Understanding preconception care: a scoping review of knowledge, attitudes and practices among reproductive age individuals, healthcare workers and stakeholders in low- and middle-income countries

Objectives
This scoping review aims to map existing evidence on knowledge, attitudes and practices (KAP) and barriers to preconception care in low- and middle-income countries. The primary objective is to identify key gaps and research priorities to guide future efforts to improve maternal and child health.

Design
This review followed Arksey and O’Malley’s scoping review framework, with a comprehensive search across Medline, EMBASE, CINAHL and Scopus from inception to May 2025. Eligible studies included original research on preconception care (PCC), KAP in low- and middle-income countries (LMICs) without date restrictions. Two independent reviewers conducted screening in Covidence. Findings were presented in graphical, tabular and narrative formats, adhering to the Preferred Reporting Items for Systematic Review and Meta-Analysis Protocols Extension for Scoping Reviews (PRISMA-ScR) standard.

Setting
The review focused on PCC studies conducted in LMICs across various healthcare settings, emphasising primary and secondary levels of care. The geographical scope was global but limited to LMICs as defined by World Bank criteria.

Result
A total of 62 studies were included in the review. Of these, 42 employed quantitative methods, 18 used qualitative approaches and 2 used a mixed-methods design. Regarding focus areas, 25 studies assessed knowledge, 14 assessed practices, 12 studies assessed KAP comprehensively and 10 assessed attitudes. Participants were mainly women of reproductive age (44 studies), with only five studies including men. Among healthcare providers, KAP varied, with midwives being the most frequently studied group. Stakeholders such as policymakers were notably under-represented. Identified barriers included limited training, cultural beliefs and inadequate policies. Facilitators highlighted were targeted education, spousal support and policy advocacy, emphasising the need for gender-sensitive and systemic interventions.

Conclusion
LMICs face complex challenges in utilising PCC, influenced by socioeconomic, cultural, and healthcare system factors. To address these challenges, nuanced approaches incorporating intersectional perspectives and practical qualitative methodologies are essential for improving couples’ and child health outcomes.

Trial registration number
The study protocol was registered in the Open Science Framework (OSF) on December 23, 2022, with DOI: 10.17605/OSF.IO/H3MK6.

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Predictive accuracy of ophthalmic artery Doppler for pre-eclampsia: a systematic review

Objectives
This systematic review investigated available evidence on the stand-alone and incremental predictive performance of ophthalmic artery Doppler (OAD) for pre-eclampsia.

Design
Systematic review.

Data sources
We conducted a literature search from PubMed (Medline), the Cochrane CENTRAL, EMBASE and Scopus from inception to 8 April 2025.

Eligibility criteria
Studies eligible for inclusion were prospective or retrospective cohort studies, case-control studies or randomised controlled trials that reported on the predictive performance of OAD for pre-eclampsia in singleton pregnancies; and conducted in either high-income country (HIC) or low- and middle-income country (LMIC).

Data extraction and synthesis
Two reviewers independently screened and assessed articles for inclusion. One reviewer then extracted data using a standardised data extraction sheet, and any uncertainties were discussed with a second reviewer. The Prediction model Risk of Bias Assessment Tool was used for quality and risk of bias assessment. Findings were summarised and reported according to the Preferred Reporting Items for Systematic Review and Meta-Analyses statement and synthesised qualitatively.

