GRACE: protocol for a UK, secondary care, multicentre, assessor-blinded randomised controlled trial with a non-inferiority comparison to evaluate graduated compression stockings as an adjunct to extended duration pharmacological thromboprophylaxis for venous thromboembolism prevention

Introduction
Venous thromboembolism (VTE) occurs when a blood clot forms in a vein. It is comprised of deep vein thrombosis (DVT) and pulmonary embolism and can be potentially life-threatening. Patients undergoing surgery are at increased risk of developing VTE within hospital admission and 90 days after hospital discharge are collectively known as hospital-acquired thrombosis (HAT). Without the use of thromboprophylaxis, the untreated risk of VTE is reported to be as high as 40–60% in those undergoing major orthopaedic procedures and around 15–40% in the general surgical population.
HAT accounts for around 12 000 deaths per year in the UK. For patients undergoing surgery, there is good evidence for the use of thromboprophylaxis to prevent VTE.
Thromboprophylaxis is available in both pharmacological and mechanical forms. While there is a huge body of evidence demonstrating that pharmacological thromboprophylaxis significantly reduces VTE by 30–65%, the benefit of graduated compression stockings (GCS) has been called into question. The GRACE study (Graduated Compression stocking as an adjunct to Extended duration pharmacological thromboprophylaxis for venous thromboembolism prevention) aims to evaluate the adjuvant benefit of GCS in addition to extended duration pharmacological thromboprophylaxis (EDPTP) for elective surgical patients at highest risk of VTE.

Methods and analysis
GRACE is a pragmatic, multicentre randomised trial of adults undergoing surgery who are at high risk of VTE. Participants are randomised into a 1:1 ratio to either EDPTP and compression stockings (control arm) or EDPTP (intervention arm). Following randomisation, participants will undergo surgery and be followed up centrally at 7, 21–35 and 90 days after their procedure. All participants will be offered a bilateral full lower limb duplex scan at 21–35 days post procedure to capture any asymptomatic DVT.
The trial aims to randomise 8608 participants from around 50 National Health Service (NHS) and non-NHS sites in the UK over a 24-month period. The primary endpoint is any imaging-confirmed incidence of VTE within 90 days of surgery.

Ethics and dissemination
On 20 December 2023, GRACE received favourable ethical approval from the Wales Research Ethics Committee 3 Cardiff (23/WA/0350) and the Health Research Authority (IRAS 333539). The results of the study will be disseminated via peer-reviewed publications, presentation at national and international conferences and to study participants via electronic newsletter and social media channels.

Trial registration number
ISRCTN11667770.

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Impact of left ventricular end-diastolic pressure on clinical outcomes in patients with ST-elevation myocardial infarction (Hunter LVEDP Study): a prospective, single-centre study

Objectives
Elevated left ventricular end-diastolic pressure (LVEDP) in ST-segment elevation myocardial infarction (STEMI) has been studied in patients who received thrombolysis or who were treated early in the primary percutaneous coronary intervention (PCI) era; LVEDP was found to be a predictor of adverse outcomes in these retrospective post hoc analyses. The aim of the current analysis is to assess the prognostic value of the elevated LVEDP in STEMI patients undergoing primary PCI in current contemporary practice.

Design
Prospective, single-centre study.

Participants
Our study enrolled STEMI patients with elevated LVEDP undergoing primary PCI at John Hunter Hospital, Newcastle, Australia.

Primary outcome measure
The primary endpoint was the combination of 12-month all-cause mortality and heart failure admissions, comparing different quartiles of LVEDP.

Results
A total of 997 patients underwent primary PCI at our hospital during the 5-year study period (age: 64±13 years, males: 73%; n=728) from 1 January 2015 to 31 December 2019. The median LVEDP for the whole cohort was 27 mm Hg (IQR: 22–31 mm Hg). The median LVEDP was 17 mm Hg (IQR: 13–18 mm Hg) and 33 mm Hg (IQR: 30–36 mm Hg) for 1st and 4th quartiles respectively (p

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Influence of concurrent oral calcium carbonate supplementation on steady-state pharmacokinetics of once daily oral raltegravir in persons with HIV: a protocol for a prospective open-label non-randomised study in Canada

