Assessment and Management of Post-Traumatic in Acute Procedure Traumatic Brain (Adults)

TABLE OF CONTENTS

1. Definitions   Post-traumatic amnesia  Glasgow Coma Scale  Abbreviated Westmead PTA Scale  Westmead PTA Scale  Classification of traumatic brain injury 2. Precautions/Contraindications 3. Equipment 4. Standard Requirements 5. Procedure  Determining the appropriate PTA scale to use based on GCS score  Monash Health Procedure for the assessment and management of PTA in TBI and referral pathways  Screening using the AWPTAS (MILD TBI)  Guidelines to assist with decision-making in ED for admission of TBI patients to the wards of Monash Health  Screening using the WPTAS (MODERATE TO SEVERE TBI)  Complicating factors when assessing PTA  Discharge planning  Decision-making-capacity  PTA documentation and communication  Supporting and managing symptoms of PTA 6. Related documentation 7. Background 8. Key standards, guidelines or legislation 9. References 10. Keywords TARGET AUDIENCE and SETTING

This procedure applies to all staff working with adult patients presenting to Monash Health with suspected or confirmed traumatic brain injury (closed ) in the acute setting.

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Assessment and Management of Post-Traumatic Amnesia in Acute Procedure Traumatic Brain Injury (Adults)

PURPOSE

This document was created to provide evidence-based information on the definition of PTA, and current clinical practice guidelines for the standardised assessment and management of PTA in the context of traumatic brain injury. This procedure was created to ensure a consistent interdisciplinary approach to the care of patients experiencing PTA, in alignment with the National Safety and Quality Health Services (NSQHS) Standard 5: Comprehensive Care.

This procedure does not cover the medical and surgical management of closed head injury. Please follow the appropriate unit, hospital and state processes for the primary management of traumatic brain injury.

DEFINITIONS

 Traumatic brain injury (TBI): Brain injury caused by an external mechanical force such as a blow to the head, concussive force, acceleration-deceleration force or projectile missile.  Post-traumatic amnesia (PTA): Immediate stage of recovery after a TBI when the person has emerged from loss of consciousness or coma but remains confused.  Glasgow Coma Scale (GCS): A neurological scale that provides a reliable and objective way of recording the conscious state of the patient. The GCS is a 15-point scale  The Abbreviated Westmead Post Traumatic Amnesia Scale (A-WPTAS): Screening tool used to examine PTA in people with mild TBI  The Westmead Post Traumatic Amnesia Scale (WPTAS): Screening tool used to examine PTA in adults with moderate to severe TBI

Refer to BACKGROUND for full clinical definitions, descriptions and the importance of assessment of PTA.

CLASSIFICATION OF BRAIN INJURY SEVERITY USING PTA The severity of TBI can be classified based on the degree of disturbance to consciousness (coma) as measured by the GCS, in addition to the duration of PTA. A commonly identified classification system is as follow:

TABLE 1: CLASSIFICATION OF BRAIN INJURY SEVERITY MODERATE SEVERE VERY SEVERE EXTREMELY MILD * SEVERE GCS 13-15 GCS 9-12 GCS 3-8 GCS 3-8 GCS 3-8 (Must obtain E4 & M6 on GCS) PTA <24 hrs PTA 1-24 hrs PTA 1-7 days PTA 1-4 weeks PTA > 4 weeks

Source: Guidelines for the NSW Compulsory Third Party Scheme and Lifetime Care and Support Scheme (2013) created by clinical working party review. This has been based on the combination of numerous classifications systems including the original index of severity based on GCS score (Teasdale & Jennett, 1974) and PTA duration index (Jennett & Teasdale, 1981 as referenced in Stein, 1996) and combined criteria as seen in The Mayo Classification System (Malec et al., 2007).

*Mild Traumatic Brain Injury Most mild TBIs do not result in gross structural changes to the brain (Giza & Hovda, 2004). Axons may be stretched or twisted, without being sheared or torn, and therefore recover over time (Iverson, 2005). According to consensus guidelines, it is rare (approximately 5-15%) for patients who sustain a mild TBI to obtain an abnormality on CT scan or require neurosurgical intervention (approximately 1-3%; New South Wales Ministry

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Assessment and Management of Post-Traumatic Amnesia in Acute Procedure Traumatic Brain Injury (Adults) of Health, 2011). Symptoms of a mild TBI must be separated from other factors that can result in alterations in and mental state, such as substance use, medications and psychological trauma. The majority of individuals who sustain a mild TBI make a full recovery within days and weeks after the injury, and persisting symptoms are referred to as ‘post concussive syndrome’ (McHugh et al, 2006; NSW Ministry of Health Guidelines, 2011; Ontario Neurotrauma Foundation Guidelines, 2013). Excessive focus on, or failing to validate, transient symptoms of mild TBI can lead to delays and complications in recovery and adjustment processes in this patient group.

Complicated Mild Traumatic Brain Injury A ‘complicated mild TBI’, is an injury that meets the above criteria for mild TBI, but also includes trauma related structural abnormality, such as a contusion on the brain (as confirmed on CT scan on the day of injury) that does not require surgery (Carroll et al., 2004). Longer-term outcome and recovery trajectories differ in mild complicated TBI as compared to typical mild TBI.

