Bonnie M. Wivell, MS, RN, CNS Chapter 6: Review of the Aging of Physiological Systems.
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Transcript of Bonnie M. Wivell, MS, RN, CNS Chapter 6: Review of the Aging of Physiological Systems.
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Bonnie M. Wivell, MS, RN, CNS
Chapter 6: Review of the Aging of Physiological Systems
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Heart chambers enlarge Thickening of heart walls
◦ Especially left ventricle◦ Decreased flexibility
Increase in heart weight Myocardial cells enlarge
◦ Men- decreased number of myocardial cells Heart muscle loses efficiency Reduced cardiac output under physiologic
stressors
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Arteries◦ Dilate and stiffen◦ Reduced elasticity◦ Atherosclerosis
Increased peripheral resistance◦ Hypertension◦ Positional hypotension
Decreased stimulation of the baroreceptors leads to impaired sympathetic nerve response and resistance in peripheral vessels
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Heart Valves◦ Calcium deposits accrue leading to stenosis
Murmurs◦ Asymptomatic
Blood Pressure◦ Systolic ↑ ◦ Diastolic ↓
Pulse◦ At rest vs. activity
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Alveoli◦ Flatter, shallow, decreased surface area◦ Decreased number of capillaries per alveolus◦ Impaired passage of oxygen from alveoli to the
blood Lung
◦ Decreased elastic recoil◦ Total lung capacity (total vol lungs can expand
during inspiration) remains unchanged◦ Vital capacity (max amt of air expelled with
exhalation) decreases◦ Lower lobes have lesser air flow hence decrease
gas exchange
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Chest wall◦ Stiffer reducing the ability to expand and contract◦ Loss of rib elasticity – calcification of cartilage◦ Kyphosis, arthritis of costavertebral joints and
increased rigidity of the thoracic cavity Increased anteroposterior diameter Flattening of the diaphragm
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Respiratory Infection◦ 25% of all deaths >85 years
Chronic Obstructive Pulmonary Disease◦ Chronic bronchitis, chronic obstructive bronchitis,
emphysema◦ Environmental irritants cause increased mucous◦ Alveoli always inflated become fibrous◦ Excessive cardiac workload as heart tries to
compensate Pneumonia
◦ Lung inflammation secondary to infection◦ Pneumococcal
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Mouth◦ Teeth less sensitive and more brittle
Loss is not a normal part of aging Dentures
◦ Difficult to chew with no teeth and atrophy of muscles and jaw bones
◦ Salivary glands Same amount as young Dry mouth secondary to medication
◦ Less acute taste sensation Increased risk for aspiration, indigestion,
constipation
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Esophagus & Pharynx◦ Normal until 80 years of age◦ Stiffening◦ Absent gag reflex in 40% of healthy older adults◦ Dysphagia◦ Reflux/Heartburn – longer duration of episodes
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Stomach ◦ Gastric acid changes
Decline in gastric defense mechanisms Increased potential for mucosal injury
Small intestines◦ Decreased acid production and motility
disturbances can lead to bacterial overgrowth causing malabsorption and malnutrition
◦ Vit A ↑◦ Vitamin D, calcium, zinc ↓◦ B1, B12, C, Iron unchanged
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Gastrointestinal System Large Intestine
◦ Medications can affect motility◦ Endocrine and neurological changes affect motility
Large intestine loses nerve connections in the smooth muscle of the colon, increasing colonic transit time
Liver◦ Decreased size and blood flow◦ Drug clearance can be affected but highly variable
Gallbladder◦ Slower emptying rate so less bile secreted when food
is digested◦ Increased bile volume can lead to gallstones
Pancreas◦ Decreases in weight◦ Some histological changes such as fibrosis and cell
atrophy
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Kidneys◦ Shrink in length and weight◦ Decreased glomeruli by 30-40%◦ Size and number of nephrons decrease◦ Decreased renal blood flow◦ Glomerular filtration rate decreased
Disease, medications can make this worse Elimination of waste and toxins declines Accumulation of harmful substances such as uric
acid and meds in the body Impaired sodium regulation can occur
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Bladder◦ Reduced capacity due to decreased size◦ Develops fibrous matter in wall reducing
stretching capacity and contractility◦ Decreased filling capacity ◦ Ability to withhold voiding declines◦ Increased incidence of detrusor overactivity◦ Urinary frequency, urgency, nocturia
Incontinence is not a normal part of aging
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Overall atrophy, including external structures Uterus tips backwards Vagina becomes shorter and narrower Loss of mucosal layers, decreased lubrication pH increases, more alkaline
◦ More infection, vaginitis Menopause
◦ Estrogen depletion◦ Average of 51 years (45-55 yo)◦ Hot flashes, mood disturbance, weight gain, vaginal
dryness, bladder infections, loss of sex drive, fatigue, insomnia, cognitive decline, hair loss, backaches, joint pain
Pelvic muscles atrophy causing decreased support of pelvic organs
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Reduction in testosterone and sperm count Erectile dysfunction
◦ Increased amount of time to achieve erection◦ Need more stimulation to maintain the erection◦ Less intense orgasms and ejaculation◦ Decreased ejaculatory volume◦ Longer refractory period
Benign prostatic hyperplasia (BPH)◦ Prostate around urethra at base of bladder◦ Enlargement◦ Urinary retention◦ Increased frequency, discomfort with urination,
bladder and kidney infections, erectile and ejaculatory dysfunction
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Andropause Androgen deficiency; occurs gradually and doesn’t
