Geriatrics Flashcards
What is frailty?
Decline in functional/ physiological reserve –> reduced ability to recover
What are the members of an elderly care MDT (10)?
- Geriatrician
- Nurse
- Pharmacist
- Dietician
- OT
- Physio
- SALT
- Psychiatrist
- Social workers
- Community nurse
What is polypharmacy?
5 or more drugs prescribed
What is appropriate polypharmacy?
Medications that are needed
e.g. for MI prevention
What are 2 common causes of inappropriate polypharmacy?
- Sequential prescribing/ prescribing cascades
- Pain management
What are some consequences of having multiple anticholinergic drugs (2)?
- High falls risk
- Altered mental state
What are some side effects of anticholingerics (8)?
Anticholinergic syndrome:
* Can’t see
* Can’t pee
* Can’t spit
* Can’t shit
* Flushing
* Agitation
* Reduced GCS
* AMS
What are some examples of anticholinergics (5)?
- TCAs
- Antihistamines
- Antipsychotics
- Paroxetine (most of all SSRIs)
- Oxybutynin (for bladder control)
What drugs does warfarin commonly interact with to increase bleeding risk/ INR (2)?
- NSAIDs
- Macrolides (clarythromycin/ erythromycin)
What does clopidogrel interact with to reduce the efficacy of clopidogrel?
Omeprazole - increased clothing risk
other PPIs don’t cause interactions
What risk is associated with NSAID and SSRI co-prescription?
Higher risk of GI bleed - prescribe a PPI
What is ACE-i and spironolactone co-prescription associated with (2)?
- High AKI risk
- Hyperkalaemia
What can methotrexate and trimethoprim co-prescription cause?
Severe bone marrow suppression (myelosuppression)
What can statins interact with to increase their levels (2)?
- Macrolide
- Grapefruit juice
How can iron interact with tetracycline?
Reduces levels of tetracyclines
What is pharmacokinetics vs dynamics?
- Kinetics = body on drug
- Dynamics = drug on body
What are the principles of mental capacity act (2005) (5)?
- Best interest of patient
- Assume capacity until proved otherwise
- An unwise decision should be accepted (if they have capacity)
- Least restrictive option
- Support to make own decision (give all info)
What is an independant mental capacity advocate?
Appointed advocate to represent the patient and what is best for them, however cannot make decisions on patients behalf
What is a lasting power of attorney?
Person appointed by patient to make decisions for them if they were to lack capacity
What are the two types of LPA?
- Financial
- Medical
or both
What is an advanced directive?
Written statement by patient detailing what treatment they would/ wouldn’t want to receive, should they lack capacity. This is situation dependant and they cannot demand treatment (only refuse)
What is a court appointed deputy (CAD)?
Person appointed by a court who CAN make decisions for patient
usually used when depute over patient best interest
What is DOLs?
Deprivation of liberties - patient lacks capacity so is unfree to leave hospital/ care home if they posy risk to themselves or others
What is delirium (acute confusional state)?
Acute change in conciseness/ cognition due to underlying pathology
What are the causes of delirium (7)?
- Pain
- Infection
- Nutrition
- Constipation
- Hydration
- Medication
- Environment + electrolytes
What increases the risk of developing delirium (3)?
- Older age
- History of delirium
- Dementia
What are the signs/ symptoms of delirium (7)?
- Memory disturbances (short worse than long)
- Agitated
- Disorientated
- Mood changes
- VISUAL hallucinations
- Disturbed sleep cycle
- Poor attention
How long should symptoms of delirium have gone on for?
Less than 6 months
after this point alternative diagnoses become more likely
What is a key feature of delirium?
Fluctuations in severity of Sx
What medications can trigger/ exacerbate delirium (4)?
- TCAs
- Opiates
- Parkinsons meds
- Benzos
What are the two types of delirium?
- Hyperactive - agitation, delusions/ hallucinations
- Hypoactive - reduced GCS
How is delirium investigated?
- Confusion bloods
- Investigate source of infection (CXR, CT head, urine dip)
- Screening test
What confusion bloods should be done on those with delirium (7)?
