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Randomised controlled, patient-blinded, multicentre, superiority trial to evaluate the efficacy of the line-attached sheath-type traction device for endoscopic submucosal dissection in patients with superficial gastric neoplasms

Por: Abe · H. · Sako · T. · Yamamoto · Y. · Ikeda · A. · Kawara · F. · Ose · T. · Takao · T. · Kitamura · Y. · Ariyoshi · R. · Morita · Y. · Ishida · T. · Ikegawa · T. · Ishida · R. · Yoshizaki · T. · Sakaguchi · H. · Toyonaga · T. · Kodama · Y.
Introduction

EndoTrac is a line-attached sheath-type traction device that enables us to control the direction and the force of traction during endoscopic submucosal dissection (ESD). The efficacy of EndoTrac for gastric ESD has not been fully verified.

Methods and analysis

The G-Trac study is a multicentre (nine general hospitals and two university hospitals in Japan) collaborative trial assessing the efficacy of EndoTrac for gastric ESDs. Patients with superficial gastric neoplasms will be enrolled and randomly assigned to undergo either conventional ESD or EndoTrac ESD. Allocation will be stratified according to tumour location, operator experience and tumour diameter at an allocation rate of 1:1. The type of endoknife used will be confirmed before randomisation. The primary outcome, procedure time, will be compared between the groups in both intention-to-treat and per-protocol analyses using the Wilcoxon rank sum test. The efficacy-related, safety-related and device-related outcomes will be assessed in the secondary analysis. The planned sample size of the 142 patients in the two groups will enable us to detect a difference with a power of 80% by using the Wilcoxon rank sum test, assuming an effect size of 0.54, asymptotic relative efficiency of 0.864 and a two-sided type 1 error rate of 5%.

Ethics and dissemination

This trial was approved by the certified review board of Kobe University (22 December 2022). The results from this trial will be disseminated through peer-review journals, presentations at national and international conferences, and data sharing with other researchers.

Trial registration number

jRCT1052220166.

Literature review and protocol for a prospective multicentre cohort study on multimodal prediction of seizure recurrence after unprovoked first seizure

Por: Beattie · B. C. · Batista Garcia-Ramo · K. · Biggs · K. · Boisse Lomax · L. · Brien · D. C. · Gallivan · J. P. · Ikeda · K. · Schmidt · M. · Shukla · G. · Whatley · B. · Woodroffe · S. · Omisade · A. · Winston · G. P.
Introduction

Epilepsy is a common neurological disorder characterised by recurrent seizures. Almost half of patients who have an unprovoked first seizure (UFS) have additional seizures and develop epilepsy. No current predictive models exist to determine who has a higher risk of recurrence to guide treatment. Emerging evidence suggests alterations in cognition, mood and brain connectivity exist in the population with UFS. Baseline evaluations of these factors following a UFS will enable the development of the first multimodal biomarker-based predictive model of seizure recurrence in adults with UFS.

Methods and analysis

200 patients and 75 matched healthy controls (aged 18–65) from the Kingston and Halifax First Seizure Clinics will undergo neuropsychological assessments, structural and functional MRI, and electroencephalography. Seizure recurrence will be assessed prospectively. Regular follow-ups will occur at 3, 6, 9 and 12 months to monitor recurrence. Comparisons will be made between patients with UFS and healthy control groups, as well as between patients with and without seizure recurrence at follow-up. A multimodal machine-learning model will be trained to predict seizure recurrence at 12 months.

Ethics and dissemination

This study was approved by the Health Sciences and Affiliated Teaching Hospitals Research Ethics Board at Queen’s University (DMED-2681-22) and the Nova Scotia Research Ethics Board (1028519). It is supported by the Canadian Institutes of Health Research (PJT-183906). Findings will be presented at national and international conferences, published in peer-reviewed journals and presented to the public via patient support organisation newsletters and talks.

Trial registration number

NCT05724719.

Morphological and ultrastructural investigation of the posterior atlanto-occipital membrane: Comparing children with Chiari malformation type I and controls

by Vijay M. Ravindra, Lorraina Robinson, Hailey Jensen, Elena Kurudza, Evan Joyce, Allison Ludwick, Russell Telford, Osama Youssef, Justin Ryan, Robert J. Bollo, Rajiv R. Iyer, John R. W. Kestle, Samuel H. Cheshier, Daniel S. Ikeda, Qinwen Mao, Douglas L. Brockmeyer

Introduction

The fibrous posterior atlanto-occipital membrane (PAOM) at the craniocervical junction is typically removed during decompression surgery for Chiari malformation type I (CM-I); however, its importance and ultrastructural architecture have not been investigated in children. We hypothesized that there are structural differences in the PAOM of patients with CM-I and those without.