Results
We identified and included 11 observational studies (3 from HIC and 8 from LMICs) with a total of 12 150 singleton pregnancies, of which 517 (4.3%) were complicated by pre-eclampsia at end of follow-up. The included studies were of varied quality, with three at low risk of bias, four at unclear risk and four at high risk. No interventional study was identified. Three studies (27.3%) recruited high-risk pregnancies (defined according to the American College of Obstetricians and Gynecologists (ACOG) criteria as one or more of the following: chronic hypertension, personal or family history of pre-eclampsia, early (≤18 years) or late (≥40 years) first pregnancy, primipaternity, chronic kidney disease, increased body mass index >30 kg/m2, presence of diabetes mellitus prior to pregnancy, autoimmune disease and thrombophilia), while eight studies (72.7%) recruited undetermined risk pregnancies. Stand-alone performance of OAD (interpreted by area under the receiver operating curve at 95% CI) showed that in the first trimester, the peak systolic velocity (PSV) ratio demonstrated very good predictive ability (0.97, 95% CI 0.92 to 1.0) (n=1 study), and the second PSV (PSV2) demonstrated very good predictive ability (0.91, 95% CI 0.82 to 0.99) (n=1 study). Also, PSV2 demonstrated fair predictive ability (0.61, 95% CI 0.42 to 0.79; and 0.53, 95% CI 0.40 to 0.66) for early and late pre-eclampsia, respectively (n=1 study). In the second trimester, the PSV ratio demonstrated very good predictive ability (0.88, 95% CI 0.84 to 0.91) (n=1 study), and PSV2 demonstrated good predictive ability (0.73, 95% CI 0.66 to 0.81; and 0.76, 95% CI 0.71 to 0.81) for pre-eclampsia (n=2 studies). In the third trimester, the PSV ratio demonstrated good predictive ability (0.82, 95% CI 0.73 to 0.89; and 0.77, 95% CI 0.71 to 0.82) for preterm and term pre-eclampsia, respectively (n=1 study). Also, PSV2 demonstrated good predictive ability 0.70 (0.57 to 0.84) (n=1 study).
Subsequently, in the second trimester, PSV ratio demonstrated better incremental predictive performance than uterine artery pulsatility index for preterm pre-eclampsia, when added to maternal factors and mean arterial pressure (MAP) (56.1%–80.2% vs 56.1%–74.8% detection rate (DR) at 10% FPR) (n=1 study). Also in the third trimester, adding PSV ratio to maternal factors and MAP was superior to soluble fms-like tyrosine kinase-1/placental growth factor ratio in predicting pre-eclampsia at

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Yoga for older adults with multimorbidity: teaching insights for optimising participant safety and inclusion from the process evaluation of the Gentle Years Yoga trial

Objectives
To develop a teaching exemplar for optimising the safe and accessible delivery of chair-based yoga to multimorbid older adult populations.

Design
A qualitative process evaluation embedded within the multi-site, randomised controlled Gentle Years Yoga trial for older adults (65+ years) with two or more long-term health conditions (trial status: completed).

Setting
Online and face-to-face interviews were conducted with participants and yoga teachers involved in the 12-week chair-based yoga intervention. Interview data were supplemented with observations of in-person and online yoga class delivery.

Participants
All yoga teachers delivering the yoga intervention were invited to take part in the interviews, together with a subsample of participants receiving the yoga intervention. Participants were purposively selected to represent the trial cohort demographics of gender, age, ethnicity, index of multiple deprivation, and number and intensity of chronic health conditions.

Results
25 yoga participants and 11 yoga teachers took part in one (N=19) or two (N=17) interviews. Participants were aged 66–91 years (mean age 74 years), with 2–8 long-term health conditions, most commonly osteoarthritis (N=15, 60%), cardiovascular disease (N=14, 56%), sensory conditions (N=9, 36%) and depression or anxiety (N=8, 32%). Yoga teachers were predominantly female (N=10, 91%), with 4–35 years yoga teaching experience across multiple yoga styles. Feedback from yoga teachers and participants was classified into six categories, generating a 21-item teaching exemplar. These covered aspects of delivery including class size and delivery formats, choosing appropriate physical content, enhancing inclusivity of personal beliefs through non-physical content, proactive teaching styles, communication tips and ways to boost visibility.

Conclusions
This 21-item list adds to the current educational base of yoga for older adults. Addressing both face-to-face and online class formats, this exemplar offers pragmatic guidance for yoga teachers to enhance the safe and accessible delivery of chair-based yoga to older adults and multimorbid populations.

Trial registration number
ISRCTN13567538.

