Monitoring long-term vegetation condition dynamics in persistent semi-arid wetland communities using time series of Landsat data

Wetlands in arid and semi-arid regions are characterized by dry- and wet-phase vegetation expression which responds to variable water resources. Monitoring condition trends in these wetlands is challenging because transitions may be rapid and short-lived, and identification of meaningful condition change requires longitudinal study. Remotely-sensed data provide cost effective, multi-decadal information with sufficient temporal and spatial scale to explore wetland condition. In this study, we used a time series of Enhanced Vegetation Index (EVI) derived from 34 years (1988-2021) of Landsat imagery, to investigate the long-term condition dynamics of six broad vegetation groups (communities) in a large floodplain wetland system, the Macquarie Marshes in Australia. These communities were persistently mapped as River Red Gum wetland, Black Box/Coolibah woodland, Lignum shrubland, Semi-permanent wetland, Terrestrial grassland and Terrestrial woodland. We used generalized additive models (GAM) to explore the response of vegetation to seasonality, river flow and climatic conditions. We found that EVI was a useful metric to monitor both wetland condition and response to climatic and hydrological drivers. Wetland communities were particularly responsive to river flow and seasonality, while terrestrial communities were responsive to climate and seasonality. Our results indicate asymptotic condition responses, and therefore evidence of hydrological thresholds, by some wetland communities to river flows. We did not observe a long-term trend of declining condition although an apparent increase in condition variability towards the end of the time series requires continued monitoring. Our remotely-sensed, landscape-scale monitoring approach merits further ground validation. We discuss how it can be used to provide a management tool which continuously assesses short and long-term wetland condition and informs conservation decisions about water management for environmental flows.

Impact of test methodology on the efficacy of triethylene glycol (Grignard Pure) against bacteriophage MS2

The COVID-19 pandemic has raised interest in using chemical air treatments as part of a strategy to reduce the risk of disease transmission, but more information is needed to characterize their efficacy at scales translatable to applied settings and to develop standardized test methods for characterizing the performance of these products. Grignard Pure, a triethylene glycol (TEG) active ingredient air treatment, was evaluated using two different test protocols in a large bioaerosol test chamber and observed to inactivate bacteriophage MS2 in air (up to 99.9% at 90 min) and on surfaces (up to 99% at 90 min) at a concentration of approximately 1.2 - 1.5 mg/m3. Introducing bioaerosol into a TEG-charged chamber led to overall greater reductions compared to when TEG was introduced into a bioaerosol-charged chamber, although the differences in efficacy against airborne MS2 were only significant in the first 15 min. Time-matched control conditions (no TEG present) and replicate tests for each condition were essential for characterizing treatment efficacy. These findings suggest that chemical air treatments could be effective in reducing the air and surface concentrations of infectious pathogens in occupied spaces, although standard methods are needed for evaluating their efficacy and comparing results across studies. The potential health impacts of chronic exposure to chemicals should also be considered, but those were not evaluated here.

Large-scale evaluation of microorganism inactivation by bipolar ionization and photocatalytic devices

The COVID-19 pandemic has raised awareness in the spread of disease via airborne transmission. As a result, there has been increasing interest in technologies that claim to reduce concentrations of airborne pathogens in indoor environments. The efficacy of many of these emerging technologies is not fully understood, and the testing that has been done is often conducted at a small scale and not representative of applied settings. There is currently no standard test method for evaluating air treatment technologies, making it difficult to compare results across studies or technology types. Here, a consistent testing approach in an operational-scale test chamber with a mock recirculating heating, ventilation, and air conditioning (HVAC) system was used to evaluate the efficacy of bipolar ionization and photocatalytic devices against the non-enveloped bacteriophage MS2 in the air and on surfaces. Statistically significant differences between replicate sets of technology tests and control tests (without technologies active) are apparent after 1 h, ranging to a maximum of 0.88 log₁₀ reduction for the bipolar ionization tests and 1.8 log₁₀ reduction for the photocatalytic device tests. It should be noted that ozone concentrations were elevated above background concentrations in the test chamber during the photocatalytic device testing. No significant differences were observed between control and technology tests in terms of the amount of MS2 deposited or inactivated on surfaces during testing. A standardized, large-scale testing approach, with replicate testing and time-matched control conditions, is necessary for contextualizing laboratory efficacy results, translating them to real-world conditions, and for facilitating technology comparisons.

Resectability of bilobar liver tumours after simultaneous portal and hepatic vein embolization versus portal vein embolization alone: meta-analysis

BACKGROUND

Many patients with bi-lobar liver tumours are not eligible for liver resection due to an insufficient future liver remnant (FLR). To reduce the risk of posthepatectomy liver failure and the primary cause of death, regenerative procedures intent to increase the FLR before surgery. The aim of this systematic review is to provide an overview of the available literature and outcomes on the effectiveness of simultaneous portal and hepatic vein embolization (PVE/HVE) versus portal vein embolization (PVE) alone.

METHODS

A systematic literature search was conducted in PubMed, Web of Science, and Embase up to September 2022. The primary outcome was resectability and the secondary outcome was the FLR volume increase.

RESULTS

Eight studies comparing PVE/HVE with PVE and six retrospective PVE/HVE case series were included. Pooled resectability within the comparative studies was 75 per cent in the PVE group (n = 252) versus 87 per cent in the PVE/HVE group (n = 166, OR 1.92 (95% c.i., 1.13-3.25)) favouring PVE/HVE (P = 0.015). After PVE, FLR hypertrophy between 12 per cent and 48 per cent (after a median of 21-30 days) was observed, whereas growth between 36 per cent and 67 per cent was reported after PVE/HVE (after a median of 17-31 days). In the comparative studies, 90-day primary cause of death was similar between groups (2.5 per cent after PVE versus 2.2 per cent after PVE/HVE), but a higher 90-day primary cause of death was reported in single-arm PVE/HVE cohort studies (6.9 per cent, 12 of 175 patients).

CONCLUSION

Based on moderate/weak evidence, PVE/HVE seems to increase resectability of bi-lobar liver tumours with a comparable safety profile. Additionally, PVE/HVE resulted in faster and more pronounced hypertrophy compared with PVE alone.

153 AN EVALUATION OF OLDER PERSONS WITH VESTIBULAR DYSFUNCTION AS IDENTIFIED DURING COMPREHENSIVE GERIATRIC ASSESSMENT

Background

Vestibular dysfunction accounts for 25% of dizziness complaints. In 30-50% of these cases, dizziness is attributed to Benign Paroxysmal Positional Vertigo (BPPV). Thirty percent of people will experience vestibular dysfunction in their lifetime, with likelihood increasing with age. Individuals with vestibular dysfunction are eight times more likely to experience a fall. Vestibular assessment and rehabilitation services can be difficult to access.

