Skip to main content

Delirium Clinical Care Standard

The goal of the Delirium Clinical Care Standard is to improve the prevention of delirium in patients at risk and the early diagnosis and treatment of patients with delirium, so that the incidence, severity and duration of delirium are reduced.

What is delirium?

Delirium is an acute change in mental status that is often triggered by acute illness, surgery, injuries or adverse effects of medicines. It is a serious condition that is associated with increased mortality, but has often been poorly recognised in hospitals in Australia and internationally.
 

About the Standard 

The Delirium Clinical Care Standard was last updated in 2021. 

The Standard includes:

  • eight quality statements describing safe and appropriate care
  • a set of indicators to support monitoring and quality improvement

We also have resources for clinicians, healthcare services and consumers to support the implementation of the Standard. 

-

Delirium Clinical Care Standard

PDF

1.4 MB

Quality Statements

Quality statement 1 – Early identification of risk

A patient with any key risk factor for delirium is identified on presentation and a validated tool is used to screen for cognitive impairment, or obtain a current score if they have known cognitive impairment. Before any planned admission, the risk of delirium is assessed and discussed with the patient, to enable an informed decision about the benefits and risks.

Conduct a delirium risk assessment in the pre-admission clinic or within 24 hours of presentation to hospital for admitted patients. Identify key risk factors that include any of the following:

  • age ≥65 years (≥45 years for Aboriginal and Torres Strait Islander people)
  • known cognitive impairment or diagnosed dementia
  • a previous diagnosis of delirium
  • a severe medical illness (a clinical condition that is deteriorating or is at risk of deterioration)
  • current hip fracture.

Patients with any of these risk factors should receive a validated screening test for cognitive impairment, which is recognised as a significant risk factor for developing delirium. Conducting cognitive screening on presentation to hospital helps identify patients who should be assessed for delirium and enables monitoring for delirium onset during a hospital stay by providing a baseline measure. This also applies to patients with known cognitive impairment. Offer screening for cognitive impairment using a validated tool that is culturally appropriate. (See ‘Related resources’ tab.)

Assess the risk of delirium before a planned admission, particularly for surgical and procedural interventions. Patients and carers should be advised of their risk and potential consequences of developing delirium, to inform decision-making and consent and to help with management if delirium does develop.

When screening identifies probable cognitive impairment, clinical assessment for delirium is necessary (see Quality statement 4). Note that a positive score on a screening tool is not a diagnosis, but a prompt for further assessment, early intervention and early family involvement.

Ensure systems, policies and procedures are in place to identify risk of delirium within 24 hours of presentation, and to support routine screening of cognitive function for patients at risk of delirium who present to a health service and are admitted for care. A structured approach can improve detection rates. Identify and use a local delirium screening and assessment pathway. This includes ensuring the availability of locally agreed, validated delirium screening and cognitive screening tools that are appropriate to the cultural backgrounds of relevant communities and protocols for when they will be used. Ensure that the staff who use these tools are trained and competent in their use, and that workforce proficiency is maintained.

Ensure policies and procedures are in place to inform at-risk patients and their family or carer about the risk of delirium and to encourage participation in care.

Ensure pre-admission protocols and consent processes incorporate an assessment of the risk of delirium and discussion with the patient before surgery or another procedure, as part of their informed consent. The Commission’s Informed Consent in Health Care – Fact sheet for clinicians can direct clinicians in obtaining valid informed consent

When you come to hospital or are planning admission for a procedure or other treatment, your clinician will check if you have any of the risk factors for delirium. If so, you will be offered a short screening tool to see if you have problems with:

  • your memory
  • putting your thoughts together
  • communicating with others.

In the screening tool, a clinician will ask you a series of questions. If you have any difficulties with these questions, you may be at risk of delirium. You and your carer or family will also be asked about any recent changes in your behaviour.

If you are planning surgery or a procedure and you are at risk of delirium, you will be advised about the risk and what this means for you. This can help you to make a decision about having the surgery or a procedure, especially if it is not essential.

The 4AT has been validated both for screening for cognitive impairment and delirium assessment:

A range of other validated tools for screening for cognitive impairment are available – for example:

See also:

Quality statement 2 – Interventions to prevent delirium

A patient at risk of delirium is offered a set of interventions to prevent delirium and is regularly monitored for changes in behaviour, cognition and physical condition. Appropriate interventions are determined before a planned admission or on admission to hospital, in discussion with the patient and their family or carer.

Develop a delirium prevention plan, in partnership with the patient and family or carer, as part of a comprehensive care plan for those at risk of developing delirium.

Offer at-risk patients appropriate multicomponent interventions to prevent delirium, while considering clinical risk factors and the setting. Discuss the interventions being put in place and encourage family or carers to be involved (for example, to orient and reassure the patient). Ask the family or carer to alert the healthcare team to any changes in the patient’s mental or physical condition. Educate patients and family or carers about delirium before it occurs, to reduce distress if it does occur.

Monitor patients regularly, at least daily for changes in cognition and behaviour, and for clinical deterioration. Risk of delirium is increased post-operatively. Conduct medication reconciliation before patients are transferred between locations, or phases of care (such as before moving between wards or transferring to another facility).

