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Title: Geriatric lecture Notes
Description: A very comprehensive and detailed set of notes covering all aspects of geriatric medicine. Complete with a nice set of diagrams to aid learning. Useful for medical students.
Description: A very comprehensive and detailed set of notes covering all aspects of geriatric medicine. Complete with a nice set of diagrams to aid learning. Useful for medical students.
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AGEING LECTURE NOTES
AGEING AND SOCIETY
•
•
•
•
•
•
People are living longer => ageing population
This is because fewer people die in childhood, but also because fewer people die in middle
age
Mean life expectancy is increasing by 2 years per decade elapsed, and shows no sign of
lagging
Increased lifespan has led to a change in population structure in Western countries
Thus an increasing number of older people are accompanied by a shrinking number of
younger people
Is this a good thing or a bad thing?
What does society think of older people?
• Western society likes the new, not the old
• Older people are frequently portrayed in a negative light:
! “Burden”
! “Pensioner”
! “Crock”
! “Fossil”
! “Crumble”
Ageism
• Definition: Ageism is unacceptable behaviour that occurs as a result of the belief that older
people are of less value than younger people
•
•
May be manifest by the media, public services, employers, relatives, healthcare
professionals and even older people themselves
Each older person is different, indeed heterogeneity increases with age: older adults are a
heterogeneous group, and aging occurs at different rates in different people
...
• Work out how much you would have to save to make the maths work (assume you retire on
50% of your average working life income, and that the stock market stays flat!)
• Answer: 25/35 x 0
...
g
...
• We either need to invest more into pensions or work for longer to sustain this ageing
population
• Society has generally negative attitudes to older people and ageism is rife
• Older people are heterogeneous, and examples of healthy, productive ageing abound
...
Biological
ageing occurs at very different rates between individuals (biological ageing depends on
genetics + environmental factors)
...
• Elder abuse is common, but under-‐recognised
• Society is struggling to get to grips with how to pay for retirement
• Society is completely at sea when thinking about how to look after older, dependent people
in the future
SARCOPENIA AND IMMOBILITY
Disability prevalence
• 14% of population over 16 yrs
• 50-‐60% in population over 75 yrs
• 80% in over 85’s
• Commonest type of disability: problem with locomotion (movement)
• Commonest cause of disability: musculoskeletal condition e
...
arthritis
• Can cause problems such as:
! Unable to go outdoors
! Unable to walk 400m
! Difficulty bending down
! Difficulty getting back up
! Unable to climb stairs
! Unable to maintain balance
• Appreciate how disability can have a major impact on QoL
Factors contributing to immobility
• Sarcopenia
• Disuse atrophy e
...
neurodegenerative disorders
• Intercurrent illnesses -‐ particularly:
! Arthritis
! Stroke
! Heart disease (especially heart failure)
! COPD / chronic lung disease
! Parkinsons disease
! Depression
! Infections (UTI, Pneumonia)
• Immobility causes further progression of immobility (vicious cycle)
Sarcopenia
• Sarcopenia = age related loss of muscle mass (atrophy) and function
• European Working Group definition (Criterion 1 + Criterion 2 or 3):
! 1
...
Low muscle strength (power)
! 3
...
• In fact, elderly people who have sarcopenia/low weight produce significantly less Cr =>
eGFR may overestimate their kidney function
Consequences of sarcopenia
! Muscle wasting and weakness (loss of power)
! Falls and fractures – remember that problems with MSK system and locomotion are the
commonest contributing factors to falls
! Decreased QOL
! Bone loss (due to low activity)
! Obesity
! Insulin resistance and DM (due to decreased activity levels and increased fat deposition)
Mechanisms of sarcopenia
• The pathogenesis of sarcopenia is very complex and multi-‐factorial
...
• Impaired regeneration of muscle fibres due to impaired functioning of satellite cells
• Neuromuscular changes: Fibre type regrouping e
...
reinnervation of fast twitch muscles with
slow motor units
• Protein synthesis: Rates of synthesis reduced especially of contractile protein; increased
proteolysis
• Nutrition: Inadequate intake despite reduced BMR (protein, vitamins and micronutrients)
• Muscle perfusion: Reduced blood flow; endothelial dysfunction; asymptomatic peripheral
vascular disease
• Hormones and inflammatory markers:
! Reduced GH/IGF-‐I
! High IL-‐6, TNF-‐α
! Reduced oestrogen and testosterone
• Calcium metabolism: reduced calcium available for contraction
• Early life influences: low birth weight linked to sarcopenia
Sarcopenic obesity
• Loss of muscle mass with increased fat (due to lack of activity)
• Loss of muscle mass (atrophy due to sarcopenia) results in immobility
...
• Greater risk of cardiometabolic disorders: insulin resistance, DM, metabolic syndrome,
cardiovascular disease
Management
• Exercise (most effective): progressive resistance training increases strength and
endurance
...
Resistance training to increase strength
is the most effective
...
g
...
g
...