Methods

A Plan, Do, Study, Act (PDSA) cycle was undertaken. All referrals to the Older Persons’ Services Clinics from November 2021 to May 2022 were triaged by an Integrated Care Team for the Older Person and scheduled for Comprehensive Geriatric Assessment (CGA). In the course of CGA, patients who reported symptoms suggestive of vestibular dysfunction received assessment by a Physiotherapist with vestibular expertise. Results were entered on an Excel spreadsheet and analysed using descriptive statistics.

Results

Six patients (4 female, 2 male) received vestibular assessment and treatment. Mean age was 75 years (SD: 11) with median Clinical Frailty Score of 4 (vulnerable). Reported symptoms were dizziness (n=3) and spinning (n=3). Sixteen percent (n=1) reported a fall and 66% (n=4) reported fear of falling. All patients had symptom duration of >2 years. Following vestibular assessment, the following diagnoses were made; right posterior canal BPPV, (n=2), vestibular migraine (n=2), right horizontal canal canalithiasis BPPV, with secondary diagnosis of persistent postural-perceptual dizziness (n=1) and left peripheral vestibular hypofunction due to vestibular neuronitis (n=1). The mean number of Physiotherapy visits per person was 4. Three patients reported full resolution of symptoms. The remaining 3 reported an improvement in symptoms and confidence to self-manage.

Conclusion

This small cohort of older persons with chronic vestibular dysfunction benefited from vestibular diagnosis and intervention. The next step of the process is to include specific vestibular screening questions into CGA. This will enable Integrated Care Team members to screen more specifically for vestibular dysfunction.

309 A FRAILTY CENSUS OF INPATIENTS AGED 65 AND OVER ADMITTED TO A MODEL 4 HOSPITAL

Background

Frailty is a risk factor for in-hospital mortality, long hospital stay and functional decline at discharge. Profiling the prevalence and level of frailty within the acute hospital setting is vital to ensure evidence-based practice and service development within the construct of frailty.

Methods

All patients aged ≥65 years and admitted to a medical or surgical inpatient setting, were screened over a 12-hour period (08:00-20:00) using validated frailty and co-morbidity scales. Age and Gender Demographics, Clinical Frailty Scale (CFS), Charlson Co-morbidity Index (CHI) and admitting specialty (Medical/Surgical) were collected. The data was fully anonymised and ethical approval was granted. Descriptive statistics were used to profile the cohort and Chi-squared tests applied for comparisons.

Results

Within a sample of 413 patients, 291(70%) were ≥65yrs. Of this cohort, 202(70%) were ≥75yrs. 207(71%) utilised in-patient medical services and 121(41%) surgical services while 37(12%) used both. The mean CFS was 6 indicating moderate frailty levels and the mean CCI score was 4 denoting moderate co-morbidity. Overall: 195(67%) had moderate-severe frailty (CSF ≥6) while 218 (75%) had moderate-severe co-morbidity (CCI Mod 3-4, Severe ≥5). Associations with age >75 and frailty (p=0.001) and medical service usage and frailty (p=0.004) were established. No significant differences were observed across genders for CFS (p=0.110) and CCI (p=0.465).

Conclusion

There is a high prevalence of frailty and co-morbidity within the admitted patient cohort ≥65yrs. Overcrowding across the hospital system and higher levels of frailty and comorbidity will contribute to increased lengths of stay and the need for specialist intervention, particularly for those ≥75yrs who represented 70% of patients screened. With an increased focus on the integration of care for older adults across care transitions, there is a clear need for expansion of frailty-based services and staff training in frailty care across the hospital and community setting.

304 IMPLEMENTING A FRAILTY SPECIFIC PHARMACY PRIORITISATION TOOLKIT IN AN OLDER PERSONS’ REHABILITATION UNIT

Background

Standardised identification of patients for medication review using nurse-delivered, frailty-specific pharmacy prioritisation toolkits should maximise effective use of limited pharmacy resources. A frailty-specific pharmacy prioritisation toolkit was introduced in a 21 bed older persons’ rehabilitation unit to standardise pharmacy referrals and categorise the interventions made.

Methods

The frailty-specific pharmacy prioritisation toolkit was applied to consecutive patients by upskilled rehabilitation nurses to identify patients for weekly senior pharmacist review over a 5-month period from 18th Jan 2022 to 24th May 2022. Regular use of high-risk medication, greater than 10 medications, patients with specific pharmaceutical concerns such as a desire to reduce their medication burden, acute or chronic kidney injury and admission potentially related to medications or admission with non-mechanical falls are included in this toolkit. Pharmacist interventions included recommendations on medications to be weaned or stopped, dose-adjusted, started or restarted and identification of prescribing errors. Age, gender and interventions were recorded onto Excel and data was analysed using descriptive statistics.

Results

The total number of patients screened was 82. Eighty five percent (n=70) fulfilled criteria for a medication review. Mean age (SD) was 77(10.9) years. Female:male ratio was 1.5:1. Review was completed in 50% (n=35) of these cases. In total there were 228 interventions, with a mean (SD) of 6.5 (2.4) per patient. Eighty-four recommendations were made to wean or stop medication and thirty to dose adjust, of which 60% (n=18) were proton pump inhibitor dose reduction. Thirty-eight were to start or restart a medication, 34% (n=13) of which were for bone protection. Eleven prescribing errors were identified.

Conclusion

The pharmacy prioritisation toolkit applied by existing rehabilitation nurses successfully identified patients for medication review. The review rate reflects a need for a twice-weekly senior pharmacy resource.

321 UNMET NEEDS AFTER STROKE

Background

Unmet needs, such as lack of access to rehabilitation, support and information, are experienced by a high proportion of stroke survivors after discharge from acute and rehabilitation services. The UK guidelines on stroke (2016) recommend that all patients should be offered a structured health and social care review at 6 months post-stroke. However, no such clinics exist to date in Ireland. We aimed to explore the extent of unmet needs in the catchment area of a large teaching hospital.

Methods

A random selection of patients 6-months post-stroke were contacted by telephone and unmet needs were assessed using a validated tool, Post-Stroke Checklist. Following analysis of data, the need for a pilot clinic was identified. A separate random selection of patients discharged from acute services 6 months previously were invited to attend a review clinic. Patients were assessed using an adapted version of the Greater Manchester Stroke Assessment Tool. Assessments were conducted jointly by a physiotherapist and a speech and language therapist, and appropriate onward referrals were made.

Results

Telephone clinic: 51 patients completed the checklist. The most prevalent symptoms reported were fatigue (75%), reduced participation in hobbies and activities, decline in cognition (61%) and mobility problems (59%). Review clinic: 21 patients attended. The most prevalent symptoms reported were reduced memory/concentration (71%), low mood (71%), unintentional weight loss/gain (62%), and reduced mobility (43%). Onward referrals were made for in 16/21 (76%) cases; physiotherapy (n=12), occupational therapy (n=7), speech and language therapy (n=7), clinical nutrition (n=5), social work (n=7), psychology (n=5).