Interventions for preventing delirium are listed below. These also apply to patients with delirium:

  • Communicate clearly. Identify yourself and explain to the patient what is happening. You may need to repeat yourself.
  • Use eye contact when culturally appropriate – for example, this may be viewed as disrespectful or aggressive in Aboriginal and Torres Strait Islander culture.
  • Review medicines to identify any that may increase the risk of delirium and to discontinue them if appropriate.
  • Reconcile medicines before any transfers of care.
  • Perform mobilisation activities at least once or twice daily, and mobilise a patient early after a procedure.
  • Sit out of bed for meals.
  • Help patients who usually wear hearing or visual aids, and ensure that they are in good working order.
  • Maintain optimal hydration and nutrition, and encourage or help the patient as necessary (confirm dentures are in place).
  • Regulate bladder and bowel function.
  • Regularly reorientate and reassure the patient.
  • Avoid moving the person within and between wards.
  • Use activities that help increase cognition – for example, reminiscence.
  • Use non-pharmacotherapy measures to help promote sleep (such as relaxation techniques, and using earplugs in the intensive care unit [ICU]).
  • Maintain a quiet environment.
  • Make a clock and calendar available to the patient. This may be a clock on the wall or a familiar one from home.
  • Provide lighting that is appropriate to the time of day.
  • Use effective pain management. Assess pain regularly and provide pain relief strategies.
  • Provide oxygen therapy where appropriate.

Ensure that policies, procedures and protocols are in place to enable clinicians to provide patients at risk of delirium with a set of preventive strategies and to conduct regular monitoring. Ensure processes are in place for clinicians to partner with patients and their family or carers when determining and implementing interventions. Ensure that staff are trained and competent in providing care to prevent and manage delirium. Identify and implement a format for prevention plans for high-risk patients.

Ensure that systems are in place for medication reconciliation to occur whenever patients are transferred between locations of care, especially when transferring out of ICU or before discharge. This is to reduce the inappropriate continuation of short-term medicines.

Ensure that policies and procedures support environmental care strategies, such as reducing noise and avoiding ward moves wherever possible for patients at risk of delirium or with delirium.

Ensure that equipment and devices, such as call bells, signs, calendars and clocks, are available to help orientate patients to decrease the risk of, or effectively manage, delirium.

If you are at risk of developing delirium, your clinicians will offer care to prevent it from happening. They may do things such as checking and changing your medicines, giving you more fluids or helping you stay as mobile as possible. Your family or carers will be encouraged to be involved in your care and will be given information about delirium and how to prevent it. You will also receive regular checks on your physical condition, thinking and memory (cognition).

Cognition is the ability to put your thoughts together and communicate them.

Some tools for assessing delirium may not be appropriate for repeat measurement and monitoring. Tools suitable for monitoring for incident delirium include:

  • Confusion Assessment Method ICU (CAM-ICU)
  • Delirium Observation Screening (DOS) scale (13-item)
  • Recognising Acute Delirium as Part of Your Routine (RADAR)
  • Modified Richmond Agitation-Sedation Scale (mRASS)
  • Single Question in Delirium (SQiD)
  • Nursing Delirium Screening Scale (Nu-DESC).

Other resources include:

Quality statement 3 – Patient-centred information and support

A patient at risk of delirium and their family or carer are encouraged to be active participants in care. If a patient is at significant risk or has, delirium, they and their family or carer are provided with information about delirium and its prevention in a way that they can understand. When delirium occurs, they receive support to cope with the experience and its effects.

that interventions for preventing delirium, such as modifying the environment, are in place and understood by the patient and their family or carer. Explain how they can help with prevention and management if they are able to do so.

Recognise when to engage an interpreting service to ensure the patient, families and carers understand the information you are sharing with them. Family or friends may not be appropriate interpreters because of health privacy issues.

If a patient develops delirium, proactively assess their distress and inform them and their family or carer about the plans to treat and reduce the severity of symptoms and any distress experienced with delirium. Support patients to make their own decisions and to choose a support person to be involved in decisions. Ask patients specifically about fears or concerns, and about hallucinations. Reassure patients and help them feel safe.47 It can be reassuring to patients and their family or carer to know the clinicians are informed about delirium and will take steps to help them avoid it, or to recognise and treat it early if it occurs.

Recognise that delirium is often a frightening, distressing and isolating experience that requires a gentle and friendly approach for the patient and family or carer.

Ensure that systems are in place to support clinicians in providing person-centred care for those with, or at risk of, delirium. Consider flexible visiting arrangements to support family or carer involvement in delirium prevention and management.

Identify appropriate interpreting services and educate the workforce on how to use interpreters appropriately.

Ensure that systems are in place to recognise when a patient has cognitive impairment and to work with the person, families and carers in a safe, calm and respectful environment. 

Ensure that processes are in place for patients, carers or families to directly escalate care. Examples of good practice include the following:

  • Ryan’s Rule is a three-step process in place in Queensland public hospitals to support patients, their families and carers, to raise concerns if a patient’s health condition is getting worse or not improving as well as expected.
  • Call and Respond Early (CARE) (WA and ACT) is another example of allowing patients or their families and carers to call for rapid assistance when they feel that the healthcare team has not fully recognised the patient’s changing health condition.
  • REACH (Recognise, Engage, Act, Call, Help is on its way) (NSW) is a patient and family escalation system developed by the NSW Clinical Excellence Commission for New South Wales hospitals.