Introduction
Raltegravir is a potent HIV-integrase strand transfer inhibitor (INSTI). Despite its strong activity against HIV-1 strains resistant to other antiretroviral drug classes, it is usually used in combination with other antiretroviral drugs due to the empirical requirement for anti-HIV drug combinations to ensure effective anti-retroviral therapy (ART). As an early-arriving INSTI, raltegravir is clinically familiar for its safety, tolerability and treatment effectiveness. High-dose calcium carbonate formulated as an antacid (as opposed to a supplement formulation) taken orally together with raltegravir is known to reduce systemic raltegravir exposure due to chelation and reduced absorption. This study aims to assess the effect of daily calcium carbonate antacid as TUMS Ultra Strength (US) administration in lower doses, as currently used for oral calcium supplementation, on the steady-state pharmacokinetics (PKs) of once-daily oral raltegravir.

Methods and analysis
This is an open-label, three-treatment series in three periods in a single group, fixed-sequence PK study in 12 healthy adult volunteers with HIV on ART. Subjects will take 1200 mg of raltegravir single QD oral dose alone for 7 days (period one), then raltegravir 1200 mg with calcium carbonate 500 mg from day 8 to day 14 (period two) and raltegravir 1200 mg with calcium carbonate 1000 mg from day 15 to day 22 (period three). We will conduct serial PK sampling from observed dosing on days 7, 14 and 21, with 24-hour PK sampling scheduled for days 8, 15 and 22. Follow-up will continue until day 51.

Ethics and dissemination
This study will adhere to the ICH GCP Guidelines and the Declaration of Helsinki. Ethics approval was obtained from the Ottawa Health Science Network Research Ethics Board under study ID 20190750–01 hour. Informed consent will be obtained from all participants prior to enrolment. This protocol will be published in a peer-reviewed journal prior to the study’s completion and closure. Results generated from this activity will also be reported in a peer-reviewed journal.

Trial registration number
NCT04258475.

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OptiNeoCare: optimisation of routine care in the management of severe perinatal asphyxia in full-term or near-term newborns – study protocol for analysis of suboptimal care by confidential inquiries and e-self report

Introduction
Severe perinatal asphyxia at term or near term remains a critical public health issue, associated with high risks of neonatal death and hypoxic-ischaemic encephalopathy (HIE). Despite improved clinical guidelines, suboptimal care persists in many cases, and previous audits have demonstrated that up to 50% of asphyxia cases could be associated with suboptimal care. OptiNeoCare is a French study which aims to assess the prevalence and determinants of suboptimal obstetric and neonatal care and evaluate its potential impact on neonatal outcomes.

Materials and methods
This prospective, population-based observational study will include newborns ≥36 weeks’ gestation with severe perinatal asphyxia across 12 French perinatal networks (213 maternity units). Inclusion criteria comprise neonatal death or moderate/severe HIE with confirmed biochemical markers of asphyxia. Data will be collected prospectively from labour wards, transport teams and neonatal intensive care units using an electronic case report form, and the in-situ team will be invited to complete a morbi-mortality review (MMR). Approximately 336 cases will be included over 12 months, with 25% randomly selected for confidential enquiry by two experts. The quality of care will be assessed based on a structured classification of medical errors (diagnostic, therapeutic, preventive and systemic) by a panel of experts including an obstetrician or midwife and a paediatrician. Root cause analysis will identify determinants of suboptimal care. A concordance analysis will compare findings from MMRs and confidential enquiries. Statistical analysis will include multivariable logistic regression to explore associations between care quality and neonatal outcomes.

Ethics and dissemination
Ethical approval was granted by the Ethics Committee for Research in Obstetrics and Gynaecology. Informed non-opposition is required from participants. Results will be shared with participating centres, healthcare professionals and through scientific dissemination.

Trial registration number
ClinicalTrials.gov ID: NCT06322732.

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[Articles] Efficacy and safety of narlumosbart, an anti-RANKL monoclonal antibody, in postmenopausal women with osteoporosis: a multi-center, randomized, double-blind, placebo- and active-controlled, phased II study

In this phase II trial of postmenopausal women with osteoporosis, narlumosbart demonstrated superiority over placebo in increasing BMD at 12 months following administration at 6-month intervals, with a tolerable safety profile in the short term, consistent with that of anti-RANKL monoclonal antibodies.