Polypharmacy and CNS acting drugs have the greatest risk
...
This is achieved by increasing the formation of adenosine triphosphate
(ATP)
...
It is
possible that they improved cardiac output, and hence, muscle blood supply
...
5% in over 85’s
Diagnosis of PD
• Clinical diagnosis
• Bradykinesia (slowness of movement), plus at least two of:
! Resting tremor (4-‐6 Hz): often asymmetrical e
...
only on one side, or worse on
one side
! Rigidity (non spastic hypertonicity, lead pipe, cog wheel due to superimposed pill
rolling resting tremor)
•
•
•
! Impaired righting reflexes (the righting reflex, also known as the Labyrinthine
righting reflex, is a reflex that corrects the orientation of the body when it is
taken out of its normal upright position)
Often affects arms more than legs; often asymmetrical
Idiopathic PD should respond to a trial of L-‐dopa
...
If symptoms rapidly
improve after taking levodopa then it is highly likely you have Parkinson’s disease
...
Conventional brain imaging scans such as MRI and CT scan are unable to diagnosis
Parkinson’s disease
...
Lower dopamine transporter levels are indicative of PD
...
Parkinsonism
Parkinsonism may be due to:
• Drugs (e
...
dopamine blockers such as metoclopramide (anti-‐emetic) and antipsychotics)
• Stroke disease (if basal ganglia is damaged) – Vascular Parkinson’s
• Idiopathic PD (should respond to a trial of L-‐dopa)
• Parkinson plus syndromes
! Progressive supranuclear palsy PSP: Parkinsonism + involvement of ocular pathways
(e
...
supranuclear ophthalmoplegia => impaired vertical eye movements, diplopia)
and pseudobulbar palsies (e
...
UMN involvement with dysphagia and dysarthria and
brisk bulbar reflexes with spasticity)
...
! Multisystem atrophy MSA: Parkinsonism + ANS dysfunction + cerebellar
dysfunction
...
• Can be confused with essential tremor: tremor of the arms, hands or fingers but
sometimes involving the head or other body parts during voluntary movements such as
eating and writing; kinetic/postural/action tremor; cause unknown but often familial -‐
autosomal dominant AD
Consequences of PD
•
•
•
•
•
Immobility
Falls
Impaired confidence
Incontinence (cannot reach toilet or ANS involvement)
Dementia (late stages)
PD also affects other parts of the body
Autonomic dysfunction (not as profound as MSA)
! Constipation
! Orthostatic hypotension
! Nocturia (urinary incontinence)
• Inability to swallow (dysphagia)
• Mask like expressionless face
• Weight loss (poor food intake plus tremor)
• Dementia (occurs >1 year after onset of movement disorder, otherwise DLB)
• Cognitive impairment and dementia (late) with an approximately 20-‐40% prevalence
• Fatigue
• Pain
• Sleep disturbance
• Ansomnia (decreased sense of smell) may be an early sign
Treatment of PD
• Diagnosis and treatment by a specialist PD service
• Early initiation of therapy may modify disease
• Aim of treatment is to optimise mobility and quality of life, not curative
• Remember medication side effects – anti-‐Parkinsonism drugs can produce very nasty side
effects
• Review diagnosis at each stage
Pharmacological
• L-‐dopa (levodopa): L-‐dopa crosses the protective blood–brain barrier, whereas dopamine
itself cannot
...
It replaces the dopamine that is lost in PD
...
• Dopamine agonists (e
...
ropinirole and cabergoline and bromocriptine)
• Dopa decarboxylase inhibitor (e
...
carbidopa): inhibits peripheral metabolism of levodopa
...
Also reduces systemic
effects
...
g
...
This enzyme is involved in degrading
neurotransmitters such as DA (dopamine)
...
• MAO-‐B inhibitor (e
...
selegiline, rasagiline): Monoamine oxidase inhibitors (MAOIs) are
chemicals which inhibit the activity of the monoamine oxidase enzyme family
...
g
...
Apomorphine does not actually contain morphine or its skeleton, or bind to opioid
receptors
...
g
...
Strength training is the most important aspect of exercise-‐based rehabilitation
...
For
each duplication of DNA as cells divide, there is a little bit of error and damage introduced
...
As people vary in lifestyle and genetics this means that inter-‐individual variability increases
with age (heterogeneity)
...
At the same time there is
progressive vulnerability to a growing range of health-‐related upsets affecting neurological control
mechanisms like hypoxia, pyrexia, and the effects of certain drugs
...
g
...