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Effect of aerobic exercise combined with meditation on cognitive frailty: study protocol for a parallel group randomised controlled trial

Introduction
Cognitive frailty (CF) is a clinical syndrome characterised by the concurrent occurrence of physical frailty and cognitive impairment, excluding Alzheimer’s disease and other forms of dementia. Recent studies have shown that combining aerobic exercise (AE) and meditation (ME) effectively enhances both physical and cognitive functions in individuals with CF. The study aims to determine whether the combined application of AE and ME can elicit significantly greater improvements in physical and cognitive functions among individuals with CF compared with the independent practice of either AE or ME alone.

Methods and analysis
The research design employs a four-arm, assessor-blind randomised controlled trial. A total of 140 qualified subjects will be randomly allocated among four groups: AE, ME, AE combined with ME and a health education control group, ensuring equivalent distribution across groups. The intervention phase of the study will last for 12 weeks. The primary outcomes will include the Edmonton Frailty Scale, while secondary outcomes will encompass evaluations of cognitive functions (including global cognitive function, memory, attention, executive function and visuospatial abilities), physical performance (measured by gait speed and lower extremity strength), subjective experiences (such as fatigue, quality of life, mindfulness, mood and sleep quality), as well as structural and functional MRI assessments and serum biomarkers. Outcomes will be evaluated at baseline and following the 12-week intervention.

Ethics and dissemination
The Ethics Committee of the Affiliated Rehabilitation Hospital of the Fujian University of Traditional Chinese Medicine granted ethical approval for the study (2023KY-012–02). The findings will be disseminated through publications in peer-reviewed journals and presentations at academic conferences.

Trial registration number
ChiCTR2300073563.

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Association of Covert Cerebrovascular Disease With Falls Requiring Medical Attention

Stroke, Ahead of Print. BACKGROUND:The impact of covert cerebrovascular disease on falls in the general population is not well-known. Here, we determine the time to a first fall following incidentally detected covert cerebrovascular disease during a clinical neuroimaging episode.METHODS:This longitudinal cohort study assessed computed tomography (CT) and magnetic resonance imaging from 2009 to 2019 of patients aged >50 years registered with Kaiser Permanente Southern California which is a healthcare organization combining health plan coverage with coordinated medical services, excluding those with before stroke/dementia. We extracted evidence of incidental covert brain infarcts (CBI) and white matter hyperintensities/hypoattenuation (WMH) from imaging reports using natural language processing. We examined associations of CBI and WMH with falls requiring medical attention, using Cox proportional hazards regression models with adjustment for 12 variables including age, sex, ethnicity multimorbidity, polypharmacy, and incontinence.RESULTS:We assessed 241 050 patients, mean age 64.9 (SD, 10.42) years, 61.3% female, detecting covert cerebrovascular disease in 31.1% over a mean follow-up duration of 3.04 years. A recorded fall occurred in 21.2% (51 239/241 050) during follow-up. On CT, single fall incidence rate/1000 person-years (p-y) was highest in individuals with both CBI and WMH on CT (129.3 falls/1000 p-y [95% CI, 123.4–135.5]), followed by WMH (109.9 falls/1000 p-y [108.0–111.9]). On magnetic resonance imaging, the incidence rate was the highest with both CBI and WMH (76.3 falls/1000 p-y [95% CI, 69.7–83.2]), followed by CBI (71.4 falls/1000 p-y [95% CI, 65.9–77.2]). The adjusted hazard ratio for single index fall in individuals with CBI on CT was 1.13 (95% CI, 1.09–1.17); versus magnetic resonance imaging 1.17 (95% CI, 1.08–1.27). On CT, the risk for single index fall incrementally increased for mild (1.37 [95% CI, 1.32–1.43]), moderate (1.57 [95% CI, 1.48–1.67]), or severe WMH (1.57 [95% CI, 1.45–1.70]). On magnetic resonance imaging, index fall risk similarly increased with increasing WMH severity: mild (1.11 [95% CI, 1.07–1.17]), moderate (1.21 [95% CI, 1.13–1.28]), and severe WMH (1.34 [95% CI, 1.22–1.46]).CONCLUSIONS:In a large population with neuroimaging, CBI and WMH are independently associated with greater risks of an index fall. Increasing severities of WMH are associated incrementally with fall risk across imaging modalities.