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Trends in educational inequality in healthy life expectancy in Denmark between 2010 and 2021: a population-based study

Objectives
For several decades, mortality has decreased more rapidly among individuals with a higher socioeconomic position than among those with a lower position. This widening social inequality gap has increasingly been recognised as an important aspect of public health research and policies. The objective of this study was to examine trends in educational inequality in healthy life expectancy (HLE) in Denmark between 2010 and 2021 at the age of 30 years.

Design
The study is a population-based study based on register data on longest attained education, standard life tables and self-reported health information from nationwide health surveys.

Setting
The study is conducted among the general adult population in Denmark.

Participants
Participants include respondents from the Danish National Health Survey and the Danish Health and Morbidity Survey in 2010, 2013, 2017 and 2021 aged ≥30 years.

Primary and secondary outcome measures
Expected lifetime in good self-rated health, with no long-standing illness and with no activity limitations was estimated by Sullivan’s method, and educational inequality was expressed by the Slope Index of Inequality.

Results
Between 2010 and 2021, educational inequality in HLE increased among both men and women for long-standing illness (5-year trend: +1.1 and +1.2 years) and activity limitations (+2.4 and +2.6 years) but remained stable among men (+0.1 year) and decreased among women (–0.3 year) for self-rated health. For the latter two indicators, the inequality gap narrowed after 2017.

Conclusion
Trends in educational inequality in HLE in Denmark 2010–2021 vary by health indicator. Steadily widening gaps were demonstrated for long-standing illness, while narrowing gaps were seen after 2017 for activity limitations and self-rated health. Future studies are encouraged to explore potential health risk behaviours that may explain or modify these inequality trends.

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Participative research for individualised care in cardiovascular diseases (PRIC-CVD): study protocol for a non-interventional, multicentre mixed-methods study as part of iCARE4CVD

Introduction
Cardiovascular disease (CVD) represents a public health burden, with high prevalence and significant morbidity and mortality. Although evidence-based interventions exist, there is a need for more individualised care. The European project Individualised care from early risk of cardiovascular disease to established heart failure (iCARE4CVD) aims to personalise CVD prevention and treatment. Participatory health research, which actively involves patients in the planning, implementation and evaluation of projects, plays a crucial role here. However, patient participation is often unsuccessful due to the lack of a representative patient sample who is involved throughout the project’s duration, has knowledge of the project and can contribute their experience.

Methods and analysis
Participative Research for Individualised Care in Cardiovascular Diseases is a non-interventional, non-randomised, multicentre mixed-methods study. The aim is to incorporate patients’ insights into several key activities within iCARE4CVD by establishing country-specific patient panels in Belgium, Germany, Ireland and the UK. The primary objective is to identify patients’ preferences, experiences, requirements and needs for better diagnosis, treatment and self-care of CVD. Therefore, 10–12 patients across the CVD spectrum, from early risk to established CVD and heart failure, will be included in each country (40–48 in total). Over 3.5 years, patient panel members are required to complete four tasks: (1) identification of meaningful Patient-Reported Outcome and Experiences Measures, (2) development of a motivational model to increase adherence, (3) feedback on CVD care processes and (4) usability testing of new digital tools developed within iCARE4CVD. These tasks comprise eight activities in the form of paper-based or digital exercises, telephone surveys, written surveys and in-person focus groups. The results will be continuously incorporated into iCARE4CVD.

Ethics and dissemination
This study received ethical approval by the Ethics Committee at the Faculty of Medicine of RWTH Aachen University (EK 24-172) and St. Vincent’s University Hospital (RS24-027), Research Ethics Committee. In Geel and Belfast, positive ethics approval is pending. All participants will provide written informed consent prior to enrolment in the study and participation in the first patient panel task. Results will be published in peer-reviewed journals and presented at scientific conferences.

Trial registration number
DRKS00034899.

Protocol version
V2.1, 6 June 2024.

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Association of multiple symptoms with sleep quality and duration: a cross-sectional population-based study of older men in Sweden

Objective
To evaluate any association of the presence and severity of nine major symptoms (pain, tiredness, drowsiness, nausea, appetite, breathlessness, depression, anxiety, and perceived well-being) with sleep quality and duration in elderly men.

Design and setting
Cross-sectional analysis within the population-based VAScular and Chronic Obstructive Lung disease study (VASCOL) conducted in southern Sweden in 2019.