If you are at risk of delirium, you and your family or carer will be given information and advice about delirium and how it can be prevented. You should be given this information in a way that you can understand it, whether it is written information or someone talking to you. Being prepared and acting early can help to reduce the effects of delirium. You and your family or carer will be encouraged to alert your healthcare team of any changes in your behaviour, thinking or physical condition. The health service organisation will have systems in place to take action if your health worsens. It is important that you and your family or carer know what to expect, what you can do if this happens and how to ask for help.

Your family or carer can provide valuable information to the clinicians caring for you and should be involved in your care if you wish them to be. An interpreter can be used for these conversations if required. If you develop delirium, the plan for your care will be discussed with you and your family or carer, and informed consent will be sought for any treatment you receive. The aim of your care will be to reduce your symptoms and any distress experienced with delirium.

People with delirium may:

  • appear confused and forgetful
  • be unable to pay attention
  • be different from their normal selves
  • be very agitated, quiet and withdrawn, sleepy, or a combination of these
  • have rapid and unpredictable mood changes
  • be unsure of the time of day or where they are
  • have changes to their sleeping habits, such as staying awake at night and being drowsy during the daytime
  • feel fearful, distressed, upset, irritable, angry or sad
  • have hallucinations and see frightening things that are not there but seem very real to them
  • lose control of their bladder or bowels
  • have delusions or become paranoid, and strongly believe things that are not true – for example, they may believe that someone is trying to physically harm them or has poisoned their food.

These symptoms fluctuate during the day, and may worsen in the evening or night.

Family members or carers can support you because they are familiar to you. They can:

  • reassure you
  • remind you about eating and drinking
  • bring in familiar objects
  • help the healthcare team to get to know you and understand what you are normally like.

Examples of patient information about delirium can be found at:

Quality statement 4 – Assessing and diagnosing delirium

A patient with cognitive impairment on presentation to hospital, or who has an acute change in behaviour or cognitive function during a hospital stay, is promptly assessed using a validated tool by a clinician trained to assess delirium. The patient and their family or carer are asked about any recent changes in the patient’s behaviour or thinking.

A diagnosis of delirium is determined and documented by a clinician working within their scope of practice.

Using a validated tool, assess for delirium in:

  • patients with cognitive impairment on presentation to hospital
  • patients who have a sudden decline in cognitive function or change in behaviour during their hospital admission.

Seek information about the patient’s usual mental status from the patient or their family or carer, general practitioner, or other primary care provider or similar. Ask about behavioural changes, such as:

  • confusion or worsened concentration
  • agitation or restlessness
  • sleepiness, including altered levels of consciousness
  • whether the patient has been less communicative or less responsive than usual
  • whether the patient has had difficulty cooperating with reasonable requests or has had other alterations in mood.

Family members or carers are often the best source of information about acute changes in a patient’s mental status or behaviour. As delirium symptoms can vary throughout the day, more than one assessment may be required to diagnose delirium.

Identifying hypoactive, hyperactive or mixed cases of delirium is necessary to implement appropriate treatment strategies. Hypoactive delirium is more common in older people, but is often missed and has a worse prognosis than other subtypes of delirium, including worse long-term cognition when delirium has a longer duration. Delirium is less likely to be recognised in patients with frailty or dementia.

Where delirium is detected, the diagnosis is determined and documented by a clinician working within their scope of practice. Document the diagnosis to aid in transfers of care, including in handover notes, referral and discharge letters. A history of delirium increases the risk of recurrence, and documenting an episode of delirium allows for preventive measures and monitoring for new delirium in subsequent healthcare encounters.

Discuss the diagnosis with the patient and their family or carer.

Current international clinical guidelines include validated delirium diagnostic tools, some of which require training to use the tool effectively.

Ensure that systems, policies and processes are in place to support clinicians who are assessing patients with suspected delirium. The policy should ensure that a locally agreed, validated diagnostic tool for delirium is available and that clinicians are competent in its use. Educate clinicians on the use of the tool, including specified training where required and according to the tool chosen.

Develop and implement protocols for escalating care when acute deterioration occurs.

Ensure that protocols are in place to support accurate documentation and coding of delirium. Monitor rates of delirium to enable quality improvement. Awareness of delirium prevalence can assist in the effective planning of services, such as the capacity for adequate resourcing, which may include specialist nurses.

If you are in hospital and your symptoms suggest that you may have delirium, a clinician will assess you to see if you have delirium. They may ask if you or your family or carer have noticed any recent changes in your thinking or behaviour, such as being confused or agitated, or quieter, sleepier or less communicative than usual. If a family member or carer notices any sudden change in your mental or physical condition, it is important for them to alert a clinician. The clinician will discuss your diagnosis with you and your family or carer, and write down your diagnosis of delirium in your healthcare record. This will help other clinicians to care for you.

