Understanding the Core Risk Factors
Understanding why a resident is vulnerable to pressure injuries is the first step in effective prevention. The underlying cause is prolonged, unrelieved pressure, but several factors exacerbate this risk, making certain individuals more susceptible.
Immobility
Limited mobility is one of the most significant risk factors. Residents who are confined to a bed or chair for long periods are unable to make the small, frequent position changes that naturally relieve pressure. This can be due to various conditions, including neurological impairments, recovery from surgery, or general weakness.
Lack of Sensory Perception
Nerves normally signal discomfort when pressure builds up, prompting a person to shift position. Conditions like diabetes, spinal cord injuries, or cognitive impairment (such as dementia) can decrease or eliminate this sensation. Without this crucial warning signal, a resident may not feel the need to move, leading to tissue damage.
Moisture and Incontinence
Excessive moisture on the skin, often from incontinence or perspiration, increases the risk of skin breakdown. Moist skin is more fragile and susceptible to friction and shear, accelerating the potential for injury. Proper incontinence management and diligent skin hygiene are essential for prevention.
Poor Nutrition and Hydration
Healthy skin requires proper nourishment. A resident with poor nutritional intake, particularly low protein, calories, vitamins, and minerals, is at higher risk for tissue breakdown and impaired wound healing. Dehydration can also negatively impact skin elasticity and overall health. A registered dietitian can help tailor nutritional plans for at-risk residents.
Medical Conditions Affecting Blood Flow
Underlying health issues that affect circulation, such as diabetes and vascular disease, can increase pressure injury risk. Impaired blood flow limits the oxygen and nutrients supplied to tissues, making them more vulnerable to damage from pressure. Additionally, older adults, particularly those over 70, are at a higher risk.
Leveraging Clinical Tools for Accurate Assessment
To formalize the assessment of risk, caregivers should use a structured, evidence-based tool in conjunction with their clinical judgment. These tools provide a standardized method for evaluating key risk factors.
The Braden Scale: A Comprehensive Tool
The Braden Scale is one of the most widely used and validated tools for predicting pressure injury risk. It assesses six key areas, with a lower total score indicating a higher risk. The scale should be completed upon a resident's admission and repeated regularly based on acuity.
The Six Braden Scale Subscales:
- Sensory Perception: Ability to respond meaningfully to pressure-related discomfort.
- Moisture: Degree to which skin is exposed to moisture.
- Activity: Degree of physical activity.
- Mobility: Ability to change and control body position.
- Nutrition: Usual food intake pattern.
- Friction and Shear: The amount of rubbing and sliding force on the skin.
The Crucial Role of Detailed Skin Assessment
In addition to using a risk assessment tool, a thorough and regular skin inspection is non-negotiable. Early signs of pressure injury can be subtle and require careful observation.
What to Look For During Inspection
- Non-Blanchable Redness: In lighter skin tones, look for a persistent red area over a bony prominence that does not turn white when gentle pressure is applied. This is a sign of underlying tissue damage.
- Discoloration in Darker Skin Tones: Redness may not be visible. Instead, look for persistent areas of purple, maroon, or darker pigmentation compared to the surrounding skin. Moistening the skin can help identify color changes more clearly.
- Temperature Changes: Palpate the skin for localized areas that feel warmer or cooler than the surrounding skin.
- Tissue Consistency: Feel for changes in tissue firmness. A firm, hard, or boggy area could indicate deep tissue injury.
- Pain or Tenderness: Always ask the resident if they feel any discomfort, pain, burning, or itching in a specific area, especially over bony areas.
- Existing Injuries: Note any prior history of pressure injuries, as a healed or existing pressure injury increases the risk of new ones.
Comparing Risk Assessment Tools
Feature | Braden Scale | Norton Scale |
---|---|---|
Subscales | Sensory Perception, Moisture, Activity, Mobility, Nutrition, Friction & Shear | Physical Condition, Mental Condition, Activity, Mobility, Incontinence |
Scoring Range | 6 to 23 (Lower score = higher risk) | 5 to 20 (Lower score = higher risk) |
Strengths | Comprehensive, widely-researched, includes specific friction/shear component | Broad initial screening, simple to use, focuses on five key risk factors |
Key Differences | Integrates friction and shear, a critical component of pressure injury etiology. | Uses broader categories and is one of the earliest tools developed for risk prediction. |
Creating a Proactive Prevention Plan
Once the risk has been identified, a targeted plan of care is crucial. Prevention is a multi-faceted approach that requires a consistent effort from all caregivers.
- Scheduled Repositioning: Following a regular turning and repositioning schedule is the most effective intervention. Aim for at least every two hours for bedbound residents and every hour for those in a wheelchair. Ensure heels are elevated off the bed with pillows or specialized devices.
- Use Appropriate Support Surfaces: Utilize pressure-redistributing mattresses, overlays, and chair cushions to reduce and redistribute pressure, particularly for high-risk residents.
- Optimize Nutrition and Hydration: Monitor fluid and food intake and consult a dietitian if malnutrition is a concern. Ensure sufficient protein, vitamins, and calories to support skin integrity.
- Maintain Skin Integrity: Keep skin clean and dry, especially after incontinence episodes. Use pH-balanced cleansers and apply moisturizing creams and skin protectants as needed. Avoid aggressive scrubbing.
- Educate Staff and Family: All care team members and family should be trained on the importance of pressure injury prevention, proper assessment techniques, and early warning signs.
- Regularly Check Medical Devices: Inspect the skin under and around medical equipment for any signs of irritation or pressure, as these can be a source of injury.
Conclusion: Prioritizing Proactive Care
Identifying if a resident is at risk for pressure injury is a fundamental aspect of senior care that demands a proactive, systematic approach. Combining the use of validated assessment tools, such as the Braden Scale, with consistent, attentive skin inspections is key. By understanding the core risk factors—immobility, compromised sensation, moisture, and poor nutrition—caregivers can implement targeted preventative strategies. A comprehensive care plan that includes repositioning, appropriate support surfaces, proper skin care, and nutritional support can significantly reduce the risk and ensure the resident's skin health and overall well-being. Regular education for all care staff and collaboration with residents and families further strengthens prevention efforts. For more information on causes and symptoms, visit the Mayo Clinic website.