occur in all males Low libido Decreased energy, strength, and stamina Increased irritability Cognitive changes ED Osteopenia/osteoporosis Breast enlargement Decreased muscle mass Shrinkage of testes Increased fat deposition
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Decreased size and weight of brain◦ Ventricle size increases◦ Loss of neurons◦ Increased subdural space – risk of chronic
hematoma Personality remains consistent with that of
earlier years in the absence of disease Learning ability/attention span/memory
changes◦ Acetylcholine decreases ◦ Loss of acetylcholine pronounced in Alzheimer’s
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Nervous System Motor dysfunction due to decreased dopamine
receptors◦ Parkinson’s
Sleep changes/depression◦ Norepinephrine and serotonin decreases
Decreased cerebral blood flow Plaques and tangles are hallmarks of Alzheimer’s
disease Spine
◦ Narrowing◦ Changes in sensation◦ Degenerative disease
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Thyroid◦ Decreased activity◦ Decreased metabolic rate
Pineal gland◦ Decreased melatonin◦ Sleep patterns
Glucose Intolerance◦ Decreased tissue sensitivity to circulating insulin◦ Delayed and insufficient release of insulin◦ Reduced ability to metabolize glucose
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Sarcopenia: reduction in muscle mass◦ Functional disability and frailty
Osteoarthritis◦ Most common, affects weight bearing joints from years
of wear, loss of cartilage, increased bone matrix, decreased joint mobility
Rheumatoid arthritis◦ Immune
Osteoporosis◦ Reduction in bone quantity and strength
Tendons shrink and harden Increased risk of fractures
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Touch◦ Mechanoreceptors ◦ Inability to acknowledge that an object is touching
or applying pressure to the skin◦ Decrease in ability to identify where the touch or
pressure is occurring◦ Inability to distinguish how many objects are
touching the skin◦ Decreased ability to identify objects just by touch◦ Proprioception
Safety issues?
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Smell◦ Decreased ability to smell◦ Decreased odor detection◦ Inability to identify smells◦ Affects sense of taste
Safety issues? Affects on life?
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Taste◦ Chemoreceptors◦ Hypogeusia = decrease in taste◦ Medication, smoking, disease, infections, poor
oral health◦ Food poisoning and malnutrition of concern
Safety issues? Affects on life?
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Vision Presbyopia Narrowing of visual field Impaired color discrimination (blue/yellow) Decreased night vision Diseases, not normal aging process
◦ Cataracts, glaucoma, macular degeneration, diabetic retinopathy
Safety issues? Affects on life?
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Hearing Presbycusis
◦ Age related hearing loss Most common of all sensory deficits Safety issues? Affects on life?
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Decreased elasticity Thinning Increased dryness Fragile Wrinkles Decreased blood flow
◦ Cooler skin Subcutaneous layer increases around hips
and belly
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Hair◦ Thinning, loss, gray
Nails◦ Slower growth, thinner, more brittle
Glands◦ Decreased sweating
Safety issues? Affects on life?
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Depressed immune response T-cell activity declines
◦ Fewer naïve T-cells so respond slower to new antigens
Increased potential for infection Reactivation of dormant viruses
◦ Varicella zoster, mycobacterium tuberculosis Vaccinations good for this age but body
responds slower
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No significant changes with ages, unless disease mediated
Hct and Hgb unchanged Anemia
◦ Due to other disease processes, medications
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Lower normal body temperature◦ 96.9 degrees F - 98.9 degrees F
Reduced ability to respond to cold temperatures
Differences in response to heat
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Chapter 7: Assessment of the Older Adult
Bonnie M. Wivell, MS, RN, CNS
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Activities of Daily Living◦ Katz – distinguished between independence and
dependence in certain skills◦ Barthel Index – measures functional levels of
self-care and mobility◦ Refined ADL Assessment Scale – task
segmentation◦ Functional Independence measure (FIM) – used
in rehab◦ Eating, dressing, bathing/washing, grooming,
walking/ambulation, ascending/descending stairs, communication, transferring, toileting
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IADLs: more complex than ADL ◦ Lawton and Brody in 1969◦ Telephone, taking medications, shopping,
finances, preparing meals, laundry, housekeeping, yardwork, home maintenance, transportation, recreation
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Family and patient history Chest pain Medications (include OTC and herbs) Sources of stress Vital signs Heart sounds Other tests prn: CBC, Lytes, ECG, Echo,
Exercise stress test
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Family and patient history Shortness of breath – describe Medications History of smoking Air pollutant exposure Coughing Energy level Sitting up at night to help breathing Check lung sounds, posture Possible tests: sputum, lung function,
chest x-ray
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History Oral cavity
◦ own teeth◦ hygiene◦ dentures well-fitting
Diet◦ Appetite, vomiting, stomach pain, changes in
stooling Appetite
◦ Decreased body weight◦ Risk for injury, less energy, psychological
changes
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Nausea, vomiting, indigestion◦ note that c/o indigestion unrelieved by antacids
may indicate heart-related problems in older adults
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Usual bowel patterns◦ Constipation (check fluids, activity, positioning,
timing, meds) Medications Possible tests: barium enema, GI series,
