Geriatric Pdf Download

[Blanchefle Strycker]

Sincemost medical care is devoted to those over 65, geriatrics, the medical treatment of the elderly, is a highly important specialty. The specific problems of the elderly include physical inactivity and instability, which result from weakness and loss of energy. Weakness of the eyes and ears plays a role, and weakening of the immune system often leads to more disease. All these conditions can be made worse by mental problems, such as declining intellectual activity, declining memory, and depression, which may prevent the patient from taking action to improve his or her condition. But the effects of aging can be greatly relieved by proper care. And the greatest improvement often results when the patient is persuaded to become more physically, mentally, and socially active.

Geriatrics, or geriatric medicine,[1] is a medical specialty focused on providing care for the unique health needs of the elderly.[2] The term geriatrics originates from the Greek γέρων geron meaning "old man", and ιατρός iatros meaning "healer". It aims to promote health by preventing, diagnosing and treating disease in older adults.[3] There is no defined age at which patients may be under the care of a geriatrician, or geriatric physician, a physician who specializes in the care of older people. Rather, this decision is guided by individual patient need and the caregiving structures available to them. This care may benefit those who are managing multiple chronic conditions or experiencing significant age-related complications that threaten quality of daily life. Geriatric care may be indicated if caregiving responsibilities become increasingly stressful or medically complex for family and caregivers to manage independently.[4]

There is a distinction between geriatrics and gerontology. Gerontology is the multidisciplinary study of the aging process, defined as the decline in organ function over time in the absence of injury, illness, environmental risks or behavioral risk factors.[5] However, geriatrics is sometimes called medical gerontology.

Geriatric providers receive specialized training in caring for elderly patients and promoting healthy aging. The care provided is one largely based on shared-decision making and is driven by patient goals and preferences, which can vary from preserving function, improving quality of life, or prolonging years of life. A guiding mnemonic commonly used by geriatricians in the United States and Canada is the 5 M's of Geriatrics which describes mind, mobility, multicomplexity, medications and matters most to elicit patient values.[6]

It is common for elderly adults to be managing multiple medical conditions, or, multi-morbidity. Age-associated changes in physiology drive a compounded increase in susceptibility to illness, disease-associated morbidity, and death. Furthermore, common diseases may present atypically in elderly patients, adding further diagnostic and therapeutical complexity in patient care.

Geriatrics is highly interdisciplinary consisting of specialty providers from the fields of medicine, nursing, pharmacy, social work, physical and occupational therapy. Elderly patients can receive care related to medication management, pain management, psychiatric and memory care, rehabilitation, long-term nursing care, nutrition and different forms of therapy including physical, occupational and speech. Non-medical considerations include social services, transitional care, advanced directives, power of attorney and other legal considerations.

The decline in physiological reserve in organs makes the elderly develop some kinds of diseases and have more complications from mild problems (such as dehydration from a mild gastroenteritis). Multiple problems may compound: A mild fever in elderly persons may cause confusion, which may lead to a fall and to a fracture of the neck of the femur ("broken hip").

The presentation of disease in elderly persons may be vague and non-specific, or it may include delirium or falls. (Pneumonia, for example, may present with low-grade fever and confusion, rather than the high fever and cough seen in younger people.) Some elderly people may find it hard to describe their symptoms in words, especially if the disease is causing confusion, or if they have cognitive impairment. Delirium in the elderly may be caused by a minor problem such as constipation or by something as serious and life-threatening as a heart attack. Many of these problems are treatable, if the root cause can be discovered.

Elderly people require specific attention to medications. Elderly people particularly are subjected to polypharmacy (taking multiple medications) given their accumulation of multiple chronic diseases. Many of these individuals have also self-prescribed many herbal medications and over-the-counter drugs. This polypharmacy, in combination with geriatric status, may increase the risk of drug interactions or adverse drug reactions.[7] Pharmacokinetic and pharmacodynamic changes arise with older age, impairing their ability to metabolize and respond to drugs. Each of the four pharmacokinetic mechanisms (absorption, distribution, metabolism, excretion) are disrupted by age-related physiologic changes. For example, overall decreased hepatic function can interfere with clearance or metabolism of drugs and reductions in kidney function can affect renal elimination.[8] Pharmacodynamic changes lead altered sensitivity to drugs in geriatric patients, such as increased pain relief with morphine use.[9] Therefore, geriatric individuals require specialized pharmacological care that is informed by these age-related changes.

Geriatric syndromes[10] is a term used to describe a group of clinical conditions that are highly prevalent in elderly people. These syndromes are not caused by specific pathology or disease, rather, are a manifestation of multifactorial conditions affecting several organ systems. Common conditions include frailty, functional decline, falls, loss in continence and malnutrition, amongst others.[11]

Frailty is marked by a decline in physiological reserve, increased vulnerability to physiological and emotional stressors, and loss of function. This may present as progressive and unintentional weight loss, fatigue, muscular weakness and decreased mobility.[12] It is associated with increased injuries, hospitalization and adverse clinical outcomes.

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.[13][14] 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.[13]

Falls are the leading cause of emergency department admissions and hospitalizations in adults age 65 and older, many of which result in significant injury and permanent disability.[15] As certain risk factors can be modifiable for the purpose of reducing falls, this highlights an opportunity for intervention and risk reduction. Modifiable factors include:

Urinary incontinence or overactive bladder symptoms is defined as unintentionally urinating oneself. These symptoms can be caused by medications that increase urine output and frequency (e.g. anti-hypertensives and diuretics), urinary tract infections, pelvic organ prolapse, pelvic floor dysfunction, and diseases that damage the nerves that regulate bladder emptying.[16] Other musculoskeletal conditions affecting mobility should be considered, as these can make accessing bathrooms difficult.

Malnutrition and poor nutritional status is an area of concern, affecting 12% to 50% of hospitalized elderly patients and 23% to 50% of institutionalized elderly patients living in long-term care facilities such as assisted living communities and skilled nursing facilities.[17] As malnutrition can occur due to a combination of physiologic, pathologic, psychologic and socioeconomic factors, it can be difficult to identify effective interventions.[18] Physiologic factors include reduced smell and taste, and a decreased metabolic rate affecting nutritional food intake. Unintentional weight loss can result from pathologic factors, including a wide range of chronic diseases that affect cognitive function, directly impact digestion (e.g. poor dentition, gastrointestinal cancers, gastroesophageal reflux disease) or may be managed with dietary restrictions (e.g. congestive heart failure, diabetes mellitus, hypertension). Psychologic factors include conditions including depression, anorexia, and grief.[17]

Functional abilities, independence and quality of life issues are of great concern to geriatricians and their patients. Elderly people generally want to live independently as long as possible, which requires them to be able to engage in self-care and other activities of daily living. A geriatrician may be able to provide information about elder care options, and refers people to home care services, skilled nursing facilities, assisted living facilities, and hospice as appropriate.

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