Special Care Flashcards
What is the equality act 2010’s definition of disability?
A person has a disability if they have a physical or mental impairment and the impairment has a substantial effect on their ability to perform normal day to day activities
What are the oral features of dentinogenesis imperfecta? (4)
- teeth are weaker
- bulbous crowns
- reduced root length
- obliteration of pulp chamber
What are the symptoms of hunting tons? (4)
- general lack of coordination and unsteady gait
- movements become worse
- chorea writhing movements
- problems swallowing, speaking and breathing
What are the symptoms of spina bifida?
- weakness or total paralysis of legs
- bowel and urinary incontinence
- loss of skin sensation
- hydrocephalus
What are the symptoms of cerebral palsy? (4)
- muscle stiffness or floppiness
- muscle weakness
- random and uncontrolled movements
- balance and coordination problems
What are the symptoms of motor neurone disease? (3)
- causes muscular atrophy, weakness and spasticity
- no sensory loss
- dysphagia and drooling occur
What is parkinsons disease due to?
Degeneration of the pigmented cells of the substantial nigra leading to dopamine deficiency
What are the symptoms of parkinsons disease? (4)
- tremor in arms and hands
- rigidity on movement
- slow movements and restlessness
- expressionless face and stooped posture
What are the issues of dental treatment in parkinsons? (4)
- tremor when using handpicks
- ability to cooperate for treatment
- difficulty communicating
- hyper salivation
What is multiple sclerosis?
Chronic relapsing CNS disease affecting the portico spinal tract. It affects the myelin sheaths
What are the symptoms of multiple sclerosis?
- blindness or visual disturbance
- weakness or paralysis of limbs
- ataxia
- dysphagia
What are the 2 types of spinal cord injury?
Tetraplegic- damage to spinal cord in neck. Affects all 4 limbs and torso
Paraplegic- damage to mid/lower part of back. Affects legs and lower body
What is the most common cause of down syndrome?
Trisomy 21
What are the physical features of down syndrome? (4)
- short stature
- widely spaced upward slanting eyes
- weight gain
- brush field spots
What are the oral features of down syndrome? (4)
- large tongue
- cleft lip and cleft palate
- malocclusion
- missing teeth
Why is the dental management of fragile X syndrome difficult? (3)
- short attention span
- hyperactivity
- behavioural disorders similar to autism
What are the features of cri du chat syndrome? (4)
- high pitched cry
- microcephaly
- micrognathia
- wide set eyes
What are the characteristics of autism spectrum disorder? (4)
- poor social skills
- lack of interpersonal relationships
- delayed speech and language
- ritualistic compulsive behaviour
What are the features of aspergers syndrome? (3)
- repetitive behaviour
- severe social problems
- clumsy movements
What are the symptoms of autism? (4)
- obsessional desire to follow routine
- self mutilation
- sensitivity to touch, smell and sound
- avoid eye contact
What are the oral findings in autistic patients? (4)
- bruxism
- traumatic lesions
- poor oral hygiene
- poor attendance
What is the dental management of autistic patients? (4)
- patient is not kept waiting
- short quiet visit with the same staff
- avid aspirator high speed etc
- have a parent or carer present
What are the causes of visual impairment? (6)
- glaucoma
- cataract
- macular degeneration
- diabetic retinopathy
- trachoma
- dry eye syndrome
What are the symptoms of a visual impairment? (4)
- reduction or loss of vision
- eye pain
- burning sensation
- gritty feeling
What is the result of wet macular degeneration? (3)
- causes severe sight loss in a matter of months
- growth of nerve vessels under retina which then break and leak into the macula
- rapid loss of central vision
What are the predisposing factors of dry macular degeneration? (2)
- hereditary element
- myopia
What is dry macular degeneration? (2)
- gradual loss of central vision
- person becomes unable to recognise people because they cannot see their faces clearly
What are the causes of retinopathies? (3)
- diabetes
- hypertension
- renal disease
What is the treatment and prevention of sensory impairment? (5)
- regular eye exams
- protect eyes from sun
- know family history
- seek treatment quickly
- stop smoking
What is hemianopia caused by?
Stroke
What are the common causes of a hearing impairment?
- build up of cerumen
- medications and the use of ototoxic drugs
- osteosclerosis and bony overgrowth of stapes
- perforated ear drums
What are the symptoms of a hearing impairment? (4)
- inactivity
- reduced development of speech and language
- deterioration of speech
- instability
What are the clues to a hearing impairment? (4)
- unawareness of surroundings
- failure to respond to sound
- asking for sentences to be repeated
- spending time alone
What is the treatment and prevention of hearing impairments? (4)
- immunisation
- avoidance of some drugs
- reducing occupational exposure
- hearing aids
What can you do to help people with sensory impairments? (4)
- speak clearly but not too slowly and do not exaggerate lip movements
- use natural facial expressions and gestures
- use plain language
- be patient and take your time
What is dementia?
A collection of symptoms that include a decline in memory, reasoning and communication skills. It is the graded loss of skills needed to carry out daily activities
What is found in alzheimers disease? (4)
- amyloid plaques (around brain cells)
- tangles tau protein (tangled within brain cells)
- loss of connections between neurones
- decrease in acetylcholine
What is the percentage of dementia cases in:
a) alzheimers
b) vascular
c) mixed
d) lewy body
a) 62%
b) 17%
c) 10%
d) 4%
What is vascular dementia caused by?
Furring up of the small blood vessels in the brain
What is lewy body dementia?
Abnormal deposits of protein in nerve cells that depend on which part of the brain is affected
What is lewy body dementia associated with?
Parkinsons disease
Who does front temporal dementia affect?
People slightly younger
What are the symptoms of front temporal dementia? (5)
- personality change
- short temperedness
- agression
- mood swings
- sexually inappropriate behaviour
What are the medical risk factors for dementia? (4)
- type II diabetes
- hypertension
- obesity
- depression
What lifestyle factors can cause dementia? (4)
- physical inactivity
- smoking
- unhealthy diet
- excessive alcohol
How do you reduce the risk factors for dementia? (4)
- keep mentally active
- keep physically active
- eat healthily
- reduce alcohol consumption
What is the treatment for dementia? (4)
- counselling may delay residential care by up to 1 year
- reducing cardiac risks may halt deterioration of vascular type dementias
- NSAIDS may slow progression
- vitamin E
What is the drug treatment for alzheimers? (4)
- donepezil
- glantamine
- rivastigmine
- memantine
What is capacity? (5)
- to understand broadly what the treatment is its purpose and nature and why it is being proposed
- to understand its main benefits, risks and alternative to be able to make a choice
- to understand what the consequences of not having the treatment will be
- to retain the information given long enough to weight it up and make a decision
- to communicate that decision
What things are needed for consent to be given? (5)
- pt must be informed
- consent must be given freely
- consent has to be given by a pt that has capacity
- ability to make decision
- pt has to be able to act on the basis of the information
What is the procedure for having a power of attorney? (3)
- similar procedure to making a will
- certified by a lawyer or medical practitioner
- registered with the public guardian
A person is incapable when they cannot what? (5)
- act
- make a decision
- communicate decision
- understand a decision
- retain the memory of a decision
Who do you contact if concerned about financial powers?
Office of public guardian
Who do you talk to if you need advice about an adult at risk of harm?
Mental welfare commission
What are the principles of adult safeguarding? (6)
- empowerment
- prevention
- proportionality
- protection
- partnership
- accountability
What can occur to a patient after head and neck surgery? (5)
- altered anatomy
- altered appearance
- difficult access for OH
- trismus
- fistula
What does hyperbaric oxygen do and what are the disadvantages of it?
Used for ORN and increases oxygen to damaged bone. Promotes healing
The disadvantages are cost and compliance
How does chemotherapy work? (4)
- uses drugs to kill rapidly dividing cells
- interferes with mitosis
- interferes with apoptosis
- interferes with tumour cell DNA
What are the oral side effects of chemotherapy? (4)
- mucositis
- infection
- bleeding
- temporary xerostomia
What is the management of mucositis? (4)
- soft splints
- caphosol
- low level laser therapy
- HPT before chemo starts
What are the causes of congenital cardiac conditions? (2)
- environmental
- genetic
What are the types of congenital cardiac conditions? (2)
- tetralogy of fallot (cyanotic)
- ventricular septal defect (acyanotic)
What are the oral findings of congenital cardiac conditions? (4)
- delayed eruption of both dentitions
- increased positional abnormalities
- enamel hypoplasia
- vasodilation of pulp
- increased periodontal disease
- increased caries
What are the dental considerations for congenital cardiac conditions? (4)
- bleeding tendency
- anti coagulated
- risk of infective endocarditis
- hypertension with adrenaline containing products
What is ischaemic heart disease?
The result of progressive myocardial ischaemia due to persistently reduced coronary blood flow
What are the causes of ischaemic heart disease? (2)
- atherosclerosis
- hypertension
What can be linked to atherosclerosis? (3)
- smoking
- lack of exercise
- obesity
What are the causes of ischaemic heart disease? (2)
- angina
- myocardial infarction
What are the oral findings of angina? (4)
- rare cause of pain in mandible
- more severe caries
- more severe periodontal disease
- drugs may cause lichenoid reaction, gingival swelling, angioedema and ulcers
What is hypertension?
BP consistently over 140/90mmHg
What are the causes of hypertension? (2)
- renal disease
- endocrine conditions
What is the treatment of hypertension? (5)
- lifestyle changes
- diuretics
- b blockers
- statins
- aspirin/clopidogrel
What are the side effects of hypertension medications that can impact upon oral health? (7)
- xerostomia
- salivary gland swelling
- lichenoid reactions
- angio oedema
- gingival hyperplasia
- sore mouth
- paraesthesia
What is cardiomyopathy?
A group of conditions that affect the structure of the heart muscle and its ability to pump blood around the body
What are the causes of cardiomyopathy? (4)
- genetic
- viral infections
- autoimmune
- medications
What is the treatment of cardiomyopathy? (4)
- b blockers anticoagulants and diuretics
- pacemakers
- surgery
- transplant
What are the oral findings of chronic kidney disease? (4)
- osseous lesions
- dry mouth
- metallic taste
- halitosis
What is the dental management for chronic kidney disease? (4)
- bleeding tendency
- infections are poorly controlled
- antibiotic prophylaxis
- impaired drug excretion
What is the dental treatment for patients with renal dialysis? (4)
- for extractions FBC and coagulation screen
- best time for treatment is day after ahem dialysis
- safest treatment is LA
- avoid aspirin and other NSAIDS
What is the dental impact of a renal transplant? (4)
- lifelong immunosuppression
- gingival hyperplasia
- increased risk of oral tumours
- candidiasis and herpes simplex
What is the dental impact for a pt with asthma? (5)
- inhalers may cause candida infection
- dry mouth
- anti asthmatic drugs may lower salivary pH
- periodontal infiammato is greater in asthmatics
- avoid aspirin and ibuprofen
What are the dental aspects of COPD? (4)
- reduce LA dose with adrenaline
- avoid benzodiazepine and nitrous oxide
- short appointments, upright position
- may not tolerate rubber dam
What is cystic fibrosis?
The build up of sticky mucous in lungs and digestive tract. Don’t absorb nutrients well and need to eat more calories to avoid nutrition
What is the dental treatment on patients with platelet disorders? (5)
- liase with haematology
- FBC prior to procedure
- tranexamic acid
- steroids
- platelet transfusion
What does tranexamic acid do?
Used to treat or prevent excessive blood loss.
Antifibrinolytic action
What is the treatment for von willebrands disease?