The MTD involves geratricians, specialist nurses, social worker and OT
The GCA compromises:
• Medical: Problem list, co-‐morbid conditions and disease severity, medication review (limit
polypharmacy and optimise medications) and nutritional status
• Psychological: Mental status/cognitive function, affective disorders, anxiety disorders,
psychosis, testing, behavioural
• Functioning and QoL: Basic activities of daily living ADLs, extended ADLs, activity/exercise
status, gait and balance, QoL
• Social/Environment: Informal needs and assets, social circle, care resource eligibility &
resources, safety, home environment, mobility around house, access to shops etc
Research has shown that CGA in a dedicated assessment unit:
• Reduces mortality at 6 months
• Improves function
• Improves cognition
• Reduces need for nursing home care
• Reduces subsequent hospital admission
Common issues in geriatric patients
• Dehydration
• Self Neglect
• Malnourished
• Anaemic (mixed)
• Postural Instability (loss of balance)
•
•
•
•
Polypharmacy and multimorbidity
Dementia
Social Isolation
CV and cerebrovascular disease
Key messages
• Comprehensive geriatric assessment is the founding skills of geriatric medicine
• Ward based CGA should be considered the evidence based standard of care for frail older
inpatients
• Many MDT members contribute to CGA => communication and teamwork are essential
Acute illness in older individuals
• Older people do not always present as per the textbook
• Atypical or masked presentations may delay diagnosis or lead to the wrong diagnosis
• This is part of the challenge of looking after older people!
Why are older people different?
• Frailty: decline in function across multiple body systems leading to loss of homeostatic
reserve
• May mount less of an immune response
• Blunted heart rate rise
• Comorbid disease (e
...
heart failure, renal failure, dementia)
• Polypharmacy
• Frailty
MI example
• Young people => chest pain
• Older people: No chest pain in 1/3 (particular diabetics and other pts with autonomic
neuropathy)
! Collapse
! Delirium
! Dizziness
! Breathlessness
• How would investigations vary?
• How would management vary?
Sepsis example
• BP may drop early (especially in those on anti-‐hypertensives) due to loss of homeostatic
reserve
• Temperature often low, not high
• Tachycardic response may be absent – particularly so if on beta blockers or other ate
limiting drugs (BCD = beta blockers, calcium blockers and digoxin)
• Delirium may be a prominent feature
• CRP and WCC may not rise (or not much)
• Fluid balance may be hard
• Antibiotics should be targeted
Key points
• In older people we must have a low index of clinical suspicion for many conditions
• For example, perform an ECG in all patients with confusion, collapse, dizziness or dyspnoea
• Key investigations for sick elderly patient = urinalysis (as UTIs are common), ECG (as may not
present typically with chest pain), FBC, U&Es, LFTs, TFTs
Outcomes in older people
• Acute illness carries a much higher mortality rate in older people
• Older people have less homeostatic reserve (frailty)
• They therefore tend to decompensate faster (due to frailty)
• Prompt diagnosis and treatment are therefore critical
• Even minor illnesses (e
...
flu) can cause major deterioration in physical function
• Each illness predisposes to further illnesses (e
...
sepsis increases the risk of MI; MI increases
the risk of pneumonia; pneumonia can lead to stress ulceration and GI bleeding, etc) =>
vicious cycle
The dangers of iatrogenesis
• Because older people have little homeostatic reserve, they are often delicately balanced
• Healthcare interventions therefore cause harm in many cases
• Timely treatment is important, but needs to be proportionate
...
She has started being incontinent
of urine
...
Several days later, she is still confused, and now has diarrhoea
...
The correct underlying diagnosis in this case was constipation, causing acute urinary
retention and incontinence
There was no UTI => unnecessary administering of ABs and iatrogenic C diff infection
Both constipation and retention can precipitate delirium in frail older people
Summary
• Comprehensive geriatric assessment (CGA) is the founding skills of geriatric medicine
• Ward based CGA should be considered the evidence based standard of care for frail older
inpatients
• Many MDT members contribute to CGA => communication and teamwork are key
• Older people may have an atypical presentation to acute illness
• Older people are prone to iatrogenic disease
• Rapid, accurate diagnosis is key to balancing these issues
• Only a low index of clinical suspicion is needed to warrant investigations in elderly
Summary of components of Comprehensive Geriatric Assessment (CGA)
Medical
• Co-‐morbid conditions and disease severity
• Medication Review (limitation of polypharmacy and optimise medications)
• Nutritional status
• Problem list
Psychological
• Cognition
• Mood (affective disorders)
• Anxiety
• Psychosis
• Fears
• Behaviour
• Psychiatric conditions assessment
Functional capacity (QoL)
• Basic activities of daily living, extended activities of daily living
•
•
•
•
QoL
Gait and balance
Activity/exercise status
Instrumental activities of daily living
Social circumstances
• Informal support available from family or friends
• Social network such a visitors or daytime activities
• Eligibility for being offered care resources
• Social groups
Environment
• Home comfort, facilities and safety
• Use or potential use of telehealth technology etc
• Transport facilities
• Accessibility to local resources e
...
shops
AGEING AND END OF LIFE PALLIATIVE CARE
• Palliative care is an approach that improves the quality of life of patients and their families
facing the problem associated with life-‐threatening illness, through the prevention and
relief of suffering by means of early identification and impeccable assessment and treatment
of pain and other problems, physical, psychosocial and spiritual
...