Some examples of validated tools to assess for delirium include:

See also: 

Quality statement 5 – Identifying and treating underlying causes

A patient with delirium is offered a set of interventions to treat the causes of delirium, based on a comprehensive assessment that includes relevant multidisciplinary consultation.

Carry out a comprehensive assessment of the patient, in consultation with the patient and their family or carer, to identify possible causes of delirium. Seek a patient summary from the patient’s general practitioner to help inform the investigation.

A comprehensive assessment involves:

  • a medical and social history, paying close attention to the patient’s medication history, including adverse reactions, their pain management needs, and their hydration and nutritional status
  • a physical examination
  • investigations, informed by the medical history and physical examination
  • consultation with other clinicians with relevant expertise (such as a geriatrician, psychiatrist, dietitian), whenever possible. In rural and remote health services this could be facilitated by using telehealth when information technology systems allow.

Start treatment based on the cause when it can be identified. Ensure that the multicomponent interventions recommended for preventing delirium are also in place to manage delirium, including involving family or carers and modifying the environment (see Quality statement 2). Prevention is the most effective strategy, but outcomes for patients with delirium can also be improved by early intervention. Monitor patients regularly for changes in cognition and behaviour, including clinical deterioration.

Ensure that systems and processes are in place to support clinicians in identifying and treating the causes of delirium. Ensure that arrangements support multidisciplinary assessment, including telehealth consultation with clinicians, such as dietitian, nurse practitioner, geriatric medicine or psychiatry consultants when required.

Within a local health region, consider the hub-and-spoke organisation design model to support the provision of multidisciplinary assessment to rural and remote health services. The relationship between the larger hospital (hub) and the rural facility (spoke) could be structured to suit local arrangements, using information and communication technologies.

Provide regular training for staff on strategies to prevent and treat delirium.

If you are diagnosed with delirium, a clinician will carry out a medical check to identify what is causing the delirium and how best to treat it. You and your family or carer will be consulted as part of the assessment. This may include a physical examination, tests (such as blood or urine tests, chest X-ray), a check of the medicines you are taking and any recent changes to them, and checking whether you are in pain. You will receive treatments for anything that may be causing your delirium. For example, your medicines may be changed, you may be given more fluids or you may be given antibiotics if you have an infection.

Quality statement 6 – Preventing complications of care

A patient with delirium receives care to prevent functional decline, dehydration, malnutrition, falls and pressure injuries, based on their risk.

If a patient has delirium, assess, monitor and document their risks of:

  • functional decline
  • falling and being harmed from a fall
  • developing a pressure injury, dehydration or malnutrition.

Put in place interventions tailored to their risk, in consultation with other clinicians, the patient and their family or carer. Examples of interventions for falls prevention can include reorientation, appropriate lighting and ensuring that patients are using their eyeglasses or hearing aids. To lessen the risk of functional decline, encourage mobility and self-care with assistance as necessary.

Assist patients as required throughout the day to ensure that they maintain optimal nutrition and hydration. Ensure dentures are fitted correctly, particularly at mealtimes. For patients at risk of malnutrition, arrange for a dietitian to assess and manage them.

Ensure that systems and policies are in place to support clinicians to identify and manage the risk of functional decline, falls, pressure injuries, malnutrition, dehydration and other complications for patients with delirium. This includes implementation of the National Safety and Quality Health Service Standards (second edition).

Ensure that appropriate resources and equipment are available to decrease the risk of complications (such as low-rise beds for falls prevention).

If you have delirium, your care will include a plan to keep your physical health from getting worse while you are in hospital or another health service organisation. The plan includes ways to prevent falls and having an injury from a fall, such as wearing safe footwear or hip protectors, and care to prevent pressure injuries. You will be offered a nutritious diet to prevent malnutrition and dehydration. You will be encouraged to keep mobile. Your family or carers are encouraged to be involved in your care.

Quality statement 7 – Avoiding use of antipsychotic medicines

Antipsychotic medicines are not recommended to treat delirium. Behavioural and psychological symptoms in a patient with delirium are managed using non-drug strategies.

If a patient with delirium has severe behavioural or emotional disturbance:

  • Investigate possible causes by conducting a comprehensive assessment that includes a medication review. Identify medicines that are known to contribute to delirium and adjust if appropriate, such as medicines with anticholinergic or sedative properties. Ensure that any medical causes for distress and agitation, such as pain, constipation, urinary retention and hypoxia, are treated.
  • Reassure the patient and offer non-drug strategies – involving family or carers, if possible, or one-on-one nursing – to calm the patient and de-escalate the situation.
  • Obtain information about the patient, their needs and preferences, and ways to reduce distress. If the patient cannot provide the information themselves, engage with family or carers, and use a structured tool such as the TOP 5 model.
  • Ensure that the environment is safe for the patient and that noise is minimised, and the patient is observed without the staff invading their personal space.
  • Use verbal and non-verbal techniques to de-escalate the situation, such as:
    • being respectful
    • introducing yourself and using their title rather than their given name if the patient does not know you
    • talking slowly and calmly
    • not disagreeing with the patient
    • asking questions and listening to the answers
    • expressing empathy and concern to show that you have understood
    • inclining your head slightly, to show you are listening and to give you a non-threatening posture
    • acknowledging their feelings and that the situation they find themselves in is frightening or distressing
    • providing a distraction.
  • Avoid using physical or mechanical restraints, as they can increase agitation, prolong delirium and increase the risk of injury.

