What Are Pressure Ulcers and Who Is at Risk?
Pressure ulcers, also commonly known as bedsores or decubitus ulcers, are injuries to the skin and underlying tissue resulting from prolonged pressure. This pressure cuts off blood flow, depriving the skin of essential oxygen and nutrients, which can cause the tissue to break down and die. While they can affect anyone with limited mobility, the elderly are particularly susceptible due to factors like thinning skin, reduced mobility, and chronic health conditions that affect circulation.
Key risk factors include:
- Immobility: Individuals confined to a bed or wheelchair are at the highest risk.
- Poor Nutrition and Dehydration: A diet lacking in protein, calories, vitamins, and fluids can compromise skin health.
- Incontinence: Prolonged exposure to moisture can make skin more vulnerable to breakdown.
- Medical Conditions: Diseases like diabetes and vascular disease that affect blood flow increase risk.
- Lack of Sensory Perception: Conditions that cause a loss of sensation, like spinal cord injuries or neurological disorders, prevent a person from feeling the discomfort that signals a need to move.
The Four Pillars of Pressure Ulcer Prevention
Fortunately, with proactive care, the vast majority of pressure ulcers can be avoided. Prevention strategies revolve around four key areas: repositioning, skin care, nutrition, and the use of support surfaces.
1. Consistent Repositioning and Movement
Relieving pressure is the single most important step in prevention. Constant pressure on bony prominences—such as the tailbone, hips, heels, elbows, and shoulder blades—is the primary cause of these wounds.
- In Bed: An individual who is bed-bound should have their position changed at least every two hours. Using pillows or foam wedges can help maintain positions and prevent sensitive areas like ankles and knees from pressing against each other. When lying on one's side, it's best to avoid lying directly on the hip bone.
- In a Chair or Wheelchair: Those who are seated should be encouraged to shift their weight every 15-30 minutes if possible. If they are unable, they should be repositioned by a caregiver at least once every hour. The pressure on the skin is greater when sitting, making frequent changes crucial.
- Proper Technique: When repositioning, it's vital to lift the person rather than dragging them. Dragging causes friction and shear, where the skin is pulled in one direction while the underlying bone moves in another, stretching and tearing cell walls and tiny blood vessels.
2. Meticulous Skin Inspection and Care
A daily routine of skin care and inspection is essential for catching early warning signs before they escalate.
- Inspect Daily: The entire body should be checked at least once a day for early signs of damage. Pay close attention to bony areas. Warning signs include red or discolored patches that do not fade when pressure is removed, warmth, swelling, or hardness.
- Keep Skin Clean: Clean the skin promptly after any soiling, especially from incontinence. Use a mild soap and warm (not hot) water.
- Pat, Don't Rub: After cleaning, gently pat the skin dry. Rubbing can cause friction and damage fragile skin.
- Moisturize: Apply moisturizers to prevent the skin from becoming too dry and cracking.
- Manage Moisture: If incontinence is an issue, use absorbent pads or briefs that wick moisture away from the skin. A barrier cream can also be applied to protect the skin from urine and stool.
3. Optimizing Nutrition and Hydration
Healthy skin is more resilient and better able to withstand damage and repair itself. Good nutrition and hydration are the building blocks of healthy skin.
- Protein: Adequate protein is critical for tissue building and repair. Good sources include meat, poultry, fish, eggs, dairy products, beans, and nuts.
- Vitamins and Minerals: Vitamin C and zinc are particularly important for wound healing. Citrus fruits, tomatoes, and green vegetables are rich in Vitamin C, while meat, seafood, and whole grains are good sources of zinc.
- Calories: The body needs enough energy from calories to maintain healthy tissue and support healing processes.
- Hydration: Drinking plenty of water is vital for maintaining skin elasticity and overall circulation. Aim for 6-8 glasses of water a day unless a doctor advises otherwise.
4. Choosing the Right Support Surfaces
Specialized cushions, mattresses, and pads are designed to redistribute pressure over a larger surface area, reducing the intense pressure on bony prominences.
Support Surface Type | Description | Best For | Key Consideration |
---|---|---|---|
Static Foam | Mattresses or overlays made of high-density foam. | General prevention for at-risk individuals. | Cost-effective, but may not be sufficient for high-risk individuals. |
Static Air/Gel | Overlays or cushions filled with air or gel that conform to the body. | Moderate risk; individuals in wheelchairs. | Provides better pressure redistribution than standard foam. |
Alternating Pressure | A powered mattress with air cells that cyclically inflate and deflate to shift pressure points. | High-risk individuals; treatment of existing ulcers. | Actively and frequently changes pressure points without manual repositioning. |
Low Air Loss | A powered mattress that distributes body weight over a large area while circulating air to manage skin temperature and moisture. | Very high-risk individuals; those with existing ulcers or moisture issues. | Helps keep the skin dry and cool, reducing another key risk factor. |
For more detailed guidance on specific conditions, the National Institute on Aging provides valuable resources for patients and caregivers.
Conclusion: A Proactive and Collaborative Effort
Preventing pressure ulcers is a critical aspect of senior care that requires a consistent and proactive approach. It is not a passive task but an active collaboration between the individual, caregivers, and healthcare providers. By focusing on the four pillars—frequent repositioning, diligent skin care, proper nutrition, and the use of appropriate support surfaces—it is possible to protect against these painful and dangerous wounds, ensuring better health, comfort, and quality of life for the elderly.