End of life care is the last stages of palliative care
...
Opioid sparing
...
• Regular NSAID e
...
aspirin, ibuprofen or diclofenac (often want to avoid NSAIDS in elderly
and patients with renal/liver disease)
• +/-‐ Adjuvant analgesic
• NB: Adjuvant analgesics are painkillers whose primary indication is for something other than
pain e
...
anticonvulsants (gabapentin) and antidepressants (amitriptyline)
...
Neuropathic pain is common in cancer e
...
due to invasion of nerves
...
g
...
g
...
Twice daily MST is the preferred option as
we have a c=near constant therapeutic level of morphine in the body for most of the day
...
• Ensure there is always “breakthrough” oramorph prescribed PRN
...
It is important to remember that 1/6 is just an approximation
...
It is commonly used in medicine to mean as needed or as the situation arises
Titrating morphine example
• Day 1: Oramorph (liquid morphine) 5mg given 4 times in 24 hours (at pts request) = 20mg
total daily 24 hour dose => Pain control was achieved
• Day 2: Start MST 10mg twice daily (20mg in total) + breakthrough Oramorph (20/6= 3
...
e
...
Constipation will continue throughout use of opioid
...
g
...
However the laxative should be given continuously as constipation is an ongoing side effect
while opioids are being administered
...
Recognition that the patient is dying
2
...
Spiritual care
4
...
Review of clinical interventions should be in the patient’s best interests
6
...
Nutritional review, including commencement or cessation
8
...
Regular reassessment of the patient
10
...
g
...
5mg (PRN) [can also use metoclopramide]
• Respiratory secretions => SC buscopan (hyoscine butylbromide) 20mg (PRN)
• Dyspnoea: BDZ, opioid, fan
Pain control at end of life
•
SC morphine is twice as potent as oral => SC morphine should be half of oral dose
•
Dose of PRN SC morphine depends on 24 hour dose of morphine
...
g
...
5mg PRN 2 hourly (every 2 hours)
• Buscopan (hyoscine butylbromide) SC 20mg PRN 2 hourly (every 2 hours)
Last days:
• Family updated
• Dies peacefully with his family present
FALLS IN THE ELDERLY
Who falls?
• Everyone has the potential
• 30% over 65 years per year
• Over 40% over 75 years per year
• Falls in elderly are much more serious as higher risk of fracture, fracture complications,
and other injuries
• Elderly individuals also take much longer to heal
Consequences of falls
• Injury
! 10% result in significant injury
! Trauma e
...
fractures
! Hypothermia
! Pressure injury (pressure sore)
! Infection (hospital acquired or complication of fracture / skin laceration)
• Psychological and social
!
!
!
!
!
!
Restricted activity
Fear and anxiety of falling
Depression
Reduced QOL
Declining function
Impact on family / carers
Why do people fall?
Lots of different reasons
• Locomotor impairment e
...
MS pathology (commonest cause)
• Drugs: polypharmacy, CNS acting drugs
• Neurological deficit
• Cognitive impairment
• Cardiovascular disease e
...
as a result of syncope/pre-‐syncope
• Vestibular problem
• Visual impairment
• Environmental factors
Usually a combination of several of the above
Risk Factors and RR (relative risk)-‐OR (odds ratio)
• Muscle weakness (e
...
sarcopenia)
4
...
0
• Gait deficit
2
...
9
• Use assistive device
2
...
5
• Arthritis
2
...
3
• Depression
2
...
8
• Age >80 years
1
...
7
• Class 1a antiarrhythmics
1
...
2
• Diuretics
1
...
g
...
g
...
g
...
Results in high stepping or stamping gait
...
g
...
g
...
g
...
Also perform ECG in
any patient with suspected pre-‐syncope, palpitations, or dyspnoea
...
• Transient/sudden reduction in blood flow to brain
• 3% A&E attendances due to syncope
• Must get collateral history
Syncope can be broadly divided into:
• Vasovagal response: increased parasympathetic nervous system (vagal) tone and withdrawal
of sympathetic nervous system tone due to a variety of triggers e
...
stress, anxiety, pain
...
• Cardiac
! Arrhythmia
! Obstructive cardiac lesion (e
...
aortic stenosis)
! Structural cardiac disease (e
...
hypertrophic cardiomyopathy)
! Aortic dissection
• Blood pressure
! Orthostatic (postural) hypotensive faint
! Hypovolaemia
! Autonomic neuropathy
! Carotid hypersensitivity
•
Other causes e
...
hypoglycaemia, hypocapnia (induces cerebral vasoconstriction),
hypoxaemia, and anaemia
Pathophysiological mechanisms of syncope include:
• Impaired baroreceptor response: carotid hypersensitivty
• Reduced blood volume (hypovolaemia)
• Altered cerebral autoregulation e
...
g
...
g
...
g
...
! “Accidental”
! Fall versus syncope – any LOC? Emotional triggers? Palpitations? Chest pain?
