Alasdair MacLullich Professor of Geriatric Medicine Consultant in Geriatric Medicine University of Edinburgh.

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Presentation transcript:

Alasdair MacLullich Professor of Geriatric Medicine Consultant in Geriatric Medicine University of Edinburgh

What is delirium? Severe, acute neuropsychiatric syndrome Cognitive impairments Reduced or increased level of consciousness Psychotic features are common Resolves in 80% Mainly affects older people in hospital

Delirium is common and serious >120 patients per 1000-bedded hospital 1 in 5 dead in a month  New institutionalisation Strong marker of dementia Accelerates existing dementia; linked with new onset dementia Distressing High healthcare and social costs Yet … Only 20-25% detected Generally poorly managed

Draft pathway

Detection

Detection of delirium “THINK DELIRIUM” NICE GUIDELINES, 2010

Core features Acute onset/fluctuating course Inattention Additional features Altered alertness (eg. drowsiness) Other cognitive deficits, eg. in memory Poor comprehension Psychotic features Sleep-wake cycle disturbance

Delirium: many formal and informal terms Creates problems: imprecision Delirium and dementia get mixed up ‘Delirium’ triggers specific actions ‘Cognitive impairment’, ‘confusion’ usually don’t best to use the term ‘delirium’

Draft pathway states: local tools Most sites don’t have delirium screening implemented The 4AT being used in some sites: What method should be used for detection?

Assessment

Looking for causes 1: acute, severe illness If delirium suspected, treat as a medical emergency (1 in 5 are dead in one month) Nursing / medical input early ABC Pulse / BP / RR / saturations / temp / BM / check drugs

Looking for causes 2: general assessment Standard history and examination, + FBC, U&E, Ca, LFTs, glucose CRP TFTS ECG/CXR ABGs Urinalysis/MSU CT head / MRI (if head injury or focal neurological signs or if persisting delirium after 5 days)

Looking for causes 3: drug review Opioids Benzodiazepines Antipsychotics Amitriptyline Anti-spasmodics, eg. oxybutinin, buscopan Anti-epileptics when not used for epilepsy, eg carbamazepine Anti-histamines eg cetirizine Anti-hypertensives (when causing hypotension)

Informant history Mental status change: Onset, duration, fluctuating?, character Helpful in detecting BPSD Also to detect previously undiagnosed dementia Drug/alcohol use Activities of daily living Personality, preferences, etc.

Management

Treat causes Infections Drugs Other acute illnesses Pain Drug effects Drug and/or alcohol withdrawal Etc.

Non-pharmacological look for acute cause (pain, thirst, hunger, urinary retention) repeated orientation reassurance avoidance of confrontation avoidance of physical contact (can be perceived as assault) Pharmacological haloperidol 0.5mg min intervals risperidone 0.25mg nocte consider lorazepam 1mg, but SECOND LINE (PD, DLB, BDZ/EtOH w/d) Treating agitation & distress

General care Provide calm environmental & personal orientation Hearing aids, glasses Oxygen, hydration, nutrition Treat pain Avoid constipation (treat if in doubt) Do not catheterise unless necessary Observe sleep pattern, correct if possible Involve relatives & carers

Ongoing care

Specialist referral In 5 days if delirium persisting, sooner if delirium is severe Liaison psychiatry or geriatric medicine Assessment of possible dementia Cognitive testing if delirium resolved IQCODE Follow-up by GP or specialist clinic

Resources (eg. clinical pathways, patient information sheets) at: __________________________________________________ 8 th Annual Meeting Leuven, Belgium, Sep 20-21, 2013