Multiorgan MRI findings after hospitalisation with COVID-19 in the UK (C-MORE): a prospective, multicentre, observational cohort study

INTRODUCTION

The multiorgan impact of moderate to severe coronavirus infections in the post-acute phase is still poorly understood. We aimed to evaluate the excess burden of multiorgan abnormalities after hospitalisation with COVID-19, evaluate their determinants, and explore associations with patient-related outcome measures.

METHODS

In a prospective, UK-wide, multicentre MRI follow-up study (C-MORE), adults (aged ≥18 years) discharged from hospital following COVID-19 who were included in Tier 2 of the Post-hospitalisation COVID-19 study (PHOSP-COVID) and contemporary controls with no evidence of previous COVID-19 (SARS-CoV-2 nucleocapsid antibody negative) underwent multiorgan MRI (lungs, heart, brain, liver, and kidneys) with quantitative and qualitative assessment of images and clinical adjudication when relevant. Individuals with end-stage renal failure or contraindications to MRI were excluded. Participants also underwent detailed recording of symptoms, and physiological and biochemical tests. The primary outcome was the excess burden of multiorgan abnormalities (two or more organs) relative to controls, with further adjustments for potential confounders. The C-MORE study is ongoing and is registered with ClinicalTrials.gov, NCT04510025.

FINDINGS

Of 2710 participants in Tier 2 of PHOSP-COVID, 531 were recruited across 13 UK-wide C-MORE sites. After exclusions, 259 C-MORE patients (mean age 57 years [SD 12]; 158 [61%] male and 101 [39%] female) who were discharged from hospital with PCR-confirmed or clinically diagnosed COVID-19 between March 1, 2020, and Nov 1, 2021, and 52 non-COVID-19 controls from the community (mean age 49 years [SD 14]; 30 [58%] male and 22 [42%] female) were included in the analysis. Patients were assessed at a median of 5·0 months (IQR 4·2-6·3) after hospital discharge. Compared with non-COVID-19 controls, patients were older, living with more obesity, and had more comorbidities. Multiorgan abnormalities on MRI were more frequent in patients than in controls (157 [61%] of 259 vs 14 [27%] of 52; p<0·0001) and independently associated with COVID-19 status (odds ratio [OR] 2·9 [95% CI 1·5-5·8]; padjusted=0·0023) after adjusting for relevant confounders. Compared with controls, patients were more likely to have MRI evidence of lung abnormalities (p=0·0001; parenchymal abnormalities), brain abnormalities (p<0·0001; more white matter hyperintensities and regional brain volume reduction), and kidney abnormalities (p=0·014; lower medullary T1 and loss of corticomedullary differentiation), whereas cardiac and liver MRI abnormalities were similar between patients and controls. Patients with multiorgan abnormalities were older (difference in mean age 7 years [95% CI 4-10]; mean age of 59·8 years [SD 11·7] with multiorgan abnormalities vs mean age of 52·8 years [11·9] without multiorgan abnormalities; p<0·0001), more likely to have three or more comorbidities (OR 2·47 [1·32-4·82]; padjusted=0·0059), and more likely to have a more severe acute infection (acute CRP >5mg/L, OR 3·55 [1·23-11·88]; padjusted=0·025) than those without multiorgan abnormalities. Presence of lung MRI abnormalities was associated with a two-fold higher risk of chest tightness, and multiorgan MRI abnormalities were associated with severe and very severe persistent physical and mental health impairment (PHOSP-COVID symptom clusters) after hospitalisation.

INTERPRETATION

After hospitalisation for COVID-19, people are at risk of multiorgan abnormalities in the medium term. Our findings emphasise the need for proactive multidisciplinary care pathways, with the potential for imaging to guide surveillance frequency and therapeutic stratification.

FUNDING

UK Research and Innovation and National Institute for Health Research.