Evidence does not support the routine use of antipsychotics for treating delirium. However short-term antipsychotic use may be considered in limited circumstances – for instance, when non-drug strategies are unsuccessful and there is an imminent risk of the patient harming themselves or others. In such cases, assess the potential harms and benefits of prescribing an antipsychotic and, whenever possible, discuss the use of the medicine with the patient and family and obtain informed consent. Use the lowest appropriate dose for the shortest possible duration, as described in Therapeutic Guidelines: Psychotropic. A single dose is usually enough. When an antipsychotic medicine has been used in an emergency situation, discuss the use with the patient and their family or carer, so they understand why it was used.

If an antipsychotic is prescribed for a longer duration (more than a single dose), document the plan for the duration of therapy and the criteria for cessation – that is, the change in behaviour to be achieved. Advise the patient and their family or carer that longer-term use of antipsychotics has a greater risk of harm than of benefit, except in limited circumstances. Provide information on the process for review and monitoring the use of the medicine.

Arrange psychiatry or geriatric review for a patient with delirium who has other indications for antipsychotic use, or who has an existing prescription for antipsychotics.

Over-sedation can have serious consequences, such as dehydration, falls, respiratory depression, pneumonia and death. People with Parkinson’s disease or with Lewy body dementia are at an increased risk of severe adverse reactions from antipsychotics. Avoid benzodiazepines when managing delirium, as complications are common and long-acting benzodiazepines increase delirium.

Ensure that policies and systems are in place to treat delirium and to support using non-drug strategies as first-line therapy. The policies should include guidance about the non-drug strategies to be tried, evaluated and documented. These may include patient specialling (cohort care or one-on-one nursing), using specialist delirium/dementia care nurses with expertise in behaviour interventions, and involving family or carers. Provide regular training for clinicians on de-escalation techniques and other non-drug strategies.

Ensure that clinicians have access to guidance about:

  • the potential harms of antipsychotic medicines and current recommendations for their use in delirium
  • appropriate prescribing when there is an imminent risk of self-harm or harm to others, including the appropriate choice of antipsychotic, and dose and duration (such as described in Therapeutic Guidelines: Psychotropic).

Policies should describe the process followed for when an antipsychotic is being considered for a patient at risk of harming themselves or others. The process should include documenting:

  • the non-drug strategies tried
  • how the patient and family will be advised and provide informed consent
  • the process for review, monitoring and cessation of the medicine, including review before discharge.

If antipsychotic use occurs in an emergency context, the policy should ensure that the patient and family or carer are advised.

Ensure that discharge communication to primary care clinicians and care providers, the patient and their family or carer is accurate, to prevent inadvertent continuation of antipsychotics used acutely.

Ensure that systems are in place to minimise the use of physical restraints, and that clinicians are educated in the appropriate use of restraints.

If you have delirium and you are distressed, your healthcare team will investigate what is causing your distress and reassure you, and address anything that is disturbing you, such as pain, discomfort or noise. Your family or carers will be encouraged to be involved in your care.

Antipsychotic medicines (such as the active ingredients quetiapine, olanzapine and risperidone*) are not usually recommended, because they do not help to treat the underlying cause of delirium and their side effects can result in serious harm. They may be considered if you are likely to harm yourself or others, and if it is not possible to reduce your distress in other ways. In this case, a clinician may discuss using an antipsychotic medicine at a low dose for a short time. A single dose may be enough. When an antipsychotic medicine is being considered for this reason, your clinician will discuss with you and your family or carer the choice of antipsychotic medicine, its side effects and benefits, dose, and how long you need to take it for.

Use of devices that restrict movement is avoided whenever possible.

* Antipsychotic medicines active ingredient names include: amisulpride, aripiprazole, asenapine, brexpiprazole, chlorpromazine, clozapine, droperidol, flupentixol, haloperidol, lurasidone, olanzapine, paliperidone, periciazine, quetiapine, risperidone, trifluoperazine, ziprasidone, and zuclopenthixol (Australian Medicines Handbook, July 2021)

Quality statement 8 – Transition from hospital care

Before a patient with persistent or resolved delirium leaves hospital, an individualised comprehensive care plan is developed collaboratively with the patient and their family or carer. The plan describes the patient’s post-discharge care needs and includes strategies to help reduce the risk of delirium and related complications, a summary of changes in medicines and any other ongoing treatment. This plan is provided to the patient and their family or carer before discharge, and to their general practitioner and other regular clinicians within 48 hours of discharge.

Before the patient leaves hospital, develop an individualised comprehensive care plan with the patient and their family or carer, and provide them with information about delirium. In the plan, include the goals of care, strategies for managing persistent delirium, if present, and for preventing delirium recurrence. Include a plan for review by a specialist clinic, specialist or primary healthcare provider 10 days after discharge. Describe all ongoing treatments and any follow-up needed for any comorbidities. Arrange appropriate outpatient rehabilitation services when required. List all medicines that the patient needs to take, specifying the generic drug name, dose, reason for use and duration for each one. Explain why any medicines have been stopped or changed.

