Everything You Need to Know About Geriatric Psychiatry in 75 Minutes
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Transcript of Everything You Need to Know About Geriatric Psychiatry in 75 Minutes
Everything You Need to Know About Geriatric
Psychiatry in 75 Minutes
Andrea Stewart, MD, FRCPCWriter of LMCC, 2002
Aged ≥80 years in 1994Aged ≥80 years in 2020
Pro
port
ion o
f popula
tion a
ged ≥
80
years
(%
)
AGE DEPENDENCY
RATIO
Co-morbid medical illness / cognitive disorders
Sensory loss
Financial worries
Retirement
Dependency
Dying and death
Bereavement
Challenges of Late Life
OVERVIEW
Dementia - BPSD
Late Onset Psychosis
Depression in late life
Anxiety in late life
Delirium
Other types of dementia (Lewy Body, FTD)
Case 2
Approach to Memory Loss
Speaking to the person (safety first)
Speaking to the family (safety first)
History, physical examination
Create a differential and then direct investigations (bloodwork, urinalysis, ECG, imaging) to firm up the diagnosis
Investigations
Follow-up Plan
Differential Diagnosis
Delirium
Cognitive Impairment but not dementia/ Mild Cognitive Impairment/ Age Associated Memory Decline
Dementia - subtypes
Depression or other psychiatric illness
Other CNS disease (cancer, demyelination, etc.) or a dementia secondary to GMC
Alzheimer’s DementiaMemory Impairment
One or more other cognitive impairment:
Aphasia, apraxia, agnosia, executive functioning deficit
Gradual onset and continual decline
Impairments cause significant social or occupational functional decline compared to previous level of functioning
Impairments are not delirium, substance-induced, or caused by another GMC or psychiatric illness
Defining the Diagnostic Threshold
MCI/ CIND
Normal Cognition
Dementia
Screening Tools
MMSE score <24/30
MOCA score <26/30
Mini-Cog (3 word registration & recall, CDT)
Work-up1
CBC, Cr, urea, electrolytes, TSH, vitamin B12
Neuroimaging if the onset is recent (<1 year), early (<65), or the presentation is atypical or suggestive of another neurological disease
Other tests prn (VDRL, HIV, carotid U/S, EEG, chest Xray, urinalysis, LP)
ECG prior to medication management1Burns A, BMJ
Act
ivit
ies
of
Daily
Liv
ing
MMSE 25 20 15 10 5 0
KEEP APPOINTMENTS
TELEPHONE
OBTAIN MEAL/SNACK
TRAVEL ALONE
USE HOME APPLIANCES
FIND BELONGINGS
SELECT CLOTHES
DRESS
GROOM
MAINTAIN HOBBY
DISPOSE LITTER
CLEAR TABLE
WALK
EAT
30
Adapted from Galasko. Eur J Neurol. 1998;5(suppl 4):S9-S17; Galasko et al. Alzheimer Dis Assoc Disord. 1997;11(suppl 2):S33-S39.
Mild AD Moderate AD Severe AD
Bars show 25th to 75th %ile Bars show 25th to 75th %ile of patients losing of patients losing
independent performance.independent performance.
May improve:
ADLs- activities of daily living, time to institutionalization
Behaviour/Mood- decreased concomitant psychotropics
Cognitive enhancement
Types
Acetylcholine-esterase inhibitors (boost ACh)
NMDA antagonists (Block glutamate)
Cognitive Enhancers
Other Medications/ CAMNimodipine (Ca channel blocker) at 90 to 180 mg/day
General BP lowering
Vitamin B12
Extract of Ginkgo biloba 761
Vitamin E no longer used due to bleeding risk
DHEA may be harmful to memory
Cognitive training, reminiscence therapy
Case 2
Behavioural and Psychological Symptoms
of Dementia
ABC Approach
AAntecedents
BBehaviours
CConsequences
www.piecescanada.com
Physical: delirium, diseases, drugs, discomfort, disability
Intellectual: dementia – cognitive abilities/losses
Emotional: depression, psychosis
Capabilities: environment not too demanding yet stimulating enough, balancing demands and capabilities
Environment: noise, relocation, schedules…
Social, cultural, spiritual: life story, relationships family dynamics, personality traits...