Conclusion

Data from this exploratory study supports previous research indicating a high number of stroke survivors with unmet needs. This highlights the importance of establishing post-acute stroke review clinics and pathways in the Irish setting.

233 COGNITIVE OUTCOMES AFTER A FIRST EPISODE OF DELIRIUM IN HOSPITAL – RESULTS FROM AN ADVANCED NURSE PRACTITIONER DELIRIUM CLINIC

Background

Cognitive outcomes for frail older adult inpatients with a first episode of Delirium are unknown. Aim: To determine cognitive outcomes of frail older inpatients after a first episode of Delirium.

Methods

Consecutive frail older inpatients with a 4AT score >/= 4, without a previous history of cognitive impairment, over a 12-month period (January to December 2021) were invited for formal cognitive assessment 8-12 weeks after their delirium occurred. Collateral history, medication review, Addenbrookes (ACE III), bloods and CT brain were undertaken. Data was prospectively entered onto Excel and analysed using descriptive statistics.

Results

Fifty-one patients with a mean age of 82 years (SD=6) were referred to the Advanced Nurse Practitioner (ANP) Delirium Clinic. Median Clinical Frailty Score (CFS) was 6 with a male: female ratio of 1:2. Forty- seven percent (n=24) attended; 35 % (n-18) did not attend; 18 % (n=9) died prior to assessment. The ratio of male to female attendees was 1: 2.4. There was no difference in CFS or age between attenders and non-attenders. Thirty-three percent (n=8) of patients who attended had potentially reversible causes (high anti-cholinergic burden, folate deficiency, sleep disorder) of cognitive impairment requiring intervention. Sixty-seven percent (n=16) were diagnosed with dementia at the Delirium Clinic; 16.6% (n=4) were diagnosed with Mild Cognitive Impairment; 4% (n=1) had a resolved delirium; 8% (n=2) were referred to consultant Memory Clinic and one patient remained too unwell to assess. The median ACE III score of patients diagnosed with dementia was 54/100 (SD = 18).

Conclusion

Pro-active follow up of patients with a first episode of Delirium led to early diagnosis of dementia and mild cognitive impairment with supportive interventions. Earlier ANP intervention, during the acute phase of delirium, has been introduced in order to improve clinic attendance.

330 RISK OF MALNUTRITION AND ITS ASSOCIATION WITH FRAILTY-ASSOCIATED FACTORS IN THE OLDER PERSON

Background

The aetiology of malnutrition is multifactorial, with age a facilitating factor. It is associated with poorer physical and mental health and functional ability in frail older persons. Nutritional screening is a key domain in Comprehensive Geriatric Assessment (CGA). This study assessed the relationship between malnutrition risk and other drivers of frailty in the older person by CGA.

Methods

All patients who had a CGA completed by an Integrated Care Team for Older Persons from March 2020 to July 2021 inclusive were studied. Data was entered onto an Excel database by a trained administrator. The variables included were: age, gender, swallow screen, living alone, cognition, loneliness, Clinical Frailty Scale (CFS) score, falls history and risk of malnutrition using the Malnutrition-Screening Tool (MST). Odds ratio (OR), 95% Confidence Intervals (CI) was used to determine if there was an association between malnutrition risk and each variable in the total group.

Results

In total, 567 patients (325 female, 242 male), mean age 82yrs (SD =19), with median CFS of 6 were studied. Sixty-eight percent (n=384) reported a fall, 37.2% (n=211) had a positive swallow screen, 44% (n=251) lived alone, 35% (n=198) had positive cognitive screening, 14% (n=80) reported loneliness and 31.6% (n=179) were identified as at risk of malnutrition. A positive association was identified between risk of malnutrition and cognitive impairment (OR 1.9, 95%CI 1.2-3.1) and a reported fall (OR 2.2, 95%CI 1.4-3.5). In the population who had a fall and risk of malnutrition, the association remained in those aged ≥80yrs (OR 2.6, 95% CI 1.46 – 4.5) and female (OR 3.6, 95%CI 1.7 – 7.4).

Conclusion

The risk of malnutrition is associated with falls risk and cognitive impairment in frail older persons. Frail older persons identified by integrated care team for older persons with falls risk & cognitive impairment will be targeted for specialist dietetic intervention.

Dragon 1 Protocol Manuscript: Training, Accreditation, Implementation and Safety Evaluation of Portal and Hepatic Vein Embolization (PVE/HVE) to Accelerate Future Liver Remnant (FLR) Hypertrophy

STUDY PURPOSE

The DRAGON 1 trial aims to assess training, implementation, safety and feasibility of combined portal- and hepatic-vein embolization (PVE/HVE) to accelerate future liver remnant (FLR) hypertrophy in patients with borderline resectable colorectal cancer liver metastases.

METHODS

The DRAGON 1 trial is a worldwide multicenter prospective single arm trial. The primary endpoint is a composite of the safety of PVE/HVE, 90-day mortality, and one year accrual monitoring of each participating center. Secondary endpoints include: feasibility of resection, the used PVE and HVE techniques, FLR-hypertrophy, liver function (subset of centers), overall survival, and disease-free survival. All complications after the PVE/HVE procedure are documented. Liver volumes will be measured at week 1 and if applicable at week 3 and 6 after PVE/HVE and follow-up visits will be held at 1, 3, 6, and 12 months after the resection.

RESULTS

Not applicable.

CONCLUSION

DRAGON 1 is a prospective trial to assess the safety and feasibility of PVE/HVE. Participating study centers will be trained, and procedures standardized using Work Instructions (WI) to prepare for the DRAGON 2 randomized controlled trial. Outcomes should reveal the accrual potential of centers, safety profile of combined PVE/HVE and the effect of FLR-hypertrophy induction by PVE/HVE in patients with CRLM and a small FLR.

TRIAL REGISTRATION

Clinicaltrials.gov: NCT04272931 (February 17, 2020). Toestingonline.nl: NL71535.068.19 (September 20, 2019).

Epidemiology and impact of frailty in patients with atrial fibrillation in Europe

BACKGROUND

Frailty is a medical syndrome characterised by reduced physiological reserve and increased vulnerability to stressors. Data regarding the relationship between frailty and atrial fibrillation (AF) are still inconsistent.

OBJECTIVES

We aim to perform a comprehensive evaluation of frailty in a large European cohort of AF patients.

METHODS

A 40-item frailty index (FI) was built according to the accumulation of deficits model in the AF patients enrolled in the ESC-EHRA EORP-AF General Long-Term Registry. Association of baseline characteristics, clinical management, quality of life, healthcare resources use and risk of outcomes with frailty was examined.

RESULTS

Among 10,177 patients [mean age (standard deviation) 69.0 (11.4) years, 4,103 (40.3%) females], 6,066 (59.6%) were pre-frail and 2,172 (21.3%) were frail, whereas only 1,939 (19.1%) were considered robust. Baseline thromboembolic and bleeding risks were independently associated with increasing FI. Frail patients with AF were less likely to be treated with oral anticoagulants (OACs) (odds ratio 0.70, 95% confidence interval 0.55-0.89), especially with non-vitamin K antagonist OACs and managed with a rhythm control strategy, compared with robust patients. Increasing frailty was associated with a higher risk for all outcomes examined, with a non-linear exponential relationship. The use of OAC was associated with a lower risk of outcomes, except in patients with very/extremely high frailty.