Dyspnoea? Pallor or light-‐headedness before falling? Recovery time?
! Postural symptoms – dizziness or lightheadness on changing posture e
...
standing
up or turning head
! Vertigo symptoms – room spinning or oneself spinning around room
! May be an overlap
! Autobiographical history not reliable => witness account
• Frequency – has fall occurred before? How many times? Circumstances similar?
• Indoors/outdoors
• Can they get up
• Injuries – particularly head injury
• ALWAYS GET A COLLATERAL HISTORY IF POSSIBLE
PMH
• Cardiovascular disease
• Neurological disease
! Stroke
! PD
! Neurodegenerative conditions
• Cognitive impairment
• Locomotor
! OA especially lower limbs
! Spinal problems
• Diabetes – as hypo can cause falls
• Visual problems – cataracts, glaucoma, ARMD
• Bone health – osteoporosis
DH
• Cardiac drugs
• Neuroactive drugs
! PD drugs
! Antiepeleptics
! Opiate analgesia
! Antipsychotics
! Antidepressants
! Sedatives
•
•
•
Hypoglycaemics e
...
insulin and sulphonylureas (e
...
gliclazide, glibenclamide and
tolbutamide)
Anticoagulation e
...
warfarin can cause ICH or hypovolaemia due to internal bleed
Anti-‐platelets e
...
aspirin or clopidogrel
Social history
• Alcohol and illicit drug use
• Walking aids
• Independence for ADLs (activities of daily living)
• Home environment
• Carers
Systematic enquiry
• Cardiac
• Neurological
• Locomotor / MS
• Continence
Examination
• Mood
• Cognitive function
• Neurological
• Balance
• Vision
• Blood pressure (lying and standing)
• Cardiovascular
• Musculoskeletal
• Gait
Who Should Assess Fallers?
• Everyone from time-‐to-‐time
! Ask about falls-‐ often unreported
! “Get up and go test”
• Geriatricians and MDT
! Multiple falls
! Falls requiring hospital attendance
! Gait/balance abnormalities
The MDT
•
•
•
•
•
•
•
•
•
Doctors
Physiotherapists (Physios)
Occupational therapists (OTs): OTs use treatments to develop, recover, or maintain the daily
living and work skills of people with a physical, mental or developmental condition
...
g
...
g
...
35) environment for absorption e
...
phenytoin
(AED), aspirin, penicillins
Basic drugs require a basic (≈ph > 7
...
g
...
Gastrointestinal absorption is affected by an increase in gastric pH (less acidic) and a
decline in small intestine surface area
...
They may have an impact if
Less acidic => acidic drugs absorption is decreased and basic drugs absorption is increased
Less surface area => less absorption
• Previous GI surgery
• NG tube or PEG feed
• Transdermal patches and oedema
Think about best route of delivery:
• Liquid/syrup for dysphagia
• Can tablets be crushed for PEG or NG tube?
• Confused patients refusing tablets / acute agitation
• Nil by mouth (NBM) patients for surgery or investigations
Drug distribution
• Far greater changes and impact are seen with body distribution changes
...
g
...
• There is an increase in body fat tissue (proportional to muscle mass), so that lipophilic
drugs (e
...
diazepam, anaesthetics) have a larger volume of distribution (and thus a longer
half life) making use of these drugs undesirable
...
g
...
Albumin is basic and binds to acidic drugs
...
g
...
g
...
g
...
g
...
• Elderly patients often have a lower GFR (decreased: size, tubular secretion, renal blood flow)
• Serum creatinine is not a reliable measure of renal function (elderly produce less
creatinine due to decreased muscle mass => overestimates GFR); GFR is the gold standard
indicator of renal function
• Creatinine clearance (CRCL) is used to estimate GFR
• A commonly used surrogate marker for estimate of creatinine clearance (CRCL) is the
Cockcroft-‐Gault (CG) formula, which in turn estimates GFR in ml/min: however the Cockroft
and Gault Formula may overestimate GFR in elderly (as elderly produce less creatinine due
to reduced muscle mass)
• Cockroft and Gault Formula => [(140-‐age) x mass (kg) x (1
...
04 women)]/
serum Cr (µmol/L)
• The most recently advocated formula for calculating the eGFR is the Modification of Diet
in Renal Disease (MDRD) formula; the 4-‐variable MDRD estimates GFR using four variables
-‐ serum creatinine, age, sex and ethnicity [CASE]
• Use appendix 1 of BNF for calculating drug doses in hepatic and renal impairment
CRCL level of renal impairment
• Mild: eGFR 50-‐20ml/min (stage 3 CKD)
• Moderate: 20-‐10ml/min (stage 4 CKD)
• Severe: Less than 10ml/min or anuric (non passage of urine) – Stage 5 CKD
Pharmacodynamics
• Pharmacodynamics= drug action on the body (+ADRs)
• General principle: Lower doses achieve same effect in the elderly (common e
...
alcohol) =>
start low and go slow
• However, it is important to remember that some effects are decreased (e
...
e
...