- FBC
- U&E
- Calcium
- B12/folate
- TSH
- Glucose
- ESR/CRP
What screening tests can be used for delirium (2)?
- 4As = alertness, AMT4 (age, DOB, name, place), attention (months backward), acute course
- Short CAM (confusion assessment method)
How is delirium treated?
- Orientate = decrease noise, clocks on wall, same staff, family
- 1st = haloperidol (for severe agitation)
What is important to note in treatment of agitation in those with parkinsons?
Usual first line treatment with haloperidol can worsen Sx of parkinsons
* 1st = atypical antipsychotics e.g. clozapine
* 2nd = benzos
What is dementia?
Progressive decline in cognitive function
What are the important features of patients with dementia to differentiate it from delirium (3)?
- Patient is alert
- Cognitive decline over more than 6 months
- Irreversible
What are the 4 common causes of cortical dementia?
- Alzheimers = MC (60%)
- Vascular
- Frontotemporal
- Lewy body
What is the pathophysiology of Alzheimers?
Beta amyloid plaques and tau neurofibrillary tangles accumulation in cortex causes axon damage and reduced Ach
What are some risk factors for Alzheimers (5)?
- Family history/ genetics
- Older age
- Caucasian
- Female
- Downs (inevitable)
What genes are associated with Alzheimers (3)?
- APO-E4
- PSEN 1+2
- APP gene (autosomal dominant inheritance)
What are the signs/ symptoms of Alzheimers (4)?
- Aphasia
- Agnosia
- Aphagia
- Amnesia
What is the pathophysiology of vascular dementia?
Recurrent ischemic events in the brain damage it –> Sx of dementia
What are some risk factors for vascular dementia (8)?
- History of stroke/ TIA
- AF
- Hypertension
- Hyperlipidaemia
- DM
- Smoking
- Obesity
- CHD
What is the typical presentation of vascular dementia?
Stepwise or sudden deterioration of cognitive function
What are some signs/ symptoms of vascular dementia (5)?
- Poor memory
- Speech disturbance
- Difficulty concentrating
- Focal neurological abnormalities
- Emotional disturbance
What is the pathophysiology of Lewy body dementia?
Ubiquitin + alpha synuclein (Lewy bodies) build up in the basal ganglia and cortex
What is the difference between levy body dementia and parkinsons dementia?
- Lewy body = dementia first then Parkinsonism
- Parkinsons = Parkinsonism then dementia
What are some risk factors for levy body dementia (3)?
- Parkinsons
- fHx
- Older
What are some signs/ symptoms of lewy body dementia (3)?
- VISUAL hallucinations
- REM sleep disorder
- Fluctuating levels of consciousness
What is the pathophysiology of frontotemporal dementia?
Pick bodies (tau-neurofibrillary tangles + ubiquitin) in frontal/ temporal lobes
What genes are associated with frontotemporal dementia (3)?
- TDP-43
- C9ORF72
- MAPT gene
When does frontotemporal dementia usually present?
Younger age groups <65
What are the signs/ symptoms of frontotemporal dementia (5)?
- Personality change
- Disinhibition
- Relatively preserved memory
- Insidious onset
- Hyperphagia
What symptom might indicate involvement of temporal lobe in FTD?
Trouble with grammar/ speech
How is dementia investigated (3)?
- Confusion bloods (+ syphilis/ HIV)
- Addenbrookes cognitive examination/ MMSE
- MRI
What MMSE score is suggestive of cognitive impairment?
<25
What are the signs of Alzheimers on MRI (3)?
- Cortical atrophy
- Enlarged ventricles
- Sulcal widening
What are the signs of FTD on MRI?
Frontotemproal deposits
What features are suggestive of vascular dementia on MRI?
White cortical deposits
What feature is suggestive of Lewy body on MRI?
Cortical/ BG deposits
What is a SPECT scan (single positron emission CT) good at differentiating (2)?
- FTD
- Altzheimers
What is a DaT (dopamine transporter) scan good at diagnosing?
Lewy body dementia
How is Alzheimers managed (2)?
- Ach-ase inhibitors (donepezil, galantamine, rivastigmine)
- Memantine (NMDA antagonist)
What medication should NOT be given to those with Alzheimers?
