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The Braden Scale for Predicting Pressure Sore Risk is the most widely used and extensively validated pressure ulcer risk assessment tool in the world. Developed by Barbara Braden and Nancy Bergstrom in 1987, this scale evaluates six subscales that represent the major risk factors for pressure ulcer development: sensory perception, moisture, activity, mobility, nutrition, and friction/shear.
Pressure ulcers (also called pressure injuries or bedsores) are a significant healthcare problem affecting approximately 2.5 million patients in US healthcare facilities annually. They are associated with prolonged hospital stays, increased mortality (the presence of a pressure ulcer doubles the risk of death in hospitalized patients), significant patient suffering, and enormous healthcare costs estimated at $9.1-11.6 billion per year in the United States.
The Braden Scale consists of six subscales. Five subscales (sensory perception, moisture, activity, mobility, and nutrition) are scored from 1 to 4, while friction and shear is scored from 1 to 3. Total scores range from 6 (highest risk) to 23 (lowest risk). Note that lower scores indicate higher risk, which is the opposite of many clinical scoring systems.
Risk categories are defined as: very high risk (score 9 or below), high risk (10-12), moderate risk (13-14), mild risk (15-18), and no risk (19-23). These thresholds have been validated in numerous studies and directly guide the intensity of prevention interventions. Patients at higher risk levels require more frequent repositioning, specialized support surfaces, nutritional optimization, and skin inspection.
The sensory perception subscale assesses the patient's ability to respond meaningfully to pressure-related discomfort — patients who cannot feel or communicate pain from sustained pressure are at much higher risk. Moisture assesses skin exposure to urine, perspiration, or wound drainage, which macerate skin and increase vulnerability. Activity and mobility assess the patient's ability to change and control body position.
The Braden Scale has been endorsed by the National Pressure Ulcer Advisory Panel (NPUAP), the European Pressure Ulcer Advisory Panel (EPUAP), and most national nursing organizations. Its psychometric properties include sensitivity of approximately 57-83% and specificity of 64-90%, depending on the cutoff score used. It is a required assessment in most US healthcare facilities under CMS regulations and accreditation standards.
The Braden Scale sums six subscale scores (lower = higher risk):
Total: 6-23. Risk Level: 0=No risk (19-23), 1=Mild (15-18), 2=Moderate (13-14), 3=High (10-12), 4=Very High (<=9). Intervention: 0=Standard care, 1=Basic prevention, 2=Enhanced prevention, 3=Intensive prevention.
A Braden score of 19-23 indicates no significant risk — standard skin care. 15-18 indicates mild risk — basic prevention (regular repositioning, skin inspection, moisture management). 13-14 indicates moderate risk — enhanced prevention (more frequent turning, pressure-redistribution mattress). 10-12 indicates high risk — intensive prevention (q2h turning, specialty mattress, nutritional support). 9 or below indicates very high risk — maximum prevention measures. Remember: lower scores = higher risk.
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Braden 15/23: Mild risk. Chairfast with limited mobility post-surgery. Basic prevention measures recommended.
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Braden 7/23: Very high risk. Sedated ICU patient, immobile, poor nutrition. Maximum prevention protocol required.
The Braden Scale is a validated tool that assesses pressure ulcer risk by evaluating six subscales: sensory perception, moisture, activity, mobility, nutrition, and friction/shear. Scores range from 6-23, with lower scores indicating higher risk.
On admission, daily for ICU patients, every 48-72 hours for acute care patients, weekly for long-term care residents, and whenever there is a significant change in patient condition.
Scores of 14 or below typically warrant a pressure-redistribution support surface. Scores of 12 or below often require a specialty mattress (alternating pressure, low-air-loss, or air-fluidized). Specific protocols vary by institution.
The Braden Scale is designed so that each subscale measures a protective factor. Higher subscale scores indicate more protection (better sensation, less moisture, more activity). When protective factors are low (score 1), risk is highest.
Mobility and activity are generally considered the most critical factors, as immobility is the primary cause of pressure ulcers. However, moisture and nutrition significantly modify risk and are important targets for intervention.
Many pressure ulcers are preventable with appropriate interventions. Studies show that systematic risk assessment and evidence-based prevention protocols can reduce pressure ulcer incidence by 50-60%.
Friction occurs when skin moves against a surface (e.g., during repositioning). Shear occurs when layers of tissue slide against each other (e.g., when the head of the bed is elevated and the patient slides down). Both damage skin and blood vessels.
Malnutrition impairs wound healing, reduces skin integrity, and weakens immune function. Adequate protein (1.25-1.5 g/kg/day), calories, and micronutrients (vitamin C, zinc) are essential for pressure ulcer prevention and healing.
While most pressure ulcers are preventable, some may occur despite optimal care. The Kennedy terminal ulcer, for example, occurs in patients at the end of life as part of the dying process and may not be preventable.
Stage 1: non-blanchable redness. Stage 2: partial-thickness skin loss (blister or shallow open area). Stage 3: full-thickness skin loss (visible fat). Stage 4: full-thickness tissue loss (visible muscle, tendon, or bone). Unstageable: covered by slough or eschar.
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