Advise the patient of ongoing support services in the community and provide contact details, as appropriate. Provide the care plan to the patient and their family or carer before they leave hospital and to their general practitioner, and other regular clinicians or care providers within 48 hours of the patient leaving hospital. Include information about any cognitive screening tests or assessment carried out in hospital, and when and where the patient should be reassessed, if appropriate. This is especially important for patients whose cognitive function may improve after discharge, to determine their ongoing level of function.

Ensure that systems, policies and procedures are in place for clinicians to provide information about delirium to patients and their family or carer, and to develop an individualised comprehensive care plan with the patient and family or carer before discharge. The care plan should include the details of cognitive screening tests or assessments that were conducted and arrangements for follow-up care post-discharge.

Ensure that systems enable the plan to be provided to the patient’s general practitioner and other regular clinicians and care providers within 48 hours of discharge. Where systems allow, enable uploading of the discharge care plan to the patient’s My Health Record. This enables other clinicians to access the details of the patient’s hospital care, which can be vital for informing ongoing care in the community. Sharing information on the care provided in hospital is particularly important if the patient is discharged to interim care (rehabilitation hospital or respite aged care) before returning home or consulting their usual general practitioner.

Before you leave hospital, a clinician will talk with you and your family or carer about your episode of delirium and the ongoing care you will need when you leave hospital. They will help develop a plan with you and your family or carer in a format that you understand. The plan sets out your goals of care and any extra care you need to stay well and avoid complications from delirium. This may include eating a nutritious diet and drinking enough water. The plan will describe ongoing treatments such as the medicines you need to take and if any medicines have been stopped or changed. It will also include any community support services you have been referred to. You will be given a copy of this plan before you leave hospital. Your general practitioner and other regular clinicians should receive a copy within two days of you leaving hospital.

Indicators 

The Commission has developed a set of indicators to support clinicians and health services to monitor how well they are implementing the care described in this Clinical Care Standard. Clinicians and health service organisations can use the indicators to support local quality improvement activities. No benchmarks are set for any indicator by the Commission.

When using the indicators, please refer to the definitions required to collect and calculate indicator data which are specified online at Metadata Online Registry (METeOR).

You can find a description of each indicator below with links to its individual specifications. 

Indicator 1aEvidence of a locally approved policy that defines the process for delirium risk identification, screening and assessment
Indicator 1bProportion of admitted patients aged 65 years or older or 45 years or older for Aboriginal and Torres Strait Islander people who were screened for cognitive impairment using a validated tool within 24 hours of presentation to hospital
Indicator 2Evidence of a locally approved policy to ensure interventions are implemented to prevent delirium for at-risk patients
Indicator 4aProportion of admitted patients who screened positive for cognitive impairment on presentation to hospital who were then assessed for delirium using a validated tool
Indicator 4bEvidence of a locally approved policy that defines the process for monitoring rates of delirium and improving documentation of delirium
Indicator 5aProportion of patients with delirium who had a comprehensive assessment that includes relevant multidisciplinary consultation to investigate the cause(s) of delirium
Indicator 5bProportion of patients with delirium who received multicomponent interventions to treat delirium
Indicator 6aProportion of patients with delirium who were assessed for risk of functional decline, dehydration, malnutrition, falls and pressure injuries
Indicator 6bProportion of patients with delirium who experienced dehydration, malnutrition, a fall resulting in fracture or other intracranial injury or a pressure injury during their hospital stay
Indicator 7Proportion of patients with delirium who were prescribed antipsychotic medicines in hospital
Indicator 8aProportion of patients with current or resolved delirium who had an individualised comprehensive care plan on discharge
Indicator 8bProportion of patients aged 65 years or older or 45 years or older for Aboriginal and Torres Strait Islander people who experienced delirium in hospital and were readmitted for delirium within 10 days

Cultural safety and equity for Aboriginal and Torres Strait Islander peoples 

Health outcomes for Aboriginal and Torres Strait Islander peoples can be improved by addressing systemic racism and other root causes that reduce access to care. Historical and current contributing factors include a lack of culturally safe care, culturally appropriate health education and sociocultural determinants such as differences in employment opportunities.

The considerations for improving cultural safety and equity in this Clinical Care Standard focus primarily on overcoming cultural power imbalances and improving outcomes for Aboriginal and Torres Strait Islander people through better access to health care

Cultural safety and equity recommendations in this document have been developed in consultation with Aboriginal and Torres Strait Islander individuals, clinicians and representative health service organisations. However, it is recognised that cultural safety is determined by the Aboriginal and Torres Strait Islander individuals, families and communities experiencing the care.

Recommendations 

When implementing this Clinical Care Standard, cultural safety can be improved through embedding an organisational approach such as described in the recommendations below. Specific considerations for cultural safety for people undergoing colonoscopy are provided throughout this Standard.

When providing care for Aboriginal and Torres Strait Islander people, particular consideration should be given to the following recommendations.