Antipsychotics
What is a contraindication for donepezil?
Bradycardia
What is a side effect of donepezil?
Insomnia
How is FTD treated?
No approved treatments
SSRIs, antipsychotics can be given, Ach-ase inhibitors NOT given
How is vascular dementia treated?
No approved treatments
How is lewy body dementia treated?
Same as Alzheimers - Ach-ase inhibitors, memantine, NO antipsychotics
What are some other causes of dementia (8)?
- CJD - rapid dementia within 1 year
- HIV associated neurological disorder
- Normal pressure hydrocephalus (wet, wacky, wobbly)
- Alcohol (Korsakoff)
- Wilsons (auto recessive, high copper, keiser fleisher rings)
- Neurosyphilis
- Parkinsons
- Huntingtons
What is pseudodementia?
Dementia caused by depression (global memory loss, MMSE often normal)
What would be suggestive of delirium rather than dementia (5)?
- Shorter onset
- Impaired consciousness
- Fluctuating Sx
- Visual hallucinations
- Agitation
What are some risk factors for falls (7)?
- Weakness
- Vision problems
- Balance/ gait disturbance (e.g. parkinsons, RA)
- Polypharmacy
- Incontinence
- Postural hypotension
- Cognitive impairment
How should a patient who has fallen be assessed (4)?
- Circumstances before, during and after fall
- Barthel index (assess ADLs)
- Rockwood clinical frailty score
- Fall risk - FRAT score
How should a fall be investigated (4)?
- Bloods
- L/S BP
- ECG
- CXR + CT head
What bloods are important in those who have fallen (7)?
- FBC
- U&E
- eGFR
- CK
- Bone profile
- B12/folate
- Vitamin D
How is a fall treated (4)?
- Medication review
- Physio + OT
- Home assessment
- Eye check
What are some complications of a fall (4)?
- Fracture (esp HIP)
- Subdural haematoma
- Rhabdomyolysis
- Pneumothorax
What is rhabdomyolysis?
Muscle breakdown and release of contents into bloodstream
What is rhabdomyolysis common after a fall?
Trauma
What are some risk factors for rhabdomyolysis (2)?
- Steroid use
- Hyperthermia
What are the signs/ symptoms fo rhabdomyolysis (2)?
- Muscle pain
- Coca-cola urine
What blood results would be suggestive of rhabdomyolysis (3)?
- Raised creatinine kinase
- Raised myoglobin
- Hyperkalaemia
How is rhabdomyolysis treated (2)?
- IV fluids
- IV sodium bicarbonate
to prevent AKI
What medications commonly cause falls in elderly (6)?
- BP meds
- Nitrates
- Anticholinergics
- Antidepressants
- Benzos
- Opiates
What are the criteria for a diagnosis of postural hypotension (3)?
- Drop in 20mmHg or more union standing - systolic BP
or - Drop in 10mmHg or more upon standing - diastolic BP
within 3 minutes of standing
What is the pathophysiology of postural hypotension?
Impaired neuro-cardiac baroreceptor reflex + decreased BV plasticity –> blood pools in legs + low BP
What are some causes of postural hypotension (5)?
- Heart failure/ AF
- Autonomic dysfunction e.g. diabetes, parkinsons
- Medications (esp. BP meds)
- Alcohol
- Addisons
What are the signs/ symptoms of postural hypotension (5)?
- Lightheadedness
- Syncope
- Dizzy
- Palpitations
- Visual changes
How should postural hypotension be investigated (3)?
- L/S BP
- ECG
- Bloods
How should postural hypotension be managed (3)?
- Conservative = stand slowly, increased water intake
- Midrodine (alpha 1 agonist)
- Fludrocortisone (aldosterone)
What is the pathophysiology of a pressure sore?
Pressure –> reduced blood flow + friction –> erosion of tissues
What are the most common sites of pressure sores (2)?
Bony prominences (e.g.):
* Sacrum
* Heel
What are some risk factors for pressure sores (4)?
- Immobility
- Malnourishment + dehydration
- Incontinence
- Pain (causes lack of mobility)
What scoring system is used to classify the risk of developing pressure sores?
