Lecture Week 1: Older Persons & Infection Control Flashcards

1
Q

What are the 3 life-stage subgroups of the older adult population?

A

The young old: ~65-74
The middle old: 75-84
The old old: 85+

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2
Q

What is geriatrics?

A

Medical specialty focused on the elderly

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3
Q

What is primary aging?

A

= “Aging well”
Being able to live life fully and perform ADLs

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4
Q

What is secondary aging?

A

Aging faster, impacted by comorbidities, and often requiring assistance

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5
Q

What impacts life expectancy?

A

Canada: 81.3 years
>80: wealth, diet, education, healthcare
<60: HIV/AIDS, public health, medical care, diet

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6
Q

Why are the number of older persons growing in Canada?

A

Increased life expectancy

  • Medical advancements
  • Better treatment for chronic disease
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7
Q

What is the best way to describe the majority of the aging Canadian population?

A

2) Aging baby boomers (born between 1946-1964)

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8
Q

What are the normal changes with aging?

A
  • 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)
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9
Q

What is health/healthy?

A

Defined differently between different people and cultures; subjective
- Capability
- Emotional and spiritually well

Only 23% of older adults define their health as poor

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10
Q

What is quality of life?

A
  • Related to definition of health
  • Associated with ADL, autonomy and mobility
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11
Q

What are the neurological affects of aging on the brain?

A
  • Decrease in brain weight and volume
  • Decrease in white matter
  • Ventricular system enlarges
  • Brain generates fewer neurotransmitters
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12
Q

What are common misconceptions about the affects of aging on the brain?

A
  • Cognitive impairment
  • Disorientation
  • Loss of language
    -Inability to calculate
  • Poor judgement
  • Forgetfulness
  • Not able to use computers
    -Not able to learn
  • Rigid
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13
Q

What are the affects of aging on the integumentary system?

A
  • Dryer skin
  • Less production of oils
  • Increased chance of infection and skin tear
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14
Q

What are the affects of aging on the musculoskeletal system?

A
  • 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
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15
Q

What are common misconceptions about the musculoskeletal function of older adults?

A
  • Disabled
  • Functionally dependent and slow
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16
Q

What are the affects of aging on the cardiovascular system?

A
  • Heart failure
  • Increased risk for injury
  • Changes due to diet and activity
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17
Q

What are the affects of aging on the respiratory system?

A
  • Less muscles
  • Increased risk for pneumonia
  • Respiratory disease
  • Enlarged alveoli and alveolar ducts
  • Changes due to smoking
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18
Q

What are the affects of aging on the gastrointestinal and genitourinary system

A

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

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19
Q

What are the effects of aging on the sensory system of older adults?

A

Effects of aging on senses:
- Iris fades
-Cornea less sensitive
- Pupil shrinks
-Lens become yellowed and clouded
- Thickened eardrum
-Cataract and Presbycusis

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20
Q

What are the common misconceptions on the sensory system of the aging adult?

A

Misconceptions:
- Disabled
- Cannot hear or see
- Boring

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21
Q

What are the common misconceptions about the reproductive and endocrine systems?

A
  • Unattractive
  • Uninterested in sex or sexual activity
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22
Q

What are the effects of aging on the reproductive system?

A
  • Less functional reproductive organs
  • Concern for STDs
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23
Q

What are the effects of aging on the immune system?

A

Neurological
Endocrine
Respiratory
Cardiovascular
GI/GU

Normal defenses are decreased as we age, further increasing risk of infection

24
Q

What are the leading causes of death in older persons?

