Common tests and scales for fall risk assessment
Nurses utilize a variety of evidence-based tools to assess a patient's risk of falling, especially when a chronic illness may affect mobility, balance, or cognitive function. The selection of a specific test is often tailored to the patient's individual needs and the clinical setting, such as a hospital, long-term care facility, or home care environment. A combination of tests may be used for a more comprehensive evaluation.
Morse Fall Scale (MFS)
The Morse Fall Scale is a widely-used and quick assessment tool, particularly in acute care settings. It uses a simple scoring system based on six clinical variables to classify a patient's risk as low, moderate, or high.
Components evaluated by the MFS:
- History of falling within the last three months (Yes/No)
- Secondary diagnosis (multiple medical conditions increase risk)
- Ambulatory aid (e.g., uses a cane, walker, or relies on furniture)
- IV therapy or heparin lock
- Gait status (e.g., normal, weak, or impaired)
- Mental status (e.g., oriented to own ability versus forgetting limitations)
Timed Up and Go (TUG) Test
The Timed Up and Go (TUG) test is a simple and quick performance-based assessment that measures a person's mobility and balance. It is an excellent screening tool for fall risk in older adults and those with chronic conditions like Parkinson's disease, multiple sclerosis, and stroke.
TUG test procedure:
- The patient sits in a standard armchair.
- On the command "go," the patient stands up.
- The patient walks three meters (about 10 feet) at their normal pace.
- They turn around, walk back to the chair, and sit down.
- The nurse times the task from the command "go" to when the patient is seated again.
A time of 12 seconds or more generally indicates a high risk for falls.
Berg Balance Scale (BBS)
The Berg Balance Scale is a more detailed, 14-item performance-based assessment that evaluates both static and dynamic balance. It is particularly useful for identifying balance deficits in patients with neurological conditions or other chronic illnesses impacting stability. The test takes longer to administer than the TUG, but provides a comprehensive picture of a patient's balance abilities.
CDC's STEADI Initiative
The Centers for Disease Control and Prevention's (CDC) STEADI (Stopping Elderly Accidents, Deaths, and Injuries) initiative provides a coordinated approach to fall prevention. It is a three-step process designed to help healthcare providers: Screen, Assess, and Intervene. The assessment phase of STEADI integrates various tools, including the TUG and others, to develop a multifactorial assessment.
Factors increasing fall risk in chronic illness
Chronic diseases can significantly increase the risk of falling through several mechanisms. Nurses must consider these underlying factors when interpreting assessment results and formulating care plans.
- Chronic Pain and Arthritis: Conditions like arthritis can cause joint stiffness, reduce range of motion, and decrease physical activity, all of which contribute to muscle weakness and poor balance.
- Neurological Conditions: Diseases such as Parkinson's, stroke, and multiple sclerosis directly impact balance, coordination, and gait through central nervous system dysfunction.
- Cardiovascular Conditions: Irregular heart rhythms, orthostatic hypotension (a drop in blood pressure upon standing), and other heart issues can cause dizziness or lightheadedness, leading to falls.
- Diabetes: Peripheral neuropathy can affect sensation in the feet, impairing balance. In addition, fluctuations in blood sugar can cause dizziness and weakness.
- Vision and Hearing Loss: Impaired vision affects a person's ability to navigate their environment, while hearing loss can impact balance.
- Medication Effects: Many medications used to treat chronic illnesses, including sedatives, diuretics, and blood pressure medications, can cause side effects like drowsiness, dizziness, or orthostatic hypotension. Polypharmacy (taking multiple medications) further compounds this risk.
Comparison of fall risk assessment tools
| Assessment Tool | Time to Administer | Key Strengths | Limitations | Ideal For | Scoring |
|---|---|---|---|---|---|
| Morse Fall Scale (MFS) | Very quick (< 3 mins) | Quick and easy to use; excellent for screening in busy acute settings. | Primarily relies on self-report and chart review; does not directly test mobility or balance. | Acute care and inpatient settings. | Numerical score classifies risk as low, moderate, or high. |
| Timed Up and Go (TUG) | Quick (< 1 min) | Simple, objective, and performance-based; easy to administer in various settings. | Can have varied results depending on the patient's effort; single-task assessment. | Screening in community, outpatient, and inpatient settings. | Time in seconds; ≥12 seconds indicates high risk. |
| Berg Balance Scale (BBS) | Moderate (15-20 mins) | Comprehensive assessment of static and dynamic balance. | Time-consuming; some items can be too challenging for high-risk patients, causing a "floor effect". | Evaluating progress in rehabilitation and neurological conditions. | Total score out of 56; lower scores indicate higher risk. |
| STEADI Initiative | Varies (multi-component) | Comprehensive, evidence-based program that integrates screening, assessment, and intervention. | Requires coordination and can be complex to implement fully. | Multifactorial risk assessment and long-term prevention programs. | Incorporates scores from multiple tests like TUG and includes medication review. |
Conclusion
For a patient with a chronic illness, a nurse would perform an individualized fall risk assessment, often starting with a quick and reliable tool like the Morse Fall Scale or the Timed Up and Go (TUG) test. The specific test chosen depends on the patient's condition and the clinical setting. The nurse’s role goes beyond initial testing to a multifactorial evaluation that considers the patient's medication regimen, chronic conditions, and environmental factors, in line with frameworks like the CDC's STEADI initiative. A comprehensive approach, incorporating physical performance tests and an in-depth review of risk factors, allows the nurse to create a personalized fall prevention plan to enhance patient safety and quality of life.
Nursing interventions and fall prevention
Upon identifying a patient's fall risk, the nurse's role expands to implementing targeted interventions to minimize hazards and promote safety. These interventions may include:
- Environmental modifications: Removing clutter, securing rugs, ensuring adequate lighting, and providing grab bars can help reduce trip hazards at home or in a healthcare facility.
- Medication management: Collaborating with physicians and pharmacists to review medications that may cause dizziness, sedation, or orthostatic hypotension.
- Therapeutic exercise: Referring patients to physical or occupational therapy for programs that build strength, improve balance, and enhance gait.
- Patient education: Educating the patient and their family about identified risks, proper use of mobility aids, and how to safely navigate their environment.
- Use of technology: Using bed alarms, pressure-sensitive floor mats, and wearable devices to monitor high-risk patients.
- Regular reassessment: Continuously monitoring the patient and reassessing their fall risk, especially after a change in medication, health status, or transfer to a different unit.
This multi-pronged approach helps to address the complex nature of fall risk in patients with chronic illnesses and emphasizes the nurse's central role in patient safety.