Atypical antipsychotics1
RSP & OZP reduce aggression, RSP reduces psychosis
Higher risk CVEs, EPS, death
Antidepressants2,3
db trials show CIT = RSP with fewer SEs
Trazodone has trend of effectiveness in FTD
Benzodiazepines
Pharmacological Management of BPSD
1Cochrane, 2008; 2Pollock, BG Am J Ger Psych; 3Cochrane, 2008
a) Insidious, gradual and progressive decline
b)Motor symptoms are absent until later in the disease
c) A dramatic presentation is not the same as an abrupt onset
d)Behavioural symptoms are often the most distressing symptom for families and caregivers
e)The ‘head turning sign’ refers to sexual disinhibition
f) Vascular events may co-occur and cause cognitive dysfunction
The following is NOT true of Alzheimer’s:
Case 6
Psychosis in the Elderly1
4% in the community
15% presenting to a geriatric medicine clinic
10-38% of people in LTC (21% of new admissions to LTC)
1Holyrood S, Int J Ger Psych 1999
Approach
Speaking to the family (safety first)
Speaking to the person (safety first)
History, physical examination
Create a differential and then direct investigations (bloodwork, urinalysis, ECG, imaging) to firm up the diagnosis
Investigations
Follow-up Plan
Differential DiagnosisPsychosis in People <45
MDE or Mania
SZP/SZA/ delusional D/O
2 GMC/subs
Delirium
Personality disorder
Psychosis in People >45
Cognitive Disorders (delirium, dementia)
2 GMC/ Subs
Psychotic Disorder (SZP, SZA, Del D/O) or paraphrenia
MDE, Mania
Differentiating the Dx
Dementia MDE Delirium Mania LO SZP
Memory loss,
impaired function, insidious onset & progress
Prominent mood
and anxiety sx, past hx MDD, somatic/
guilt/ nihilistic delusions
Acute, fluctuates, clouded sensorium sleep
reversal, delusions from env., vulnerabl
ehost
Mixed states more
common, less
grandiosity
confusion &
irritability
Delusions may be bizarre, no dis-
orientationbaseline paranoid
or schizoid PD traits
Outcomes and Associated Factors
Elderly with psychosis are more likely to have a history of psychosis, live in LTC, and have lower MMSE scores1
1Holyrood S, Int J Ger Psych 1999
Case 6
a)Most paranoid disorders of old age are due to schizophrenia
b)More women develop late onset schizophrenia
c) With ageing, schizophrenia tends to give less severe positive symptoms
d)Patients with schizophrenia live 10-30 years less on average
Which of the following is not true in LLP?
Case 7
Approach to Mood Complaint
History (with collateral) and physical examination
Make the diagnosis considering the differential, assess severity (psychosis) and suicidality
Thorough medication review
Investigate causes (bloodwork, urinalysis, ECG, imaging) and remove promoting factors
Review past episodes and treatments
Differential Diagnosis
Depressive Disorder (dysthymia, MDE, BP with MDE, personality disorder)
Bereavement
Dementia
Delirium
Substance (drug of abuse, medication) or GMC
Epidemiology1
Lifetime risk 11%
Incidence in the general population: 4%/ year
Incidence in people > 65: 1-3%/ year
Incidence in hospitalized people: 11%
Incidence in people in LTC: 12-22%
1Narrow WE, NIMH ECA prospective data
Predisposers Precipitators Perpetuators
Female gender, widowed or
divorced, PHx MDD, CeVD, Personality type, major physical or disabling
illness, some meds, alcohol abuse, social disadvantage,
Caregiver stress
Recent bereavement, moving to an institution, adverse life
events (separation,
loss, financial crisis),
declining health,
relationship problems
Persistent sleep
problems, chronic stress,
social isolation, stigma, adverse
effects of medication therapies
Diagnostic Criteria
Sleep change
Interests lost
Guilty or worthless feelings
Energy lost
Mood depressed/irritable or anhedonia for > 2 weeks and 4/8:
Concentration impaired
Appetite changed/ wt change
Psychomotor symptoms
Suicidal or death-related thinking
DSM-IV-TR
Late Life DepressionLess More
Complaints of sadness
Somatic symptoms,
Anxiety, Cognitive
symptoms, Medical
comorbidity
CCSMH, Assessment and Treatment of Depression 2006
Subtypes
With or without psychosis, graded severity, recurrent or first episode, bipolar depression
Secondary to something else
Dysthymia
Co-morbid with dementia or substance abuse
MDE vs GriefMDE
+/- onset after trigger
Symptoms worsen with time
SI/ preoccupation with death
Intense guilt & worthlessness
Persistent mood state
Functional impairment
Psychosis
Grief
Onset after death of loved one
Symptoms improve with time
Passive wishes to have died 1st or with person
Self esteem preserved
Sadness comes in waves
Functional impairment <2 mo.
