Falls Flashcards

1
Q

What should you ask during a falls history?

A

Before:

  • Time, date, place
  • Pattern to falls?
  • ICE on reasons for falling
  • Lightheadedness
  • Vertigo
  • Palpitations
During:
- Loss of consciousness
- Jerking
- Seizures
After
- Post-ictal
- Incontinence
- Able to get up?
- Injuries?
- Did they get help?
- Complications (ex long lie, fractures, head injury)

Causes:

  • Medication history
  • Vision
  • Cognition
  • Osteoporosis risk factors
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2
Q

What are some causes for falls that come under DAME?

A

Drugs

  • Polypharmacy
  • Antihypertensives
  • Opioids
  • Psychotropics
  • Anticholinergics

Age:

  • Vision changes
  • Cognitive decline
  • Gait abnormalities
  • Osteoarthritis

Medical:

  • Hypotension
  • Arrhythmias
  • Neurological disease (ex Parkinson’s, strokes, neuropathy)
  • Cataracts

Environmental:

  • Walking aids
  • Footwear
  • Home hazards
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3
Q

What is Vertigo?

A
  • Sensation of the room spinning around
  • Suggests problem in the vestibulo-labyrinthine system, anywhere between the ear (peripheral vertigo) and the central vestibular pathways (central vertigo)

Peripheral causes

  • Benign paroxysmal positional vertigo (BPPV) (common)
  • Meniere’s disease
  • Vestibular neuritis
  • Acoustic neuroma

Central causes

  • Migraine
  • Brainstem ischaemia
  • Cerebellar stroke
  • Multiple sclerosis

BPPV is a common cause of peripheral vertigo

  • Short spells of vertigo (up to 1 minute) that settle spontaneously
  • Occurs when they move their head (ex getting in/out of bed, looking up/turning quickly)
  • It can be diagnosed using the Dix-Hallpike manoeuvre
  • Treatable using the Epley manoeuvre.
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4
Q

What is Presyncope?

A
  • Feeling as if you are about to faint/complaining of lightheadedness
  • Often when standing/seated/upright
  • Associated with pallor, relieved by lying
  • Suggests cerebral hypoperfusion due to hypotension
  • Postural/orthostatic hypotension is common in older patients
  • Diagnosed by doing lying and standing BP
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5
Q

What does unsteadiness mean?

A

A general feeling of unsteadiness or feeling unbalanced that usually comes from a patients legs rather than their head (asking someone “does this feeling come from your head or your legs?” is often useful).

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6
Q

What are some psychogenic causes of dizziness?

A
  • Common
  • Fear of falling
  • Loss of confidence
  • Anxiety/panic attacks/somatisation
  • Exacerbates organic dizziness
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7
Q

Which examinations would you do to assess a falls patient?

A
  • Upper and lower limb neurological exam
  • Cognition (ex AMT 10, CAM, MMSE, 4AMT)
  • Vision
  • Vestibular
  • CVS
  • Musculoskeletal
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8
Q

Which initial investigations should be done for a falls patient?

A
  • ECG - to look for arrythmias/abnormalities
  • TFTs/B12/Folate - exclude other causes of peripheral neuropathy
  • U&Es
  • Bone profile
  • FBC

They above look for anaemia, markers of infection and electrolyte abnormalities

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9
Q

Who is involved in the MDT and why?

A
  • Consultant: leads MDT
  • Nurse: keeps track of changes in patient
  • Physiotherapist: manages mobility and pain
  • Podiatrist: neuropathy, difficulty walking, footwear
  • Occupational therapist: caters to other aspects of social care
  • Pharmacist: checks for drug interactions, safe prescribing, and drug management
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10
Q

How can we create a management plan based off the DAME criteria?

A

Drugs:
- Stop any antihypertensives, sedatives, etc, unless needed, or reduce dose

Ageing:

  • Balance retraining run by physiotherapists
  • Check visual acuity and refer to optician
  • Check osteoporosis risk

Medical:

  • Maintain good diabetic control (slows down rate of diabetic neuropathy)
  • Addressing osteoprosis risk reduces rate of fractures
  • Cataract surgery improves vision

Environment:

  • Environmental assessment for hazards
  • Change footwear, lighting in home
  • Panic alarm/care-call system with patient
  • Adaptations at home
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11
Q

What are the NICE guidelines on assessment of Osteoporosis?

A
  • Assessment of fracture risk be considered in any patient over 50 with a history of falls
  • In all women over 65
  • In all men over 75

Risk factors that would implicate earlier assessment than specified:

  • History of falls
  • Previous osteoporotic fragility fracture
  • Current or frequent use of oral corticosteroids
  • BMI underweight (<18.5)
  • Smoker
  • Alcohol intake over 14 units/week

Secondary causes of osteoporosis:

  • Hyperthyroidism
  • Cushing’s
  • Diabetes
  • Hypogonadism
  • Untreated premature menopause
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12
Q

What is the NICE guidance on the management of Osteoporosis?