Participants
A total of 838 older men aged 73 years.

Measures
Severity of the symptoms was self-reported between 0 and 10 on a numerical rating scale. Breathlessness was also assessed using the Multidimensional Dyspnoea Profile and Dyspnoea-12. Sleep quality was reported on a 5-point Likert scale from ‘very well’ to ‘very bad’and sleep duration on a 7-point scale from ‘less than 4 hours’ to ‘more than 10 hours’. Associations of each symptom score with having worse sleep quality (‘bad’ or ‘very bad’) and/or shorter sleep duration (

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Efficacy of cashew nut protein immunotherapy: protocol for a single-centre randomised controlled trial in a Polish paediatric population

Introduction
The prevalence of food allergies, particularly IgE-mediated allergies, is rising in developed countries, with cashew nut allergy emerging as a significant public health concern due to its potential for severe anaphylaxis and frequent association with atopic disorders. Cashew nuts are among the most common allergens in Europe and Australia, often involving cosensitisation with pistachios, hazelnuts and other allergens. Diagnosis relies on clinical history, measurement of specific IgE (sIgE) levels, skin prick tests (SPT) and oral food challenges (OFCs). Current management strategies focus on allergen avoidance and emergency interventions, whereas oral immunotherapy (OIT) represents a promising approach to desensitisation. Recent studies, including the NUT CRACKER trial, have reported high desensitisation rates with cashew OIT, although these are associated with a risk of adverse events. This study introduces a novel randomised controlled trial aimed at evaluating the efficacy and safety of cashew immunotherapy in children.

Methods and analysis
This randomised, open-label, parallel-group trial, with a 2:1 allocation ratio, will be conducted at the Department of Paediatric Pneumology and Allergology, Medical University of Warsaw, Poland. Thirty-nine children, aged 4–17 years, with confirmed IgE-mediated cashew allergy via open OFC will be enrolled. Participants in the experimental group will undergo OIT, which involves gradually increasing doses of cashew protein up to a maintenance dose of 1200 mg. The duration of OIT will range from 12 to 60 weeks, depending on individual baseline tolerance. The control group will receive standard management, including strict cashew avoidance and emergency response strategies to accidental exposure, for 1 year.
The primary endpoint is to determine the proportion of participants tolerating a 4043 mg dose of cashew protein at the study’s end in the OIT group compared with the control group. Secondary outcomes include evaluating the safety profile of OIT, assessing changes in laboratory markers such as sIgE and IgG4 levels for cashew and the major cashew allergen Ana o 3, analysing basophil activation test responses and measuring changes in SPT wheal diameter at baseline and study completion.

Ethics and dissemination
The study has been approved by the Ethics Committee of the Medical University of Warsaw (approval number: KB/267/2023). Study findings will be published in peer-reviewed journals and presented at international conferences.

Trial registration number
NCT06328504.

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Azithromycin as adjunctive treatment for uncomplicated severe acute malnutrition (AMOUR): study protocol for a double-masked randomised controlled trial

Introduction
Amoxicillin is recommended for children with uncomplicated severe acute malnutrition (SAM). However, some trials have shown no difference in amoxicillin for nutritional recovery in children with SAM compared with placebo. In addition, amoxicillin treatment requires two times per day dosing for 7 days, which may influence adherence. Azithromycin is a broad-spectrum antibiotic that can be provided as a single dose and has reduced mortality in children aged 1–59 months when provided by mass drug administration. The AMOUR trial is designed to assess amoxicillin, azithromycin and placebo as part of outpatient treatment of uncomplicated SAM.

Methods and analysis
This double-masked randomised controlled trial will enrol 3000 children over 3 years in an individually randomised 1:1:1 allocation to azithromycin, amoxicillin or placebo arms and follow them for 12 months. Children eligible to enrol in the study will be aged 6–59 months and have uncomplicated non-oedematous SAM as defined by weight-for-height Z-score

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[Articles] Development of a World Health Organization indicator and corresponding questions to measure effective coverage of rehabilitation

We propose a global tracer indicator for measuring effective coverage of rehabilitation at the population level that is captured through population-based surveys. This global indicator uses chronic primary low back pain as the tracer health condition and World Health Organization Disability Assessment Schedule 2.0 12-item to assess whether quality interventions have been provided that produce the desired health gain.

