# A nurse is assessing a patient's mobility status. Which assessment finding would be the most important indicator of the patient's functional mobility capacity? > source: MyMerci (mymerci.kr) > url: https://mymerci.kr/pages/nclex_q.php?qn_id=542657 > language: ko > subject: Fundamentals ## 문제 A nurse is assessing a patient's mobility status. Which assessment finding would be the most important indicator of the patient's functional mobility capacity? ## 보기 1. Range of motion measurements in all joints 2. Muscle strength grading using the 0-5 scale 3. Balance assessment using standardized tests 4. Ability to perform activities of daily living independently **✔ 정답** **정답: 4** ## 해설 Functional mobility capacity is best assessed through independent ADL performance, as it integrates all mobility components in real-world situations. Other options measure individual components but do not reflect overall functional ability. ## 심화 해설 Key Concept: Functional Mobility Assessment When assessing a patient's mobility status, the most important indicator of functional mobility capacity is the ability to perform activities of daily living (ADLs) independently. While range of motion, muscle strength, and balance are foundational components of movement, they are individual body function and structure measures. In contrast, ADL performance represents the integration of these components into purposeful, real-world tasks, reflecting the patient's actual functional capacity at the activity and participation level. The rationale for prioritizing ADL performance is deeply rooted in the understanding of aging and rehabilitation outcomes. Aging is described as a multifactorial process leading to a gradual decline in mental and physical function, which directly impacts the ability to perform daily living activities and health-related quality of life [2]. This establishes a direct line from physiological decline to functional consequence. Therefore, a measurement that captures this consequence—the ability to perform self-care—is the most clinically meaningful endpoint. A patient can have full passive range of motion and grade 5 muscle strength in a controlled bedside test, yet be unable to safely transfer to a toilet or dress themselves due to deficits in coordination, cognition, or dynamic balance that only emerge during task performance. Furthermore, the link between physical performance and fatigability underscores the superiority of functional assessment. Research on community-dwelling older adults demonstrates that the velocity and pattern of a demanding, device-based functional task like a sit-to-stand (STS) transition are associated with physical fatigability and overall functioning [3]. A single-point strength measurement does not reveal how a patient's performance degrades with repeated effort throughout the day. Observing a patient's ability to perform a series of ADLs provides insight into their endurance, energy conservation, and the real-world impact of conditions like frailty and sarcopenia, which are key predictors of variable functional recovery after major procedures like joint arthroplasty [1]. The complexity of ADL performance is highlighted in stroke rehabilitation, where predicting independent dressing requires analyzing a hierarchy of interrelationships among motor function, cognitive function, and the specific skill and speed of the task . This demonstrates that successful ADL completion is not simply the sum of isolated impairments. A patient may have sufficient muscle strength (motor function) but fail at dressing due to hemi-neglect (cognitive function) or apraxia (motor planning). The functional task of dressing inherently tests all these domains simultaneously. For the NCLEX-RN, this means the nurse's assessment must culminate in observing the patient's ability to integrate these systems to perform self-care, as this is the most accurate predictor of discharge readiness, safety, and the need for rehabilitation services [2,4].References (research sources) - [1]Frailty and Sarcopenia as Predictors of Functional Recovery After Total Hip and Knee Arthroplasty: A Narrative Review.Research articleHung M, Jensen A, Strickler I, Vu S, Hon ES, Arapovic A, El-Othmani MM. (2026) · DOI: 10.3390/jcm15103578 - [2]Health gains from rehabilitation programs implemented by nurses for older people with impaired mobility and self-care deficit: A scoping review.Research articleAlves E, Ramos A, Pereira P, Lopes M, Fonseca C. (2026) · DOI: 10.1016/j.ijnsa.2026.100484 - [3]Does sit-to-stand transition velocity vary across the day? Association with physical functioning and fatigability in community-dwelling older adults.Research articleLöppönen A, Karavirta L, Rantakokko M, Lindeman K, Delecluse C, Van Roie E, Rantanen T, Palmberg L. (2026) · DOI: 10.1093/geroni/igag040 ## 임상 시나리오 Clinical Practice Guidance: Functional Mobility Assessment Core Principle: The primary goal of a mobility assessment is to determine a patient's ability to safely perform activities of daily living (ADLs) in their own environment. Isolated impairment measures like strength or range of motion are foundational data points, but they do not constitute a functional assessment on their own. Assessment Workflow - Step 1: Screen for Functional Decline. Use a validated tool such as the Katz Index of Independence in Activities of Daily Living or the Barthel Index. Ask the patient and caregiver about changes in bathing, dressing, toileting, transferring, continence, and feeding. - Step 2: Observe Task Performance. Do not rely solely on reported ability. Directly observe the patient performing a key task, such as rising from a chair, walking to the bathroom, and simulating a transfer. Note the quality, speed, and safety of the movement. - Step 3: Deconstruct the Deficit. If an ADL task is impaired, then perform specific component assessments (e.g., timed up and go test for dynamic balance, manual muscle testing for focal weakness) to identify the root cause and target interventions. Key Clinical Pearls - Integration over Isolation: A patient with 5/5 muscle strength in all groups can still be a high fall risk if they have impaired executive function or proprioceptive deficits that only become apparent during complex, dual-task activities. - Environmental Context is Critical: Functional mobility is not just about the patient's body; it is the interaction between the person, the task, and the environment. A hospital room assessment may not predict safety at home with rugs, poor lighting, or narrow doorways. - Fatigability Matters: Assess for a performance decrement over time. A patient who can walk independently for 2 minutes may become significantly unstable after 10 minutes of activity, which directly impacts their capacity for shopping or meal preparation. Documentation and Interprofessional Communication Document functional status using standardized language. Instead of charting "muscle strength 4/5 in bilateral lower extremities," link it to function: "Patient requires minimal assistance to stand from chair due to quadriceps weakness, limiting independent toileting." This framing directly informs discharge planning and the need for physical or occupational therapy referrals. ## 핵심 개념 - **Activities of Daily Living (ADLs)** — Basic self-care tasks such as bathing, dressing, toileting, transferring, continence, and feeding that are essential for independent living. - **Functional Mobility** — The capacity of a person to move around and perform tasks in their environment, integrating physical, cognitive, and environmental factors. - **Body Function and Structure** — Physiological and anatomical parts of the body; impairments at this level (e.g., muscle weakness) do not always predict activity limitations. - **Activity and Participation Level** — The execution of a task or action by an individual and their involvement in a life situation, representing the highest level of functional outcome. ## 같은 주제 문제 - [A nurse is assessing a patient who has been on bed rest for 5 days following abdominal sur…](https://mymerci.kr/pages/nclex_q.php?qn_id=542658) - [A nurse is caring for a client who has been on bed rest for 5 days following abdominal sur…](https://mymerci.kr/pages/nclex_q.php?qn_id=542659) - [A nurse is caring for a client with left-sided weakness following a stroke. 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