APA, 2000
Management
Mild: bibliotherapy, exercise, close follow-up or supportive therapy
Moderate: antidepressants +/- psychotherapy, or psychotherapy alone
Severe: refer to psychiatry, +/- hospitalization for safety, ECT, antipsychotics with antidepressants, psychotherapy alone only effective for specific patients if done by experts - otherwise in combination
Suicide Risk
Fixed RFs Modifiable RFsV. High Risk Behaviours
Old ageMale genderWidowed or
divorcedPrevious attemptLosses (health,
status, role, independence,
relations)
Social isolation, Presence of chronic pain (OR moderate
pain 1.9, severe pain 7.5)
Presence and severity of MDEHopelessness,
Suicidal ideationAccess to means,
especially firearms
AgitationGiving away possessions
Reviewing one’s willIncrease use alcohol
Non-compliance with treatment
Taking unnecessary risks
Preoccupation with death
CCSMH, Assessment of Suicide Risk and Prevention of Suicide, 2006
Language of Treatment
AntidepressantsMeta-analysis of trials of 2nd generation antidepressants in people >60 with non-psychotic depression and no dementia
1American Journal of Geriatric Psychiatry, 2008
Medication Placebo
Response 44% 35%
Remission 33% 27%
Discontinuation 24% 20%
Antidepressant
Works
Maintenance Go to 8 wks
Reassess diagnosis, increase dose, switch to escitalopram, sertraline, mirtazapine,
effexor
>20% betterNo change after 4wks
>20% better after above: Li, antipsychotic, psychotherapy
Clinical Use of Antidepressants
If anything protective for suicide in elderly
Elderly more likely to die of overdose if taken
Electrolytes pre and post (1 week to 1 month)
Risk of GI bleed, especially with concurrent NSAID or ASA use - monitor, add gastroprotective agent
Follow q2 weeks for the first 1-3 months, keep on medication >1 yr post remission
Psychotherapy
Cognitive Behavioural Therapy
Problem Solving Therapy
Interpersonal Therapy
a) it is a treatable condition that with antidepressants has a remision rate of 30-40% and response rates of 67-90%
b) the neurotransmitters serotonin and noradrenaline are involved
c) Psychotherapy is effective in severe depression
d) an association between early life trauma, hippocampal atrophy and depression can be seen
e) it often presents with multi-system physical complaints
f) it is associated with coronary artery disease, stroke, diabetes, cancer, Parkinson’s, and MS.
g) ECT should be considered only when all other treatments have failed
The following is true regarding depression:
a) it is a treatable condition that with antidepressants has a remission rate of 70-80% and response rates of 67-95%
b) the neurotransmitters serotonin and noradrenaline are involved
c) Psychotherapy is effective in severe depression
d) an association between early life trauma, hippocampal atrophy and depression can be seen
e) it often presents with multi-system physical complaints
f) it is associated with coronary artery disease, stroke, diabetes, cancer, Parkinson’s, and MS.
g) ECT should be considered only when all other treatments have failed
The following is true regarding depression:
a) Is more prevalent in women than men
b)Prevalence rates rise sharply with age
c) Is accompanied by a much lower suicide risk than in younger adults
d) Is unresponsive to treatment in half of cases.
e) Is often precipitated by a loss
f) Both b) and d)
Which of the following are true of depression in old
age:
a) Is more prevalent in women than men
b)Prevalence rates rise sharply with age
c) Is accompanied by a much lower suicide risk than in younger adults
d) Is unresponsive to treatment in half of cases.
e) Is often precipitated by a loss
f) Both b) and d)
Which of the following are true of depression in old
age:
a) Is more frequent in elderly.
b) Remits with antidepressants in 50% of cases
c) Remits with antidepressants + antipsychotics in 75% of cases
d) Responds and remits best with ECT
e) Should prompt thorough search for symptoms of bipolar illness in pt and family members.
f) All of the above except b)
g) All of the above except b) and c)
Which of the below options are true for psychotic
depression:
a) Is more frequent in elderly.