CONCLUSIONS

In this large cohort of AF patients, there was a high burden of frailty, influencing clinical management and risk of adverse outcomes. The clinical benefit of OAC is maintained in patients with high frailty, but not in very high/extremely frail ones.

A digital therapeutic for management of psychosocial aspects of psoriasis: A pre‐post proof of concept study

Background

Despite the psychosocial challenges of living with psoriasis many patients may not be able to access appropriate services to manage these challenges. Mobile health interventions may be helpful as a means to support patients in managing the impact of their condition.

Objective

To conduct a preliminary examination of the feasibility and acceptability of a bespoke psoriasis‐specific digital therapeutic solution (hereafter termed Allay), and to provide initial data on psychological changes pre‐post.

Methods

Phase one proof of concept pre‐post study. Eligible patients were provided with Allay on their smartphone and assessed at baseline and at 12 weeks on a range of indices of well‐being. Participants experiences on usability were collected by telephone interview at 4 weeks, 8 and 12 weeks.

Results

Out of 66 participants recruited, 59 persisted in using Allay after the familiarisation phase, and 34 participants completed the 12 weeks programme. Participants showed a statistically significant improvement between induction and the end of the 12 weeks programme on Quality of life, Resilience, Perceptions of ‘Overall impact’ of psoriasis, and ‘Emotional impact’. There was a significant change over the course of using Allay for symptoms of depression but not anxiety. While there was an interaction effect of changes in severity of psoriasis symptoms over the course of the study for dermatology‐specific measures, there was no interaction between such changes in psoriasis symptoms and changes in depression, resilience or beliefs in emotional impact.

Conclusions

Study results suggest that the use of Allay as an adjunct to medical management of psoriasis may help patients improve resilience, mood, beliefs about their condition and enhance their quality of life. Given that this is a phase one proof of concept study, and our rates of attrition further research is necessary to examine comparative effectiveness and stability of these findings.

Inactivation of MS2 bacteriophage on copper film deployed in high touch areas of a public transport system

Although SARS-CoV-2 is primarily an airborne risk, the COVID-19 pandemic also highlighted the need for self-disinfection surfaces that could withstand the demand of high occupant densities characteristic of public transportation systems. The aim of this study was to evaluate the durability and antiviral activity of a copper film deployed for 90 days in two high touch locations within an active metropolitan bus and railcar. The antiviral efficacy of this copper film after being deployed in transit vehicles for 90 days (deployed copper film) was then compared to new (unused) copper film to determine if frequent touches and cleaning protocols could decrease the efficacy of the copper films. Deployed copper film, new copper film, and aluminium foil (positive control) coupons were inoculated with ~1 × 10⁶ MS2 virus particles, allowed a contact time of either 5- or 10-min, and analysed for residual viral infectiousness. On both new and deployed copper films, MS2 was completely inactivated (≥5 log reduction) at both time points. These results suggest that the copper film may provide the durability demanded by high touch public spaces while maintaining the antiviral activity necessary to reduce exposure risk and viral transmission via surfaces in public transportation settings.

The Emirates Mars Mission

The Emirates Mars Mission (EMM) was launched to Mars in the summer of 2020, and is the first interplanetary spacecraft mission undertaken by the United Arab Emirates (UAE). The mission has multiple programmatic and scientific objectives, including the return of scientifically useful information about Mars. Three science instruments on the mission's Hope Probe will make global remote sensing measurements of the Martian atmosphere from a large low-inclination orbit that will advance our understanding of atmospheric variability on daily and seasonal timescales, as well as vertical atmospheric transport and escape. The mission was conceived and developed rapidly starting in 2014, and had aggressive schedule and cost constraints that drove the design and implementation of a new spacecraft bus. A team of Emirati and American engineers worked across two continents to complete a fully functional and tested spacecraft and bring it to the launchpad in the middle of a global pandemic. EMM is being operated from the UAE and the United States (U.S.), and will make its data freely available.

Transitions for older people with learning disabilities and behaviours that challenge others, and their family carers: a merged protocol for two rapid scoping reviews of evidence

BACKGROUND

There are over 1 million adults with a learning disability in the UK, of whom approximately 20% displaying behaviours that challenge others. Two thirds of people with learning disabilities live in the family home. As they and their family carers age, both are likely to face particular difficulties and stresses, but there is little understanding of their experiences and needs. To address this evidence gap, our main objective is to undertake two rapid scoping reviews that will collectively focus on the health and social care needs, experiences, service interventions and resources of older people with learning disabilities and behaviours that challenge others, and their family carers. Both reviews will focus on issues relating to forward planning and transitions to different care contexts. The study is part of a research project funded by the National Institute for Health Research No.129491.

METHODS

We propose to address the need for evidence via two rapid scoping reviews. We will include published and unpublished (grey) literature, encompassing empirical research, policy and practice guidance and lay resources to support decision-making. We will search multiple electronic databases, hand search references lists, and use expert guidance to identify potential evidence. The following databases were used for research and grey literature: CINAHL; Healthcare Management Information Consortium (HMIC); NHS Evidence; Scopus; Turning Evidence Into Practice (TRIP); Web of Science (WoS); Google (first 5 pages); and Google Scholar (first 5 pages). For RR2, additional intended databases are the Carer Research Knowledge Exchange Network (CAREN) and Social Care Institute for Excellence (SCIE). Two reviewers will independently screen all citations and full-text articles for inclusion. One reviewer will extract data, with an independent review undertaken by the research team. Critical appraisal will depend on the nature of included evidence. Narrative synthesis will be collaboratively developed, with descriptive information presented in tables summarising study characteristics and thematic analysis of findings presented in the main text. Dissemination will be through journal publication, conference presentations and written short-form, easy-read versions of articles and audio-video clips for lay audiences.

DISCUSSION

We will consider the strengths and limitations of our reviews, considering their impact on findings. We will summarise the main findings and provide an interpretation linked to the review questions and objectives. We will consider the implications of our findings for policy and practice, as well as future research addressing the support of older people with learning difficulties and behaviours that challenge others, and their family carers, in the context of transition to different care contexts in the UK. The protocol has been registered as Vseteckova, J., Jordan, J., Tilley, E., Larkin, M., Ryan, S., and Wallace, L. (2021, December 4). Transitions for older people with learning disabilities and behaviours that challenge others, and their family carers: a merged protocol for two rapid scoping reviews of evidence. Retrieved from osf.io/jzrn9.