A

High risk of fragility fracture:

  • Offer DEXA scan
  • Then bone-sparing drug treatment if T-score is -2.5 or less
  • If T-score is more than -2.5, treat underlying conditions, and repeat DEXA within 2 years

Intermediate risk:

  • Arrange a DEXA scan to measure bone mineral density
  • Offer drug treatment if T-score is -2.5 of less

Low risk:

  • No drug treatment
  • Offer lifestyle advice
  • Follow up within 5 years
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13
Q

What drug treatments are recommended for patients high risk of osteoporotic fracture?

A

If bone-sparing treatment recommended:

  • Prescribe a biphosphonate (alendronate 10mg OD or 70mg OW/risedronate 5mg OD or 35mg OW)
  • If there are no contraindications, with appropriate counselling
  • To patients with a T-score of -2.5 or less

If the patient’s calcium intake is adequate (700mg/day)
- Prescribe 10mcg (400IU) of vitamin D without calcium if sun exposure insufficient

If calcium intake inadequate:

  • Prescribe 10mcg (400IU) of vitamin D with 1g of calcium daily
  • Prescribe 20mcg (800IU) of vitamin D with at least 1g of calcium daily if patient is elderly and housebound, or living in a nursing home

Consider prescribing HRT to women who have the menopause before age 40 (premature)

  • Reduced risk of fragility fractures
  • Relieves menopausal symptoms
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14
Q

What lifestyle information and advice should be given to patients at risk of fragility fractures?

A
  • Take regular exercise
  • Improves muscle strength
  • Encourage walking, especially outdoors (vitamin D)
  • Strength or weight training of different muscle groups
  • A combination of exercise types (ex balance, flexibility, stretching, endurance and strength)
  • Eat a balanced diet
  • Stop smoking
  • Reduce alcohol intake to within recommended limits
  • 1-2 units a day with at least 2 alcohol-free days

Provide the patient with information and support:

  • National osteoporosis society
  • Healthtalkonline
  • NHS England
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15
Q

How should you counsel a patient prescribed Biphosphonates?

A
  • Explain that patient likely has osteoporosis, and this increases risk of fracture with future falls
  • Explain that biphosphonates can reduce the risk of fractures due to osteoporosis
  • Was prescribed due to risk of fracture within the next 10 years

Instructions:

  • Ensure no contraindications (swallowing issues, oesophageal disease)
  • Cognitive and physical capacity to follow instructions?
  • Take with water (always)
  • Stay upright/seated for at least half an hour afterwards
  • Take on an empty stomach
  • 3-5 years
  • Consider IV if more appropriate (intervals of 3 months to a year, outpatient setting)
  • ICE the patient, understand and agreement
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16
Q

What is the equation to calculate blood pressure?

A

Cardiac output (C) x Peripheral vascular resistance (PVD) = Blood pressure (BP)

17
Q

What is the equation to calculate cardiac output?

A

Heart rate (HR) x Stroke volume (SV) = Cardiac output (CO)

18
Q

How is blood pressure autoregulation affected by age?

A

Reduction in baroreceptor sensitivity

  • Normally heart rate increases when blood pressure drops due to baroreceptors
  • This response is blunted in the elderly
  • Worsened due to blood pressure/heart rate lowering drugs
  • Hypertension can damage the baroreceptors
  • This can lead to systolic hypertension and postural hypotension (bad combination, difficult to treat)

Renin-aldosterone system works less effectively

  • Exessive salt waste by kidneys
  • Reduces blood volume
  • Exacerbated by medications (ex ACE inhibitors, diuretics)

Left ventricular diastolic dysfunction
- Leads to inability to increase stroke volume as effectively

Conduction system disease

  • Sinus and atrioventricular nodes age due to:
  • Loss of pacemaker cells
  • Generalised atrophy
  • Amyloid deposits
19
Q

Why are older bones weaker?

A

We reach maximum bone density around age 30

As we age, osteoblastic activity lessens, eventually weakening the trabeculae of bone.

20
Q

How do fractures heal?

A
  • Blood clot forms between broken ends
  • Inflammatory mediators flood to area
  • Connective tissue (cartilage) forms a bridge between ends of broken bone
  • Angiogenesis replaces lost blood vessels
  • Osteogenesis then occurs due to osteoblasts
  • Once the bridge gas been stabilised, osteoclasts and osteoblasts remodel the callus to create normal bone

Osteoporosis

  • Fragility fractures happen due to skeletal ageing
  • Requires less trauma to the bone
  • More prevalent in women due to menopause
  • Vertebral collapse common secondary to osteoporosis
  • Trabecular bone is more metabolically active than cortical bone
  • Cortical bone is normally 80% of bone mass
  • It becomes more porous as you age, increasing fracture risk
  • NOF fractures often have poor prognosis and complications due to osteoporosis
21
Q

Which investigations should be done routinely in elderly patients presenting with falls?

A
  • Blood glucose
  • ECG
  • Gait assessment
  • Lying and standing BP
22
Q

Which manoeuvre is diagnostic of true vertigo?

A

Dix-Hallpike manoeuvre

23
Q

What is the most effective way to minimise falls risk?

A

Exercise programme

  • Reduced risk
  • Reduced rate of falls

Other most effective intervention is a home hazard assessment

Other changes such as cataract surgery, vitamin D supplements and falls clinic reviews reduce the RATE of falls but not the risk.