b) Remits with antidepressants in 20% of cases
c) Remits with antidepressants + antipsychotics in 45% of cases
d) Responds and remits best with ECT
e) Should prompt thorough search for symptoms of bipolar illness in pt and family members.
f) All of the above except b)
g) All of the above except b) and c)
Which of the below options are true for psychotic
depression:
a)“Nerves”
b)Excessive fatigue
c) Hypersomnia (sleeping too much)
d)Digestive problems
e)Fear of Alzheimer’s disease
f) All of the above except C
Which of the following are frequent “reasons for consultation” by elderly who have an episode of depression:
a)“Nerves”
b)Excessive fatigue
c) Hypersomnia (sleeping too much)
d)Digestive problems
e)Fear of Alzheimer’s disease
f) All of the above except C
Which of the following are frequent “reasons for consultation” by elderly who have an episode of depression:
a)Active suicidal ideation
b)Prominent psychotic symptoms
c) Crying spells when she thinks of her deceased husband.
d)Being less active socially
e)Being unable to attend to her usual daily activities 3 months after the death of her husband
Which of the following would go against a diagnosis of normal grief:
a)Active suicidal ideation
b)Prominent psychotic symptoms
c) Crying spells when she thinks of her deceased husband.
d)Being less active socially
e)Being unable to attend to her usual daily activities 3 months after the death of her husband
Which of the following would go against a diagnosis of normal grief:
Case #3
81 year old widow, lives alone in her home, presents with 2 year history of insidious increase in worrying, indecisiveness, isolation, insomnia, and feeling tense. Her husband recently died in a NH after having dementia for 8 years. Her kids say she is increasingly dependent on them for running errands, and she has stopped doing her own taxes and driving.
She appears nervous, with a smile that doesn’t match her words.
Mood Disorder AnxietyDisorder
APA 1994; Keller MB 1995; Clayton PJ et al 1991; Coplan JD, Gorman JM 1990
■ Depressed /
irritable mood
■ Anhedonia
■ Euphoria
■ Weight
gain/loss
■ Loss of
interest
■ Fear■ Apprehension■ Panic attacks■ Chronic pain■ GI complaints
■ Excessive worry■ Agitation■ Difficulty
concentrating■ Sleep
disturbances
■ Hypervigilance
■ Agoraphobia
■ Compulsive rituals
As many as 90% of depressed patients suffer from anxiety symptoms1-3
More severe illness at baseline
More psychosocial impairment
Greater likelihood of chronic illness
Poorer, slower response to treatment
Greater likelihood of committing suicide
1. Richou H. et al. Human Psychopharmacol 1995; 10:263-712. Coplan JD et al. J Clin Psych 190; 51(Suppl 10):9-13
3. Kasper S. et al. Primary Care Psych 1997; 3:7-16
Secondary anxiety disorders more common in elderly
Primary anxiety disorders generally do not have an onset in the elderly (same for personality disorders)
High co-morbidity with depression
Overall less common in the elderly.
Phobias and GAD are the most common. Panic disorder is relatively rare, less than the 1-3% described in younger populations (Flint AJP 1994).
Caution with anxiolytics
can cause paradoxical disinhibition
Diphenylhydramine (Benadryl), Dimenhydrinate (Gravol), Chlorpromazine, Amitriptyline, chloral hydrate and barbiturates are not good anxiolytics due to their side effects
Elderly are more sensitive to benzodiazepines. Associated with an increased risk for falls and MVAs
Anxiety Disorders in the Elderly
Cognition Amnesia (esp. alcoholics with benzos)
Memory and visuospatial impairment
Psychomotor Accentuate postural sway and incoordination
Increase risk for MVAs and falls
Paradoxical dysinhibition
Respiratory Depression avoid benzos in sleep apnea
Sleep Decreased sleep latency but also decreased stage 3 and 4 sleep with
Benzos
Anxiolytic Side Effects
Which of the following is NOT true of anxiety Which of the following is NOT true of anxiety disorders in old agedisorders in old age
a) It is more often secondary to another axis 1 condition like depression or medical condition
b) Anxiolytics can worsen not only anxiety but can cause sleep disruption, falls, and MVAs.
c) Benzodiazepines are safe in the elderly
d) Benadryl, Gravol, Chlorpromazine, Amitriptyline and other anticholinergic medications can be dangerous in the elderly because of delirium and associated other receptor effects (orthostatic hypotension)
e) Primary anxiety disorders and personality disorders, including dependent personality disorder, do not begin in old age
a) Prevalence rates increase with ageing.
b) Phobias are the most common anxiety disorder
c) Overall prevalence rates for all anxiety disorders in old age is around 10%
d) Panic disorder affects approx. 5% of elderly.