! Vancomycin
! Warfarin
! Phenytoin
! Lithium
! Digoxin
! Carbamazepine
! Gentamicin
! Levothyroxine
Polypharmacy + OTC preparations
• Elderly = 12% of population but 32% of prescriptions
• Average use for person >65 yrs
! 4 prescription drugs
! 2
...
• Polypharmacy is often associated with a decreased quality of life, decreased mobility and
cognition
...
g
...
This may lead to further misdiagnoses and further symptoms
...
g prazosin)
! Antipsychotic => akithesia => more meds
Adverse drug reaction (ADRs)
• The elderly are at high risk for adverse drug reactions (ADRs)
...
• As the number of medications a person takes increases, the risk of an ADR increases
exponentially
...
This can
result in additional drugs prescribed in response to treat the symptom of an ADE, instead of
stopping the offending drug
...
• Prescribers need to rely on careful medication history taking (including OTC preparations)
in order to diagnosis ADR’s that present in atypical ways
...
g
...
g
...
NSAIDs
• GI hemorrhage e
...
due to peptic ulcer (as a result of decreased mucosal barrier function
due to decreased PG formation)
• Decline in GFR (due to renal afferent arteriole vasoconstriction as a result of decreased PG
formation) => can precipitate toxicity of other renally excreted drugs i
...
ones with narrow
therapeutic window
• Caution in liver cirrhosis (due to risk of bleeding and heptorenal syndrome)
• Decreased effectiveness of diuretics, anti-‐hypertensive agents
• Paracetamol as effective as NSAIDs in mild OA => paracetamol is first line for many types
of pain (due to less side effects)
2
...
Antibiotics
• AB resistance and C
...
g
...
•
First, start low, go slow; start treatment with low doses due to lower recommended starting
doses in elders based upon pharmacokinetic changes with aging (e
...
reduced total body
water), and the risk of an ADR often being dose related
...
Also modify the dose in relation to degree of any hepatic and/or renal
impairment
...
This principle teaches avoiding starting drug therapy
until the diagnosis of the condition is clearly established
...
•
Third, use no drug beyond its time
...
•
Fourth, avoid the use of new drugs until their safety for use in the elderly has been
established
...
•
Lastly, the primary care physician (GP) should be the quarterback of all medication
prescribing
...
Lack of oversight in this setting
can often result in duplication of therapy, the use of drugs that interact with each other, and
the use of drugs that are inappropriate for the elderly
...
Regular review of the entire medication regimen by the PCP
can be accomplished by maintaining an active drug list, and review of all current medications
by specialists by having the patient bring all medications to office visits (the brown bag
review)
...
DELERIUM
What is delirium?
• An ACUTE transient, usually reversible, global cognitive dysfunction
• Hallmarks are (AAAA):
! Acute change in cognition +/-‐ fluctuating (e
...
sundowning)
! Attention: Decreased attention: test with digit span
! Alertness/activity: Decreased alertness, hypoactive, hyperactive
•
•
! Assessment of orientation and 4AT tool: time, place, and person, serial 7s, digit
span
! Fluctuating symptoms (often with nocturnal worsening of symptoms)
Delirium is NOT a Dx; delirium occurs secondary to some other cause(s) of systemic
dysfunction
The principle aim of management is to identify the underlying diagnoses and treat them
accordingly
...
g
...
g
...
• Diagnosis is missed in up to 70% of cases
• Associated with increased mortality: In patients who are admitted with delirium, mortality
rates are 10-‐26%
• It is not benign; it is usually a marker of some underlying serious pathology
• It is very distressing for patients, relatives and carers
...
This is so that we can monitor them more closely and aim to prevent delirium from occurring
...
• Any acute factors that affect neurotransmitter, neuroendocrine or neuroinflammatory
pathways can precipitate an episode of delirium in a vulnerable brain
...
• Some of the most common precipitating factors are listed below
• Young people can get delirium as well!!!
Metabolic
• Malnutrition
• Dehydration
• Electrolyte imbalance
• Anaemia
• Hypoxia
• Hypercapnoea
• Hypoglycaemia
• Endocrine disorders (e
...
SIADH, Addison’s disease, hyperthyroidism, hypercalcaemia)
Infection
• Especially respiratory and urinary tract infections
Medication
• Anticholinergics
• Dopaminergics
• Opioids
• Steroids
• Polypharmacy
Vascular
•
•
•
•
•
•
•
•
•
•
•
•
Stroke/Transient ischaemic attack
Myocardial infarction
Arrhythmias
Decompensated heart failure
Physical/psychological stress
• Pain
• Iatrogenic event
• Chronic/terminal illness especially cancer
• Post-‐traumatic event e
...
fall or fracture
• Immobilisation/restraint
Other
• Substance withdrawal, esp
...