Clinical characteristics with inflammation profiling of long COVID and association with 1-year recovery following hospitalisation in the UK: a prospective observational study

BACKGROUND

No effective pharmacological or non-pharmacological interventions exist for patients with long COVID. We aimed to describe recovery 1 year after hospital discharge for COVID-19, identify factors associated with patient-perceived recovery, and identify potential therapeutic targets by describing the underlying inflammatory profiles of the previously described recovery clusters at 5 months after hospital discharge.

METHODS

The Post-hospitalisation COVID-19 study (PHOSP-COVID) is a prospective, longitudinal cohort study recruiting adults (aged ≥18 years) discharged from hospital with COVID-19 across the UK. Recovery was assessed using patient-reported outcome measures, physical performance, and organ function at 5 months and 1 year after hospital discharge, and stratified by both patient-perceived recovery and recovery cluster. Hierarchical logistic regression modelling was performed for patient-perceived recovery at 1 year. Cluster analysis was done using the clustering large applications k-medoids approach using clinical outcomes at 5 months. Inflammatory protein profiling was analysed from plasma at the 5-month visit. This study is registered on the ISRCTN Registry, ISRCTN10980107, and recruitment is ongoing.

FINDINGS

2320 participants discharged from hospital between March 7, 2020, and April 18, 2021, were assessed at 5 months after discharge and 807 (32·7%) participants completed both the 5-month and 1-year visits. 279 (35·6%) of these 807 patients were women and 505 (64·4%) were men, with a mean age of 58·7 (SD 12·5) years, and 224 (27·8%) had received invasive mechanical ventilation (WHO class 7-9). The proportion of patients reporting full recovery was unchanged between 5 months (501 [25·5%] of 1965) and 1 year (232 [28·9%] of 804). Factors associated with being less likely to report full recovery at 1 year were female sex (odds ratio 0·68 [95% CI 0·46-0·99]), obesity (0·50 [0·34-0·74]) and invasive mechanical ventilation (0·42 [0·23-0·76]). Cluster analysis (n=1636) corroborated the previously reported four clusters: very severe, severe, moderate with cognitive impairment, and mild, relating to the severity of physical health, mental health, and cognitive impairment at 5 months. We found increased inflammatory mediators of tissue damage and repair in both the very severe and the moderate with cognitive impairment clusters compared with the mild cluster, including IL-6 concentration, which was increased in both comparisons (n=626 participants). We found a substantial deficit in median EQ-5D-5L utility index from before COVID-19 (retrospective assessment; 0·88 [IQR 0·74-1·00]), at 5 months (0·74 [0·64-0·88]) to 1 year (0·75 [0·62-0·88]), with minimal improvements across all outcome measures at 1 year after discharge in the whole cohort and within each of the four clusters.

INTERPRETATION

The sequelae of a hospital admission with COVID-19 were substantial 1 year after discharge across a range of health domains, with the minority in our cohort feeling fully recovered. Patient-perceived health-related quality of life was reduced at 1 year compared with before hospital admission. Systematic inflammation and obesity are potential treatable traits that warrant further investigation in clinical trials.

FUNDING

UK Research and Innovation and National Institute for Health Research.

O106 Maximising the benefits of bariatric surgery through targeting ghrelin: a randomised, double-blind, placebo-controlled crossover study in people with suboptimal weight loss after bariatric surgery

Introduction

One in 5 people have a suboptimal weight-loss (WL) response to bariatric surgery. The causes are unclear, but patients report resumed hunger and increased food intake, eating behaviours driven by the orexigenic hormone, ghrelin. This proof-of-concept study aimed to evaluate the impact of reducing circulating acyl-ghrelin, the biologically active isoform, on appetite and energy intake in people with suboptimal WL and aberrant ghrelin profile after bariatric surgery.

Methods

Thirty-five patients with &lt;20%WL from 12 months after Roux-en-Y gastric bypass (RYGB) or sleeve gastrectomy (SG) and aberrant circulating ghrelin profile underwent 10 days of treatment with a novel, highly-selective ghrelin o-acyltransferase inhibitor, GLWL-01, and placebo. The primary endpoint was within-person change in ad libitum energy intake during a test meal on day 10. Secondary endpoints assessed subjective appetite, food cravings, macronutrient intake, gut hormones, cardiometabolic profile and body composition. Ethical approval was obtained.