MCQ#9
a) Prevalence rates increase with ageing.
b) Phobias are the most common anxiety disorder
c) Overall prevalence rates for all anxiety disorders in old age is around 10%
d) Panic disorder affects approx. 5% of elderly.
MCQ#9
Case 8
Differential Diagnosis
Generalized Anxiety Disorder
Dysthymia
MDE
Anxiety secondary to GMC, substance
Bereavement
Anxiety in Late Life
Less common, 5-10% in the community
F>M, peak onset adolescence
Agoraphobia alone as having a second peak
Late life onset usually heralds another condition:
MDD, dementia, medication toxicity, withdrawal, GMC (cardio and cerebrovascular disease)
Presentations of Anxiety Disorders in
Late Life1
Autonomic hyper-arousal pronounced:
palpitations, dry mouth, dizziness, hot flashes, GI distress
Low prevalence of panic disorder and OCD
Onset after therapy with DA agonists, steroids, sympathomimetics, Beta-adrenergic agonists (salbutamol), theophylline, digoxin, thyroxine
Flint AJ, Comprehensive Textbook of Geriatric Psychiatry: Anxiety Disorders, 2004
Agoraphobia
Most prevalent anxiety disorder in the community1
Onset not uncommon after 601
Late onset related to abrupt onset physical illness or trauma (fall, being mugged)2
Associated with early parental loss3
1,3Lindesay J, Br J Psych, 1991; 2Burvill PW, Br J Psych, 1995
APA 1994; Keller MB, 1995; Clayton PJ, 1991; Coplan JD,1990
■ Depressed /
irritable mood
■ Anhedonia
■ Euphoria
■ Weight
gain/loss
■ Loss of
interest
■ Fear■ Apprehension■ Panic attacks■ Chronic pain■ GI complaints
■ Excessive worry■ Agitation■ Difficulty
concentrating■ Sleep
disturbances
■ Hypervigilance
■ Agoraphobia
■ Compulsive rituals
Depressive Disorder
Anxiety Disorder
Management
Diagnose, initiate treatment or refer
Investigate +/- treat co-morbid illness
Psychotherapy: CBT
Pharmacotherapy: SSRI (sertraline)
More severe illness at baseline
More psychosocial impairment
Poorer, slower response to treatment
Greater likelihood of committing suicide
Greater likelihood of morbidity (cardiovascular, respiratory, GI diseases) and mortality (cardiovascular, COPD, neoplastic causes)
Outcome
Flint AJ, Comprehensive Textbook of Geriatric Psychiatry: Anxiety Disorders, 2004
a) It is more often secondary to another axis 1 condition like depression or medical condition
b) Anxiolytics can worsen not only anxiety but can cause sleep disruption, falls, and MVAs.
c) Benzodiazepines are safe in the elderly
d) Benadryl, Gravol, Chlorpromazine, Amitriptyline and other anticholinergic medications can be dangerous in the elderly because of delirium and associated other receptor effects (orthostatic hypotension)
e) Primary anxiety disorders and personality disorders, including dependent personality disorder, do not begin in old age
Which of the following is NOT true of anxiety disorders in old
age:
a) It is more often secondary to another axis 1 condition like depression or medical condition
b) Anxiolytics can worsen not only anxiety but can cause sleep disruption, falls, and MVAs.
c) Benzodiazepines are safe in the elderly
d) Benadryl, Gravol, Chlorpromazine, Amitriptyline and other anticholinergic medications can be dangerous in the elderly because of delirium and associated other receptor effects (orthostatic hypotension)
e) Primary anxiety disorders and personality disorders, including dependent personality disorder, do not begin in old age
Which of the following is NOT true of anxiety disorders in old
age:
a)Prevalence rates increase with age
b)Phobias are the most common anxiety disorder
c) Overall prevalence rates for all anxiety disorders in old age is around 20%
d)Panic disorder affects around 5% of elderly.