- tranexamic acid
- desmopressin to raise vwf
What is the dental treatment for haemophilia? (6)
- contact haematology
- cons can be carried out in practice but avoid IDB
- extractions need to be carried out with haematology
- factor cover
- surgicel
- sutures
What type of drugs affect bleeding? (3)
Anti platelet drugs- aspirin and clopidogrel
Anticoagulants- warfarin and heparin
Newer anticoagulants- dabigatran, apixaban, rivaroxaban
What are the dental aspect of myeloma? (6)
- root resorption
- loose teeth
- mental anaesthesia
- pathological fracture
- anaemia
- infection
What are the dental aspects of leukaemia? (7)
- crowding out of normal blood cells by leukaemic cells
- anaemia
- bleeding tendencies
- susceptibility to infections
- septicaemia from oral infections
- mucosal pallor
- ulceration
What are the types of anxiety disorders? (6)
- phobic anxiety disorders
- panic disorders
- generalised anxiety disorders
- post traumatic stress disorder
- adjustment disorders
- hypochondriac disorders
What are the three types of phobias?
- specific phobia
- social phobia
- agoraphobia
What is agoraphobia?
A well defined cluster of phobias that involve being away from perceived safety
What are the stages of behavioural models of phobias and anxiety? (2)
- classic conditioning
- operant conditioning
What are the trigger zones for anxiety and gagging? (5)
- palatoglossal and palatopharyngeal folds
- base of tongue
- palate
- uvula
- posterior pharyngeal wall
What is the applied tension method for needle phobia?
Muscles in arms, legs and torso tensed but not relaxed for 10-15 seconds at a time. Helps to prevent a drop in blood pressure
Why is sedation safe? (3)
- pt is conscious and communication is maintained
- pt spontaneously maintains own airway
- cardio respiratory function is normal and there is minimal depression of the CVS/RS
What are the clinical effects of benzodiazepines? (5)
- anxiolysis
- anticonvulsant
- sedation
- amnesia
- muscle relaxation
How does the patient recover from sedation? (2)
- redistribution of the drug from the CNS into body fat
- uptake and metabolism of the drug by the liver and elimination by the kidneys
What is the mode of action of GABA? (3)
- activation of the benzodiazepine receptors enhances the flow of chloride ions
- chloride ions enter the cell making the resting membrane potential more negative
- this makes it even more difficult to fire an action potential so reducing polysynaptic transmission and depressing the uptake of sensory information
What is an advantage of midazolam and diazemuls?
Non irritant to veins
Why are diazemuls not well suited to short dental procedures?
Due to there long recovery period and possibility of rebound sedation
What are the advantages of midazolam? (4)
- faster acting
- 2 and a half times more potent than diazepam
- produces more predictable amnesia
- once in the bloodstream it becomes lipid soluble at physiological pH. Can then readily penetrate the blood brain barrier
What are the disadvantages of midazolam? (4)
- no analgesia
- for a short time after infection laryngeal reflexes may be dulled
- too rapid injection can cause respiratory depression and apnoea
- possibility of disinhibition
What are the side effects of benzodiazepines? (4)
- respiratory depression
- cardiovascular effects
- drug interactions
- hallucinations
What are the effects of ageing on sedation? (4)
- altered drug distribution
- altered hepatic metabolism
- altered renal excretion
- less drug is needed and slow titration
What are the advantages of propofol? (3)
- rapid onset of action
- rapid clearance
- distribution and metabolism
What are the problems with propofol? (4)
- pain on injection
- expensive
- narrow margin of safety between conscious sedation, deep sedation and anaesthesia
- not licensed for dentists to use
What is in ametop gel?
4% amethoaine in a 1.5g tube
What is the calculation for BMI?
Weight/height squared
What is oxygen saturation?