PRECAUTIONS/CONTRAINDICATIONS

Staff to maintain personal safety at all times. If the patient is agitated and the safety of staff a concern at any time, consider abandoning the clinical contact until a more appropriate time. Refer to other relevant Monash Health procedures and guidelines: Code grey, aggressive, violent patient escalation: Implementation tool Delirium in hospital: Clinical guideline Acute behavioural disturbance: Clinical guideline Preventing falls and harm from falls

EQUIPMENT

 Abbreviated Westmead Post-Traumatic Amnesia Scale (A-WPTAS) – Interactive View on EMR o Set of 3 Picture Cards from the A-WPTAS in printed/paper form o A-WPTAS picture card recognition chart (option of 9 pictures) in printed/paper form o Pictures have been displayed at the end of this document  Westmead Post-Traumatic Amnesia Scale (WPTAS) – PowerForm on EMR o Set of 9 Picture Cards from the WPTAS in printed/paper form o For weekend testing, staff will require a set of 3 photos. One of the regular examiner plus photos of 2 other staff members

STANDARD REQUIREMENTS

When undertaking any clinical interaction with a patient, staff are expected to:  Perform routine hand hygiene. Refer to the Hand Hygiene Procedure.  Introduce themselves to the Patient and Carer/ Family if in attendance, as per standard clinical practice.  Check patient identification. Refer to the Patient Identification Procedure.  Obtain consent for participation.  Document interaction in the electronic medical record or health record using black pen; including date, time, signature and designation. It is expected that staff are familiar with the relevant procedures and know when to undertake each step. Staff who are expected to undertake this procedure regularly must ensure they have completed all relevant training.

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Assessment and Management of Post-Traumatic Amnesia in Acute Procedure Traumatic Brain Injury (Adults)

PROCEDURE

Refer to flow chart on page 5 (figure 2) for full procedure. Indications to suspect a traumatic brain injury (TBI) include an impact to the head resulting in confusion or disorientation; alteration in GCS; anterograde or retrograde amnesia; or a period of loss of consciousness. Following arrival of a patient to the Emergency Department (ED) with a suspected brain injury, or post-fall on the ward, the GCS must be administered at the first instance. If the person’s initial GCS score (at the scene or at presentation to ED) was less than 13, conduct the Westmead PTA scale (WPTAS)* daily when the person is admitted to a ward. If the person’s initial GCS (at the scene or at presentation to ED) was 13 or above (with optimal motor and eye opening scores), administer the Abbreviated-Westmead PTA scale (A-WPTAS)* hourly. See figure 1 below.

Figure 1. Determining the appropriate PTA scale to use based on GCS score (Source: Adapted from Macquarie University, Sydney Australia, Department of Psychology Education Module) *Please note that this flowchart assists with determining the appropriate PTA scale to utilise ONLY, it not guide other aspects of clinical management of the patient.

* Testing considerations:  Review the patients file and liaise with treating team regarding the patient’s behaviour and most appropriate time of day for test administration  Where possible, ensure the testing environment is quiet and free from distractions (i.e. radios/televisions). Remove clocks and orientation boards prior to commencement of the assessment  The A-WPTAS & WPTAS are screening measures only and not diagnostic tools. Screening scores must not be interpreted as an absolute, and clinical judgement is always required  Drug and/or alcohol intoxication is not a preclusion for assessment but ought to be factored into the clinical assessment and decision making  The patient can provide answers via verbal responses, writing, pointing to printed answers, indicating “yes” or “no” when prompted, or via interpreter Further information on testing considerations can be found in the background section.

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Assessment and Management of Post-Traumatic Amnesia in Acute Procedure Traumatic Brain Injury (Adults)

Figure 2. Procedure for the assessment and management of PTA in TBI and referral pathways

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Assessment and Management of Post-Traumatic Amnesia in Acute Procedure Traumatic Brain Injury (Adults)

1. SCREENING USING THE A-WPTAS (FOR MILD TBI ONLY) Indications:  When the patient’s initial and current GCS is between 13 and15 (with points lost only for disorientation/ verbal component of the GCS)  Administered in ED or after acute injury, as soon as possible, and when feasible with consideration of the patient’s presentation and ability to co-operate (e.g. agitation or combativeness)  Only to be used within the first 24 hours of sustaining a brain injury*

Administration: Refer to the ‘Interactive View’ on EMR for full administration and scoring instructions. Questions are to be asked in the order they appear on the test forms and then scored accordingly 1.1. The A-WPTAS is initially scored out of 15 at time 1 (T1) as the first administration is the GCS only. The three pictures are presented at this administration point and recall of the pictures is included in subsequent administrations, i.e. time 2 (T2) and onwards. 1.2. All subsequent administrations are therefore scored out of 18 (GCS assessment + recall component). 1.3. Administer the A-WPTAS hourly (or as close to hourly as practical) until a perfect score of 18/18 is achieved, whereby the test is considered to be ‘passed’. Do not exceed the T5 administration time point. 1.4. A patient is deemed to be ‘out of PTA’ when first scoring 18/18. The A-WPTAS can subsequently be ceased and no further cognitive testing is required. 1.5. If a patient does not pass the A-WPTAS (i.e. does not achieve a score of 18/18) four times in succession, i.e. at time 5 (T5), the patient remains in PTA and must be investigated/monitored further as per standard TBI clinical management guidelines. 1.6. Failure of the A-WPTAS: If the patient does not pass the A-WPTAS in ED, they are to be admitted to the SSU for a 24-hour period of monitoring (irrespective of normal CT scan results). Referral is made to an ED care- coordinator or for further cognitive investigation and discharge planning. During normal business hours the occupational therapist aligned to the treating unit in ED can prioritise the referral and undertake further assessment, as indicated. After hours occupational therapy service in ED is not available and weekend service is limited. Outside of normal business hours referrals are made to an ED care- coordinator. 1.7. Determining the presence of PTA at 24 hours post-injury: The A-WPTAS can be re-administered prior to discharge from the SSU to determine the presence of PTA, if this cannot otherwise be ascertained by multidisciplinary review, including occupational therapy input. This re-administration must be conducted within 24-hours of the injury and using a new A-WPTAS entry in the EMR. If the patient is still demonstrating active PTA symptoms 24-hours after the sustained injury time point and has not been clinically improving, the brain injury is no longer considered to be mild in severity (refer to table 1 for TBI classifications). Admission to an acute ward is now indicated. Table 2 provides clinical guidelines to aid in deciding on the admitting unit.