Waterlow score
What are the criteria for grading the different severities of pressure sores (4)?
- Non blanching erythema + intact skin
- Mucosal breach (only affecting epidermis/ dermis)
- Full thickness skin involvement (can affect SC tissue)
- Bone/ muscle/ joint involvement (through fascia)
How are pressure sores investigated (2)?
- Bloods
- Sore swab (MC&S)
How are pressure sores prevented (2)?
- Repositioning
- Barrier cream
How are pressure sores managed (4)?
- Pain ladder
- IV fluclox (if cellulitis suspected)
- Wound dressing
- Surgical debridement (grade 3/4)
What is malnutrition?
Nutritional defect with functional/ biological effects
What are some risk factors/ causes for malnutrition (6)?
- Older age
- Eating disorders
- Malabsorption (e.g. IBD, crohns)
- Poor diet
- Dysphagia (e.g. stroke)
- Cancer
How can the risk of malnutrition be screened for?
MUST (malnutrition universal screening tool)
What are the 3 criteria in the MUST tool?
- BMI
- Unintended weight loss
- Likely to not be able to eat properly for 5+ days
What do the different scores in the MUST tool mean?
- 0 = nothing
- 1 = observe
- 2+ = dietician review
What are the signs/ symptoms of malnutrition (5)?
- Anaemia (fatigue…)
- Poor wound healing
- Dehydration
- Constipation
- Reduced urine output
How is malnutrition investigated (3)?
- Bloods
- L/S BP
- ECG
How is malnutrition managed (4)?
- Fortispis + increase dietary intake
- Dietician review
- Enteral feeding methods
- Parenteral feeding
What would a dietician assess in a review (4)?
- Swallow
- Monitor electrolytes (reseeding syndrome)
- Advise diet
- Advise feeding method
What are the types of enteral feeding (3)?
- Nasogastric/ nasojejunal feeding
- Percutaneous endoscopic gastrostomy
- Percutaneous endoscopic jejunostomy
How long can a NG tube stay in for?
30-60 days
What is an paraenteral feeding method?
PICC feeding
What are some complications of malnutrition (5)?
- Osteoporosis
- Falls
- Refeeding syndrome
- CV (bradycardia, arrhythmias)
- Poor immunity
What is osteoporosis?
Reduced bone mineral density
What is the diagnostic criteria for osteoporosis?
Femoral head BMD < -2.5 on DEXA scan
What causes osteoporosis (9)?
- Steroids
- Hyperthyroid/ parathyroid
- Alcohol + smoking
- Thin
- Testosterone (low)
- Early menopause
- Renal/ liver failure
- Erosive bone disease (e.g. RA)
- Drugs
What drugs commonly cause osteoporosis (other than steroids) (3)?
- AEDs (e.g. phenytoin)
- PPIs
- SSRIs
+ steroids obviously
How is osteoporosis investigated (2)?
- Bloods
- DEXA scan
X-ray to look for fractures
What does the T-score compare the BMD to?
Healthy 30 year old
What is the Z score?
BMD compared to average for same demographic
What are the different T-scores suggestive of? (3)
- > -1 = normal
- -2.5 –> -1 = osteopenia
- < -2.5 = osteoporosis
What score assess the risk of people with osteoporosis?
FRAX score
What specific risk does the FRAX score assess?
Risk of major osteoporotic fracture in next 10 years (in 40-90 year old)
What are the different risk categories according to FRAX score (3)?
- < 10% = low risk –> follow up
- 10-20% = medium risk –> DEXA scan
- > 20% = high risk –> treat + DEXA
How is osteoporosis managed (5)?
- ADCAL D3
- Bisphosphinates = 1st line
- Denosumab
- Raloxifene
- HRT
When should a patient be immediately started on osteoporosis meds without the need for a DEXA scan?
Fragility fracture in patients over 75
What are two options for bisphosphinates?
- PO alendronate
- IV zoledronate (yearly)
How should oral alendronate be taken?
- Empty stomach (30 min before or 2 hour after food)
- Stay sat for 30 minutes
- Take with a glass of water
What are two side effects of alendronate (2)?
- Gord
- Osteonecrosis of the jaw
How does Denosumab work?