stool specimens, sigmoidoscopy, colonoscopy
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History Pre-existing diseases such as diabetes or
hypertension associated with renal failure UA Incontinence
◦ Type: stress, urge, functional, overfow◦ Frequency◦ Nocturia◦ Voluntary flow◦ Use of pads
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History Significant other, Spouse, Partner,
Widowed Number of children Present problems Changes in function Erectile dysfunction (males) or
dyspareunia (females) Chronic illnesses Medications that can interfere with sexual
function or libido
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Neurological Function Patient and family history History of seizures Medications Reflexes Balance Sleep patterns Cognition Communication
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Speech Memory Energy level Motor and sensory function Neuro checks
◦ Vital signs ◦ PERRLA◦ Grip strength◦ Orientation◦ Cranial Nerves
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Patient and family history ROM Daily activities Signs of arthritis
◦ Pain◦ Joints affected◦ Inhibits daily activities◦ Medications used◦ Other pain relief methods used and their
effectiveness
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Posture Devices for mobility Postmenopausal
◦ Risk for osteoporosis The Up and Go Test
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Five senses Vision
◦ Presbyopia◦ Signs of common problems
macular degeneration cataracts glaucoma
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Hearing◦ History of recent hearing loss
presbycusis cerumen impaction foreign body
◦ Hearing aids used
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Taste Smell
◦ Taste and smell connected◦ Ask about satisfaction with how things smell
and taste Touch
◦ Any changes in sensation
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Patient and family history Present skin conditions/complaints
◦ Rashes◦ Itching◦ Dryness◦ Breakdown
Braden risk assessment scale (pg. 501-502)◦ Bruising◦ Skin tears
Nutrition Weight Circulation
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Color Hydration Circulation Intactness Wounds Also check hair and nails
◦ Brittleness◦ Dryness◦ Thickness◦ Texture
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Patient or family history of disease◦ Esp. diabetes and thyroid problems
Changes in weight and appetite Fatigue Vision problems Slow wound healing Gastrointestinal problems
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Signs of diabetes◦ Polyphagia, polydipsia and polyuria
Signs of hypothyroidism◦ Skin changes, sensitivity to cold, fatigue, weight
gain, constipation Diagnostic tests as needed
◦ Glucose testing, thyroid screening and/or panel
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Check for signs of anemia◦ Esp. iron deficiency – skin color, food choices
Lab tests: CBC, Hct, HGB History of infection Takes vaccines for flu or pneumonia HIV/AIDS – sexual assessment
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Attention, memory, language, visual-spatial skills, orientation◦ Mini Mental State Examination (MMSE)◦ Mini-Cog: 3 item recall and clock drawing
Signs of dementia Social abilities
◦Giving and receiving attention◦Participating in conversation◦Appreciating humor◦Helping others
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Quality of life◦Attitude, beliefs, and feelings about aging and
mental health Depression
◦ Geriatric Depression Scale (pg. 250)◦ Persistence of symptoms
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Social support◦ Family, friends, neighbours, church
Living arrangements Resources Insurance Finances Independence and need for assistance Potential for isolation
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Spirituality Religion Worship practices Religious artefacts Spiritual leader/advisor Check for signs of spiritual distress
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Ten Principles of Comprehensive Assessment:
1. The cornerstone of an individualized plan of care for an older adult is a comprehensive assessment.
2. Comprehensive assessment takes into account age-related changes, age-associated diseases, heredity and lifestyle.
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3. Nurses are members of the health care team, contributing to and drawing from the health team to enhance the assessment process.
4. Comprehensive assessment is not a neutral process.
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5. Ideally, the older adult is the best source of information to assess his or her health. When this is not possible, family members or caregivers are acceptable and secondary sources of information. When the older adult cannot self-report, physical performance measures may provide additional information.
6. Comprehensive assessment should first emphasize “ability” and second, should address disability. Appropriate interventions to maintain and enhance ability, and to improve or compensate for disability should follow from a comprehensive assessment.
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7. Task performance and task capacity are two difference perspectives. Some assessment tools ask “Do you dress without help?’ (performance) while others ask, “Can you dress without help?” (capacity). Asking about capacity will result in answers that emphasize ability.
8. Assessment of older adults who have cognitive limitations may require “task segmentation” or the breaking down of tasks into smaller steps.
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9. Some assessment tools or parts of assessment tools may be more or less applicable depending on the setting, that is, community, acute care or long-term care settings.
10. In comprehensive assessment, it is important to explore the meaning and implications of health status from the older adult’s perspective. For example, the same changes in visual acuity for two older adults may have quite different meanings and implications for everyday life.