The Braden Scale is the most widely used bedside tool for predicting which patients are likely to develop a pressure injury. By scoring six clinical domains it converts a nursing assessment into a single number that triggers a matched prevention protocol.
Why pressure injury risk scoring matters
Pressure injuries — also called pressure ulcers or bedsores — develop when sustained mechanical load cuts off blood flow to skin over a bony prominence. They are largely preventable when identified early, but they are easy to miss during a busy ward round. The Braden Scale was developed by Barbara Braden and Nancy Bergstrom and validated in multiple clinical settings specifically to give nurses a structured, repeatable way to identify patients at risk before any skin change is visible.
How the Braden total is scored
The scale sums six subscales:
sensory perception 1–4
moisture 1–4
activity 1–4
mobility 1–4
nutrition 1–4
friction & shear 1–3
total 6–23 (lower = higher risk)Because lower scores mean more impairment, the total runs inversely to risk. A patient who is bedfast, immobile, constantly moist, and poorly nourished accumulates low subscale scores and a low — high-risk — total.
What each subscale measures
Sensory perception scores whether the patient can feel and communicate discomfort from pressure. A patient with a spinal cord injury or heavy sedation cannot feel the pain that normally prompts shifting position, so they score low and accumulate pressure without warning.
Moisture scores how often the skin is wet from sweat, wound exudate, or incontinence. Wet skin softens and becomes fragile, dramatically lowering the threshold for injury.
Activity scores how much the patient moves around — from walking around the ward (score 4) to confined to bed (score 1). Even sitting in a chair reduces sacral pressure compared with being supine.
Mobility is distinct from activity: it scores how much the patient can reposition themselves during a given position. A patient can be mobile (able to walk) but temporarily unable to shift weight freely while in bed.
Nutrition scores intake across the day. Poor nutritional status reduces tissue resilience. A patient who eats less than half their meals, has no nutritional supplement, and cannot take oral fluids scores 1.
Friction and shear scores only 1–3 (no level 4 exists) because the original authors found only three clinically distinct states. It captures whether the patient slides against surfaces or requires significant assistance to be repositioned, both of which abrade and shear skin.
Interpretation and interventions
A common banding is 19–23 no risk, 15–18 mild, 13–14 moderate, 10–12 high, and 9 or below very high risk. As the total falls, interventions escalate:
| Risk band | Typical responses |
|---|---|
| Mild (15–18) | Routine repositioning every 2 hours, moisture barriers, inspect skin at each turn |
| Moderate (13–14) | Add heel protection, pressure-redistributing overlay, increase repositioning frequency |
| High (10–12) | Specialist pressure-relieving mattress, dietitian review, barrier creams, heel suspension |
| Very high (9 or below) | All above plus skin specialist referral, consider alternating-pressure surface, intensive nutritional support |
Always pair the score with direct skin inspection: the Braden Scale flags risk but never replaces examining the skin over bony prominences — the sacrum, heels, ischial tuberosities, trochanters, elbows, and occiput.
Limitations and situations the score handles poorly
- Sedated and ventilated patients cluster at the floor. In intensive care, most patients score low on sensory perception, activity, and mobility simultaneously, so the scale discriminates poorly between ICU patients — many units treat all ventilated patients as high risk regardless of the number.
- Device-related pressure injuries are not captured. Injuries under oxygen masks, cervical collars, catheters, and endotracheal tube fixings are a growing share of hospital-acquired pressure injuries, and none of the six subscales asks about devices. Inspect under and around every device separately.
- Darker skin tones hide early warning signs. Category 1 injury (non-blanching erythema) is harder to see on darker skin, so a “protective” Braden score can coexist with an injury already under way. Palpate for warmth, bogginess, and pain rather than relying on colour change.
- Children need a different instrument. The adult Braden Scale is not validated for paediatrics; the Braden Q (and the newer Braden QD, which adds device-related risk) are the paediatric adaptations.
- Inter-rater variability is real. Subscales like nutrition and moisture involve judgement; two nurses can score the same patient 2–3 points apart. Score with the definitions in front of you, and document why a level was chosen, not just the number.
When to reassess
Reassess on admission, then at intervals set by local policy — typically every 24 to 48 hours on acute wards — and immediately whenever the patient’s condition changes: new sedation, surgery, reduced oral intake, new incontinence, or a period of extended immobility such as a long procedure. A score that was acceptable at admission can shift into the high-risk band overnight.
Sources and references
- Bergstrom N, Braden BJ, Laguzza A, Holman V. The Braden Scale for Predicting Pressure Sore Risk. Nursing Research (1987) — the original validation study
- EPUAP/NPIAP/PPPIA — Prevention and Treatment of Pressure Ulcers/Injuries: Clinical Practice Guideline — current international prevention guidance
- National Pressure Injury Advisory Panel (NPIAP) — staging, risk assessment, and prevention resources
Reviewed by the Gera Tools editorial team. The subscales, 6–23 range, and banding follow the published Bergstrom & Braden scale. This is clinical decision support for trained staff, not a substitute for clinical judgement, skin inspection, or local protocol — it is not medical advice. Last reviewed 2026-07-02.