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Assessment and Management of Post-Traumatic Amnesia in Acute Procedure Traumatic Brain Injury (Adults)

Table 2. Guidelines to assist with decision-making in ED for admission of TBI patients to the wards of Monash Health.

NEUROLOGY GENERAL MEDICINE OTHER Neurological trauma Complex medical co- Haematoma, CSF leak or other Multi-trauma - not deemed to be morbidities findings that require surgical consider transfer major intervention or neurosurgical to Level 1 Trauma Older adult with history management Centre of cognitive concerns

No surgical intervention required

At the point of admission to a medical unit/ward, the occupational therapist aligned to the unit must commence the full Westmead PTA scale (WPTAS) as per standard protocol. 1.8. Delayed hospital presentations: If a patient presents to ED with a GCS ≥ 13 and greater than 24 hours after the sustained injury, do not administer the A-WPTAS (the A-WPTAS was designed only for use <24 hrs after injury). Following medical review and diagnosis, however, continue managing the patient as a mild TBI as per Point 4. Discharge planning (listed below). 1.9. Guidelines for consideration of CT scanning of the brain for suspected mild TBI in ED Various clinical decision rules for CT scanning of adults with mild TBI are available. The following recommendations have been obtained from the adult trauma clinical practice guidelines for the initial management of closed head injury in adults, 2nd Edition (NSW Ministry of Health, 2011). These guidelines have been adapted from the Canadian CT Head rule (Stiell et al., 2001). Those who are at an increased risk of clinically significant lesions, require acute neurosurgical intervention, or require prolonged observation, must have early CT of the brain if they have any of the following features:  GCS <15 at two hours post injury (including those with an abnormal GCS due to drug or alcohol ingestion)  Focal neurological deficit  Clinical suspicion of a skull fracture  Vomiting  Known coagulopathy or bleeding disorder and/or use of anti-platelet or anticoagulant medications  Age > 65  Prolonged loss of consciousness (>5min)  Witnessed

On serial assessment, considerations include:  Decrease in GCS  Persistent GCS < 15 at two hours post injury  Persistent abnormalities in alertness, behaviour, cognition  Persistent PTA (A-WPTAS <18/18 at 4 hours post injury)  Persistent vomiting (≥ 2)  Persistent severe headache

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Assessment and Management of Post-Traumatic Amnesia in Acute Procedure Traumatic Brain Injury (Adults)

 Post traumatic seizure Clinical judgement is also required in instances where there has been any of the following:  A large scalp haematoma or laceration  Associated multi-systems which may distract from subtle neurological sings, and/or where analgesia, procedural sedation or general anaesthesia has been used  A particularly dangerous mechanism to the injury (e.g. pedestrian/cyclist vs vehicle; ejection from vehicle; fall >1m; or focal blunt trauma to the head)  Pre-existing neurological/neurosurgical conditions making clinical assessment difficult  Delayed hospital presentation or representation with persistence of symptoms or new symptoms

No clinical decision rule is perfect and decisions for CT scanning must always be made in conjunction with clinical evaluation and would not override clinical judgment. Consultation must occur with the neurosurgical service. Also refer to the Monash Health clinical guideline on minor head injury - patients on anticoagulant or antiplatelet therapy.

2. SCREENING USING THE WPTAS (FOR MODERATE TO SEVERE TBI ONLY)

Indications:  When initial GCS on presentation was less than 13  When the A-WPTAS was not-passed at the T5 administration time point and PTA is ongoing and present 24 hours after the injury and the person is admitted to a ward  When the patient has regained consciousness and can communicate intelligibly

Administration: Refer to the WPTAS PowerForm on EMR for full administration and scoring instructions. Questions are to be asked in the order they appear on the form and then scored accordingly 2.1. Administered once daily (every 24 hours) by the same person, at the same time of day (where possible). Typically conducted by the ward occupational therapist 2.2. The WPTAS is scored out of 7 on day 1 (first administration time point), as questions relating to recall of the name and face of the examiner and recall of the picture cards can only occur after initial learning of this information 2.3. The WPTAS is scored out of 12 on day 2 and subsequent days 2.4. Continue the WPTAS assessment over weekends and public holidays. If the occupational therapists are unavailable, an alternate appropriately trained staff member would continue the assessment of the WPTAS, i.e. nursing staff, ANUMs and/or trained medical practitioners.

2.5. The period of PTA may be deemed over on the first of 3 consecutive days of a score of 12/12. However, this must not be interpreted as an absolute rule. Use clinical judgement to cease administration of the WPTAS prior to 3 consecutive days of scoring 12/12 if the patient does not display behavioural manifestations of PTA.