The influence of experimental confederate peers on children's food intake: A systematic review and meta-analysis

Confederates influence eating behaviour. Systematic reviews and meta-analyses have been conducted on this topic, however, the majority have examined adults, or a combination of adults and children, therefore, an up-to-date meta-analysis is needed to examine the impact of confederate peers on children's food intake. We systematically reviewed and meta-analysed the influence of confederate peers on children's food intake in research using present and remote-confederates. Six publications summarising findings from seven studies were included in this review. One publication was excluded from the meta-analysis because it was not possible to extract the required data. The meta-analysis showed that children were influenced by confederate peers; eating more when exposed to a high-intake compared to a no or low-intake confederate. Larger effects were observed when children were exposed to a remote-than a present-confederate, and for studies using healthy snacks compared to high fat high sugar (HFHS) snacks. No difference in effect size was observed when children were exposed to a high-vs. low-intake confederate compared to a high-vs. no-intake confederate. In the narrative synthesis, confederate intake influenced children's eating behaviour 24-h later, and possible moderators and a potential mechanism underlying the influence of confederates were identified. Caution is needed when interpreting the results, as the sub-groups were not compared statistically due to high heterogeneity, and a small number of studies were included in this review. Furthermore, all studies using the present-confederate design examined HFHS snack intake, therefore, it is unclear whether observed differences in effect sizes between present- and remote-confederates may be due to confederate or food type. Research is needed to further examine the influence of confederate peers on children's food intake and to examine mechanisms and moderators.

124 OUTCOME OF SPEECH AND LANGUAGE THERAPY CLINICAL DYSPHAGIA ASSESSMENT FOLLOWING AN INTERDISCIPLINARY SWALLOW SCREEN

Background

A 7 question non-validated swallow screen (Any reported swallowing difficulties? Any coughing with food or fluids? Any choking? Does food get stuck when eating? Any recurrent chest infections? Any pain when swallowing? Any difficulty swallowing tablets?) is used by an integrated care team for older persons to prioritise referrals to the Speech and Language Therapy (SLT) service.

This study identified the proportion of patients screened who appropriately required a clinical dysphagia assessment and intervention.

Methods

This was a retrospective study from September 2020 to June 2021. Patients were assessed by the Clinical Specialist SLT who determined if swallow impairment was present and whether intervention was required. Age, gender and clinical frailty score were documented. Patients who resided out of the catchment area or who had already received an SLT service were excluded.

Results

The average age was 80 years, range 67–103. The male to female ratio was 2:1 and the average clinical frailty score (CFS) was 5. N = 42(32%) screened positive. N = 29(69%) attended for SLT assessment. N = 27(93.1%) had a swallow impairment identified. N = 20 were discharged following a single intervention and 9 required further SLT intervention.

Conclusion

Presbyphagia is generally asymptomatic and results from age related anatomical and physiological changes, reduced functional reserve and sarcopenia. Older adults compensate for these difficulties and do not seek assistance. Presbyphagia may progress to dysphagia, resulting in adverse outcomes. The high rate of SLT confirmed swallow impairment and need for SLT intervention highlights a need to prospectively refine and validate this 7 question swallow screen.

179 WHAT MATTERS TO THE FRAIL OLDER PERSON CHANGES DURING COVID-19 AND SHOULD INFORM PATIENT CENTRED CHANGE

Background

Methods

Results

Conclusion

233 BISPHOSPHONATES: ANOTHER COMPLEX DRUG TO PRESCRIBE

Background

Bisphosphonates provide effective treatment for osteoporosis. They accumulate a bone reservoir lasting for 3 years and beyond. The 2021 NICE guidelines recommend a medication review and a ‘drug holiday’ after 5 years of oral bisphosphonate therapy for low-fracture risk patients. Continuing treatment for high risk individuals is advised: age=/>75, previous hip or vertebral fracture, one or more fractures during treatment, recent DEXA scan with T score =/<−2.5, and/or current treatment with oral glucocorticoids. This retrospective audit aimed to assess compliance with NICE guidelines in a primary care setting.

Methods

Data were collected using the Health One online medical record system in an urban general practice. Inclusion criteria: all patients =/> 65 years old, prescribed oral bisphosphonate therapy for osteoporosis for >5 years. Exclusion criteria: deceased, did not attend clinic >1 year, patients on bisphosphonate treatment for conditions other than osteoporosis.

Results

137 patients with a history of bisphosphonate therapy were identified. 76 patients were on bisphosphonate treatment for greater than 5 years. Of the 76 patients, 33 were classified as low-fracture risk and appropriately commenced a drug holiday, while 22 correctly remained on bisphosphonates due to a high fracture risk. The remaining 21 patients inappropriately continued therapy without receiving a medication review, repeat DEXA or fracture-risk assessment.

Conclusion

One third of patients on bisphosphonates beyond 5 years were not assessed for a drug holiday. The aim of a bisphosphonate ‘drug holiday’ is to reduce poly-pharmacy and prevent rare but serious long-term adverse events (such as atypical fractures, osteonecrosis of the jaw, gastric cancer and atrial fibrillation). Factors which had an impact on inappropriate prescribing should be assessed. Incorporating computer-based prescribing alerts could support safe prescribing practices.

44 BONE HEALTH AND FRACTURE RISK: KNOWLEDGE, OPINION AND PRACTICE OF PHYSIOTHERAPISTS

Background

Osteoporotic-related fractures are responsible for excess mortality, morbidity, chronic pain, reduction in quality of life, admission to long-term care and health and social care costs (Papaioannou et al, 2010).

Evidence for using Fracture Risk Assessment Tool (FRAX®) based community-screening in older people is increasing (Kanis et al, 2020). There is no published evidence on the use of FRAX® by Physiotherapists.

Methods

A questionnaire was sent to South Eastern Branch members of the Irish Society of Chartered Physiotherapists (ISCP).

Survey themes were: participant characteristics, knowledge and opinion in the areas of Bone Health and Fracture Risk. Responses were downloaded from Survey Monkey and analysed using descriptive statistics.

Results

The response rate was 27% (n = 56). 72% (n = 40) of those surveyed had at least 10 years clinical experience. For 65% (n = 37) of participants, older people made up more than half of their clinical caseload. 96% (n = 54) of participants treated people with frailty and other bone health risk factors; falls (93%), osteoporosis (89%), fracture or reduced mobility (87%).

On a scale of 1–10 (1 = least confident, 10 = most confident) 49% of respondents rated confidence in prescribing Bone Health Physiotherapy interventions at ≤5.

When interpreting results of a DEXA scan; 80% reported confidence to be ≤5.

Half (49%) of participants had never heard of FRAX®.

95% of respondents felt fracture risk was under addressed in clinical practice. All felt it was within their professional responsibility to discuss fracture risk with patients.

Conclusion

This is the first evaluation of bone health and fracture risk knowledge, opinion and practice of physiotherapists. The need for more knowledge of DEXA, FRAX® and bone health was highlighted. The use of FRAX® may improve fracture risk assessment in patients attending Physiotherapy. Based on these results, FRAX® has been introduced into a Rehabilitation Unit by Physiotherapists as part of Quality Improvement Project.