Results

Thirty-one participants (26 RYGB, 9 SG) completed both cycles. GLWL-01 produced a 58.9±27.2% decrease in fasting plasma acyl-ghrelin and 29.3±27.1% increase in desacyl-ghrelin after 10 days. Marked reduction in subjective hunger, food cravings and hedonic influence on appetite was observed with GLWL-01, however objective appetite measures – ad libitum and free-living energy intake – did not change. Circulating levels of cardiovascular risk-conferring lipoproteins significantly improved and no adverse impact on glycaemic control was observed.

Conclusion

Pharmacological modulation of the ghrelin system may be used as part of a personalised therapeutic approach to optimise clinical outcomes in patients with suboptimal WL after bariatric surgery.

Take-home message

This first-in-human mechanistic study shows that pharmacological modulation of the ghrelin system is a promising therapeutic strategy for maximising weight loss response to bariatric surgery.

POS0299 SOCIOECONOMIC BACKGROUND IS ASSOCIATED WITH DISCORDANCE BETWEEN HEALTH LITERACY OF PEOPLE WITH RMDs AND ASSESSMENT OF HEALTH LITERACY BY THEIR TREATING HEALTH PROFESSIONAL

Background:

Health literacy is increasingly recognised as a critical determinant of health. While care should be tailored to the health literacy needs of each patient [1], research in primary care shows that physicians often under- or overestimate their patients’ health literacy, with socioeconomic factors playing a role [2]. Evidence in a rheumatology setting is scarce.

Objectives:

-To investigate discordance between health literacy of patients with rheumatic and musculoskeletal diseases (RMDs) and assessment by their treating health professional, across the nine domains of the Health Literacy Questionnaire (HLQ).

-To explore whether discordance is associated with the patient’s socioeconomic background.

Methods:

Patients with rheumatoid arthritis (RA), spondyloarthritis (SpA), or gout from three Dutch outpatient rheumatology clinics completed the HLQ [3]. The treating health professional (rheumatologist, physician assistant, nurse (practitioner) or resident) assessed their patient’s level for each HLQ domain, or answered “I don’t know”. Discordance per domain was calculated as the patient’s score subtracted from the professional’s score (both on a 0-10 scale). Discordance was defined as a ≥2-point difference in either direction. Adjusted multilevel multinomial regression models (ref. = no discordance) with patients clustered by health professionals were computed to test the role of socioeconomic factors (age, gender, education level, immigration background, living alone and employment status) in negative (i.e. professional scored lower) and positive (i.e. professional scored higher) discordance.

Results:

Of 778 patients included, 41% had RA, 34% had SpA, and 25% had gout. We observed considerable discordance across all HLQ domains (Table 1). Professionals answered “I don’t know” most often for “Having social support for health” (19.4%, domain 4). Most discordance occurred for “Critically appraising information” (42.1%, domain 5). For all HLQ domains except “Having social support for health” (domain 4), discordance was associated with socioeconomic factors. In patients with a non-Western immigration background, professionals were likely to assign lower scores than patients’ HLQ scores in six domains. Education level was an important driver of discordance in seven domains, with the direction of the association being domain-dependent. Other factors associated with discordance in multiple domains were type of rheumatic disease, comorbidities, mastery, how well the professional knew the patient, type of professional, and disease impact.

Table 1.