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Assessment and Management of Post-Traumatic Amnesia in Acute Procedure Traumatic Brain Injury (Adults)

3. Complicating factors when assessing PTA Complicating factors and confounders can be present in the screening of PTA. Sub-optimal screening results may be due to factors other than PTA. These include the following:  Pre-existing acquired brain Injury or  Non-English speaking background and cultural differences  Previous level of education  Drug &/or alcohol history: Recent usage, withdrawal or detoxification  Medications affecting alertness (specially opioids or psycho-active medication)  Speech and language deficits (pre-existing or new)  Participation factors: e.g. unwillingness to engage in assessment, frustration, agitation, anxiety  Psychiatric conditions  Dementia and/or delirium  Physical condition of the patient (e.g. pain)  Vision and hearing difficulties (ensure aids are used)

In such instances the WPTAS or A-WPTAS may not be the most appropriate tool to use, and alternative or adjunctive screening measures is to be considered by appropriately trained ward staff. Examples of alternative measures include the Galveston Orientation and Amnesia Test (GOAT) and/or the Orientation Log (O-Log). Referral to neuropsychology can assist in these instances. Determination of the presence of PTA must not be solely based on a screening results alone and ought to be a combination of screening and information regarding the patient’s behavioural and psychological function as witnessed by family and staff. If the patient’s PTA score is not improving, consider referral to neuropsychology prior to terminating PTA assessment. The neuropsychologist can assist in identifying ‘non-PTA factors’ that may be accounting for the patient’s clinical presentation. Neuropsychology services are only available during business hours and not on weekends.

4. Discharge planning Accurate assessment and management of PTA requires an interdisciplinary approach, and careful and higher- level discharge planning. Interdisciplinary input includes:  Neuropsychology to establish the presence of PTA, if this has been difficult to ascertain  Neuropsychology for formal cognitive assessment and management of TBI symptoms, once PTA has resolved (this may occur as an outpatient or via inpatient rehabilitation)  Occupational therapy for functional cognitive assessment and management  Speech pathology if speech, language, cognitive-communication and/or swallowing issues are present  Physiotherapy for rehabilitation of motor and sensory impairments, management and support of respiratory function as required  Social work to support patients and their families  Consultation-Liaison Psychiatry and Addiction Medicine services for patients with co-morbid or pre- existing psychiatric conditions, behaviour disturbance, and/or substance use history  Rehabilitation and Aged Care Liaison Services (RALS) for consideration for inpatient rehabilitation/subacute admission, as necessary

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Assessment and Management of Post-Traumatic Amnesia in Acute Procedure Traumatic Brain Injury (Adults)

4.1. Appropriate discharge destination  Optimally, patients in active PTA are not discharged home, but if so, they are discharged into the care of a responsible adult with sufficient education for management  The treating medical team, in consultation with the allied health team, have responsibility for determining the patients’ appropriateness for discharge  If the patient is still experiencing PTA, and once medically stable, they can be transferred to subacute or a referral made to a specialist inpatient ABI unit. A complete handover of the patient’s PTA assessments to the subacute ward is required, in addition to their management plan  If a patient in PTA absconds from hospital, the treating team must contact the police and next of kin immediately

4.2. Discharge supports  If a patient who initially presented to ED with a GCS of ≥ 13, passes the A-WPTAS within the first 24- hours of the injury / admission, and is discharged home, ensure they receive a diagnosis of mild TBI and obtain adequate education regarding their condition (refer to Mild traumatic brain Injury: Information for patients, families and carers)  Refer these patients for outpatient neuropsychology for follow-up by the ED medical team. The Monash Health neuropsychology Unit will make contact with them in the weeks following their hospital presentation to ensure they are progressing well. If further assessment and intervention is required, the patient can attend neuropsychology outpatient for full review

5. Decision-making capacity  Patients in PTA are typically NOT capable of making their own decisions due to being in a confusional state. If a patient is in PTA and wishes to self- discharge against medical advice, and cannot be redirected, a Code Grey must be called and staff must obtain security support to attempt to maintain the patient in a safe environment with supervision  If there is doubt around the patient’s PTA status (e.g. end stage PTA) the treating medical team is required to make a decision as to whether the patient is able to competently self-discharge. This decision usually involves consultation with key staff involved in the patient’s care. Referral to neuropsychology can be made to assess decision-making capacity formally, if this is not clear from a medical perspective  In instances of more complex decision-making capacity or consent, refer to Consent to Medical Treatment: Operational Policy and also consult with the Office of Public Advocate and Monash Health Legal Office (as needed). In some cases, consultation or referral to Social Work and/or neuropsychology may be necessary.

6. Third party interview and/or access to a patient experiencing PTA within the hospital setting All police, media and third-party requests to access a patient and/or their personal health information are required to go through the hospital Legal Office and/or Medical Information Unit of Health Information Services. Refer to Privacy Release of Information: Procedure

7. PTA documentation and communication  Document the overall PTA score after each administration time point. Cross-reference PTA screening results in the inpatient progress note entry, using standard hospital documentation procedures: i.e. date, time, name of examiner, profession, designation, signature and contact details

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Assessment and Management of Post-Traumatic Amnesia in Acute Procedure Traumatic Brain Injury (Adults)

 Include a summary of errors made and the patient’s presenting behaviours during the assessment  Document implications of the PTA score and implications for ED/ward management and discharge planning and update the treating team regularly  Once you have appropriately assessed and documented PTA for moderate to severe TBI patients (typically on the ward), provide carers and families with written and verbal education regarding PTA. Refer to: Post Traumatic Amnesia: Information for patients, families and carers. Document in the progress note that you have done so.  Once you have appropriately assessed and documented mild traumatic brain injury (typically in ED) and/or after a fall or new injury during a hospital admission, provide patients, carers and families with written and verbal education regarding mild TBI. Refer to: Mild traumatic brain Injury: Information for patients, families and carers. Document in the progress notes and discharge papers that you have done so.