The percentage of haemoglobin which is bound to oxygen
What are the contraindications for IV sedation? (6)
- allergy to benzodiazepines
- pregnancy
- age under 12 years
- alcohol/ drug dependency
- psychiatric illness
- liver or kidney disease
What are the limitations of conscious sedation? (4)
- individual response
- extreme anxiety
- hysterics
- resistance to drugs
What are the instructions for sedation? (6)
- written pre and post sedation instructions
- need for responsible adult escort
- transport by private car or taxi
- starve 4 hours before appointment
- take normal medications
- no driving, operating machinery, signing important documents, alcohol for 24 hours
What is involved in the pre operative equipment check for IV sedation? (4)
- oxygen cylinders full and tested
- emergency drug box present and correct
- monitoring equipment is working
- dental equipment and suction is working
What drugs do you use for IV sedation? (3)
- midazolam 5ml ampoule
- sterile saline in 2ml syringe
- flumazenil 5ml ampoule
How do you prepare a patient for IV sedation? (4)
- tourquinet/nurse squeeze to occlude venous return
- select a suitable vein
- straight thick vein
- encourage vein to fill
What makes a good vein for IV cannulation? (6)
- visible
- palpable
- long
- straight
- wide
- no infection in area
How do you do IV cannulation? (5)
- swab with 2% chlorohexidine in 70% alcohol and dry for 30 seconds
- hold the hand firmly and stretch the skin
- cannula 22G
- bevel up the way, 10-15 degree angle pierce the skin
- primary flashback, secondary flashback
What are the problems with cannulation? (4)
- difficulty locating
- veins collapse
- veins tissue
- cannula kinks
How do you administer midazolam?
- inject slowly
- pt should be warned of a cold sensation as the drug tracks up the arm
- start with 1mg and wait 60 seconds
- stop immediately if the patient complains of pain radiating down the forearm or towards the fingers as this indicated accidental entry into an artery
- further increments of 1mg are then given every 60 seconds
- gradually titrate until satisfactory end point
- don’t give any more than 10mg
What are the signs of a sedation end point? (4)
- relaxed demeanour
- slowed response to commands
- slurring of speech
- eves sign
What will happen if the oxygen drops to below 90%?
Means inhibited respiratory or cardiovascular activity. Can result in cardiac arrest and brain damage
If the oxygen saturation drops to below 90% and you have asked the patient to take a few deep breathes and the problem still persists what do you do?
Give 100% oxygen via nasal cannula at 2-4 litres/min
What do you do if there is persistent oxygen saturation below 90% that is not corrected by breathing and giving oxygen? (3)
- reverse sedation with flumazenil
- bag and mask ventilation
- summon help
What is the definition of premedication?
Preliminary administration of a drug preceding a diagnostic, therapeutic or surgical procedure as an antibiotic or anti anxiety agent
What are the long term side effects of benzodiazepines? (3)
- tolerance
- dependance
- withdrawal symptoms
Name 4 types of benzodiazepines
- diazepam
- temazepam
- midazolam
- flumazenil
What are the drug interactions of diazepam? (3)
Antibacterials- isonzid inhibits metabolism. Rifampicin increases metabolism
Antivirals- ritonavir
Proton pump inhibitors- omeprazole
What are the advantages of premedication? (4)
- patient become relaxed enough to be able to attend the dental surgery
- helps the patient to sleep the night before
- helps nervousness and anxiety before undergoing an operation
- produces some muscle relaxation and dryness of secretions post op
What are the disadvantages of premedication? (3)
- poor compliance
- have to be careful with your prescribing e.g the young and elderly
- tolerance, dependance and withdrawal symptoms
What are the indications for premedication? (3)
- very anxious patients
- patients where sedation is contraindicated
- to take the edge of before more complex and long procedures
What are the contraindications for diazepam? (4)
- hepatic impairment
- renal impairment
- pregnancy
- breast feeding
What are the cautions for diazepam? (4)
- avoid prolonged use
- reduce dose in debilitated patients
- reduce dose in elderly
- respiratory disease
What is the definition of oral sedation?
Sedative drugs given produce a state of depression of the central nervous system enabling treatment to be carried out. Verbal contact with the patient is maintained
What are the advantages of oral sedation? (4)
- easy administration
- avoids cannulation
- decreased incidence and severity of adverse reactions
- learning disabled patients
What are the disadvantages of oral sedation? (4)
- patient compliance
- still need to cannulate
- inability to titrate
- prolonged latent period
What are the indications for oral sedation? (4)
- needle phobic patients
- unsuitable for inhalation sedation
- learning disabled patients
- poor venous access
What are the contraindications for oral sedation? (3)
- very poor venous access
- very poor cooperation
- pt cannot follow pre and post sedation instructions
What is the technique for oral sedation? (3)
- assess patient to give consent prior to day of sedation
- oral sedative given in a drink
- need to cannulate for safety once sedated
How much midazolam do you give for oral sedation?
