Psychiatry Flashcards
Why should antipsychotics not be prescribed in lewy body dementia
Precipitates severe parkinsonism in 60%
Features of lewy body dementia
Day today fluctuating levels of cognitive function
Visual hallucination
Sleep disturbance
Transient loss of consciousness
Recurrent falls
Parkinsonian features (Tremor, hypokinesia, rigidity, postural instability)
Features of vascular dementia
Begins in 60s Stepwise deterioration cognitive function Focal neurology Fits Nocturnal confusion
Risk factors for vascular dementia
Male Smoking Hypertension DM Hypercholesterolaemia
Features of frontotemporal dementia
Disinhibition inattention antisocial behaviour personality change apathy Akinesia withdrawal Memory loss disorientation occur late
Features of normal pressure hydrocephalus
Triad of dementia, gait disturbance and urinary incontinence
What is the most common type of dementia
Alzheimer’s disease
Features of Alzheimer’s disease
Gradual progressive cognitive decline Apathy Labile mood Altered personality Paranoia
When may early onset Alzheimer’s occur
Down’s syndrome
Inheritance of amyloid precursor or presenillin proteins
Qs in the mini mental state examination
> year, month, day, date, time > country, county, town, building, floor > Repeat - apple, penny, cup > Calculation - start at 100 and subtract 7 (100, 93,86 ,79, 72) Or spell world backwards - d l r o w > Recall 3 words > name - pencil and watch > repeat 'no ifs ands or buts' > 3 stage command > Read and obey a written command - close your eyes > write a sentence > Copy intersecting pentagons
What is pseudodementia
Features of dementia caused by depression
Mood impairment precedes the cognitive symptoms
Within what timeframe do symptoms have to occur following a traumatic event for it to be classed at PTSD
6months
What are the 3 main symptoms of PTSD
Re-experiencing (Flashbacks and nightmares)
Avoidance
Hyperarousal
Side effects of tri-cyclic antidepressants
Dry mouth Postural hypotension Blurred vision Constipation Urinary retention
Side effects of SSRIs
GI upset
Sweating
Erectile dysfunction
Anorgasmia
What foods interact with mono-amine oxidase inhibitors
Red wine
Cheese
(Tyramine)
What is the cheese reaction of MAO inhibitors
Ingestion of tyramine causes a hypertensive crisis.
Due to release of nor-adrenaline from storage vesicles
Potential risks of ECT
Amnesia
Memory loss
Induction of a cardiac arrhythmia
Musculoskeletal injury
What biochemical / haematological abnormalities are found in anorexia nervosa
Hypokalaemia
Low WCC
Hypercholesterolaemia
Hypochloraemic alkalosis
Organic causes of anxiety
Hypoglycaemia Hyperthyroidism Paroxysmal SVT Alcohol withdrawal Drug withdrawal Drug intoxication Phaeochromocytoma (rare)
Features of generalised anxiety disorder
Excessive worry present more days than its absent
For at least 6m
Occurs with a variety of events
Syx include tension, feeling of impending doom, restlessness, insomnia, fatigue, poor concentration, physical pains
Management of generalised anxiety disorder
Short term - beta blockers
CBT
Counselling / Relationship counselling
Symptoms of panic disorder
Intense anxiety / fear Palpitations Sweating Shaking SOB Hyperventilation Derealisation Fear of dying
Management of panic disorder
Antidepressants
Relaxation training
CBT
Counselling
What is an obsession
Stereotypical and purposeless words / phrases / thoughts that an individual cannot control or out out of their mind