8. Supporting and managing symptoms of PTA The following are important considerations and management strategies for patients in PTA and during acute recovery from TBI. These will assist in maximising the patient’s recovery, supporting their behaviour, and reducing the potential of further risk to patient, staff and visitors. 8.1. Physical environment:  Monitor sensory information, including noise and visual stimulation, and the effect on the patient’s behaviour  Reduce lighting or minimise TV or radio if this is beneficial, but also be aware if these are helpful in soothing the patient.  Carefully monitor for increases or decreases in agitation in response to the environment and amend accordingly  Reduce clutter within the immediate environment  Consider placing the patient in a high visibility room and/or consider a single room to minimise sensory overload  Minimise the number of room changes to prevent further confusion/disorientation  Assess and manage the environment for patients at high risk of falls  Assess and manage pressure injuries in restless and agitated patients e.g. those with padded cot sides  Utilise staff who are trained in the management of PTA for patients that require frequent re-direction or de-escalation

8.2. Communication strategies:  Use the patient’s preferred name  Use signs to label the patient’s environment and frequently refer back to these  Implement simple, clear, and consistent instructions  Educate and involve family/carers of the patient’s presentation and progress

8.3. Daily routine and structure:  Provide a structure for the day including rest periods  Ensure the person’s immediate needs are being met e.g. personal care and eating at regular meal times at regular intervals  Minimise interruptions during meal times

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Assessment and Management of Post-Traumatic Amnesia in Acute Procedure Traumatic Brain Injury (Adults)

 Modify interventions and rehabilitation/therapy sessions that rely heavily on memory and recall of information. Consider implementing memory techniques such as procedural or errorless learning to facilitate therapy sessions during active PTA (refer to Trevena-Peters et al., 2017. Efficacy of Activities of Daily Living Retraining During Posttraumatic Amnesia: A Randomized Controlled Trial. Archives of physical medicine and rehabilitation).

8.4. Patient safety – As per National Safety and Quality Health Service (NSQHS) standards:  Avoid indwelling catheters  Minimise falls risk (refer to Monash Health Falls Prevention Procedure for full details: Preventing falls and harm from falls  Identify and respond to triggers that may lead to increased agitation, distress or confusion  Minimise mechanical and pharmacological restraints, where possible  Consider utilising a patient attendant if the patient is at risk of absconding  Consider using alert bracelets/arm bands for wandering patients

8.5. Family and visitor involvement:  Limit visitors (suggested maximum of two at a time) and ensure short visiting periods, in the early stages of PTA and particularly if increase noise and stimulation is agitating for the patient  Provide education to the patient’s family and significant others to assist them in understanding what PTA is  Provide education and support as to how family/visitors can assist the patient and team to support and manage PTA symptoms  Familiar faces can assist with reassuring a patient, provided that the visitors are not overstimulating or distressing to the patient  Completion of the Sunflower tool

8.6. Other behaviours of concern:  The treating team are responsible for developing a comprehensive management plan for patients requiring repeated Code Greys and demonstrating ongoing/severe behaviours of concern  Consider involvement from CL psychiatry, neuropsychology, RALS and a team meeting to ensure that an adequate plan is put in place to support behaviour  Referral to CL psychiatry and/or Addiction Medicine may be necessary to provide medication recommendations in support of severe behaviours of concern. It ought to be noted, however, that the Therapeutic Guidelines for the use of Psychotropic medication (2008; Version 6) recommends minimising sedation and antipsychotic medication use as these can increase confusion and reduce alertness during acute neurological states such as PTA. Also refer the Delirium in hospital: Clinical guideline.

RELATED DOCUMENTATION

Code grey, aggressive, violent patient escalation: Implementation tool Delirium in hospital: Clinical guideline Acute behavioural disturbance: Clinical guideline Falls prevention (adults): Procedure

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Assessment and Management of Post-Traumatic Amnesia in Acute Procedure Traumatic Brain Injury (Adults)

BACKGROUND

Traumatic Brain Injury Traumatic Brain Injury (TBI) can arise from an insult to the brain from an external force or direct blow. Most common causes to TBI include motor vehicle accidents, falls, assaults or sporting injuries. The incidence of TBI in Australia is between 107 to 149 per 100,000 people (Australian Institute of Health and Welfare, 1999 & 2008). The peak incidence of TBI occurs in males aged between 16 to 24 years of age (Marshman et al., 2013). The majority (approximately 80%) of TBIs are mild in nature. Moderate to severe TBIs usually require neurosurgical intervention (Marshman et al., 2013). Trauma to the brain can result in diminished or altered state of consciousness and depending on the severity of the injury can cause temporary or persisting impairments in cognitive abilities and/or physical functions (Brain Injury Association of America, 2011; Gordner & Tuel, 1998). Stages of disturbance, and subsequent recovery, following a TBI are characterised as follows; (i) A period of coma with the absence of verbal and voluntary motor responses and absence of spontaneous eye opening (ii) Emergence from coma and a state of altered consciousness termed ‘post-traumatic amnesia’ (iii) Recovery and return to normal consciousness where cognitive, physical/sensory-motor and behavioural functions improve and may return to pre-morbid levels (depending on injury severity) (Katz, Zafonte & Zasler, 2006; Levin, 1979). Recovery after a TBI is most rapid in the first 3-6 months following the insult but depending on the severity of the injury (and other complicating factors) this can continue for several years. Numerous factors influence the recovery process, including the aetiology of the injury, neurophysiological and structural factors, and individual characteristics of the person (Ponsford, Sloan & Snow, 2013). Post-Traumatic Amnesia* Post-Traumatic Amnesia (PTA) is the transitory state between coma and return of full consciousness (Tate et al., 2006). PTA is defined as the period of time following a TBI during which the patient experiences the following:  Disorientation – confusion or loss of information related to a person’s location in time and place and in relation to their personal details  – loss of the capacity to create and store new information or occurring immediately after the brain injury  Retrograde amnesia – loss of previously acquired information or memory of events occurring prior to the brain injury  (Loring, 1999; Marshman et al., 2018; Schacter & Crovitz, 1977).