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Selective neoadjuvant therapy of rectal cancer patients (SELREC): study protocol for a European randomised controlled, open, multicentre non-inferiority trial

Introduction
Neoadjuvant (chemo)radiotherapy (n(C)RT) followed by resection with total mesorectal excision (TME) constitutes the standard treatment for patients with locally advanced rectal cancer of the middle and lower third. However, n(C)RT has demonstrated no significant impact on overall survival but is associated with adverse effects, including impaired sphincter and sexual function. We hypothesise that omitting n(C)RT in selected patients with a clear circumferential resection margin (CRM) >1 mm as determined through preoperative MRI is not inferior regarding local recurrence rate within 3 years after surgery. That treatment approach may show fewer adverse effects and be more cost-effective.

Methods and analysis
Selective neoadjuvant therapy of rectal cancer patients (SELREC) is a randomised controlled, parallel-group, open, multicentre, non-inferiority trial. The experimental intervention involves performing TME surgery without n(C)RT. In contrast, the control intervention adheres to German S3-guidelines, incorporating neoadjuvant radiotherapy (nRT) with a dosage of 5×5 Gy or a total of 50.4 Gy. Additionally, if applicable, concomitant chemotherapy (CT) based on 5-fluorouracil is administered, followed by TME surgery within less than 12 weeks. Adjuvant treatment according to guidelines is allowed depending on the (y)pTNM stage.
The inclusion criteria for this study encompass adult patients with primary adenocarcinoma of the rectum in whom the main tumour mass is located less than 12 cm away from the anal verge, as assessed via proctoscopy. Additionally, eligible participants are required to have a preoperative tumour stage determined by MRI of either T1 or T2 with lymph node involvement (N1) or T3 with no lymph node involvement (N0) or with lymph node involvement (N1) and no distant metastases (M0). The assessment of a clear CRM >1 mm, based on MRI, is another prerequisite for inclusion. A total of 1074 patients in approximately 35 centres are planned to be allocated to the trial.
The primary endpoint of the trial is local recurrence within 3 years after surgery. The primary estimand is based on the full analysis set using a logistic mixed model (margin 3%). The first secondary endpoint is no/minor low anterior resection syndrome (LARS) score at 2 years after surgery, and further secondary endpoints include survival outcomes and quality of life. Safety analysis involves describing the frequencies of major intervention-specific complications, such as the acute toxicity of n(C)RT according to CTCAE and perioperative morbidity and mortality according to Clavien-Dindo criteria.
SELREC is financially supported by the German Federal Ministry of Education and Research.

Ethics and dissemination
This trial has been prospectively registered in the German Clinical Trials Register.
Previously, the study had been approved by the responsible ethics committee of Heidelberg and the local ethics committees of the collaborating institutions before patient enrolment. Any protocol deviation that has an impact on relevant parameters such as study design, endpoints or patient safety will be reported to the responsible ethics committees.
The results will be published in a peer-reviewed scientific journal and on institutional websites.

Trial registration number
German Clinical Trials Register DRKS00030567.

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Efficacy and safety of musculoskeletal manipulations in elderly population with musculoskeletal disorders: a systematic review

Introduction
Non-pharmacological interventions, including musculoskeletal manipulations (MMs), have been proven effective for musculoskeletal disorders.

Objectives
To evaluate if MMs, including osteopathic manipulation and chiropractic care, are effective to improve quality of life, pain intensity and function in older adults with musculoskeletal disorders.

Design
Systematic review.

Data sources
A systematic search was conducted on MEDLINE/PubMed, EMBASE, Scopus, Web of Science, CINAHL, Cochrane Library, from database inception up to 2 January 2025.

Eligibility criteria
Randomised controlled trials, controlled non-randomised trials and open label trials evaluating the efficacy and safety of MM such as osteopathic manipulation, chiropractic manipulation, myofascial release, craniosacral therapy, as monotherapy or adjunctive therapies in older people (age ≥65 years) with musculoskeletal disorders. The main outcomes included pain intensity, functionality and quality of life. Additionally, other related outcomes were considered, such as medical use duration, mood, mobility, motion, strength and endurance. Finally, we considered any adverse events.

