Lecture Week 1: Older Persons & Infection Control Flashcards
What are the 3 life-stage subgroups of the older adult population?
The young old: ~65-74
The middle old: 75-84
The old old: 85+
What is geriatrics?
Medical specialty focused on the elderly
What is primary aging?
= “Aging well”
Being able to live life fully and perform ADLs
What is secondary aging?
Aging faster, impacted by comorbidities, and often requiring assistance
What impacts life expectancy?
Canada: 81.3 years
>80: wealth, diet, education, healthcare
<60: HIV/AIDS, public health, medical care, diet
Why are the number of older persons growing in Canada?
Increased life expectancy
- Medical advancements
- Better treatment for chronic disease
What is the best way to describe the majority of the aging Canadian population?
2) Aging baby boomers (born between 1946-1964)
What are the normal changes with aging?
- Retirement (income)
- Social isolation (retirement, death of loved ones, hospitalization, etc)
- Elder abuse (neglect, financial abuse, caregiver abuse)
- Sexuality (loss of function, cognitive ability, independence)
- Housing and environment (moving into assisted living / LTC, loss of possessions)
- Death
- Sense of usefulness (no job, busy family)
- Body appearance and function (grey hair, wrinkles, comorbidities related to function, vertebral curvature)
What is health/healthy?
Defined differently between different people and cultures; subjective
- Capability
- Emotional and spiritually well
Only 23% of older adults define their health as poor
What is quality of life?
- Related to definition of health
- Associated with ADL, autonomy and mobility
What are the neurological affects of aging on the brain?
- Decrease in brain weight and volume
- Decrease in white matter
- Ventricular system enlarges
- Brain generates fewer neurotransmitters
What are common misconceptions about the affects of aging on the brain?
- Cognitive impairment
- Disorientation
- Loss of language
-Inability to calculate - Poor judgement
- Forgetfulness
- Not able to use computers
-Not able to learn - Rigid
What are the affects of aging on the integumentary system?
- Dryer skin
- Less production of oils
- Increased chance of infection and skin tear
What are the affects of aging on the musculoskeletal system?
- Bone mass starts to decrease
- Osteoblast cells activity declines but osteoclast activity continues
- Bones may break more easily and do not repair well
- More susceptible to injury
What are common misconceptions about the musculoskeletal function of older adults?
- Disabled
- Functionally dependent and slow
What are the affects of aging on the cardiovascular system?
- Heart failure
- Increased risk for injury
- Changes due to diet and activity
What are the affects of aging on the respiratory system?
- Less muscles
- Increased risk for pneumonia
- Respiratory disease
- Enlarged alveoli and alveolar ducts
- Changes due to smoking
What are the affects of aging on the gastrointestinal and genitourinary system
Effects of aging on the gastrointestinal and genitourinary systems:
- Increased risk of disease
Mouth and Nose:
Reduction in sense of taste and smell
Difficulty swallowing
Gum recession
Esophagus:
Esophageal sphincters lose tension
Esophageal peristalsis decreases
Liver:
Reduced ability to detoxify substances including drugs
Changes in bite constitution
Liver shrinks due to loss of hepatocytes
Large Intestine:
Decline in cell division and lining repair of large intestine
Peristalsis slows down
Changes in microbial fauna
Changes in DNA of epithelial cells
Stomach:
Stomach wall elasticity reduction
Decreased bicarbonate production and gastric mucosal protection
Delayed gastric emptying
Pancreas:
Decreased secretion of pancreatic protease and lipase
Small Intestine:
Compromised gut associated lymphoid tissue capacity
What are the effects of aging on the sensory system of older adults?
Effects of aging on senses:
- Iris fades
-Cornea less sensitive
- Pupil shrinks
-Lens become yellowed and clouded
- Thickened eardrum
-Cataract and Presbycusis
What are the common misconceptions on the sensory system of the aging adult?
Misconceptions:
- Disabled
- Cannot hear or see
- Boring
What are the common misconceptions about the reproductive and endocrine systems?
- Unattractive
- Uninterested in sex or sexual activity
What are the effects of aging on the reproductive system?
- Less functional reproductive organs
- Concern for STDs
What are the effects of aging on the immune system?
Neurological
Endocrine
Respiratory
Cardiovascular
GI/GU
Normal defenses are decreased as we age, further increasing risk of infection
What are the leading causes of death in older persons?
Cancer and heart disease
- 41.8% of all deaths in the older adult