Diagnosing delirium
• Step 1: Is there an acute cognitive impairment / change in cognition? Often best to ask a
family member or carer
• Single question in delirium (SQID): ‘Do you feel that [patient’s name] has been more con-‐
fused lately?’
• Can also use MMSE or alternative cognitive testing tool – but MUST know patients baseline
as delirium is an acute change
• If yes then perform the confusion assessment method (CAM)
Confusion assessment method (CAM)
• Does the patient have symptoms which are acute and fluctuating?
• Attention: Does the patient have inattention?
• Activity: altered conscious level (hyper-‐alert, hypo-‐alert or mixed state)?
• Does the patient have disorganised thinking?
• If yes to the above => delirium is very probable
• Assess with the 4AT tool:
! Acute and fluctuating symptoms
! Attention deficit – digit span
! Alertness: altered conscious level
! AMT4 score (orientated in time, place and person) – what is your name? Where are
you? Do you know what day it is? What month it is? What year it is?
Testing inattention
• Use the Digit Span test
• Digit-‐span task is used to measure working memory's (closely linked to attention) number
storage capacity
...
g
...
If they do this successfully, they are given a longer list (e
...
,
'9, 2, 4, 0')
...
• This test assesses not only memory but also attention; therefore in patients with memory
impairment may not be a reliable indicator of attention
Delirium subtypes
• Hyperactive: Agitated, aggressive, wandering
! Easy to diagnose
• Hypoactive: Withdrawn, apathetic, sleepy, coma
! Easily missed
! Hypoactive delirium has twice the mortality rate of hyperactive delirium
• Mixed state
The 4AT tool
• The 4 A's Test or 4AT is a new screening tool for delirium and cognitive impairment
• The 4AT is designed to be used by any health professional at first contact with the patient,
and at other times when delirium is suspected
...
g
...
g
...
Observe the patient if
Clearly abnormal
4
asleep, attempt to wake
...
AMT4 (age, D
...
B, place (hospital), current year)
Attention: Ask the patient: “please tell me the months of
the year in backwards order, starting at December
...
g
...
No mistakes
1 mistake
>2 mistakes/untestable
Achieves 7 months or more correctly
Starts but scores <7 months/refuses to start
Untestable (cannot start because unwell, drowsy,
inattentive)
No
Yes
0
1
2
0
1
2
0
4
More detailed cognitive assessment and
If scored 4 or more this is possible
If scored 1-3 cognitive
informant history taking are required
impairment is suggested
delirium +/- cognitive impairment
How do we manage delirium?
Assessed/s
Results
Abnormality
TIME Initiate all elements within 2 hours (initial and write time of completion)
ent
seen
found
Think about possible triggers
Treatment of delirium involves two main strategies:
SEWS (think sepsis)
• First,
Blood glucose treatment of the underlying presumed acute cause or causes;
Medication history (identify new medications/change offor the brain
...
Detection
and management o mental stress
Investigate and intervene to correctf underlying causes is also very important
...
Completed
Manage
Initiate treatment of ALL underlying causes found above
Non-‐pharmacological treatments are the first measure in delirium, unless there is severe agitation
Explain
or Document diagnosis ofplaces the person at risk of harming oneself or others
...
Only use medication if
Ensure glasses and hearing aids are
Multifactorial assessment and management and
patient’s symptoms are threatening their own or others safety
...
Use:
unnecessary
Provide regular reassurance and
• Identify and reverse any underlying causes 1
...
5-1mg orally or 0
...
Max
Urinary
Use family/familiar people toand supportive factors
• Environmental reassure and
5mg in 24 hours
...
Lorazepam 0
...
Remember benzodiazepines can
! “Continuity of
Reduce noise and visual overstimulationstaff” Confrontation
worsen or prolong delirium
...
Pharmacological management of delirium
The pharmacological treatment for delirium depends on its cause
...
Evidence is weaker for the atypical antipsychotics, such as risperidone and olanzapine
...
However, if delirium is due to
alcohol withdrawal or benzodiazepine withdrawal, or, if antipsychotics are contraindicated (e
...
in
Parkinson's disease, Parkinsonism, DLB or neuroleptic malignant syndrome), then benzodiazepines
are recommended
...
Haloperidol
• Usual first choice: unless CI e
...
Parkinsonism or heart disease
• Has sedative and antipsychotic properties
• High potency, few anticholinergic side effects, no active metabolites
• Start with low dose (0
...
5mg); better to give regularly
• Oral (avoid IM if at all possible)
• Max 5mg in 24 hours
• “Start low and go slow”
• Get senior advice before giving
Benzodiazepines
• Use if alcohol or benzodiazepine withdrawal or if seizures
• Use in dementia with Lewy bodies or Parkinsonism
• Use lorazepam (shorter acting and fewer active metabolites)
• Lorazepam can sometimes worsen delirium!! (Hence why we only use in limited
circumstances e
...
if good medical nursing care fails, and haloperidol is CI)
• Chlordiazepoxide for alcohol withdrawal
Important points
! Document why it was necessary to give sedation
...