Data extraction and synthesis
Selection and data extraction were performed independently by two authors. The effect estimates for each study were performed using Review Manager V.5.14. Continuous outcomes were analysed using the mean difference (95% CI). The methodological quality of the included studies was assessed using the Cochrane Risk of Bias tool 2 (RoB 2). No meta-analysis was performed.

Results
Five parallel randomised controlled trials were included, with a total sample size of 676 participants (41.6% women with a mean age of 77.3 years): 34 with chronic pain, 265 with neck pain and 377 with low back pain. MMs were not effective in patients with chronic pain, neither in pain intensity nor in functionality. For neck pain, considering the main outcomes, only in one of the two studies was there a statistically significant improvement in neck pain intensity only at week 12 for spinal manipulative treatment (SMT)+home exercise (HE) compared with HE alone (ES=–0.90 (95% CI –1.46 to –0.34); p=0.002). For low back pain, SMT+HE showed a statistically significant reduction in pain at 12 weeks compared with HE (ES=–0.79 (95% CI –1.39 to –0.19) p=0.010. For neck pain and low back pain, no statistically significant improvement in functional status and quality of life was observed with MM compared with any control group. RoB 2 showed a high risk of bias in three studies and some concerns in the others. At the domain level, the lowest risk was observed in the randomisation process (80% with some concerns). All five studies reported adverse events, none of which were serious.

Conclusions
This review provides limited and inconclusive evidence about MM to improve quality of life, pain management and functional status in older adults with musculoskeletal disorders. However, MM appears to be generally safe and well-tolerated.

PROSPERO registration number
CRD42023473203.

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Effect of acupuncture on endometrial receptivity in women with thin endometrium: study protocol for a single-centre, randomised, sham-controlled trial

Introduction
Thin endometrium poses a major therapeutic challenge in assisted reproductive technologies by compromising pregnancy success and live birth outcomes. A substantial proportion of patients remain refractory to existing therapies. Preliminary evidence suggests acupuncture may improve endometrial thickness (EMT). This study aims to assess the effect of acupuncture against sham acupuncture for women with thin endometrium.

Methods and analysis
This study is a single-centre, randomised, sham-controlled trial conducted at a specialised acupuncture hospital in Beijing, China. A total of 120 women with thin endometrium will be randomised (1:1) to receive 36 sessions of acupuncture or sham acupuncture over 12 weeks. The primary outcome is the EMT at week 12. Secondary outcomes are endometrial pattern, uterine arterial blood flow parameters (Pulsatility Index, Resistance Index and the ratio of peak systolic to end-diastolic blood flow velocities), endometrium blood flow, serum oestradiol concentration, clinical pregnancy rate and Self-Rating Anxiety Scale Scores.

Ethics and dissemination
This study has been approved by the ethics committee of the Institute of Acupuncture and Moxibustion, China Academy of Chinese Medical Sciences (approval no.: S2024-04-23-1). Each participant will be required to provide written informed consent before enrolment. Findings will be disseminated through peer-reviewed publications and conference presentations.

Trial registration number
ITMCTR2024000053.

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Background rates of medical events of interest before and during the COVID-19 pandemic: a longitudinal cohort study using claims data

Importance
Background rates are critical for contextualising safety signals arising from COVID-19-related interventions in investigational or real-world settings.

Objective
To estimate background rates of medical events of interest (MEI) for which COVID-19 infection and/or COVID-19 interventions may be risk factors in two US claims databases.

Design, setting and participants
This retrospective cohort study spans the pre-COVID-19 (2018–2019) and COVID-19 (2020–2021) periods. We constructed three cohorts, in each of Inovalon/HealthVerity (Inovalon/HV) and Optum databases: a COVID-19-positive adult cohort (2020–2021), a paediatric cohort (2018–2021) and a high-risk cohort (2018–2021) comprising patients at increased risk for severe COVID-19. Participants were indexed on the day they first qualified to enter each cohort during the study period. Background rates of 17 MEI were estimated per 1000 person-years (PY) with 95% CIs.