*The amnesia of PTA arises due to neurological disruption and is not due to any possible psychological trauma that may be associated with the injury event. The duration of PTA is defined as the time following the TBI (including coma period) until resumption of normal and continuous day-to-day memory functions. The interval of PTA can last from a few minutes to many weeks, or even months, depending on the severity of the injury (Levin et al., 1979; Schacter & Crovitz, 1977).

The following lists the potential behavioural manifestations or signs and symptoms of active PTA:

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 Confusion and disorientation: impaired and concentration, impaired memory and reduced recall of information - this can fluctuate over time  Irritability and agitation: Aggression, restlessness, altered sleep patterns, non-compliance with treatment and care  Altered thought processes: Reduced insight and reduced flexibility of thought  Odd beliefs: Beliefs that appear to be delusional/unreasonable, inaccurate memories which may lead to confabulation and fixation  Other behaviour changes: Wandering, inappropriate behaviour or . (Arciniegas et al., 2010; Demery, Hanlon & Bauer, 2001; Johnson, 2001; Weinstein & Lyerly, 1968)

Notes: The Monash Health procedure for assessment and management of TBI symptoms focuses on the anterograde amnesia component of PTA. It must be noted that this is one of the possible acute cognitive disturbances arising from TBI, but not the only one.

Certain factors can complicate the assessment of PTA (refer to point 3 under the Procedure). Additionally, identifying the end point of PTA can also be difficult and complex. In more severe cases of TBI, the end point of PTA cannot readily be determined as symptoms represent persisting, and possible permanent, cognitive deficits as a consequence of the injury. Therefore, coordinated PTA assessment and management is vital in ensuring optimal outcomes for this patient group. A multidisciplinary team approach is key in identifying and managing symptoms of PTA.

THE IMPORTANCE OF ASSESSMENT AND IDENTIFICATION OF PTA Patient Care: Knowing whether a patient is experiencing active PTA is important for guiding appropriate patient care, supervision requirements, length of hospital stay, discharge planning and rehabilitation needs, in addition to ascertaining the likely functional outcomes upon discharge including cognitive prognosis (Marshman et al., 2013)

Predictor of injury severity: Duration of PTA, when measured using objective assessment scales, is a reliable and sensitive predictor of severity of traumatic brain injury. Conversely, subjective reports or a history taken retrospectively, is a less reliable indicator of PTA duration

Impact on rehabilitation outcomes: As patients in PTA have difficulty retaining new information, rehabilitation that relies on explicit memory recall and new learning is not typically undertaken during the acute or active stages of PTA. It is therefore essential to be aware of the presence of active PTA to guide rehabilitation goals and progress

Longer-term impacts: Accurate assessment of PTA assists in identifying whether a mild TBI/ has occurred. Research indicates that TBI patients who receive information, support and advice post-injury demonstrate significantly less cognitive and psychological symptoms, and social morbidity in the longer term (King, Crawford, Wenden, Moss & Wade, 1997; Wade, King, Wenden, Crawford & Caldwell, 1998)

ASSESSMENT SCALES THAT MONITOR FUNCTION AFTER TBI The Glasgow Coma Scale (GCS) is a neurological scale that provides a reliable and objective way of recording the conscious state of the patient. The GCS is a 15-point scale. It estimates and categorises the outcomes of injury to the brain based on a person’s ability to open their eyes and provide motor and verbal responses. A lower GCS score is typically correlated with a more severe neurological injury, and poorer prognosis (Kahn, Zafonte & Zasler, 2003). The GCS measurement alone, does not assess for memory impairment, which is a pivotal

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Assessment and Management of Post-Traumatic Amnesia in Acute Procedure Traumatic Brain Injury (Adults) component of PTA (Meares & Shores, 2017). Therefore, screening measures of PTA have been implemented in clinical practice to address this gap, particularly relevant for mild TBI when the GCS can be normal or return to normal quite quickly.

The Westmead Post Traumatic Amnesia Scale (WPTAS) is the most commonly used adult PTA screening tool within Australia and New Zealand (Marshman et al., 2013). The WPTAS is a 12-item screening scale originally created by Professor Arthur Shores, Neuropsychologist, and colleagues in 1986, and adapted and used in clinical practice in 2009. This is an objective assessment of PTA examining the person’s orientation and ability to consistently remember and retain information from one day to another. The WPTAS, therefore, enables daily prospective evaluation of PTA (Tate, Pfaff & Jurjevic, 2000). This assessment tool is suitable for use with a moderate to severe TBI diagnostic group only, and has been validated for closed head injury, and not penetrating or open head injuries. PTA testing with this measure begins when the patient has regained consciousness and can communicate intelligibly and is conducted DAILY. The patient may be able to communicate via speech, writing, pointing to printed answers or by indicating “yes” or “no” when prompted. PTA may be deemed to be over on the first day of 3 consecutive days of a score of 12/12 on the WPTAS. Obtaining a ‘perfect’ score (12/12) on three consecutive days, ensures that the person has consistently maintained adequate memory function, rather than brief periods of sound memory followed by further confusion or amnesia. However, this criteria must not be used as a hard-and-fast rule, and scores must not be interpreted as an absolute, with clinical judgement required in every case.

The Abbreviated Westmead Post Traumatic Amnesia Scale (A-WPTAS) was created by Shores and Lammel in 2007 as a way of measuring length of PTA during the acute stage of a mild TBI within 24 hours of the initial injury. The A-WPTAS is an extension of the GCS and is based on the original WPTAS, but patients are tested in HOURLY intervals instead of daily intervals. It was designed to prevent mild TBI patients remaining in hospital for observation for unnecessary periods of time. Research from Shores and colleagues suggests that up to 4 hours of observation of a person with mild TBI is sufficient to determine if discharge is safe. It is now mandatory in NSW for all EDs to use to the A-WPTAS in suspected mild TBIs (NSW Ministry of Health, 2011). Research from Liverpool Hospital, NSW (Level 1 Trauma centre) found that 94% of patients who were administered the A- WPTAS were cleared of PTA within 4 hours of presentation and this reduced length of stay by 295 bed-days (Watson et al., 2017). It is also essential to provide patients who have sustained a mild TBI with education, both verbal and written, regarding discharge advice and how to assist with recovery. Refer to: Mild traumatic brain Injury: Information for patients, families and carers.