20mg midazolam
What should you be aware of when doing oral sedation? (5)
- high individual variation in response to drugs
- low doses needed in elderly and frail
- high doses needed in children and adolescents
- risk of resection
- risk of overdose
What is the definition for general anaesthesia?
A state of controlled consciousness
What are the properties of nitrous oxide? (5)
- not metabolised
- quick uptake
- tissue saturation to 90% of the inspired concentration in 5 mins
- rapid recovery
- 95% eliminated in 10 mins
What are the physiological effects of IHS? (4)
- oxygen saturation at normal or higher than normal level
- blood pressure may drop from baseline
- pulse rate may drop from baseline
- respiratory rate may drop from baseline
What are the advantages of inhalation sedation? (5)
- less equipment than for general anaesthesia
- no anaesthetist required
- more relaxed patient than with LA alone
- more work per visit
- patient safety
What are the disadvantages of inhalation sedation? (4)
- proper equipment with fail safe
- increased surgery time
- second appropriate person required
- scavenging required
What is the clinical status of a sedated patient? (5)
- maintains patent airway independently
- verbal contact with operator
- keeps mouth open independently
- able to keep eyes open
- able to swallow
What drugs are classified as depressants? (5)
- alcohol
- solvents
- heroin
- morphine
- benzodiazepines
What drugs are classified as hallucinogenics? (3)
- LSD
- magic mushrooms
- canabis
What are the main statues relating to drugs in the UK? (2)
- the medicines act 1968
- the misuse of drugs act 1971
Name 5 class A drugs
- heroin
- cocaine
- methamphetamine
- ecstasy
- methadone
Name 3 class C drugs
- benzodiazepines
- ketamine
- anabolic steroids
What are the possible effects of opiates? (4)
- initial euphoria
- removal of tension
- tranquility
- sense of control
What are the negative effects of opiates? (4)
- itching
- flushing
- slurred speech
- depression
What are the problems associated with injections? (4)
- blood borne viruses
- collapsed veins
- amputation
- abscesses
What is ffoulds classification of mental illnesses? (5)
- organic
- psychosis
- neuroses
- personality disorder
- eating disorder
What is the difference between neurosis and psychosis?
Neurosis is contact retained with reality whereas psychosis is contact lost with reality
What disorders are classified as neurosis? (4)
- anxiety
- phobic
- obsessional
- depressive
What disorders are classified as functional psychosis? (2)
- bipolar
- schizophrenia
What are the oral problems with eating disorders? (4)
- ANUG common
- poor aesthetics
- poor attendance
- poor perio conditions
What is methadone also called?
Methadone hydrochloride
Trade name is dolophine
What type of drug is methadone?
Synthetic opiate analgesic
How is methadone provided?
As a white powder mixed with a green syrup
How does methadone work? (4)
- action on the CNS
- absorbed from buccal mucosa and stomach
- continuous occupancy of Mu opiod receptors
- stabilises neurochemistry previously chaotic from highs and lows of heroin use
What are the effects of methadone on teeth? (3)
- high caries risk with 50% sugar
- often methadone held in mouth to increase absorption from buccal mucosa
- opiate analgesic therefore decreases salivary flow
What are the oral findings of patients that use amphetamines? (3)
- xerostomia therefore increased caries and perio disease
- bruxism grinding therefore TMJD
- attrition/erosion
What are the oral findings of ecstasy? (4)
- bruxism grinding therefore TMJD
- occlusal wear on posterior teeth
- xerostomia
- mucosal burns
What are the oral effects of cocaine? (4)
- gingival and tongue erosions
- ulceration of palate
- cluster headaches may mimic atypical facial pain
- bruxism and TMJD
What are the oral effects of cannabis? (4)
- decreased respiratory rate
- impaired memory
- soft tissue disease
- increased heart rate following adrenaline in LA
What dental advice can you give patients using methadone? (6)
- drink methadone with a straw
- try to take near a mealtime
- swallow it immediately don’t hold in mouth
- rinse with water afterwards
- chew sugar free chewing gum to increase saliva
- brush teeth before taking it