  • Ensure systems and processes support people to self-report their Aboriginal and Torres Strait Islander status and to record self-identification.
  • Ensure all staff engage regularly in cultural safety training.
  • Implement the six actions for Aboriginal and Torres Strait Islander Health from the NSQHS Standards.
  • Provide flexible service delivery to optimise attendance and help develop trust with individual Aboriginal and Torres Strait Islander people and communities.
  • Establish robust communication channels and referral pathways with primary healthcare providers (including Aboriginal Community Controlled Health Organisations [ACCHOs]).
  • Where possible, provide outreach services close to home, on Country or in collaboration with ACCHOs or other community healthcare providers.
  • Take a collaborative approach to ensure that interventions are suitably tailored to the individual’s personal needs and preferences for care.
  • Encourage the inclusion of support people, family and kin or the person’s trusted healthcare provider (such as their ACCHO) in all aspects of care, including decision making and planning treatment and management.
  • Engage culturally appropriate interpreter services and cultural translators when this will assist the patient.
  • Involve Aboriginal and Torres Strait Islander Health Workers or Aboriginal and Torres Strait Islander Health Practitioners as part of a patient’s multidisciplinary team and involve Aboriginal and Torres Strait Islander Liaison Officers in hospital settings.
  • Use culturally and linguistically appropriate materials to aid in communication and discussion, accounting for varying levels of health literacy.

Resource hub

For clinicians and healthcare services

The resources below have been developed to support clinicians and healthcare services to implement the care described in the Standard.

Clinician Fact Sheet - Delirium Clinical Care Standard

Health Service Organisations Information Sheet - Delirium Clinical Care Standard

The following resources have been identified as relevant to the Clinical Care Standard.

Tool databases and lists

Screening for cognitive impairment and delirium

Validated tools for screening for cognitive impairment include:

Some tools for assessing delirium may not be appropriate for repeat measurement and monitoring. Tools suitable for monitoring for incident delirium include:

  • Confusion Assessment Method ICU (CAM-ICU)
  • Delirium Observation Screening (DOS) scale (13-item)
  • Recognising Acute Delirium as Part of Your Routine (RADAR)
  • Modified Richmond Agitation-Sedation Scale (mRASS)
  • Single Question in Delirium (SQiD)
  • Nursing Delirium Screening Scale (Nu-DESC).
     

Tools for assessing and diagnosing delirium

Some examples of validated tools to assess for delirium include:

The current diagnostic standard for delirium is described in the Diagnostic Statistical Manual of Mental Disorders, Fifth Edition (DSM-5). 

Other resources

For consumers

The Commission has developed the below resource to provide guidance and support. You can use this information to help you and your support people make informed decisions about your care together with your healthcare provider.

Consumer Guide - Delirium Clinical Care Standard

The following resources have been identified as relevant to the Clinical Care Standard.

Examples of patient information about delirium can be found at:

Related resources are also provided within the relevant quality statement.

Launch of the updated Standard, 2021

The updated Delirium Clinical Care Standard was launched at the Australasian Delirium Association Conference, DECLARED 2021, in September 2021.

At the Conference Professor Kurrle discussed the impact of the Delirium Clinical Care Standard. 

Professor Susan Kurrle - Delirium Clinical Care Standard: before and after

Professor Susan Kurrle, geriatrician and Curran Chair in Health Care of Older People in the Faculty of Medicine and Health at the University of Sydney, describes the Delirium Clinical Care Standard and illustrates its impact using before and after case studies. Professor Kurrle provides practical advice on improving care for people with cognitive impairment at risk of delirium using examples and strategies she and her team have implemented.

 

Updates to the Standard

The Delirium Clinical Care Standard was last updated in 2021. Changes in that version of the Delirium Clinical Care Standard included:

  • a new quality statement regarding information and support for patients and families to reduce the distress and severity of symptoms of delirium
  • changes to the quality statement on preventing complications of care to include functional decline, malnutrition and dehydration in addition to falls and pressure injuries
  • changes to reflect current evidence that the routine use of antipsychotic medicines is not recommended for a patient with delirium.
     

More about the Standard

About 10–18% of Australians aged 65 years or older have delirium at the time of admission to hospital, and a further 2–8% develop delirium during their hospital stay. 

Delirium is more common among older patients, but it also occurs in other age groups. Prevalence is higher in critical care and hospital palliative care settings, and rates in residential aged care services exceed those in the general community.

Prevention is the most effective strategy, but early intervention can also improve outcomes for patients with delirium.

This Clinical Care Standard has been widely implemented in Australian hospitals since it was first released in 2016. The standard builds on other work undertaken by the Commission, such as the cognitive impairment program and the A Better Way to Care resources. In 2019–20, the rate of delirium as a hospital-acquired complication was 35.7 per 10,000 admissions.

The NSQHS Comprehensive Care Standard, Action 5.29 requires health service organisations to incorporate best-practice strategies for the early recognition, prevention, treatment and management of cognitive impairment in their systems of care, including the Delirium Clinical Care Standard.

Read more about the scope and goal of this Standard or see further background in the Delirium Clinical Care Standard

Although this Standard applies primarily to the care received by patients in hospitals, it can also be adapted for use in residential aged care services. For example, a change in location or in the clinical condition of a patient may increase the risk of delirium and prompt the need for the interventions described in the Standard.

Not all quality statements in this Standard will be applicable to every healthcare service or clinical unit. Healthcare services should consider their individual circumstances in determining how to apply each statement. 

