Falls and dementia: keeping upright with memory problems · PDF fileFalls and dementia:...
Transcript of Falls and dementia: keeping upright with memory problems · PDF fileFalls and dementia:...
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Professor Ngaire Kerse
School of Population Health, Brain Research New Zealand, Faculty of Medical and Health Science, University of Auckland
Falls and dementia: keeping upright with memory problems
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Age distribution
Ministry of Health. 2011. Tatau Kura Tangata: Health of Older Māori Chart Book 2011. Wellington: Ministry of Health.
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The answer: 290, 577, 814 people in 2000
612, 888, 500 people in 2050
How many people need daily care?
Falls – 1/3 of 65+
50% - residential care, 85+
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Intrinsic • Acute illness • Cardiovascular • Leg weakness • Stroke, Parkinson’s
Extrinsic • Hazards • Other residents • Staff, processes
Causes of falls
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• Falls and balance retraining
exercises
• Home hazard assessment
• Good medical care
• Vitamin D
Prevention of falls
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http://www.acc.co.nz/otagoexerciseprogramme
Home based Exercises Individualised Progressive Ankle weights Walking 3 x week 6 visits over 6 months Trained nurse Physiotherapist
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Otago Exercise Programme
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Functional reserve and thresholds
eg.
muscle strength
30 Age (time) 80
threshold reserve
Acute illness
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Impacting the threshold
eg.
Aerobic capacity
30 Age (time) 80
reserve
Athletes
Hodgeson
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Gender
FEMALEMALEM
ean
amou
nt o
f act
ivity
ove
r 2 w
eeks
(min
utes
) 800
600
400
200
0
other
housework
sports
gardening
walking
164 women, 103 men
age 73.6
Walking, 2 hrs 30 / 2 wks
Oldest old had similar pattern
What activities?
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Deloitte, economic impact of dementia is NZ 2012
Estimates in 80+ vary 5-20% dementia
No studies of incidence or prevalence in NZ
Incidence greater in non-European pops
Financial cost high esp res care
UK CFAS – 65+ yrs • 8.3% 1989-94 • 6.8% 2008-11 Mathews FD, Lancet 2013
What about cognition?
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Time
Global cognitive functioning Normal ageing
Linguistic skill and general intelligence decline over decades
A B
C D
Dementia trajectory
E
Symptomatic but pre-diagnostic phase with brain compensation occurring, over several years
Symptomatic & post-diagnosis phase, with progressive decline over years
D1
D2
Cognitive impairment & dementia
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A fall related event with or without fracture is the most common reason for hospitalisation in people with dementia, accounting for approximately 26% of all admissions
Falls in people with dementia
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• Disturbances in cognitive processes = slower gait and gait instability • Attention, executive function, working memory • predict future mobility loss, falls, and progression to dementia • Better for amnestic MCI • Not all dementias are the same
Cognition and gait
14
Montero-Odasso, M., J. "Gait and cognition:…..." J Am Geriatr Soc 60(11): 2127-2136.
Activity programmes for people with cognitive problems might not work
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Person with dementia
Confusion Orientation Agitation
Trip over things Can’t find the toilet Medication increases falls
Gait and balance Reaction times Amount of activity
Incontinence
Footwear
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Randomisation (no stratification)
41 Rest-homes in Christchurch and Auckland Falls, function, QOL, 682, mean age 87 years.
Outcome evaluation No Impr QOL Function (on average, signif subgroup) No increase in falls
Promoting Independence in Residential Care
Social Group •2 visits
Activity Group •PIRC, functional assessment, goal set, PIP to caregiver • falls surveillance
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Cognition important Good cognition • Function • Depression
• Falls
Poor cognition
• Function
• Depression
• Falls
Understand the population, target the intervention Kerse BMJ 2008;337:al445
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Variation in residential care
01
23
4m
ean
of e
xtra
falls
average number of falls per resthome
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Do not anticipate hazards or effects of actions.
Do not know that dizziness may be a symptom of other causes.
Does not scan the environment effectively, for hazards.
Reaction times are slower, gait is different
fluorescent step edge removal of below knee height hazards Reorganising furniture for improved access
People with dementia
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Meaningful activities
Safe environment
Avoid agitation and exacerbation of BPSD
Family
Staff
People around the person with dementia
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Things to do state of mind
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Wai Chi Chan et al. Efficacy of Physical Exercise in Preventing Falls in Older Adults With Cognitive Impairment: A Systematic Review and Meta-Analysis JAMDA 16 (2015) 149e154 22
Exercise for falls in people with cognitive impairment
Group and individual – lower leg strength and balance retraining, good adherence
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Hazards
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• Persons with dementia fall frequently • Specific exercises for lower leg
strengthening and balance retraining • Sensible suggestions • Keep calm and carry on
Summary