A

Cancer and heart disease
- 41.8% of all deaths in the older adult

25
Define Presbycusis (pres-bu-cusis),
Age-related hearing loss (presbycusis) is the slow loss of hearing in both ears. It’s a common problem linked to aging. About 1 in 3 adults between the ages of 65 and 74 have hearing loss. This hearing loss happens slowly. So some people are not aware of the change at first. Most often, it affects the ability to hear high-pitched noises, such as a phone ringing or a microwave beeping. The ability to hear low-pitched noises is often not affected. - hearing aids can be used to improve hearing
26
Define Tinnitus
Tinnitus is when you experience ringing or other noises in one or both of your ears. The noise you hear when you have tinnitus isn't caused by an external sound, and other people usually can't hear it. Tinnitus is a common problem. It affects about 15% to 20% of people, and is especially common in older adults.
27
Define Macular degeneration- (retinal degeneration).
Progressive eye disease - Macular degeneration is a progressive eye disease that affects the central part of the retina called the macula123. It is the leading cause of vision loss in people over 402. The condition causes damage to the retina and leads to blurred vision
28
What are chronic diseases?
- Noncommunicable – not transmitted from one person to another - Persistent and generally slow in progression - Cannot be cured ex. COPD, diabetes, parkinson’s, etc
29
What is ageism?
Discrimination based on the age of the person - Our society values attractiveness, energy, youth = undervaluing older persons
30
What is the role of the nurse in the care of older people? What should they do / recognize? - in terms of ageism
Nurses need to recognize and address ageism: By questioning and prevailing negative attitudes and stereotypes By advocating for older persons Nurses must treat older persons as independent, dignified persons Encourage independence, autonomy Advocate Give time and space No baby talk
31
What is an age-specific approach for old people?
Use an age-specific approach: Physical and psychosocial changes on ageing Effects of disease and disability on function Decreased homeostasis Lack of standards for norms of health and wellness Altered response and manifestations of disease Be aware of atypical presentation
32
What are the normal defenses against infectino?
Normal flora Body system defenses - lysosome in tears and other secretions - mucus lining trachea - rapid change in pH in the gut - flushing of urinary tract - vaginal acids - commensals (normal flora) - intact skin, fatty acids, commensals - removal of particles by cilia in nasopharynx
33
34
What is inflammation?
: vascular and cellular responses Inflammatory exudate Tissue repair Damaged cells + histamine release Heat, redness, swelling, tenderness, pain
35
Who is at greatest risk for infection?
Age: very young and older persons Nutritional status (eating healthy) Stress (weakened immune response) Disease processes - Immune system - Chronic disease Medical therapy - Meds that suppress the immune system
36
What are the (4) stages of infection?
1. Incubation - Pathogen enters the body, no symptoms present 2. Prodromal - Mild or non-specific signs and symptoms are present (transmission may occur) - First symptom 3. Illness - Specific signs and symptoms present 4. Convalescence - Acute symptoms disappear - homeostasis body replenishes - time depends on severity
37
Establishment of infection: what is a localized infection?
an infection that is limited to a specific part of the body and has local systems
38
Establishment of infection: what is a systemic infection?
pathogen is distributed throughout the body
39
What are the cardinal signs and symptoms of LOCAL inflammation/infection?
- Heat - Redness - Swelling - Pain - Immobility Other signs and symptoms may be dependent to the affected site or system
40
What are the signs and symptoms of a systemic inflammation?
Source of infection Blood work needed Blood cultures Lactate (>4) Sepsis screening Assessment findings: always consider comorbidities Does patient have any 2 of the following: - HR greater than 90/min - RR greater than 20/min - Temp greater or equal to 38 or less than 36 - altered mental status / GCS change - WBC greater than 12 or less than 4 x10/L AND Does the patient have a confirmed or suspected source of infection or any of these symptoms: - looks unwell - 65+ years old - recent surgery - immunocompromised - chronic illness if yes > patient may have sepsis
41
What is sepsis?
Sepsis is a serious condition in which the body responds improperly to an infection, causing the organs to work poorly.
42
What are the signs and symptoms of infection in the older adult?
Older adults may not show typical signs and symptoms; - Mental status changes (delirium) - Falls -Dehydration - Decreased appetite - Loss of function / incontinence - Mental capacity - Speech - Abilities - Dizziness
43
What are HAIs?
Healthcare acquired illness; Infections acquired during the stay in healthcare - was not incubating upon admission commonly affect: - Lungs (respiratory systems) - Surgical / open wounds - Urinary tract - Blood stream
44
How can we protect patients from infection?
- Routine practices (ex. performing hand hygiene) - Isolation precautions - Chain of infection
45
How can we protect the susceptible host?
Routine practices: apply to all HCW exposed or potentially exposed to Blood Body fluids (not sweat) Non-intact skin Mucous membranes Isolation precautions: apply to specific circumstances
46
What are endogenous infections?
Endogenous (infections beginning within the body - our own bacteria)
47
What are exogenous infections?
Exogenous (infections beginning outside the body - outside bacteria
48
What are ARO - MRSA infections
Antibiotic Resistant Organism - Methicillin-resistant Staphylococcus aureus : Antibiotic Resistant Organism (ARO) – microorganisms that have developed resistance to the action of several antimicrobial agents and that is of special clinical or epidemiological significance. MRSA: is a type of bacteria that’s resistant to many antibiotics and can cause skin and serious infections.
49
What is PPE? What are the different types?
Personal protective equipment: Routine practices Gown and gloves: contact precautions (Flu and C Diff.) Surgical mask/eye protection: droplet precautions (Flu) N95 Mask/eye protection: droplet precaution Full face protection: splash to the face
50
What is C diff?
C Diff : Contact+ precautions What is it? Diarrhea from bacteria What causes it? HAI- due to antibiotics How bad is it? Life threatening - Communicable - Increased risk in the older adult - Increased risk with those with co- morbidities.
51
What is flu?
Flu : Droplet/contact precautions What is it? Respiratory illness What causes it? Virus - nose, throat, lungs How bad is it? Mild to severe (can also be deadly – especially to those that are high risk) - Communicable - Increased risk in the older adult - Increased risk with those with co- morbidities.
52
What is the chain of infection?
The chain of infection, also referred to as the chain of transmission, describes how an infection spreads based on these six links of transmission: (1) Infectious Agent – the pathogen causing disease (e.g., bacteria, viruses); (2) Reservoir – where the pathogen lives (e.g., humans, animals, surfaces); (3) Portal of Exit – how the pathogen leaves the source (e.g., coughing, bodily fluids); (4) Mode of Transmission – how it spreads (e.g., direct contact, droplets, vectors); (5) Portal of Entry – how it enters a new host (e.g., inhalation, breaks in the skin); (6) Susceptible Host – a person vulnerable to infection (e.g., elderly, immunocompromised).
53
What is a foley catheter?
A tube that is inserted through the urethra and the bladder to help with drainage
54
How can you break the chain of infection?
(1) Eliminating the infectious agent through proper diagnosis, treatment, and disinfection; (2) Removing the reservoir by cleaning and sanitizing surfaces, properly storing food, and treating infections; (3) Blocking the portal of exit by covering coughs, using wound care, and disposing of waste properly; (4) Stopping transmission with hand hygiene, wearing PPE, and disinfecting objects; (5) Protecting the portal of entry by using masks, gloves, and maintaining skin integrity; (6) Strengthening the host's defenses through vaccination, proper nutrition, and a healthy lifestyle.
55
What is health promotion and maintenance?
- Focus on prevention - Consider individual needs -Promote independence - Stabilize chronic conditions - Not smoking - Encouraging vaccinations