When implementing this Standard, healthcare services should consider:

  • the context in which care is provided
  • local variation
  • quality improvement priorities of the individual healthcare service. 

In rural and remote settings, different strategies may be needed to implement the standard. For example, the use of:

  • hub‑and‑spoke models integrating larger and smaller health services and ACCHOs
  • telehealth consultations
  • multidisciplinary teams including allied health involvement where clinically appropriate.

The Standard relates to the care that adult patients (18 years and older) with suspected delirium – or are at risk of developing delirium – should receive, from presentation to hospital through to their transition to primary care. Many quality statements in the Delirium Clinical Care Standard also apply to patients with delirium receiving palliative or end-of-life care. Specific guidance on the management of delirium in patients receiving palliative care should also be consulted if appropriate.

The Delirium Clinical Care Standard is described in several actions within the NSQHS Standards including:

  • Clinical Governance Standard: Actions 1.27b and 1.28
  • Comprehensive Care Standard: Action 5.29
  • Recognising and Responding to Acute Deterioration Standard: Actions 8.058.06 and 8.07.

The factsheet on Applicability of Clinical Care Standards describes requirements around implementation of the Delirium Clinical Care Standard for accreditation to the NSQHS Standards.

Find out more about how healthcare services are expected to implement the national standards in How to use the Clinical Care Standards.

The Commission is committed to supporting healthcare services to provide culturally safe and equitable healthcare to all Australians. 

Person-centred care recognises and respects differences in individual needs, beliefs, and culture. The Commission: 

  • is committed to supporting healthcare services to provide culturally safe and equitable healthcare to all Australians
  • acknowledges that discrimination and inequity are significant barriers to achieving high‑quality health outcomes for some patients from culturally and linguistically diverse communities.

Culturally safe service provision and environments are those where the places, people, policies and practices foster mutual respect, shared decision making, and an understanding of cultural, linguistic and spiritual perspectives and differences. Cultural safety is supported by organisations and individuals that recognise cultural power imbalances and actively address them by: 

  • ensuring access to and use of interpreter services or cultural translators when this will assist the patient and aligns with their wishes
  • providing visual or written information in a language that the patient, their family and carers will understand
  • providing cultural competency training for all staff
  • encouraging clinicians to review their own beliefs and attitudes when treating and communicating with patients
  • identifying variation in healthcare provision or outcomes for specific patient populations, including those based on ethnicity, and responding accordingly.

The Delirium Clinical Care Standard has been endorsed by a number of key organisations:

  • Australasian Delirium Association
  • Australasian College for Emergency Medicine
  • Australian Association of Gerontology
  • Australian & New Zealand College of Anaesthetists
  • Australian College of Nurse Practitioners
  • Australian College of Rural and Remote Medicine
  • Australian and New Zealand Society for Geriatric Medicine
  • Australian and New Zealand Orthopaedic Nurses Association
  • Australasian Rehabilitation Nurses’ Association
  • Dementia Australia
  • Psychogeriatric Nurse’s Association Australia (Inc)
  • Society of Hospital Pharmacists of Australia
  • Therapeutic Guidelines Ltd
  • The Royal Australasian College of Physicians (RACP)
  • The Royal Australian & New Zealand College of Psychiatrists (RANZCP)

The Commission develops Clinical Care Standards taking into account:

  • advice from multidisciplinary topic working groups which include clinicians, consumers, and researchers
  • consultation with key stakeholders including consumer bodies, professional organisations, and state and territory health departments. 

The Delirium Clinical Care Standard Topic Working Group provided expert advice on the development and review of the Standard. In addition, a targeted consultation process was conducted with key stakeholders.

Delirium Clinical Care Standard - Topic Working Group

The original topic working group was consulted in the review of the Delirium Clinical Care Standard and provided advise on the revised Standard.

The role of the Topic Working Group was to:

  • advise on the scope and key components of care for the Standard
  • advise on key sources of evidence including clinical practice guidelines, standards and empirical literature to build upon the body evidence supporting the existing model
  • advise on the formulation of quality statements and supporting indicators
  • recommend strategies to support the implementation of the Standard
  • actively support raising awareness of the Standard.

All members are required to disclose financial, personal and professional interests that could, or could be perceived to, influence a decision made, or advice given to the Commission. Disclosures are updated prior to each meeting and managed in line with the Commission’s Policy on Disclosure of Interests.

A review was carried out to assess consistency with key guidelines released since the standard was first published, including those from the National Institute for Health and Care Excellence, the Scottish Intercollegiate Guidelines Network, and the current Therapeutic Guidelines (eTG). 

Evaluation findings

Evaluation of the Delirium Clinical Care Standard was undertaken as part of the review process in 2020. The evaluation found that:

  • 98% of respondents reported that the Delirium Clinical Care Standard was relevant to their practice
  • 73% reported changes to practice at an organisation level as a result of implementing the Delirium Clinical Care Standard.

Read more about the impact of the Delirium Clinical Care Standard in the evaluation report.

Delivering on ‘right care, right place, right time’. How clinical care standards are improving health care in Australia: An evaluation report

Last updated: 27 March 2026