The A-WPTAS encompasses the regular neurological observations of the GCS assessment, with the addition of three pictures for the patient to learn and remember (testing memory recall). Only use the A-WPTAS for those with a GCS between 13 and 15 (but the patient must obtain E4 & M6 on the GCS). The A-WPTAS is therefore not suitable for those with a suboptimal motor score (i.e. score of less than 6) and reduced eye responses (i.e. score of less than 4) on the corresponding sections of the GCS. It is also not suitable for those with a GCS verbal component score of 2 or below. Such suboptimal scores would be suggestive of a more severe TBI, and A-WPTAS is not indicated in these cases. If the patient obtains a score of less than 13, use the WPTAS upon admission to a ward. The patient is deemed ‘out of PTA’ when they obtain a score of 18/18 on the A-WTPAS. No additional or repeated administrations are required after a perfect score (18/18) has been obtained. If the patient fails to score 18 on

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Assessment and Management of Post-Traumatic Amnesia in Acute Procedure Traumatic Brain Injury (Adults) four testing occasions within 24 hours of the injury, they must be commenced on the standard WPTAS for more detailed PTA evaluation Testing considerations The A-WPTAS and WPTAS are not the only screening measures of PTA, but are extensively validated and used nationally and internationally. Both the WPTAS and A-WPTAS must be administered by appropriately trained staff, such as occupational therapists, speech pathologists, neuropsychologists, nursing staff or medical practitioners. Surgical intervention does not necessarily contraindicate the use of these PTA scales. PTA screening can also be used in intoxicated individuals as long as they are cooperative and GCS requirements have been met for each test. These measures can be used with an interpreter (Meares & Shores, 2017). Refer to Monash Health EMR to view these tests: The WPTAS is a PowerForm in EMR, and the A-WPTAS is in the Interactive View of EMR. KEY STANDARDS, GUIDELINES OR LEGISLATION

Key standards, guidelines and legislations to comply with:  Monash Health workplace safety, emergency and wellbeing  Monash Health occupational violence and aggression  Monash Health preventing falls and harm from falls  Monash Health clinical handover  Monash Health iCare  National Safety and Quality Health Services (NSQHS)

REFERENCES

Arciniega, D.A., Frey, K.L., Newman, J., & Wortzel, H.S. (2010). Evaluation and management of posttraumatic cognitive impairments. Psychiatry Annals, 40(11): 540-552. Brain Injury Association of America (6th February 2011). BIAA Adopts new TBI definition. Carroll, L.J., Cassidy, J.D., Holm, L., Kraus, J., & Coronado, V.G. (2004). Methodological issues and research recommendations for mild traumatic brain injury: The WHO Collaborating Centre Task Force on mild traumatic brain injury. Journal of Rehabilitation Medicine, Suppl. 43: p. 113-125. Demery, J.A., Hanlon, R.E., & Bauer, R.M (2001). Profound amnesia and confabulation following traumatic brain injury. Neurocase, 7(4): 295-302. Fortune, N., & Wen, X. The definition, incidence and prevalence of acquired brain injury in Australia. (1999) Australian Institute of Health and Welfare Canberra; Cat. No. DIS 15: 141. Giza., C.C., & Hovda, D.A. (2004). The pathophysiology of traumatic brain injury. In: Lovell, M.R., Echemendia, R.J., Barth, J.T., Collins, M.W. (eds.), Traumatic Brain Injury in Sports: An International Neuropsychological Perspective p. 45–70, Lisse: Swets & Zeitlinger. Gordner, RL., & Tuel, SM. (Ed.).(1998) Rehabilitation of persons with traumatic brain injury. Bethesda: National Library of Medicine. Guidelines for the NSW Compulsory Third Party Scheme and Lifetime Care and Support Scheme (2013). NSW Government State Insurance Regulatory Authority. Helps., Y., Henley, G., & Harrison, J. (2008). Hospital separations due to traumatic brain injury, Australia 2004-05. Australian Institute of Health and Welfare Canberra; Cat. No. INJCAT 116: 128.