Discordance per HLQ domain (n=778)

HLQ domainProfessional scored lowerNo discordanceProfessional scored higherProfessional did not known (%)1. Healthcare provider support128 (16)514 (66)126 (16)10 (1)2. Having sufficient information100 (13)528 (68)143 (18)7 (1)3. Actively managing health95 (12)461 (59)208 (27)14 (2)4. Having social support for health55 (7)397 (51)175 (22)151 (19)5. Critically appraising information78 (10)448 (58)250 (32)2 (0)6. Actively engaging with providers205 (26)500 (64)70 (9)3 (0)7. Navigating the health system115 (15)544 (70)107 (14)12 (2)8. Finding health information163 (21)492 (63)98 (13)25 (3)9. Understanding health information145 (19)511 (66)110 (14)12 (2)

Conclusion:

Considerable discordance between patients’ health literacy and their treating health professionals’ assessment exists across health literacy domains. In eight out of nine domains, discordance was associated with the patient’s socioeconomic background, particularly education and immigration background. Understanding and addressing the reasons for discordance between patient-reported and professional-perceived health literacy has potential to improve responsiveness to patients’ needs, promote better communication and ultimately improve care outcomes.

References:

[1]Bakker et al., Arthrit Care Res (2021)

[2]Storms et al., BMJ Open (2019)

[3]Osborne et al., BMC Public Health (2013)

Disclosure of Interests:

None declared

OP0257-PARE USING PATIENT HEALTH LITERACY PROFILES TO IDENTIFY SOLUTIONS TO CHALLENGES FACED IN RHEUMATOLOGY CARE

Background:

The prevalence of limited health literacy (i.e. cognitive and social resources of individuals to access, understand and apply health information to promote and maintain good health) in the Netherlands is estimated to be over 36% [1]. Access to and outcomes of rheumatological care may be compromised by limited patient health literacy, yet little is known about how to address this, thus action is required. As influencing individual patients’ health literacy in the rheumatology context is often unrealistic, it is paramount for the health system to be tailored to the health literacy needs of its patients. The OPtimising HEalth LIteracy and Access (Ophelia) process offers a method to inform system change [2].

Objectives:

Following the Ophelia approach:

Methods:

Patients with RA, SpA and gout attending outpatient clinics in three centres in the Netherlands completed the Health Literacy Questionnaire (HLQ) and questions on socio-demographic and health-related characteristics. Hierarchical cluster analysis using Ward’s method identified clusters based on the nine HLQ domains. Three researchers jointly examined 24 cluster solutions for meaningfulness by interpreting HLQ domain scores and patient characteristics. Meaningful clusters were translated into health literacy profiles using HLQ patterns and demographic data. A patient research partner confirmed the identified profiles. Patient vignettes were designed by combining cluster analyses results with qualitative patient interviews. The vignettes were used in two two-hour co-design workshops with rheumatologists and nurses to discuss their perspective on health literacy-related challenges for patients and professionals, and generate ideas on how to address these challenges.

Results:

In total, 895 patients participated: 49% female, mean age 61 years (±13.0), 25% lived alone, 18% had a migrant background, 6.6% did not speak Dutch at home and 51% had low levels of education. Figure 1 shows a heat map of identified health literacy profiles, displaying the score distribution per profile across nine health literacy domains. Figure 2 shows an excerpt of a patient vignette, describing challenges for a patient with profile number 9. The workshops were attended by 7 and 14 nurses and rheumatologists. Proposed solutions included health literacy communication training for professionals, developing and improving (visual) patient information materials, peer support for patients through patient associations or group consultations, a clear referral system for patients who need additional guidance by a nurse, social worker, lifestyle coach, pharmacist or family doctor, and more time with rheumatology nurses for target populations. Moreover, several system adaptations to the clinic, such as a central desk for all patient appointments, were proposed.

Conclusion:

This study identified several distinct health literacy profiles of patients with rheumatic conditions. Engaging with health professionals in co-design workshops led to numerous bottom-up ideas to improve care. Next steps include co-design workshops with patients, followed by prioritising and testing proposed interventions.