126 A QUALITY INITIATIVE TO IMPROVE THE ASSESSMENT AND RECOMMENDATION FOR TOTAL CALCIUM INTAKE

Background

This study assessed factors affecting adherence to calcium supplementation, estimated total calcium intake and potential to increase dietary calcium in the frail older adult.

Methods

Frail Older Adults who completed a comprehensive geriatric assessment (CGA) between January—June 2021 were included. Those taking calcium supplements were telephoned by a Dietitian. Nursing home residents, hospital inpatients and those unable to complete a telephone questionnaire were excluded. A modified version of the Short Calcium Intake List (SCAIL) was used and potential to improve dietary calcium was assessed (1). Data was analysed using descriptive statistics.

Results

N = 50 patients were taking a calcium supplement. N = 15 were excluded. 26 women and 9 men, aged 70 -96 yrs were included. Dietary intake ranged from 250– 1904 mg. 17% (N = 6) achieved >1,000 mg/day dietary calcium requirements from diet. 66% (N = 23) had potential to increase their dietary calcium. 97% (N = 34) were prescribed a Calcium supplement, ranging from 500– 2000 mg/day. Total Calcium Intake including supplementation ranged from 850 mg—2,737 mg. 82% (N = 29) exceeded their daily requirements.40% (N = 14) reported reduced compliance due to swallowing difficulties; 25%(N = 9) gastrointestinal upset; 11% (N = 4,) taste/consistency and 8% forgetting (N = 3).Dietitian recommendations included 31% (N = 11) to stop supplementation, 34% (N = 12) to reduce, 11% (N = 4) advice on managing concerns relating to supplement and 22% (N = 8) dietary education.

Conclusion

Most older adults did not meet their nutritional requirements for dietary calcium. Over two thirds could reduce or stop supplementation following dietary calcium assessment and advice. A dietary calcium estimator for the older adult, with education can be used to correct calcium intake. This modified SCAIL will be integrated into the CGA as part of a quality improvement initiative for the frail older adult.

Reference

1. Rasch L et al. (2017), Content Validity of a Short Calcium Intake List to Estimate Daily Dietary Calcium intake of Patients with Osteoporosis, Calcified Tissue International, 100(3): 271–277.

Closing the Osteoporotic-Fracture Care Gap for Frail Older Persons

Aim To implement standardised fracture risk assessment in the frail older person. Methods Frail older patients underwent opportunistic screening for fracture risk. Roadblocks to standardised assessment were identified. An Integrated Care Team for older persons (ICT) trained in fracture risk assessment using FRAX. Clinical assessment was via a locally agreed algorithm. Data was entered onto Excel. The SQUIRE guidelines for quality improvement programmes were used to report the results. Results Of 96 patients opportunistically screened, the average age was 84 years. FRAX was completed for 19% (n=18). 89% (n=16) met the pharmacotherapy threshold. Nine were recommended pharmacotherapy. Of sixteen patients recommended for DXA, just 31% (n=5) were booked. Following implementation of a quality improvement project, 100 patients were assessed, and average age was 80 years. FRAX was completed for 62% (n=63) and 95% (n=60) required pharmacotherapy. 24% (n=14) had untreated prior fracture. All had pharmacotherapy prescribed. 59% (n=59) required DXA scanning. 70% (n=41) had DXA ordered. Conclusion ICT ownership increased FRAX assessment 3-fold and point of contact prescribing to 100%.

The role of perceived descriptive and injunctive norms on the self-reported frequency of meat and plant-based meal intake in UK-based adults

Perceived social norms refer to beliefs that people hold about what other people do (descriptive norms) and approve of (injunctive norms), and are associated with food intake. However, less is known about whether perceived social norms are associated with meat and plant-based meal intake. Using a cross-sectional survey design 136 participants (aged 19-66 years, mean age = 39.63, SD = 12.85 years, mean BMI = 25.77, SD = 5.30, 80.9 % female, 77.9 % omnivores, 22.1 % flexitarians) answered questions about how frequently they consumed meat and plant-based meals, and how frequently they perceived people in their social environment to consume (perceived descriptive norms), and approve of consuming (perceived injunctive norms) meat and plant-based meals. Perceived descriptive and injunctive norms were positively associated with participants' frequency of meat intake: participants ate meat more frequently when they perceived their significant other to frequently eat meat (descriptive norm), and when they perceived their significant other and friends to approve of (injunctive norm) frequently eating meat. Perceived descriptive norms were positively associated, but injunctive norms were negatively associated with participants' frequency of plant-based meal intake: participants ate plant-based meals more frequently when they perceived their extended family, friends, and significant other to frequently eat plant-based meals. However, participants ate plant-based meals more frequently when they perceived their extended family to approve of less frequent plant-based meal intake. These results suggest that different social groups may be important for meat and plant-based meal intake, with significant others and friends appearing to be important reference points for both food types. Further research examining the contexts in which the different social groups influence eating behaviour would be of value.

Interventions to optimise medication prescribing and adherence in older people with cancer: A systematic scoping review

Introduction

Older adults with cancer often require multiple medications (polypharmacy) comprising cancer-specific treatments, supportive care medications (e.g. analgesics) and medications for pre-existing conditions. The reported prevalence of polypharmacy in older adults with cancer ranges from 13–92% (1). Increasing numbers of medications pose risks of potentially inappropriate prescribing and medication non-adherence.

Aim

The aim of this scoping review was to provide an overview of evaluations of interventions to optimise medication prescribing and/or adherence in older adults with cancer, with a particular focus on the interventions, study populations and outcome measures that have been assessed in previous evaluations.

Methods

Four databases (PubMed, EMBASE, CINAHL, PsycINFO) were searched from inception to 29th November 2019 using relevant search terms (e.g. cancer, older adults, prescribing, adherence). Eligible studies evaluated interventions seeking to improve medication prescribing and/or adherence in older adults (≥65 years) with an active cancer diagnosis using a comparative evaluation (e.g. inclusion of a control group). All outcomes for studies that met inclusion criteria were included in the review. Two reviewers independently screened relevant abstracts for inclusion and performed data extraction. As a scoping review aims to provide a broad overview of existing literature, formal assessments of methodological quality of included studies were not undertaken. Extracted data were collated using tables and accompanying narrative descriptive summaries. The review was reported in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for scoping reviews (PRISMA-ScR) guidelines (2).

Results

The electronic searches yielded 21,136 citations (Figure 1). Nine studies met inclusion criteria. Included studies consisted of five randomised controlled trials (RCTs), including one cluster RCT, and four before-and-after study designs. Studies were primarily conducted in oncology clinics, ranging from single study sites to 109 oncology clinics. Sample sizes ranged from 33 to 4844 patients. All studies had a sample population with a mean/median age of ≥65 years, however, only two studies focused specifically on older populations. Interventions most commonly involved patient education (n=6), and were delivered by pharmacists or nurses. Five studies referred to the intervention development process and no studies reported any theoretical underpinning. Three studies reported on prescribing-related outcomes and seven studies reported on adherence-related outcomes, using different terminology and a range of assessments. Prescribing-related outcomes comprised assessments of medication appropriateness (using Beers criteria), drug-related problems and drug interactions. Adherence-related outcomes included assessments of self-reported medication adherence and calculation of patients’ medication possession ratio.

