four weeks after admission to a long term care facility.
20
Therefore, many clinicians
recommend using a standardized pressure ulcer risk assessment tool to assess a
resident’s pressure ulcer risks upon admission, weekly for the first four weeks after
admission for each resident at risk, then quarterly, or whenever there is a change in
cognition or functional ability.
21,
22
A resident’s risk may increase due to an acute illness
or condition change (e.g., upper respiratory infection, pneumonia, or exacerbation of
underlying congestive heart failure) and may require additional evaluation.
Regardless of any resident’s total risk score, the clinicians responsible for the resident’s
care should review each risk factor and potential cause(s) individually
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to: a)Identify
those that increase the potential for the resident to develop pressure ulcers; b) Decide
whether and to what extent the factor(s) can be modified, stabilized, removed, etc., and c)
Determine whether targeted management protocols need to be implemented. In other
words, an overall risk score indicating the resident is not at high risk of developing
pressure ulcers does not mean that existing risk factors or causes should be considered
less important or addressed less vigorously than those factors or causes in the resident
whose overall score indicates he or she is at a higher risk of developing a pressure ulcer.
Pressure Points and Tissue Tolerance
Assessment of a resident’s skin condition helps define prevention strategies. The skin
assessment should include an evaluation of the skin integrity and tissue tolerance (ability
of the skin and its supporting structures to endure the effects of pressure without adverse
effects) after pressure to that area has been reduced or redistributed.
Tissue closest to the bone may be the first tissue to undergo necrosis. Pressure ulcers are
usually located over a bony prominence, such as the sacrum, heel, the greater trochanter,
ischial tuberosity, fibular head, scapula, and ankle (malleolus).
An at-risk resident who sits too long on a static surface may be more prone to get ischial
ulceration. Slouching in a chair may predispose an at-risk resident to pressure ulcers of
the spine, scapula, or elbow (elbow ulceration is often related to arm rests or lap
boards). Friction and shearing are also important factors in tissue ischemia, necrosis
and pressure ulcer formation.
Pressure ulcers may develop at other sites where pressure has impaired the circulation to
the tissue, such as pressure from positioning or use of medical devices. For example,
pressure ulcers may develop from pressure on an ear lobe related to positioning of the
head; pressure or friction on areas (e.g., nares, urinary meatus, extremities) caused by
tubes, casts, orthoses, braces, cervical collars, or other medical devices; pressure on the
labia or scrotum related to positioning (e.g., against a pommel type cushion); pressure
on the foot related to ill-fitting shoes causing blistering; or pressure on legs, arms and
fingers due to contractures or deformity resulting from rheumatoid arthritis, etc.
While pressure ulcers on the sacrum remain the most common location, pressure ulcers
on the heel are occurring more frequently,
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are difficult to assess and heal, and require
early identification of skin compromise over the heel.