9% vs 15%)
• Reduced number of days with delirium (105 vs 161)
• Reduced number of delirium episodes (62 vs 90)
Components of HELP
• Cognition: orientation measures; 3x/day cognitive stimulation
• Sleep protocol to reduce insomnia and sedative use
• Early mobilisation: 3x/day minimum and avoidance of restraints
• Hearing protocol: hearing aids, wax removal, amplifying devices
• Visual aids: glasses, large print
• Effective hydration
Summary
• Get proper history (from patient +/-‐ collateral history)
• Recognise delirium
• Diagnose delirium: SQID, CAM tool, 4AT tool
• Delirium is not benign
• Delirium often has more than one cause: once you’ve found one still look for others
• Only give sedation (haloperidol or lorazepam) if absolutely necessary (e
...
conservative
methods have failed) and always document reason why given
REHABILITATION
• Rehabilitation = a process aiming to restore personal autonomy and participation to
activities of daily life considered most relevant by patients or service users, and their family
carers
• Restore as best as possible
• Although don’t give false hopes as rehabilitation will likely never restore back to pre-‐morbid
level
Who may need rehabilitation?
Where does rehabilitation occur?
• Acute Hospitals
• Rehabilitation units
• Hospitals
• Community: in peoples’ homes
• Out-‐patient settings e
...
day hospital and GP or community hospital settings
Principles of Rehabilitation
• Client or patient centred: ask patient “what matters most to you?”
• Goal -‐directed: identify problems and then set realistic goals
• Co-‐ordinated: MDT (complex patient needs requires specialist input from several disciplines)
• Improve outcomes
Measuring outcomes
Impairment or activity specific
• Rivermead Motor Assessment Scale
• Chessington Occupational Therapy Neurological Assessment Battery
• Boston Diagnostic Aphasia Examination
Activities of Daily Living Scales
• Barthel Index
• Functional Independence Measure
• Measures
! Feeding
! Bathing
! Grooming
! Dressing
! Bowels
! Bladder
! Toilet Use
! Transfers (bed to chair, and back)
! Mobility (on level surfaces)
! Stairs
Other Outcomes
• Anxiety and depression
• Quality of life
• Cognitive function
•
•
Instrumental ADL (instrumental activities of daily living (IADLs) are not necessary for
fundamental functioning, but they let an individual live independently in a community e
...
housework, managing money, use of telephone or other form of communication etc)
Participation measures
Discharge Planning
• Housing and residential care
• Home assessment
• Home alterations, aids appliances
• Home services and social care teams
• Financial issues and benefits
• Transition to community rehabilitation
• Return to work, leisure and other life roles
AGEING: SUMMARY OF COURSE
•
We live in an ageing population and there is going to be even more older people in the
future (and less younger people to support society financially)
•
This will cause major challenges for healthcare providers (as well as society)
•
Older individuals are very heterogeneous across any measure of physiological or daily
functions (e
...
spectrum from severely frail to “fit as a fiddle”)
•
Many older individuals have a loss of homeostatic reserve (frailty) due to cumulative
defects across multiple body systems => small insults can produce major problems
•
Frailty = accumulated deficits across multiple systems => loss of homeostatic reserve
(there are scales to quantify frailty)
•
It is NOT being old which causes illness; it is illness which causes illness e
...
illness causes
frailty (loss of homeostatic reserve) which predisposes to more illness => vicious cycle
•
Although getting old is often associated with the accumulation of diseases, it is not an
inevitable part of aging
•
The comprehensive geriatric assessment (CGA) is the standard of care for older people -‐ it
is an evidence based method for looking and solving problems in older people
...
If
it were a drug it would be the best drug we have! The number needed to treat is
approximately 3
...
Requires MTD assessment
...
A collateral history is extremely important
...
The big 5 modifications which can be used
to decrease the incidence of falls are: cataract extraction, strength and balance training,
calcium and vitamin D supplementation, medication review (avoidance of polypharmacy
and CNS acting drugs if possible), and home environment modification
...
g
...
5 BMD)
•
Delirium is common in hospital, under-‐diagnosed and doubles mortality
...
This principle is
common of many syndromes in geriatrics => often multiple causes
...
We
must manage and treat the multiple causes of delirium
...
Sarcopenia (muscle atrophy) is a major contributor to
reduced muscle strength and thus immobility
...
Treating sarcopenia is key to increasing health and
QoL
...
•
Rehabilitation is an active process which can transform the lives of folder people
...
Polypharmacy is common
...
Think about what our aims are
...
Use kidney function and liver function to
influence prescribing
...
It also includes the time building up to end of life
care
Title: Geriatric lecture Notes
Description: A very comprehensive and detailed set of notes covering all aspects of geriatric medicine. Complete with a nice set of diagrams to aid learning. Useful for medical students.
Description: A very comprehensive and detailed set of notes covering all aspects of geriatric medicine. Complete with a nice set of diagrams to aid learning. Useful for medical students.