Conclusion

The main strength of this scoping review is that it provides a broad overview of the existing literature on interventions aimed at optimising medication prescribing and adherence in older adults with cancer. The review highlights a lack of robust studies specifically targeting this patient population and limited scope to pool outcome data across included studies. Limitations of the review were that searches were restricted to English language publications and no grey literature was searched. Future research should focus specifically on older patients with cancer, and exercise rigour during intervention development, evaluation and reporting in order to generate findings that could inform future practice.

References

1. Maggiore RJ, Gross CP, Hurria A. Polypharmacy in older adults with cancer. The oncologist. 2010;15(5):507–22.

2. Tricco AC, Lillie E, Zarin W, O'Brien KK, Colquhoun H, Levac D, et al. PRISMA Extension for Scoping Reviews (PRISMA-ScR): Checklist and Explanation. Ann Intern Med. 2018;169(7):467–73.

A Smartphone-Smartcard Platform for Implementing Contingency Management in Buprenorphine Maintenance Patients With Concurrent Stimulant Use Disorder

Background and Objectives: Opioid agonist pharmacotherapies are effective in the treatment of opioid use disorder (OUD) but concurrent stimulant use is common and can lead to relapse and treatment drop out. Contingency management in combination with opioid agonist pharmacotherapy has broad beneficial effects in polysubstance users, including promoting drug abstinence and treatment retention, but clinic-based implementation can be burdensome. The present study was conducted to evaluate a contingency management intervention delivered via a smartphone-smartcard platform in OUD patients who had concurrent stimulant use disorder. Methods: Retrospective comparison of (n = 124) patients; half received the contingency management intervention and half were matched controls. Drug use and clinic attendance outcomes over four consecutive 30-day periods were analyzed with regression. Results: The intervention group showed consistently higher rates of drug abstinence and clinic attendance which were significant at the latter two timepoints. Discussion: Smartphone-smartcard platforms can facilitate dissemination of contingency management by surmounting or obviating key barriers to adoption. They appear to be convenient for all stakeholders, are easy to use, and facilitate high-fidelity implementation. Delivering contingency management via a smartphone-smartcard platform produces effects consistent with those observed when the intervention is delivered with substantially costlier and more burdensome in-person procedures.

Superior hypertension control with betablockade in the European Sleep Apnea Database

Background

Arterial hypertension is highly prevalent and frequently difficult to control in patients with obstructive sleep apnea (OSA). High sympathetic activity is a hallmark physiological phenomenon in OSA. We hypothesized that antihypertensive drugs with sympathetic inhibitory properties, in particular beta blockers (BB), may be particularly efficacious in OSA patients.

Methods

Hypertensive OSA patients receiving blood pressure lowing treatment in the European Sleep Apnea Database (ESADA) were analyzed (n=5818, 69% men, age 58±11 years, body mass index 33±7 kg/m2, apnea hypopnea index 34±26 events/h). Antihypertensive medications (BB, diuretic, renin-angiotensin blocker [RAB], calcium channel blocker [CCB], and centrally acting antihypertensive [CAH]) were classified according to ATC code. Office blood pressure was compared in patients with mono- or combination therapy controlling for confounders.

Results

Poorly controlled systolic blood pressure according to the ESC/ESH guidelines was found in 66% of patients. Patients receiving monotherapy with RAB, CCB or CAH had 2.2 [95% CI, 1.4–3.0], 3.0 [1.9–4.1] and 3.0 [1.7–4.7] mmHg higher systolic blood pressure compared with those on BB (adjusted model, p=0.007, 0.008 and 0.017, respectively). In those with a combination of two antihypertensive drugs, systolic blood pressure was 3.3 [2.4–4.3], 2.2 [1.3–4.3] and 2.3 [1.4–3.3] mmHg higher in those on CCB/RAB, diuretic/RAB or BB/RAB compared with those on BB/diuretic (adjusted model, p<0.001, 0.019 and 0.001, respectively).

Conclusions

Uncontrolled blood pressure was common in OSA patients with antihypertensive medication. Patients treated with BB alone or in combination with diuretic was associated with a lower systolic pressure in this large clinical cohort.

Funding Acknowledgement

Type of funding source: Other. Main funding source(s): European Respiratory Society funded Clinical Research Collaboration (2015-2020)

Basal ganglia echogenicity in preterm infants: A case series

BACKGROUND

Damage to the basal ganglia and thalamus (BGT) can be caused by multiple perinatal factors and may be associated with movement disorders, cognitive delay and visual difficulties. Changes in BGT structure, seen as echogenicity on ultrasound, are difficult to objectively quantify. The aetiology, clinical relevance and developmental outcomes of BGT echogenicity are poorly understood. We aimed to gain a better understanding of the natural history of BGT echogenicity in a preterm population.

METHODS

Retrospective review of clinical course, neuroimaging and development in infants born <32weeks gestation over 5 years with evidence of BGT echogenicity.

RESULTS

BGT echogenicity was reported in 18/650 infants (2.7%). Echogenicity appeared at a median of 8 days (2-45 days) and resolved on pre-discharge ultrasound in 50%. Thirteen infants had a term corrected MRI brain with abnormal BGT signal seen in 3 infants (23%). All 3 infants had persisting echogenicity on discharge ultrasound. No infant with echogenicity resolution on ultrasound had changes on term MRI. 14 infants had developmental progress available at 1 year corrected. Abnormal development was reported in four children of whom one had BGT changes on term MRI. Two children with persistent BGT changes but an otherwise normal MRI had reported normal neurodevelopment.

CONCLUSION

BGT echogenicity is relatively common on routine ultrasound and resolves in the majority of infants by term corrected. This review suggests that at term corrected, normal cranial ultrasound may obviate the need for MRI where no other concerns exist. BGT echogenicity did not appear to independently influence neurodevelopment.

COVID-19 recovery: tackling the 2-week wait colorectal pathway backlog by optimising CT colonography utilisation

AIM

To review the indications for computed tomography colonography (CTC) performed on patients referred via the 2-week wait colorectal pathway (2WWCP).

MATERIALS AND METHODS

A retrospective study was performed on all patients referred through the 2WWCP between October 2018 and September 2019. The referrals were audited against the National Institute for Health and Care Excellence (NICE) NG12/DG30 guidelines for referral to the 2WWCP, and against the Royal College of Radiologists (RCR) 2017 guidelines for CTC.