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Protocol for a multicentre, open-label, dose-escalation phase I/II study evaluating the tolerability, safety, efficacy and pharmacokinetics of repeated continuous intravenous PPMX-T003 in patients with aggressive natural killer cell leukaemia

Introduction
Aggressive natural killer cell leukaemia (ANKL) is a rare form of NK cell lymphoma with a very low incidence and poor prognosis. While multi-agent chemotherapy including L-asparaginase has been used to treat ANKL patients, they often cannot receive adequate chemotherapy at diagnosis due to liver dysfunction. PPMX-T003, a fully human monoclonal antibody targeting the transferrin receptor 1, shows promise in treating ANKL by helping patients recover from fulminant clinical conditions, potentially enabling a transition to chemotherapy. This study aimed to evaluate the tolerability, safety, efficacy, and pharmacokinetics of repeated continuous intravenous PPMX-T003 in patients with ANKL.

Methods and analysis
This multicentre, open-label, dose-escalation phase I/II study will be conducted at nine hospitals in Japan. Patients diagnosed with ANKL (whether as a primary or recurrent disease) and exhibiting abnormal liver function or hepatomegaly due to the primary disease will be included. The primary endpoint is the tolerability and safety of repeated continuous intravenous administration of PPMX-T003 in the first course, based on adverse events and dose-limiting toxicities. PPMX-T003 will be administered as a continuous intravenous infusion every 24 hours for five consecutive days, followed by a 2-day break. Pretreatment will be provided to minimise the risk of infusion-related reactions. Initial doses of PPMX-T003 will be 0.5, 1.0 or 2.0 mg/kg, with subsequent dose increases determined by the Data and Safety Monitoring Committee. The sample size is set at seven participants, with enrolment increased to up to 12 participants if dose-limiting toxicities occur, based on feasibility due to the rarity of ANKL. Descriptive statistics will summarise data according to initial dose, and pharmacokinetic analysis will be conducted based on administered dose.

Ethics and dissemination
This study was approved by the institutional review boards at participating hospitals. The results will be disseminated in peer-reviewed journals.

Trial registration number
jRCT2061230008 (jRCT); NCT05863234 (ClinicalTrials.gov).

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Identifying and reporting modifications to surgical innovation: a systematic review of IDEAL/IDEAL-D studies

Objectives
The Idea, Development, Evaluation, Assessment and Long-term follow-up (IDEAL) framework was designed to improve the quality of surgical research and evaluation of surgical innovation. It has become a widely cited tool for evaluating innovative devices and procedures, yet challenges remain concerning the definition and reporting of incremental innovative modifications, hindering evolution and evaluation of innovations and potentially risking patient safety. This systematic review examined IDEAL studies to identify such modifications and establish recent practices around modification reporting to inform the development of future guidance to facilitate safe, transparent and efficient surgical innovation.

Design
Systematic review and thematic synthesis of studies reporting surgical innovation.

Data sources
Web of Science and Scopus were searched in July 2023 using citation tools to identify studies following the IDEAL framework (citing any of 13 key IDEAL/IDEAL framework publications and guideline papers).

Eligibility criteria
Primary research studies of any design that involved invasive innovative devices or procedures.

Data extraction and synthesis
Study characteristics and verbatim text for all reported modifications, including contextual information, were extracted. Data were analysed and synthesised using thematic synthesis.

Results
Of 1071 records screened, 104 studies published between 2011–2023 were included (n=87 (83.6%) study reports; n=17 (16.3%) protocols). 425 modifications were reported in 76 (73.1%) studies, including modifications to procedures (n=283, 66.6%), devices (n=94, 22.1%) and patient selection (n=48, 11.3%). Procedure/device modifications included technical, non-technical and cessation (conversion to other procedures or abandonment). Modifications were most often reported within IDEAL stage 2a (n=30/44, 68.2%), whereas there was considerable variation across other stages, such as stage 0 (n=2/3, 66%) and stage 2b (n=4/12, 33.3%).

Conclusion
Reporting modifications is imperative for evaluating surgical innovation. However, this review found inconsistent approaches to reporting and describing modifications. Findings will inform the development of a checklist for reporting modifications that aims to complement the IDEAL framework and further promote shared learning, avoiding the repetition of harmful/ineffective modifications and enhancing patient safety.

PROSPERO registration number
CRD42023427704.

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