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Geriatric Assessment – Definition and Components

The Geriatric Assessment is a comprehensive evaluation tool used to assess the physical, cognitive, psychological, and social health of older patients.

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The Geriatric Assessment is a comprehensive evaluation tool used to assess the physical, cognitive, psychological, and social health of older patients.

What is a Geriatric Assessment?

The Geriatric Assessment – often referred to as the Comprehensive Geriatric Assessment (CGA) – is a structured, multidimensional diagnostic process designed specifically for older adults. Unlike a standard medical examination, it goes beyond identifying individual diseases and evaluates a patient´s functional abilities, cognitive status, mental health, nutritional state, and social circumstances. The ultimate goal is to develop a personalized care and treatment plan tailored to the needs of older individuals.

Geriatrics – the medical specialty dedicated to the health of older people – relies heavily on this type of assessment because older patients often suffer from multiple simultaneous conditions (multimorbidity) and their care needs extend well beyond what a single diagnosis can capture.

Why is the Geriatric Assessment Important?

As people age, everyday abilities such as walking, dressing, or preparing meals may become more difficult. At the same time, cognitive changes, depression, or social isolation can develop. Standard medical examinations often fail to capture these dimensions adequately. The Geriatric Assessment bridges this gap and helps to:

Identify functional limitations early
Assess fall risk
Detect cognitive impairment
Determine care needs
Plan targeted rehabilitation
Improve overall quality of life

Components of the Geriatric Assessment

The Geriatric Assessment consists of several standardized tests and rating instruments covering different areas of life:

Functional Capacity

This evaluates the ability to perform daily activities independently. Commonly used tools include:

Barthel Index: Rates basic activities of daily living such as eating, bathing, mobility, and continence on a point scale.
Instrumental Activities of Daily Living (IADL) scale by Lawton and Brody: Assesses more complex tasks such as using the telephone, shopping, cooking, and managing medications.

Cognitive Function

Standardized tests are used to evaluate mental performance:

Mini-Mental State Examination (MMSE): A widely used test assessing memory, language, orientation, and arithmetic ability.
Montreal Cognitive Assessment (MoCA): A more sensitive tool for detecting early cognitive decline.
Clock Drawing Test: A simple drawing task used to evaluate planning and visuospatial skills.

Mental Health

Depression is frequently underdiagnosed in older adults. The Geriatric Depression Scale (GDS) is a self-rating questionnaire commonly used to screen for depressive symptoms in this population.

Mobility and Fall Risk

Falls are one of the most common causes of injury in older adults. Assessment tools include:

Timed Up and Go Test (TUG): Measures the time needed to stand up from a chair, walk three metres, turn around, and sit back down.
Tinetti Test: Evaluates gait and balance.

Nutritional Status

Malnutrition is prevalent among older adults and can significantly impair recovery. The Mini Nutritional Assessment (MNA) is a validated tool used to screen and assess nutritional status.

Social Situation and Environment

Living arrangements, social networks, and available support structures are also evaluated, as they have a major influence on health outcomes and the ability to live independently.

How is the Geriatric Assessment Conducted?

The assessment is typically carried out by an interdisciplinary team that may include physicians, nurses, physiotherapists, occupational therapists, and social workers. It takes place in hospital settings, day clinics, or outpatient geriatric facilities.

The process often begins with a brief geriatric screening to determine whether a full assessment is needed. If the screening indicates a need, the various test domains are systematically administered and the results are compiled into a comprehensive clinical profile.

Outcomes and Consequences

Based on the assessment results, an individualized treatment and care plan is developed. This plan may include:

Initiation of targeted rehabilitation therapy
Medication review and adjustment (e.g., reducing inappropriate medications)
Provision of assistive devices (e.g., walkers, grab rails)
Organization of home care or nursing services
Referral to social support and community services

References

Stuck AE et al. (1993): Comprehensive geriatric assessment: a meta-analysis of controlled trials. The Lancet, 342(8878), 1032–1036.
Ellis G et al. (2017): Comprehensive geriatric assessment for older adults admitted to hospital. Cochrane Database of Systematic Reviews, Issue 9.
Mahoney FI, Barthel DW (1965): Functional evaluation: the Barthel Index. Maryland State Medical Journal, 14, 61–65.

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