Geriatrics
Functional decline

Functional disability can arise from a decline in physical function and/or cognitive function. It is associated with an acquired difficulty in performing basic everyday tasks resulting in an increased dependence of other individuals and/or medical devices. These tasks are sub-divided into basic activities of daily living (ADL) and instrumental activities of daily living (IADL) and are commonly used as an indicator of a person's functional status.

Activities of daily living (ADL) are fundamental skills needed to care for oneself, including feeding, personal hygiene, toileting, transferring and ambulating. Instrumental activities of daily living (IADL) describe more complex skills needed to allow oneself to live independently in a community, including cooking, housekeeping, managing one's finances and medications. Routine monitoring of ADL and IADL is an important functional assessment used by clinicians to determine the extent of support and care to provide to elderly adults and their caregivers. It serves as a qualitative measurement of function over time and predicts the need for alternative living arrangements or models of care, including senior housing apartments, skilled nursing facilities, palliative, hospice or home-based care.
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