References:

[1]Heijmans M. et al. Health Literacy in the Netherlands. Utrecht: Nivel 2018

[2]Batterham R. et al. BMC Public Health 2014, 14:694

Disclosure of Interests:

Mark Bakker: None declared, Polina Putrik: None declared, Jany Rademakers Speakers bureau: In March 2017, Prof. Dr. Rademakers was invited to speak about health literacy at the “Heuvellanddagen” Conference, hosted by Janssen-Cilag., Mart van de Laar Consultant of: Sanofi Genzyme, Speakers bureau: Sanofi Genzyme, Harald Vonkeman: None declared, Marc R Kok Grant/research support from: BMS and Novartis, Consultant of: Novartis and Galapagos, Hanneke Voorneveld: None declared, Sofia Ramiro Grant/research support from: MSD, Consultant of: Abbvie, Lilly, Novartis, Sanofi Genzyme, Speakers bureau: Lilly, MSD, Novartis, Maarten de Wit Grant/research support from: Dr. de Wit reports personal fees from Ely Lilly, 2019, personal fees from Celgene, 2019, personal fees from Pfizer, 2019, personal fees from Janssen-Cilag, 2017, outside the submitted work., Consultant of: Dr. de Wit reports personal fees from Ely Lilly, 2019, personal fees from Celgene, 2019, personal fees from Pfizer, 2019, personal fees from Janssen-Cilag, 2017, outside the submitted work., Speakers bureau: Dr. de Wit reports personal fees from Ely Lilly, 2019, personal fees from Celgene, 2019, personal fees from Pfizer, 2019, personal fees from Janssen-Cilag, 2017, outside the submitted work., Richard Osborne Consultant of: Prof. Osborne is a paid consultant for pharma in the field of influenza and related infectious diseases., Roy Batterham: None declared, Rachelle Buchbinder: None declared, Annelies Boonen Grant/research support from: AbbVie, Consultant of: Galapagos, Lilly (all paid to the department)

P3419Independent effects of visceral, subcutaneous and liver fat, and fat-free mass on cardiometabolic risk factors in teenagers

Acknowledgement/Funding

Alexander Jones is funded by a British Heart Foundation Intermediate Clinical Research Fellowship (FS/18/22/33479)

Cost-effectiveness of bariatric surgery in adolescents with severe obesity in the UK

Evidence shows that surgery for severe obesity in adults improves health and psychological functioning, and is cost-effective. Data on bariatric surgery for adolescents with severe obesity are extremely limited, with no evidence on cost-effectiveness. We evaluated the lifetime cost-effectiveness of bariatric surgery compared with no surgery in adolescents with severe obesity from the UK's National Health Service perspective. Eighteen adolescents with body mass index ≥40 kg m^-2 who underwent bariatric surgery (laparoscopic Roux en Y Gastric Bypass [RYGB] [N = 9], and laparoscopic Sleeve Gastrectomy [SG] [N = 9]) at University College London Hospitals between January 2008 and December 2013 were included. We used a Markov cohort model to compare the lifetime expected costs and quality-adjusted life years (QALYs) between bariatric surgery and no surgery. Mean cost of RYGB and SG procedures were £7100 and £7312, respectively. For RYGB vs. no surgery, the incremental cost/QALY was £2018 (95% CI £1942 - £2042) for males and £2005 (95% CI £1974 - £2031) for females. For SG vs. no surgery, the incremental cost/QALY was £1978 (95% CI £1954 - £2002) for males and £1941 (95% CI £1915 - £1969) for females. Bariatric surgery in adolescents with severe obesity is cost-effective; it is more costly than no surgery however it markedly improved quality of life.

The effect of sibutramine prescribing in routine clinical practice on cardiovascular outcomes: a cohort study in the United Kingdom

BACKGROUND/OBJECTIVES

The marketing authorization for the weight loss drug sibutramine was suspended in 2010 following a major trial that showed increased rates of non-fatal myocardial infarction and cerebrovascular events in patients with pre-existing cardiovascular disease. In routine clinical practice, sibutramine was already contraindicated in patients with cardiovascular disease and so the relevance of these influential clinical trial findings to the 'real World' population of patients receiving or eligible for the drug is questionable. We assessed rates of myocardial infarction and cerebrovascular events in a cohort of patients prescribed sibutramine or orlistat in the United Kingdom.