Methods

In this prospective study, blinded pathological analysis was performed on PAOM specimens from children who had surgery for CM-I and children who had surgery for posterior fossa tumors (controls). Clinical and radiographic data were collected. Statistical analysis included comparisons between the CM-I and control cohorts and correlations with imaging measures.

Results

A total of 35 children (mean age at surgery 10.7 years; 94.3% white) with viable specimens for evaluation were enrolled: 24 with CM-I and 11 controls. There were no statistical demographic differences between the two cohorts. Four children had a family history of CM-I and five had a syndromic condition. The cohorts had similar measurements of tonsillar descent, syringomyelia, basion to C2, and condylar-to-C2 vertical axis (all p>0.05). The clival-axial angle was lower in patients with CM-I (138.1 vs. 149.3 degrees, p = 0.016). Morphologically, the PAOM demonstrated statistically higher proportions of disorganized architecture in patients with CM-I (75.0% vs. 36.4%, p = 0.012). There were no differences in PAOM fat, elastin, or collagen percentages overall and no differences in imaging or ultrastructural findings between male and female patients. Posterior fossa volume was lower in children with CM-I (163,234 mm3 vs. 218,305 mm3, p Conclusions

In patients with CM-I, the PAOM demonstrates disorganized architecture compared with that of control patients. This likely represents an anatomic adaptation in the presence of CM-I rather than a pathologic contribution.

Cost-effectiveness of occupational therapy for older adults: a protocol for an updated systematic review

Por: Kaneko · T. · Nagayama · H. · Ikeda · K. · Nakamura · T. · Niimi · A. · Inoue · N. · Takeda · T. · Uchida · J.
Introduction

The ageing populations in developed countries are a global concern, with increasing numbers of older adults facing physical, cognitive and psychological challenges, resulting in reduced quality of life and higher healthcare costs. Healthcare expenditure worldwide has been on the rise, especially among older adults, emphasising the importance of enabling independent living while reducing healthcare costs. Occupational therapy holds promising outcomes in promoting functional independence and enhancing the quality of life for older adults, but research on its cost-effectiveness remains limited. This systematic review aims to evaluate the recent evidence on the cost-effectiveness of occupational therapy interventions for older adults from a pragmatic perspective.

Methods and analysis

This systematic review will cover full economic evaluations, including cost-effectiveness, cost-utility and cost–benefit analyses, by reviewing randomised and cluster randomised controlled trials. The participants will be aged over 65 years without disease or disability restrictions. Primary outcomes will be assessed using functional status and quality-of-life assessments. Studies published before July 2023 will be searched in PubMed, Web of Science and Cumulative Index to Nursing and Allied Health Literature (CINAHL) databases, with no language restrictions.

Ethics and dissemination

Ethical approval is not required for this literature-based systematic review. The study’s findings will update the evaluation of occupational therapy’s cost-effectiveness in older adults and will be made public by publishing them in scholarly journals.

PROSPERO registration number

CRD42023453558.

Understanding the patterns and health impact of indoor air pollutant exposures in Bradford, UK: a study protocol

Por: Ikeda · E. · Hamilton · J. · Wood · C. · Chatzidiakou · L. · Warburton · T. · Ruangkanit · A. · Shao · Y. · Genes · D. · Waiblinger · D. · Yang · T. C. · Giorio · C. · McFiggans · G. · O'Meara · S. P. · Edwards · P. · Bates · E. · Shaw · D. R. · Jones · R. L. · Carslaw · N. · McEachan · R.
Introduction

Relative to outdoor air pollution, there is little evidence examining the composition and concentrations of indoor air pollution and its associated health impacts. The INGENIOUS project aims to provide the comprehensive understanding of indoor air pollution in UK homes.

Methods and analysis

‘Real Home Assessment’ is a cross-sectional, multimethod study within INGENIOUS. This study monitors indoor air pollutants over 2 weeks using low-cost sensors placed in three rooms in 300 Born in Bradford (BiB) households. Building audits are completed by researchers, and participants are asked to complete a home survey and a health and behaviour questionnaire, in addition to recording household activities and health symptoms on at least 1 weekday and 1 weekend day. A subsample of 150 households will receive more intensive measurements of volatile organic compound and particulate matter for 3 days. Qualitative interviews conducted with 30 participants will identify key barriers and enablers of effective ventilation practices. Outdoor air pollution is measured in 14 locations across Bradford to explore relationships between indoor and outdoor air quality. Data will be analysed to explore total concentrations of indoor air pollutants, how these vary with building characteristics, and whether they are related to health symptoms. Interviews will be analysed through content and thematic analysis.

Ethics and dissemination

Ethical approval has been obtained from the NHS Health Research Authority Yorkshire and the Humber (Bradford Leeds) Research Ethics Committee (22/YH/0288). We will disseminate findings using our websites, social media, publications and conferences. Data will be open access through the BiB, the Open Science Framework and the UK Data Service.

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