Which of the following is true regarding anxiety disorders in old
age:
a)Prevalence rates increase with age
b)Phobias are the most common anxiety disorder
c) Overall prevalence rates for all anxiety disorders in old age is around 20%
d)Panic disorder affects around 5% of elderly.
Which of the following is true regarding anxiety disorders in old
age:
Case 1
Approach
History (with collateral) and physical examination
Make the diagnosis considering the differential
Thorough medication review
Investigate causes (bloodwork, urinalysis, ECG, imaging) and remove promoting factors
Consult prn (OT, PT, RD, SW, other MD)
Differential Diagnosis
Delirium
Dementia
Depression, Mania, Psychotic disorder
Other CNS disease (cancer, demyelination, etc.)
Delirium20% of hospitalized patients >651
10-30% of people >65 it is the presenting symptom of a life-threatening illness1
LOS approximately doubled to 8 days2
Mortality doubled, morbidity increased3
Unrecognized in ~ 70%4
1Centers for Medicare and Medicaid Services, 2004 CMS Statistics; 2Agostini JV, Principles of Geriatric Medicine and Gerontology; 3McCusker J, Arch Intern Med; 4Gillis AJ, Can Nurse
Delirium
C - Consciousness fluctuates
C - Course has an acute onset
C - Cognition disturbed
C - Cause is a GMC
Subtypes of Delirium
Meagher (1996), BJP
Predisposers Precipitators Perpetuators
Old ageVisual loss
Hearing lossHx deliriumDementiaFunctional
dependenceMedical
morbiditiesPolypharmacyEtOH/ drugs
Med change Trauma (IV, restraints, foley, fall)
UTI, pneumonia
MI, CVALow BP or O2
AbN lytesGI or GU disease
Periop. factors
Poor nutritionEnvironmental
changesPain
IV/FoleyDehydration
Sensory deprivation/
overstimulation
Poor sleepHypothermia
Causes of DeliriumCauses of Delirium
I - Infections
W - Withdrawal
A - Acute metabolic Encephalopathy
T - Trauma
C - CNS pathology
H - Hypoxia
D - Deficiencies
E - Endocrine Disorders
A - Acute Vascular Insufficiency
T - Toxins and drugs
H - Heavy metals
Case 1
QuickTime™ and aGIF decompressor
are needed to see this picture.
Treatment of Delirium1,2,3
Psychological/ Social/ Environmental
Ensure pt wears glasses, hearing aid, dentures, encourage independence & regular activity, allow adequate sleep
Support family, enlist their help in decreasing distress and providing frequent reorientation
Place person near NS station in single room with adequate lighting, reorientation cues, and LIMIT RESTRAINTS
Biological
Treatment related to cause of delirium
Manage sx (low dose neuroleptics)
Ensure adequate hydration, stop unneeded lines
1Cole MG, J Geriatr Psychiatr Neurol; 2Simon I, Geriatr Nurs; 3Meagher DJ, Br J Psychiatry
Antipsychotics in Delirium1
Evidence suggests modest benefits in decreasing duration and severity of delirium with use of antipsychotic
Low dose haldol (0.25-1.5 mg/24h) is equivalent to low dose risperidone (0.25 -1/24h) or olanzapine (1.25-5 mg/24h) in efficacy, but may cause more akathisia, definitely costs less
Cochrane Collaboration, 2009
Delirium Outcomes
Delirium in the elderly patient is associated with increased mortality, longer hospital stays, and increased risk of institutional placement
It is a reversible syndrome, that improves or resolves with treatment of the precipitating illness and addressing precipitating and perpetuating factors
a) It is characterized by problems and fluctuations with attention and consciousness
b) In the elderly, it is most often completely reversible
c) Hypoactive subtypes are more often missed
d) Environmental interventions do not help
e) It is a significant independent risk factor for death
f) It can be superimposed on dementia or depression
g) It is rare in the elderly
h) It is better to use benzodiazepines than neuroleptics for psychotic and behavioural symptoms
MCQ: The following is true for delirium:
a) It is characterized by problems and fluctuations with attention and consciousness
b) In the elderly, it is most often completely reversible
c) Hypoactive subtypes are more often missed
d) Environmental interventions do not help
e) It is a significant independent risk factor for death
f) It can be superimposed on dementia or depression
g) It is rare in the elderly
h) It is better to use benzodiazepines than neuroleptics for psychotic and behavioural symptoms
The following is true for delirium: