3rd year key points Flashcards
sensory impairment
when one or more of a person’s senses are no longer normal
macular degeneration
wet - severe, quick
dry - gradual loss of central vision
glaucoma
rise in IO pressure
lose peripheral vision
causes of cataracts
senile
traumatic
disease associated
diabetic retinopathy
black spots and blurry
hemianopia
blindness in one half of the visual field
stroke
causes of hearing impairment
build up of cerumen
ototoxic drugs
otosclerosis
perforated eardrums
hearing loop
T
magnetic, wireless signal
cuts out unwanted background noise
impairment
something doesn’t work
any loss or abnormality of psychological, physiological or anatomical structure or fct
disability
functional performance
a restriction/lack (resulting from an impairment) of ability to perform an activity in a manner or within the range considered normal for a human being
handicap
disadvantage, resulting from impairment/disability that limits/prevents fulfilment of a role that is normal for that individual
- broader social and psychological consequences
activity limitation
difficulty encountered by an individual in executing a task/action
participation restriction
problem experienced by an individual in involvement in life situations
characteristics of service use
fewer visits, longer intervals limited access difficulty communicating pain financial emergency care rather than planned history of extractions tx with GA
important piece of legislation relating to capacity
AWI Act 2000 (2010) part 5
what should you always assume with capacity?
that someone has it
what is capacity?
ability to: - act - make decision (reasoned) - communicate - understand - retain memory action/decision specific residual capacity may fluctuate
principles of AWI Act
benefit - without tx benefit not possible
minimum necessary intervention - least restrictive
take account of wishes of adult
consultation with relevant others
encourage adult to exercise residual capacity
2 types of PofA
continuing
welfare
how are PofA made?
granted by adult while they still have capacity
registered w Public Guardian
ceases on day they die
continuing PofA
finances and property
welfare PofA
health and personal welfare
WG orders
when adult can’t choose a PofA e.g. born with a severe LD
need 2 medical reports
continuous management of welfare and financial matters
usually 3yrs
how long do WG orders usually last?
3yrs usually
certificate of incapacity
only valid for your area of practice
even if WG/WPofA still need CofI
GMP/consultant, GDP if additional training
detailed - exact
- one for check ups for 3yrs where no capacity likely to be regained
- individual tx course
photocopy it in notes
schizophrenia
disorders of thought (delusions) and perception (hallucinations)
schizophrenia aetiological factors
cannabis - tachycardia
neurotransmitter imbalance
genetic predisposition
triggers - stress
clozapine and schizophrenia
atypical antipsychotic
neutropenia - monitor
don’t do smoking cessation - can lead to severe toxicity - clozapine levels in plasma changed
why is dentist-led sedation contraindicated in pts with active uncontrolled psychiatric disease?
may have unpredictable reactions and increased tolerance
russel sign
calluses on knuckles due to repeated self-induced vomiting
signs of SS
mirror sticks to mucosa
food residues in oral cavity
cracked tongue
ocular symptoms
SS risks
oral infections
malignant change
altered taste
reasons for dry mouth
meds autonomic dysfct (endocrine) anxiety, stress dehydration starvation chemo and radio systemic conditions
cancer - pre-tx priorities
OH reduce tx complications - avoid chemo interruption - avoid mucositis exacerbation - remove potential sources of infection reduce post-tx complications - prevention - plan rehab
role of dentist for cancer pt
early detection pre-tx assessment - radiographs - necessary tx - pre-tx scaling dentate pts - imps for soft splints - start F therapy
during cancer tx role of dentist
ulceration
infection
emergency tx
pain relief for mucositis
opioid analgesia - severe pain
pathogenesis/stages of mucositis
inflammatory/vascular - cytokines released
epithelial - atrophy
ulceration/bacterial - full thickness erosion
healing - epithelium renewal
grading of mucositis
0-4 WHO
mucositis grade 0
none
mucositis grade 1
mild
soreness and erythema
mucositis grade 2
mod
erythema, ulcers
solid diet tolerated
mucositis grade 3
severe
oral ulcers
liquid diet only
mucositis grade 4
oral feeding impossible
requires parenteral nutrition
management of mucositis
silk brushes
CHX gel (in clean mouth as won’t penetrate biofilm)
avoid smoking, alcohol, tea and coffee, v hot/spicy
topical lignocaine
caphasol - artificial saliva conc CaPO4
tea tree MW - check not allergy to aloe vera
ice during chemo
SEs of chemo
alopecia nausea and vomiting anorexia bone marrow suppression mucositis transient dry mouth coagulation defects reduced WBCs
how does chemo work?
cytotoxic - interact with cancer cell DNA/RNA and affect a phase of life cycle
what % of chemo pts get mucositis?
around 75-80%
when does mucositis usually appear with chemo?
7-14 days after initiation of chemo
describe the general trajectory of chemo SEs
systemic but more transient
describe the general trajectory of radio SEs
chronic, progressive and localised
why is radio fractionated?
only kills dividing cells
dental SEs of radio
hyposalivation hypogeuesia radiation caries fungal infections trismus ORN
why is trismus a SE of radio?
replacement fibrosis of MofM following progressive end arteritis of affected tissues with decrease in blood supply
irreversible
ORN as a SE of radio?
dead bone shards
avascular necrosis
endarteritis obliterans - progressive fibrosis
what dose is the risk of SEs greater from radio?
> 60Gy
cancer - IO reactivation of herpes simplex
so immunocompromised clinically atypical painful oral ulceration, sudden onset extensive, slow healing and aggressive ulceration on palate and tongue dorsum
xerostomia management
palliative
water
SF gum
tooth mousse
cancer post-tx dentist roles
rehabilitation
prevention
monitoring
dentist pre-tx for cancer - getting pt dentally fit
if no time to restore - ext
can’t RCT - can’t guarantee
ask pt for GP and MDT team details at 1st appt
if pt refuses ext - explain risks, note it down, contact oncologist
MRONJ
exposed bone (not healed) at 8wks
incidence of MRONJ
overall risk small <1%
what is Parkinsons?
progressive neurodegenerative
basal ganglia - degeneration of dopamine receptors
aetiology of Parkinsons
approx 5% genetic most idiopathic toxins? cerebrovascular disease head trauma drug induced
how is Parkinsons diagnosed?
clinical diagnosis
Parkinsons S+S
rest tremor
- reduced by action
- increased by emotion/stress
which type of dementia is Parkinsons associated with?
Lewy body dementia
tx of Parkinsons
drug therapy when fct disability
Levidopa - non-ergot dopamine agonist
Carbidopa - prolongs action
late management - reduce motor fluctuation
outcome of Parkinsons
approx 10-15yrs death usually due to bronchopneumonia