Inhibits RANK-L
RANK-L increases osteoclasts activity and decreases osteoblast activity
How does raloxifene work?
Oestrogen agonist at bone (inhibitor at endometrium)
What is incontinence?
Involuntary enuresis
What are the types of incontinence (5)?
- Urge/ overactive bladder
- Stress
- Mixed
- Overflow
- Functional
What are the features of urge incontinence (2)?
- Key in door syndrome
- Nocturnal Sx
What triggers stress incontinence?
Valsalva manoeuvres
What is overflow incontinence?
Lower urinary tract obstruction e.g. BPH –> post void retention –> unexpected leaks
What are some risk factors for incontinence (9)?
- Female
- Multiparity
- Older age
- Abdo surgery
- BPH
- Spinal trauma (neurogenic bladder)
- Constipation
- Medications (e.g. diuretics)
- Ketamin use
How is incontinence investigated (5)?
- Bladder diary
- Vaginal exam
- Urine dip
- Urodynamics
- Imaging?
How is urge incontinence treated (3)?
- Bladder retraining (6 weeks)
- Oxybutynin (antimuscarinics)
- Mirabegron (for older people - not anticholinergic)
How is stress incontinence treated (3)?
- Pelvic floor exercises (for 3 months)
- Surgery
- Duloxetine
What are the two types of urine retention?
- Acute
- Chronic
What is acute vs chronic urine retention in terms of volume?
- Acute > 600ml
- Chronic 1000-1500ml
What are some causes of urinary retention (3)?
- BPH/ prostate cancer
- Anticholinergics, TCAs, opioids
- Faecal impaction
How is urinary retention investigated (4)?
- Urinalysis
- PR exam (for faecal impaction/ enlarged prostate)
- Bloods
- USS bladder
How is urinary retention treated (2)?
- Catheterise
- Analgesia
What are 3 complications of urinary retention?
- Hydronephrosis
- Pyelonephritis
- AKI
What time period does palliative care usually refer to?
Less than 3 months left to live
What are the principles of palliative care (4)?
- Maximise QOL
- Set affaris in order (e.g. will)
- Address spiritual needs
- Look after family
What is often first line for pain in palliative care?
Morphine/ other opioids
What are some examples of opioids other than morphine (4)?
- Codeine (50% oral bioavailability)
- Tramadol
- Oxycodone
- Diamorphine
What is first line for agitation in palliative care?
Haloperidol
when terminal = midazolam
How are secretions treated in palliative care (2)?
- Hyoscine
- Glycopyrronium
What is first line for N+V in palliative care?
Metoclopramide
How is dyspnoea treated in palliative care (3)?
- Opioids
- Midazolam
- O2
How can medications be delivered in palliative care if patient is unable to take them orally?
Syringe diver
What is hypothermia?
Core temperature < 35
What are the signs/ symptoms of hypothermia (5)?
- Shivering
- Cold + pale skin
- Slurred speech
- Tachypnoea + tachycardia
- Confusion
How should hypothermia be investigated?
- Take temperature
- ECG
What might an ECG show for those with hypothermia?
Osborn-J waves
small humps at end of QRS
How is hypothermia treated (3)?
- ABCDE
- External reheating
- Warm IV fluids
What is considered hyperthermia?
Core body temperature > 40
Who is typically affected by hyperthermia (2)?
- Young patient due to exertion
- Older patient due to temperature
What are the signs/ symptoms of hyperthermia (6)?
- Tachycardia
- Hot flushed skin
- AMS + confusion
- Muscle cramps
- Seizures
- Hypotension
How should hyperthermia be investigated (3)?
- Take temperature
- ECG
- BP
How is hyperthermia managed (3)?
- ABCDE
- IV fluids
- COOLING
What muscles are commonly affected by nocturnal cramps (2)?
- Claf
- Feet muscles
How can nocturnal cramps be treated?
Quinine
SE = ECG changes, hypotension, metabolic acidosis
What care packages can the NHS provide (4)?
- Home apparatus (e.g. handrails, ramps)
- Allowances (e.g. PIP, attendance allowance)
- Carers up to 4 times per day
- Continued NHS healthcare (e.g. palliative care)