SUBJECTS/METHODS

A cohort of patients prescribed weight loss medication was identified within the Clinical Practice Research Datalink. Rates of myocardial infarction or cerebrovascular event, and all-cause mortality were compared between patients prescribed sibutramine and similar patients prescribed orlistat, using both a multivariable Cox proportional hazard model, and propensity score-adjusted model. Possible effect modification by pre-existing cardiovascular disease and cardiovascular risk factors was assessed.

RESULTS

Patients prescribed sibutramine (N=23,927) appeared to have an elevated rate of myocardial infarction or cerebrovascular events compared with those taking orlistat (N=77,047; hazard ratio 1.69, 95% confidence interval 1.12-2.56). However, subgroup analysis showed the elevated rate was larger in those with pre-existing cardiovascular disease (hazard ratio 4.37, 95% confidence interval 2.21-8.64), compared with those with no cardiovascular disease (hazard ratio 1.52, 95% confidence interval 0.92-2.48, P-interaction=0.0076). All-cause mortality was not increased in those prescribed sibutramine (hazard ratio 0.67, 95% confidence interval 0.34-1.32).

CONCLUSIONS

Sibutramine was associated with increased rates of acute cardiovascular events in people with pre-existing cardiovascular disease, but there was a low absolute risk in those without. Sibutramine's marketing authorization may have, therefore, been inappropriately withdrawn for people without cardiovascular disease.

Building equity in chronic disease management in Thailand: a whole-system provincial trial of systematic, pro-active chronic illness care

Thailand has a history of implementing innovative and proactive policies to address the health needs of its population. Since 1962 Thailand has implemented initiatives that led to it having a health system characterized by a primary care focus, decentralization and mechanisms to maximize equity and universal access to basic care at the local level. Thai health structures initially evolved to meet challenges including infectious and developmental diseases and later HIV. Early in the 21st century chronic illness rapidly became the greatest cause of morbidity and mortality and the question has arisen how Thailand can adapt its strong health system to deal with the new epidemics. This article describes an effort to reorient provincial health services to meet the needs of the increasing number of people with diabetes and heart disease. It describes measures taken to build on the equity-promoting elements of the Thai health system. The project included; a situational analysis, development and implementation of a chronic disease self-management intervention implemented by nurses and alignment of provincial health services. The self-management intervention is currently being evaluated within a clustered randomized control trial. The evaluation has been developed to fit with the focus on equity in relation to both selection criteria and the outcomes that are being assessed.

Construction of a GP integration model

There are frequent calls to improve integration of health services, within and between primary and secondary care sectors. In Australia, general medical practitioners (GPs) are central to these endeavours. This paper aims to better conceptualise GP integration and to develop a model and index based on this. A conceptualisation of integration is proposed based on integration fundamentally as an activity or process not structure. Integration process is the frequency and quality of episodes of information exchange involving the GP and another practitioner or patient and aimed at fulfilling the objectives of the health care system with regard to patient care. These are both direct responses to structural forces and emergent GP capacities and dispositions. The content of this typology was studied using Concept Mapping in 11 groups of GPs, consumers and other practitioners. Clusters of related statements within thematic domains were used as the basis for a provisional model. This was tested using confirmatory factor analysis in a data set derived from a national probability sample of 501 GPs. Some re-specification of the model was necessary, with three integration process factors needing to be subdivided. One factor congeneric model assumptions were used to identify the constituent items for these factors. The result was a model in which 50 items measured nine integration process factors and 20 items measured five enabling factors. Two distinct but correlated higher order factors, relating to individual patient care and public (or community) health--in contrast to a single higher order factor for integration--were identified. The re-specified model was tested with a new sample of 151 GPs and exhibited strong psychometric properties. Reliability and validity were acceptable to this stage of the indices' development. Further testing of the index is necessary to demonstrate factor invariance of the indices in other contexts as well as their utility in cross-structural analysis. That said, the indices have immediate uses.