Braden Scale for Pressure Injury Risk: Assessment and Prevention Guide
Hospital-acquired pressure injuries affect approximately 2.5 million patients annually in the United States, costing the healthcare system an estimated $9 to $11 billion per year. The Braden Scale is the most widely validated and used pressure injury risk assessment tool in clinical practice. It evaluates six risk factors — sensory perception, moisture, activity, mobility, nutrition, and friction/shear — to produce a composite score that guides preventive interventions. Accurate Braden scoring and timely intervention can prevent the majority of hospital-acquired pressure injuries.
The Six Braden Scale Subscales
Each subscale is scored from 1 (highest risk) to 3 or 4 (lowest risk), with a total possible score of 23. Lower total scores indicate higher pressure injury risk. Sensory Perception (1-4) evaluates the ability to respond meaningfully to pressure-related discomfort. Moisture (1-4) assesses the degree to which skin is exposed to moisture from incontinence, perspiration, or wound drainage.
Activity (1-4) measures the degree of physical activity — bedridden, chairfast, walks occasionally, or walks frequently. Mobility (1-4) assesses the ability to change and control body position. Nutrition (1-4) evaluates usual food intake pattern. Friction and Shear (1-3) assesses the degree of assistance required for movement and the potential for skin contact friction.
- Sensory Perception (1-4): ability to respond to pressure discomfort
- Moisture (1-4): skin exposure to moisture
- Activity (1-4): degree of physical activity
- Mobility (1-4): ability to change body position
- Nutrition (1-4): usual food intake pattern
- Friction and Shear (1-3): movement assistance needs and skin friction risk
Interpreting Braden Scores
Total scores map to risk categories that determine the level of preventive intervention required. A score of 19-23 indicates no significant risk — standard care applies. A score of 15-18 indicates mild risk. A score of 13-14 indicates moderate risk. A score of 10-12 indicates high risk. A score of 9 or below indicates severe risk requiring intensive prevention measures.
The individual subscale scores are as important as the total. A patient with a total of 16 (mild risk overall) but a moisture subscale of 1 (constantly moist) needs aggressive moisture management regardless of the total score. Identify the lowest subscale scores and target interventions specifically to those risk factors.
Evidence-Based Prevention Strategies
Repositioning is the foundation of pressure injury prevention. Turn immobile patients every 2 hours, alternating between supine, left lateral, and right lateral positions. Use a 30-degree lateral tilt rather than a full 90-degree side-lying position to reduce pressure on the trochanter. Elevate heels off the bed using heel suspension devices or pillows under the calves — the heel is the second most common pressure injury site after the sacrum.
Support surfaces should match the risk level. Standard hospital mattresses are adequate for low-risk patients. Moderate-risk patients benefit from pressure redistribution surfaces such as alternating pressure mattresses or reactive foam overlays. High-risk patients may require advanced surfaces including low-air-loss or air-fluidized beds. Ensure the surface is appropriate and functioning on every shift assessment.
Nutrition and Skin Integrity
Adequate nutrition is essential for maintaining skin integrity and supporting healing. Patients scoring low on the Braden nutrition subscale should receive a dietary consult. Protein intake of 1.25 to 1.5 grams per kilogram per day supports skin maintenance and wound healing. Supplement with vitamin C (250 mg twice daily) and zinc (220 mg daily) for patients at high risk or with existing pressure injuries.
Moisture management prevents maceration, which weakens the skin and increases vulnerability to friction and shear forces. Use incontinence briefs with moisture-wicking properties, apply barrier creams to perineal skin, and address underlying incontinence causes when possible. Patients with excessive perspiration may benefit from moisture-wicking underpads and frequent linen changes.
Documentation and Communication
Document the total Braden score, individual subscale scores, skin assessment findings, and all prevention interventions implemented. Effective documentation demonstrates that risk was identified, appropriate interventions were implemented, and outcomes were monitored. This documentation supports both patient safety and liability protection.
Communicate Braden scores and skin findings during every handoff. Include the score, any changes from the previous assessment, current prevention measures in place, and specific areas of concern. Many facilities use skin bundles or standardized handoff protocols that include pressure injury prevention as a required element.
Frequently Asked Questions
What Braden score requires pressure injury prevention interventions?
Most facilities initiate enhanced prevention measures at a Braden score of 18 or below. The lower the score, the more intensive the interventions. Scores below 12 typically trigger the full prevention bundle including specialty surfaces, repositioning every 2 hours, nutritional supplements, and moisture management.
How often should the Braden Scale be reassessed?
Assess on admission, with any significant change in patient condition, and at regular intervals. Acute care facilities typically reassess every 24 to 48 hours. ICU patients may require assessment every 12 hours. Long-term care facilities assess weekly to monthly depending on stability.
Can a patient with a high Braden score still develop a pressure injury?
Yes. The Braden Scale identifies risk but cannot predict every pressure injury. Factors not captured by the scale — such as medical device pressure, surgical positioning, and acute hemodynamic instability — can cause pressure injuries in patients with otherwise low-risk Braden scores.
What is the most important single intervention for preventing pressure injuries?
Repositioning. Regular turning and repositioning reduces sustained tissue pressure, which is the direct cause of pressure injuries. No support surface, skin product, or nutritional intervention can compensate for leaving a patient in the same position for extended periods.