Main outcomes and measures
Annual incidence rates (IRs) of 17 MEI.

Results
Overall, 758 414 (COVID-19-positive adults; 57.8% women), 12 513 664 (high-risk adults; 56.8% women) and 8 510 627 (paediatric patients; 49.1% women) patients were identified in the HV database. IRs of MEI varied substantially by year, data source, study cohort and duration of follow-up. The IRs of MEI were highest among COVID-19-positive adults and lowest among paediatric patients. For example, IR of myocarditis/pericarditis per 1000 PY was 3.0 (95% CI: 2.6 to 3.4) in the COVID-19-positive adult cohort vs 0.36 (95% CI: 0.34 to 0.37) among high-risk adults and 0.05 (95% CI: 0.05 to 0.06) among paediatric patients. In the COVID-19-positive adult cohort, we observed higher IRs during 90-day follow-up (eg, IR of acute myocardial infarction (AMI) 26.5 (95% CI: 25.3 to 27.7)) vs 365-day follow-up (eg, IR of AMI 20.0 (95% CI: 9.2 to 20.8)) and during 2020 compared with 2021. IRs were higher in the high-risk adult and paediatric populations during the pre-COVID-19 period than during the COVID-19 pandemic.

Conclusions
Substantial variability was observed in IRs of MEI by study cohort, year, data source and follow-up duration. When generating background rates for contextualising safety signals from COVID-19 interventions, careful consideration must be given to the indicated subpopulation of interest, COVID-19-related temporal variations and data sources.

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Challenges and facilitators in pathways to cancer diagnosis in Southern Africa: a qualitative study

Objectives
To explore healthcare workers’ (HCWs) experiences, barriers and facilitators in managing patients with symptoms of possible breast, cervical or colorectal cancer.

Design
A qualitative in-depth interview study with HCWs managing patients with breast, cervical and colorectal cancer symptoms. We also conducted workshops with a group of HCWs to check the credibility of the interview findings.

Setting
The study was conducted with staff working in primary, secondary and tertiary public health facilities in the Eastern and Western Cape in South Africa (SA), and Harare and Bulawayo and their referral provinces in Zimbabwe.

Participants
HCWs with experience in managing patients with symptoms of possible breast, cervical or colorectal cancer were recruited for the study. Participants were purposively sampled based on region, healthcare level and job role. A total of 56 participants (26 in SA and 30 in Zimbabwe) participated in the in-depth interviews. 26 (12 in SA and 14 in Zimbabwe) participated in four clinical advisory group workshops across both countries.

Results
Drawing on the Model of Pathways to Treatment, HCWs’ perceptions of patient-level factors influencing the diagnostic interval included financial limitations, patients’ absence and delays in attendance. Healthcare provider and system factors included: challenges with referral and feedback systems; training needs; low awareness of protocols and guidelines; inappropriate and suboptimal clinical assessments; and broader socioeconomic factors and resource limitations.

Conclusion
Improving the timely diagnosis of breast, cervical and colorectal cancer in Southern Africa necessitates targeted strategies that address both patient-related, provider and health-system delays.

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Randomised waitlist-controlled trial of a 10-week community programme using a plant-based diet in a predominantly Maori population in Tairawhiti (Gisborne)

Objectives
Investigate the impact of a 10-week whole-food plant-based (WFPB) community programme on weight and type 2 diabetes up to 36 months postintervention.

Design
Randomised waitlist-controlled trial.

Setting
Community-based General Practice clinic classified as ‘Very Low-Cost Access’ in Gisborne, the main city of the Tairāwhiti region of New Zealand.

Participants
Adults (n=56) aged 30–72 years, with obesity (Body Mass Index (BMI) ≥30) and glycated haemoglobin (HbA1c≥40 mmol/mol) in the last 6 months. Of the participants, 59% identified as Māori and 5% as Pasifika.