RESULTS

Over the study period, there were 1,707 2WWCP referrals, and 362 (21.2%) of these patients underwent CTC. The median age was 66 years, and 55% were female. Forty-six patients did not meet the NICE NG12/DG30 guidelines for referral to the 2WWCP, and a further 268, although meeting the NICE guidelines, did not meet the RCR 2017 guidelines for CTC. In total, only 13% of CTCs performed complied with both guidelines.

CONCLUSION

This audit demonstrated a significant opportunity to reallocate CTC resources in the recovery stage of the COVID-19 pandemic. To improve outcomes for colorectal cancer (CRC) in the UK, establishing a selective straight-to-test CTC 2WWCP should be considered. Documented consent detailing the risks and benefits of CTC versus colonoscopy should take place in order to assist the patient in making an informed choice.

Evidence of Small Airways Disease and the Immediate Effects of Lumacaftor/Ivacaftor in Children with Cystic Fibrosis

Aim The aim of this study was to explore risk factors for acute changes in lung function following initiation of lumacaftor/ivacaftor (LUM/IVA) in children with cystic fibrosis. Methods Retrospective review of all children commenced on LUM/IVA treatment over a one-year period. CT Thorax images were reviewed for evidence of air trapping using the Brody score. Results Data was collected from 15 children. A transient decline in ppFEV1 was observed after initiation of LUM/IVA in 93% (n=14) of patients with an absolute mean decline of -10.8%. There was a statistically significant inverse relationship between ΔFEV1 and baseline ppFEV1. There was no relationship between air trapping score and ΔFEV1 (p=0.41). Conclusion Pre-existing small airways disease is not a risk factor for acute changes in lung function following initiation of LUM/IVA. Our results suggest that a LUM/IVA-related decline in lung function is more significant in CF children with higher baseline FEV1.

Mass and the Dangers of Syncope

Introduction Syncope is defined as a transient, self-limited loss of consciousness with an inability to maintain postural tone that is followed by spontaneous recovery. We revisit situational syncope focusing on one situation, Mass. Methods We interrogated our electronic syncope database for key terms associated with situational syncope. From the most commonly encountered situation, Mass, we interrogated the results of tilt testing performed to identify evidence of orthostatic hypotension. Results There were 110 cases of situational syncope identified with 56.3% (n=62) taking place at mass. All had tilt table testing performed and 15.4% (n=17) had evidence of orthostatic hypotension. Conclusion The multiple sudden changes in position during mass from sitting to kneeling to standing can precipitate an episode of orthostatic hypotension. Consideration should be given as to whether it is safe for older mass goers to be subjected to such significant orthostatic stress.

A71 MESOCAVAL SHUNT EMBOLIZATION AS A TREATMENT FOR MEDICALLY REFRACTORY HEPATIC ENCEPHALOPATHY IN A PATIENT WITH NON-DECOMPENSATED CIRRHOSIS

Background

Hepatic encephalopathy (HE) is a common complication of cirrhosis with a spectrum of neuropsychiatric manifestations. In patients with medically refractory HE (i.e. after a trial of Lactulose with or without Rifaximin), it is warranted to investigate and manage underlying spontaneous portosystemic shunts (SPS) as a cause of chronic or recurrent HE in the absence of precipitants.

Aims

Here we present a case report of a patient with non-decompensated cirrhosis who underwent mesocaval shunt embolization as a treatment for medically refractory HE (grade III) in the absence of underlying precipitants.

Methods

The patient’s chart was reviewed and radiological images pre- and post- shunt embolization were obtained. A literature review was performed on the treatment of SPS for HE in cirrhosis.

Results

Mr. H is a 56-year-old man with alcohol-related cirrhosis who was admitted to the hospital with a reduced level of consciousness. On examination he was arousable but nonverbal. Asterixis was observed with no focal neurologic findings. Laboratory, infectious and toxicology results were negative. His MELD-Na score was 11. Computed tomography (CT) of his head and ultrasound of his abdomen were normal. The patient did not improve with lactulose and rifaximin. A CT of his abdomen/pelvis revealed a large SPS arising from the superior mesenteric vein (SMV) to the infrarenal inferior vena cava (IVC). A decision was made to attempt partial occlusion of the shunt. A 22-mm Amplatzer™ Vascular Plug II and two 8mm x 59mm Atrium balloon expandable covered stents were deployed in the right gonadal vein. Partial occlusion was subsequently demonstrated with contrast injection. The patient had gradual improvement of his HE and became independent for his ADLs six months post-procedure.

Conclusions

Between 45–70% of patients with cirrhosis and medically refractory HE have SPS as a result of chronic liver injury and increased portal venous pressures. AASLD guidelines recommend screening for SPS in cirrhotic patients with medically refractory HE or in HE with compensated liver disease. Shunt embolization in patients with MELD &lt; 11 has been shown to reverse chronic or recurrent HE as well as improve hepatic outcomes for at least a two-year follow-up, as shown by a recent multicentre survey done by Laleman et al. Further studies have shown that portosystemic shunt embolization can result in reversal of HE in over 75% of cases. The most frequently encountered shunt in these studies is the splenorenal shunt. Our case, however, offers insight into the less commonly experienced mesocaval shunt, which accounts for only 5% of large SPS. We have shown that mesocaval shunts, when discovered, have the potential for successful treatment with embolization that can lead to reversal and long-term clinical remission of HE.

Funding Agencies

None

Mechanisms of checkpoint inhibition-induced adverse events

Immune checkpoint inhibition has revolutionized the treatment of several solid cancers, most notably melanoma and non-small-cell lung cancer (NSCLC). Drugs targeting cytotoxic T lymphocyte antigen (CTLA)-4 and programmed cell death 1 (PD-1) have made their way into routine clinical use; however, this has not been without difficulties. Stimulation of the immune system to target cancer has been found to result in a reduction of self-tolerance, leading to the development of adverse effects that resemble autoimmunity. These adverse effects are erratic in their onset and severity and can theoretically affect any organ type. Several mechanisms for immune-related toxicity have been investigated over recent years; however, no consensus on the cause or prediction of toxicity has been reached. This review seeks to examine reported evidence for possible mechanisms of toxicity, methods for prediction of those at risk and a discussion of future prospects within the field.

Animal Welfare Worldwide, the Opinion of Practicing Veterinarians

The objective of this study was to investigate the animal welfare issues considered the most important by companion animal veterinarians worldwide. For this purpose, a global survey of several potential animal welfare issues was distributed via SurveyMonkey® in multiple languages. The distribution of survey responses differed by region. The main animal welfare concern reported worldwide was obesity, although there were differences across regions, possibly due to cultural and socioeconomic factors. Anthropomorphism (attributing human qualities or characteristics to an animal) was an issue in western countries but less so in Asia, Africa, and Oceania. There were significant differences between Asia and Europe, Africa, and Oceania in the importance and prevalence of convenience euthanasia. There were also age and sex differences in participant responses, with older veterinarians reporting fewer welfare problems than younger veterinarians, and female veterinarians reporting more welfare issues than their male counterparts.