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Jacobs, DG., Jacobs, DO., Kudsk, KA., Moore, FA., Oswanski, MF., Poole, GV., Sacks, G., Scherer, LR., & Sinclair, KE. (2004). Practice management guidelines for nutritional support of the trauma patient. Journal of Trauma, 57: 660-679. Johnson, M. (2001). Assessing confused patients. Journal of , Neurosurgery and Psychiatry, 71(suppl. I): i7- i12. Katz, D. I., Zafonte, R. D., & Zasler, N. D. (2006). Brain injury medicine: Principles and practice. Demos Medical Publishing. King, NS., Crawford, S., Wenden, FJ., Moss, NE., & Wade, DT. (1997). Interventions and service needs following mild and moderate head injury: the Oxford Head Injury Service. Clinical Rehabilitation, 11(1): 13-27. Khan, F., Baguley, I. J., & Cameron, I. D. (2003). Rehabilitation after traumatic brain injury. Medical Journal of Australia, 178(6), 290-297. Levin, HS., O’Donnell, VM., & Grossman, RG. (1979). The Galveston Orientation and Amnesia Test: a practical scale to assess cognition after head injury. Journal of Nervous and Mental Disorders, 167(11): 675-684. Loring, D. (1999). INS Dictionary of Neuropsychology. Oxford University Press. Malec JF, Brown AW, Leibson CL, Flaada JT, Mandrekar JN, et al. (2007) The Mayo Classification System for Traumatic Brain Injury Severity. Journal of Neurotrauma, 9: 1417-1424. Marshman, L.A.G., Jakabek, D., Hennessy, M., Quirk, F., & Guazzo, E.P. (2013). Post-traumatic Amnesia. Journal of Clinical Neuroscience, 20: 1475-1481. Meares, S., & Shores, A. (2017). The abbreviated Westmead post-traumatic amnesia scale: A procedure to identify post- traumatic amnesia after mild traumatic brain injury. The Neuropsychologist, 4: 33-40. New South Wales Ministry of Health. (2011). Adult Trauma Clinical Practice Guidelines: Initial Management of Closed Head Injury in Adults. 2nd Edition. McHugh T, Laforce R, Gallagher P, Quinn S, Diggle P, Buchanan L (2006). Natural history of the long-term cognitive, affective, and physical sequelae of a minor traumatic brain injury. Brain and Cognition,60 (2): 209–11 Ontario Neurotrauma Foundation. (2013). Guidelines for Concussion/Mild Traumatic Brain Injury & Persistent Symptoms. 2nd Edition. Ponsford, J., Sloan, S., & Snow, P. (2013). Traumatic brain injury: Rehabilitation for everyday adaptive living. Psychology Press. Shores, E.A., Marossezeky, J.E., Sandanam, J., Batchelor, J. (1986). Preliminary validation of a clinical scale for measuring the duration of post-traumatic amnesia. Medical Journal of Australia, 144: 569-572. Schacter, D. L., & Crovitz, H. F. (1977). Memory function after closed head injury: A review of the quantitative research. Cortex, 13(2), 150-176. Stein S (1996) Classification of head injury. In: Narayan R, Povlishock J, Wilberger J (eds). Neurotrauma. McGraw-Hill. Tate, RL., Perdices, M., Pfaff, A., & Jurjevic, L. (2001). Predicting duration of posttraumatic amnesia (PTA) from early PTA measurements. Journal of Head Trauma Rehabilitation,16(6): 525-542. Tate, RL., Pfaff, A., & Jurjevic, L. (2000). Resolution of disorientation and amnesia during post-traumatic amnesia. Journal of Neurology, Neurosurgery and Psychiatry, 68: 178-185. Tate, R.L., Pfaff, A., Baguley, I.J., Marosszeky, J.E., Gurka, J.A., Hodgkinson, A.E., King, C., Lane-Brown, A.T., & Hanna, J. (2006). A multicentre, randomised trial examining the effect of test procedures measuring emergence from post-traumatic amnesia. Journal of Neurology, Neurosurgery, Psychiatry, 77: 841-849. Teasdale, G., & Jennett, B (1974). Assessment of coma and impaired consciousness. A practical scale. Lancet, 2: 81-84.

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Wade, DT., King, NS., Wenden, FJ., Crawford, S., & Caldwell, FE. (1998). Routine follow-up after head injury: a second randomised controlled trial. Journal of Neurology, Neurosurgery and Psychiatry, 65(2):177-83. Watson, C.E., Clous, E.A., Jaeger, M., D’Amours, S.K. (2017). Introduction of the abbreviated Westmead Post-traumatic amnesia scale and impact on length of stay. Scandinavian Journey of Surgery, 106 (4): 356-360. Weir, N., Doig, EJ., Fleming, JM., Wiemers, A., & Zemljic, C. (2006). Objective and behavioural assessment of the emergence from post-traumatic amnesia (PTA). Brain Injury, 20(9): 927-935. Weinstein, E.A, & Lyerly, O.G. (1968). Confabulation following brain injury. Archives of General Psychiatry, 18(3): 348- 354. Ylvisaker, M., Turkstra, L., Coehlo, C., Yorkston, K., Kennedy, M., Sohlberg, MM., & Avery, J. (2007).Behavioural interventions for children and adults with behaviour disorders after TBI: a systematic review of the evidence. Brain Injury, 21(8):769-805.

Monash Health wishes to acknowledge the use of protocols from Alfred Health, Austin Health, South West Local Health District, Westmead Hospital, Queensland Health Royal Brisbane & Women’s Hospital, in addition to the authors of the A-WPTAS and WPTAS: Shores et al (1986 & 2007) in the preparation of this procedure. We also acknowledge Professor Arthur Shores, Neuropsychologist (NSW) for ongoing consultation and sharing of resources.

KEYWORDS Post Traumatic Amnesia (PTA), Traumatic Brain Injury (TBI), Closed Head Injury, Concussion, Head Injury, Westmead PTA Scale (WTPAS), Abbreviated Westmead PTA Scale (A-WPTAS), Glasgow Coma Scale (GCS).

Document Governance Supporting Policy Evidence Based Clinical Care: Operational Policy Executive Sponsor Stuart Cavill, Chief Allied Health Officer Neuropsychology Unit, Acute Neuropsychology Service Responsible MMC Occupational Therapy, Neurosciences Dr Niloufar Kirkwood, Senior Neuropsychologist Document Author Danielle Byrne, Neurosciences Occupational Therapist Consumer Review Yes or No No This Procedure has been endorsed by an EMR Subject There are no Order Set or Quick Reference Guides linked Matter Expert (SME)

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A-WPTAS TARGET PICTURES:

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A-WPTAS PICTURE RECOGNITION CHART Only to be used if the patient says “I don’t know” or “I don’t remember.” Do not use if incorrect response provided in the first instance when testing recall.

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