To evaluate the effectiveness of levosimendan in promoting weaning from veno-arterial extracorporeal membrane oxygenation (VA-ECMO) in patients with refractory cardiogenic shock through a meta-analysis of clinical trials.

Systematic review and meta-analysis.

PubMed, Embase, the Cochrane Library and Web of Science were systematically searched from inception to January 2025.

Studies were included if they were clinical trials comparing outcomes between patients receiving levosimendan and those not receiving it during VA-ECMO support. Eligible studies reported on at least one of the predefined outcomes.

Two independent reviewers extracted data and assessed study quality. The primary outcome was successful VA-ECMO weaning. Secondary outcomes included 30-day mortality, in-hospital mortality, duration of ECMO support and length of stay in the intensive care unit (ICU). A random-effects model was used to synthesise data and estimate pooled effect sizes, with heterogeneity assessed using the I² statistic.

Involving 2083 patients across 16 studies, levosimendan significantly improved VA-ECMO weaning success (OR=2.44, 95% CI: 1.72 to 3.48; p2=57%) compared with the control group. Additionally, it notably reduced 30-day mortality (OR=0.48, 95% CI: 0.29 to 0.81; p=0.006; I²=56%) and in-hospital mortality (OR=0.47, 95% CI: 0.26 to 0.88; p=0.02; I²=70%). Noteworthy, however, is the association of levosimendan with prolonged VA-ECMO support (days; n=1314; weighted mean difference (WMD): 2.86, 95% CI: 1.73 to 4.00; p2=60%) and extended ICU stay (days; n=629; WMD: 5.69, 95% CI: 2.19 to 9.20; p=0.001; I²=61%).

Levosimendan improves VA-ECMO weaning success and reduces mortality. Further high-quality randomised controlled trials (RCTs) are required to confirm its clinical benefits in VA-ECMO patients. While the findings consolidate existing evidence favouring levosimendan, they also highlight residual heterogeneity and moderate-to-high risk of bias in several included studies. Therefore, future investigations, particularly well-powered RCTs with robust methodology, may help further delineate its role in specific patient populations.

To investigate the correlation between fat-to-muscle ratio (FMR) or other body composition and secondary osteoporosis (OP) in patients with rheumatoid arthritis (RA) and to develop a predictive model using FMR and related clinical factors.

Cross-sectional observational study with machine learning-based risk modelling.

Tertiary hospital in eastern China, secondary care level.

A total of 670 hospitalised RA patients (135 males and 535 females; aged 58.00 (50.00–67.00) years; disease duration 8.00 (2.00–16.00) years) and 126 healthy controls were recruited between October 2019 and October 2022. There were no differences in basic indicators such as gender, age distribution and body mass index between the two groups. RA diagnosis followed American College of Rheumatology (ACR) 1987 or ACR/European League Against Rheumatism 2010 criteria. Exclusion criteria included major organ dysfunction, endocrine disease, infection or long-term hormone or psychotropic drug use.

Primary outcomes included total skeletal muscle mass, fat mass, FMR measured by bioelectrical impedance analysis and bone mineral density measured by dual-energy X-ray absorptiometry. Secondary outcomes included RA disease activity scores (clinical disease activity index (CDAI), simplified disease activity index, disease activity score in 28 joints (DAS28)) and glucocorticoid use. Logistic regression and four additional machine learning algorithms were used to build predictive models for OP.

The RA group (age, 58.00; duration, 8.00; DAS28, 5.03; rheumatoid factor, 104.75; C-reactive protein, 25.65; erythrocyte sedimentation rate (ESR), 59.00) exhibited reduced total skeletal muscle mass (19.49 vs 25.38, p

FMR may serve as a useful clinical indicator of secondary OP in RA patients. A model based on FMR and associated risk factors can predict the possibility of secondary OP.

The optimal method for conducting spontaneous breathing trials (SBTs) remains a subject of ongoing debate. High-flow oxygen via endotracheal tube (HFOT) has emerged as a novel alternative for SBTs. However, studies investigating the associated physiological changes are lacking. Compared to high-flow nasal cannula (HFNC), HFOT has demonstrated diminished physiological effects, likely due to the bypassing of the upper airway, which may limit its widespread adoption as an SBT strategy. Two HFOT interfaces with different expiratory port diameters will be evaluated. It is hypothesised that the narrower interface would generate higher airway pressure and mitigate weakening physiological effects compared to the HFNC. This study aims to compare the physiological effects of two HFOTs compared to T-piece during SBTs.

This is a single-centre, prospective, physiological randomised crossover study in adult patients receiving mechanical ventilation for more than 24 hours who are deemed ready for SBT. After enrolment, each patient will be disconnected from the ventilator and undergo five SBT phases in random order: T-piece at 6 L/min, HFOT via interface with an expiratory port diameter of 9.8 mm at 40 L/min and 60 L/min and HFOT via interface with an expiratory port diameter of 6.9 mm at 40 L/min and 60 L/min. To reduce carryover effects, each phase will be separated by a 10-min washout period during which baseline mechanical ventilation is resumed. Key physiological parameters will be assessed in each study phase, including airway pressure, changes in end-expiratory lung volume, vital signs, oxygenation levels and inspiratory effort. Postextubation inspiratory effort will also be measured. Finally, 20 patients with the complete five SBT phases and postextubation datasets will be analysed

The study protocol has been approved by the Institutional Ethics Committee and Review Board of Beijing Shijitan Hospital, Capital Medical University (IIT2024-157-002). The data generated in the present study will be available from the corresponding author on reasonable request. The results of the trial will be submitted to international peer-reviewed journals.

NCT06816706.

This study investigated the effects of work cessation on cognitive function among older adults in rural China. Given that cognitive disorders affect 6.04% of individuals aged 60 and above—with higher prevalence in rural areas—understanding this relationship is critical.

A cross-sectional study was employed, using data from the 2020 wave of the China Health and Retirement Longitudinal Study (CHARLS). Regression analysis assessed the impact of work cessation on cognitive function and the moderating effects of social activities, health behaviours and internet use.

Data were collected from 150 districts, 450 villages, and urban community units in China.

The study included 6,318 participants, with 4,045 currently employed and 2,273 no longer working.

Cognitive function was evaluated using measures of mathematical computation, temporal and image cognition, and situational memory was tested through 20 memory-related questions. Explanatory variables included work cessation status, while moderating variables encompassed social activities, health behaviours (smoking and alcohol consumption) and internet use.

Work cessation has a negative impact on cognitive function, particularly situational memory and overall cognitive ability. Stopping work was associated with a decrease in cognitive functioning by 0.796 SD (p

Work cessation significantly reduced cognitive function in rural Chinese older adults. Leisure activities can mitigate this decline, but they often lack quality and diversity. Health behaviour improvements show heterogeneity, and internet use mitigates cognitive decline despite urban–rural digital gaps. To protect rural older adults’ cognitive function, policies promoting flexible employment, enhanced recreational infrastructure, health outreach and bridging digital divides are proposed.