Intervention
A 10-week programme consisting of 2 hours, two times per week sessions (40 hours total), involving skills-based learning and health education.

Primary and secondary outcome measures
Primary measures were changes in weight, BMI and HbA1c. Secondary measures included changes in cholesterol, waist circumference, exercise levels, plant-based and non-plant-based dietary scores and association with Big Five Inventory personality traits. The primary endpoint was assessed at post-treatment (10 weeks), with follow-up at 6 and 36 months postintervention.

Results
Differences between the intervention and waitlist control groups at 10 weeks were compared with independent samples t-tests. In intention-to-treat analyses, the intervention group demonstrated significantly greater weight loss of 3.3 kg (95% CI (0.8 to 5.7), p

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Comparing non-ischaemic heart preservation (NIHP) with ischaemic static cold storage of donor hearts in adult cardiac transplantation: study protocol for a randomised controlled trial

Introduction
Ischaemia–reperfusion (I/R) injury remains a major challenge in heart transplantation, with mortality risk increasing significantly when allograft ischaemic time exceeds 4 hours. Non-ischaemic heart preservation (NIHP), using continuous hypothermic perfusion, has shown promise in preliminary studies for reducing I/R injury and improving outcomes. This randomised controlled trial aims to compare NIHP with standard static cold storage (SCS) in adult heart transplantation.

Methods and analysis
The trial is a prospective, open-label, multicentre, single-blinded, randomised controlled trial including 66 adult heart transplant recipients across four Swedish hospitals. Participants will be randomised into 1:1 ratio to NIHP or SCS preservation groups and undergo a 12-month follow-up period. The primary outcome is 1-year survival free from acute cellular rejection or retransplantation. Secondary outcomes include quality of life, I/R injury markers, graft function and adverse events. Substudies will evaluate renal function using MRI and continuously monitor physical activity and heart rhythm via wearable devices. Analysis will follow intention-to-treat principles, with time-to-event analysis using Cox proportional hazard models and Kaplan-Meier estimates.

Ethics and dissemination
The study has been approved by the Swedish Ethical Review Authority. It will be conducted according to the Declaration of Helsinki and relevant local and international regulations. Results will be published in peer-reviewed journals following Consolidated Standards of Reporting Trials guidelines.

Trial registration number
NCT04066127.

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What drives clinic follow-up after traumatic spinal injury? An observational cohort study from Tanzania

Objectives
To evaluate factors associated with clinic follow-up after traumatic spinal injury (TSI) in Tanzania, focusing on demographic, injury-related and hospital variables. We hypothesised that socioeconomic and injury-specific factors would predict follow-up adherence.

Design
Retrospective observational cohort study.

Setting
Tertiary government referral centre for neurosurgery and orthopaedics in Dar es Salaam, Tanzania.

Participants
443 adults with TSI admitted between September 2016 and October 2021. Inclusion criteria included survival to discharge and availability of the discharge date. Patients with missing data were excluded.

Primary and secondary outcome measures
Primary outcomes were any clinic follow-up and 1-year follow-up post-discharge. Secondary outcome was time to loss of follow-up. Logistic regression was used to identify factors associated with follow-up, and Kaplan-Meier survival analysis assessed follow-up duration.

Results
Of 443 patients (85.8% male, median age 34 years), 52.4% returned for follow-up. Independent factors associated with return included private insurance (adjusted OR (aOR) 2.69, 95% CI 1.38 to 5.45, p=0.005), involvement in a road traffic accident (aOR 2.15, 95% CI 1.22 to 3.83, p=0.009), lumbar injuries (aOR 2.26, 95% CI 1.30 to 4.00, p=0.004), neurological improvement at discharge (aOR 3.52, 95% CI 1.72 to 7.64, p=0.001) and hospital stays shorter than 24 days (aOR 1.63, 95% CI 1.07 to 2.47, p=0.022). Among those who returned, only 25.4% completed 1 year of follow-up. Predictors of 1-year follow-up included being female (aOR 4.87, 95% CI 2.31 to 10.56, p

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