6.1 Risk-Based Prevention: Moisture, Nutrition, Mobility, Cognition

6.1 Risk-Based Prevention: Moisture, Nutrition, Mobility, Cognition

Quick Answer: Pressure-injury prevention is a bundle matched to Braden subscale risk, not a single product. Moisture work means toileting, barrier, and containment—not more briefs. Nutrition starts early with intake, protein, and dietitian support. Progress mobility with physical therapy rather than only turning in bed. Cognition and sensory loss mean the person cannot report pain or self-reposition, so heels, sacrum, and devices need inspection at every hand-off. Tobacco is a perfusion risk.

Pressure injuries form when tissue cannot tolerate the load, moisture, shear, and metabolic environment around it. OpenExamPrep teaching for CWCN candidates treats prevention as a risk-based bundle: read the Braden subscales (or an equivalent structured tool), then pick interventions that change those subscale problems. A foam overlay plus a thicker brief is not a plan. Items in this area reward the nurse who can name the next intervention that matches the deficit.

Why the subscales drive the bundle

The Braden Scale for Predicting Pressure Sore Risk scores six domains: sensory perception, moisture, activity, mobility, nutrition, and friction/shear. Lower totals mean higher risk, but the pattern of low subscales is more useful than the total alone. Two people with a Braden total of 14 can need completely different plans: one is soaked and eating well; the other is dry, taking almost no food, and cannot feel a heel. This independent OpenExamPrep chapter uses the subscales as a clinical map. It does not present any single tool as a WOCNCB-owned requirement.

Activity is how much the person walks or sits out of bed. Mobility is whether they can make effective independent position changes. Sensory perception on Braden asks whether they can feel and respond to pressure-related discomfort. Cognition is not a separate Braden box, but dementia, delirium, aphasia, and sedation function the same way at the bedside: the person cannot report pain, cannot follow a turning plan, and cannot use a call light as a safety system. Treat that cluster as do-not-rely-on-self-report.

Prevention is not one product. Overlay, cream, boot, and brief each solve a different physics problem. If the subscale is moisture, a better mattress does not dry the sacrum. If the subscale is nutrition, a turning clock does not replace protein.

Moisture: stop soaking, do not just add briefs

Moisture macerates stratum corneum, raises friction, and makes shear more damaging. The common trap is apply-another-adult-brief when the person is already sitting in a soaked product. A second brief traps heat and fluid. Use this sequence instead:

1. Find and treat the source — diuretic timing, constipation with overflow, a leaking pouch, fever with sweat, wound exudate, or a catheter only if it is truly indicated.
2. Toileting and prompted voiding for people who can participate. A commode or urinal with help beats a brief if the person can transfer.
3. Barrier ointment or liquid polymer film on intact exposed skin. Cleanse with a pH-balanced product, not harsh bar soap that strips lipids.
4. Containment that wicks, changed on a wetness schedule. Do not leave a product for an entire shift because the outer cover looks dry. Do not stack plastic-backed pads under a low-air-loss cover that needs airflow.
5. Microclimate control: dry linens, fewer plastic layers, manage sweat in warm rooms.

Incontinence-associated dermatitis (IAD) is not a pressure injury, but wet, inflamed skin fails faster under load. IAD tends to be diffuse, often in skin folds, without a distinct wound centered on a bony prominence. A sacral pressure injury is typically over sacrum or coccyx, with a clearer margin related to load. Many people have both. The prevention plan then has to dry and protect the skin and offload—not dressing-only thinking.

Nutrition as prevention, not the full education chapter

This section covers nutrition as a prevention lever. Tissue that is short on calories and protein has less ability to tolerate ischemia and less reserve to repair repeated micro-damage. Waiting until a Stage 3 appears to call the dietitian is late prevention. Full counseling scripts, teaching plans, and disease-specific diet education belong in the education-focused chapter; here the testable habit is screen early, feed, and refer.

Watch for meal intake consistently under about half of trays, unintended weight loss, loose clothing, a falling weight curve, NPO status, nausea, dysphagia, depression, missing dentures, or a tray left across the room. Low albumin is a late, nonspecific marker—do not wait for it to prove malnutrition.

Early moves include offering food the person will actually eat, assisting at meals, protein-containing snacks or oral nutrition supplements between meals if intake is poor, a hydration plan if the person cannot independently drink, and registered dietitian referral when intake is inadequate, weight is falling, or a wound is already present. Reconcile high-protein goals with specialist plans (for example, some kidney-disease restrictions) rather than writing a blanket protein order that nobody can use. A daily multivitamin is not a complete nutrition plan. Once a pressure injury exists, calorie and protein needs often rise; dosing details stay in nutrition-focused teaching.

Activity, mobility, bedrest, cognition, devices, and tobacco

Bedrest orders, sedation, pain, contractures, and wait-for-PT-this-afternoon all freeze activity and mobility scores. Progress mobility as soon as it is medically allowed: dangle, sit, stand-pivot, walk to the bathroom. Involve physical therapy for transfer training and for equipment (trapeze, walker, total-lift) so nursing turning is not the only motion the person gets. A person who chair-sits for meals unloads the sacrum differently than a person who remains recumbent all day—if the chair cushion and posture are correct (next section). If they truly cannot move, the plan is frequent offloading plus a surface matched to risk. A thicker pillow stuffed under a still-loaded sacrum is not offloading.

People with neuropathy, spinal cord injury, sedation, dementia, or aphasia cannot reliably report pain and often cannot self-reposition. Prevention then depends on the team, not the call light. Skin inspection at hand-off is the safety net. Name the sites: sacrum/coccyx, both heels, ischia after sitting, occiput, ears, and every medical device (nasal cannula, NIV mask, tubes, splints, sequential-compression tubing, cervical collar). Device-related pressure injury is still a pressure injury. Look under the device on a schedule; do not assume another discipline already looked.

Heels deserve named attention: small surface area, little subcutaneous tissue, often in external rotation on a mattress that looks specialty. Float heels so they are completely off the surface, or use a dedicated heel offloading device that does not create a new Achilles or calf injury.

Tobacco is a perfusion problem for prevention teaching. Nicotine and smoke cause cutaneous vasoconstriction and raise carbon monoxide, so tissue already under load is less able to reperfuse during offloading. Document use and offer cessation support. A healthy-looking Braden nutrition score does not cancel smoking-related ischemia.

Scenario: Braden 13, wet, barely eating

Ms. R is 82 years old with a new hip fracture. Braden total is 13. Moisture is constantly moist, nutrition is probably inadequate, mobility is very limited, and sensory perception is slightly limited. She has been in the same brief for 5 hours. The head of bed is 45 degrees for comfort. Night shift charted turns every 2 hours. Trays are about 25 percent eaten. She smokes when family visits.

Priority bundle: cleanse and apply barrier now; start toileting or much more frequent containment changes—not a second brief on top of the first; dietitian today plus protein-containing supplements she will actually take; start physical therapy mobility as allowed; inspect heels, sacrum, and the oxygen tubing at this hand-off; lower the head of bed when safe; treat tobacco as a perfusion risk. Ordering a powered mattress alone would miss the moisture and nutrition subscales that are already failing.