The cutaneous metabolic demand rises by 13% for every 1°C rise in cutaneous temperature. When supply can't meet demand, necrosis therefore occurs. Other factors in the development of bedsores include age, nutrition, vascular disease, diabetes mellitus, and smoking, amongst others.

Treating pressure ulcers with Parafricta

Pressure sores, also more commonly known as bedsores or pressure ulcers, are areas of damaged skin and tissue. They develop when pressure cuts off the blood supply, usually when someone sits or lies in one position for too long, and are a complication of may illnesses or conditions where someoneis immobile for too long.

Medically, pressure sores develop from frictional shearing of compromised skin in static patients. The key nursing goal identified by EPUAP (European Pressure Ulcer Advisory Board) in this area was to "protect against the adverse effects of external mechanical forces: pressure, friction and shear on skin". Parafricta products help with this.

How Parafricta works?

Parafricta is a near zero-friction fabric that Parafricta™ Fabric products offer unique protection against two of these, friction and shear, and are compatible with all existing methods of mitigating the effects of pressure, e.g. pressure reducing mattresses and beds.