Subtype classification of age-related macular degeneration (AMD) based on optical coherence tomography (OCT) images serves as an effective auxiliary tool for clinicians in diagnosing disease progression and formulating treatment plans. To improve the classification accuracy of AMD subtypes, this study proposes a keypoint-based, attention-enhanced residual network (KPA-ResNet). The proposed architecture adopts a 50-layer residual network (ResNet-50) as the backbone, preceded by a keypoint localization module based on heatmap regression to outline critical lesion regions. A two-dimensional relative self-attention mechanism is incorporated into convolutional layers to enhance the representation of key lesion areas. Furthermore, the network depth is appropriately increased and an improved residual module, ConvNeXt, is introduced to enable comprehensive extraction of high-dimensional features and enrich the detail of lesion boundary contours, ultimately achieving higher classification accuracy of AMD subtypes. Experimental results demonstrate that KPA-ResNet achieves significant improvements in overall classification accuracy compared with conventional convolutional neural networks. Specifically, for the wet AMD subtypes, the classification accuracies for inactive choroidal neovascularization (CNV) and active CNV reach 92.8% and 95.2%, respectively, representing substantial improvement over ResNet-50. These findings validate the superior performance of KPA-ResNet in AMD subtype classification tasks. This work provides a high-accuracy, generalizable network architecture for OCT-based AMD subtype classification and offers new insights into integrating attention mechanisms with convolutional neural networks in ophthalmic image analysis.
Tomography, Optical Coherence/methods* ; Humans ; Macular Degeneration/diagnostic imaging* ; Neural Networks, Computer

Background: s/Aims: Non-invasive models stratifying clinically significant portal hypertension (CSPH) are limited. Herein, we developed a new non-invasive model for predicting CSPH in patients with compensated cirrhosis and investigated whether carvedilol can prevent hepatic decompensation in patients with high-risk CSPH stratified using the new model. Methods: Non-invasive risk factors of CSPH were identified via systematic review and meta-analysis of studies involving patients with hepatic venous pressure gradient (HVPG). A new non-invasive model was validated for various performance aspects in three cohorts, i.e., a multicenter HVPG cohort, a follow-up cohort, and a carvediloltreating cohort. Results: In the meta-analysis with six studies (n=819), liver stiffness measurement and platelet count were identified as independent risk factors for CSPH and were used to develop the new “CSPH risk” model. In the HVPG cohort (n=151), the new model accurately predicted CSPH with cutoff values of 0 and –0.68 for ruling in and out CSPH, respectively. In the follow-up cohort (n=1,102), the cumulative incidences of decompensation events significantly differed using the cutoff values of <–0.68 (low-risk), –0.68 to 0 (medium-risk), and >0 (high-risk). In the carvediloltreated cohort, patients with high-risk CSPH treated with carvedilol (n=81) had lower rates of decompensation events than non-selective beta-blockers untreated patients with high-risk CSPH (n=613 before propensity score matching [PSM], n=162 after PSM). Conclusions Treatment with carvedilol significantly reduces the risk of hepatic decompensation in patients with high-risk CSPH stratified by the new model.

Objective:To investigate the relationship between the changes in extracellular vesicles (EVs) size distribution before and after cardiopulmonary bypass (CPB) cardiac surgery and postoperative coagulation function.Methods:A total of 103 patients undergoing cardiac surgery with CPB were enrolled. Venous blood samples were collected at preoperation, postoperative 12 h and 3 days. Additionally, 50 age- and gender-matched healthy volunteers served as a control group. EVs were isolated using gradient centrifugation, and their size distribution was assessed by dynamic light scattering (DLS). The relationship between EV size characteristics, including peak diameter, peak height, and interquartile range( IQR), and postoperative coagulation function was analyzed. Results:Compared to patients with normal postoperative coagulation function, those with postoperative coagulation dysfunction had lower size at peak and IQR, and significantly higher peak intensity. Logistic regression analysis indicated that elevated peak intensity and lower size at peak and IQR were risk factors for coagulation dysfunction. The area under the curve ( AUC) for diagnosing coagulation dysfunction with 12 h postoperative EVs peak intensity was 0.76, with a positive predictive value of 85% at the optimal cutoff of 8.2; the AUC for IQR was 0.84, with a sensitivity of 83%, specificity of 82%, and negative predictive value of 86% at the optimal cutoff of 125.05 nm. Conclusion:The size distribution of circulating EVs show a correlation with coagulation function after cardiac surgery with CPB and may serve as a novel biomarker to predict postoperative coagulation dysfunction.

Objective:To analyze the underlying issues and root causes of primary healthcare resource allocation in China,to identify the key elements of the current mismatch in primary healthcare resource allocation,and to propose targeted optimization strategies.Methods:Utilizing the fuzzy set Qualitative Comparative Analysis(fsQCA)method to conduct a comprehensive investigation on the fundamental drivers of misallocation in the provision of primary healthcare resources in China,along with the associated grouping patterns.Results:From 2011 to 2021,the overall misallocation of primary medical and health resources in 31 provinces and cities of China showed a downward trend,with the average value decreasing from 0.801 to 0.661.There were 8 configuration paths to improve the optimal allocation of primary medical resources,including 2 biased factors-driven,4"system,society,and population"three-way synergistic types,and 2 multi-factor comprehensive synergistic types.Conclusion:It is recommended that all provinces need to adhere to the principle of government leadership and promote comprehensive reform of the medical and healthcare sector,with particular consideration given to the specific medical needs of the elderly.Furthermore,it is essential to implement the strategic guiding principle of diversified and synergistic development,with the objective of promoting a balanced distribution of high-quality medical resources.

The co-occurrence of epilepsy and arrhythmia is an increasingly concerned research area, but the underlying biological mechanism is still not fully understood. In recent years, many studies have focused on how mutations in ion channel genes affect the electrophysiological properties of neurons and heart muscle cells, revealing a possible intersection between epilepsy and arrhythmia. Mutations in ion channel genes (such as SCN1A, KCNQ2, and RYR2) may simultaneously affect the electrophysiological properties of neurons and cardiomyocytes, leading to the comorbidity of epilepsy and arrhythmia. During epileptic seizures, activation of the autonomic nervous system may cause abnormal cardiac electrical activity, increasing risks of arrhythmia and sudden death resulting from epilepsy. In addition, the potential effects of antiepileptic drugs on cardiac ion channels can further increase the arrhythmia risk. This article reviews the research progress on the electrophysiological characteristics of ion channels in neurons and cardiomyocytes, the relations of ion channel gene mutations with epilepsy, arrhythmia, and their comorbidity, with the aim of providing new ideas for clinical diagnosis and treatment of epilepsy.

Background: s/Aims: Non-invasive models stratifying clinically significant portal hypertension (CSPH) are limited. Herein, we developed a new non-invasive model for predicting CSPH in patients with compensated cirrhosis and investigated whether carvedilol can prevent hepatic decompensation in patients with high-risk CSPH stratified using the new model. Methods: Non-invasive risk factors of CSPH were identified via systematic review and meta-analysis of studies involving patients with hepatic venous pressure gradient (HVPG). A new non-invasive model was validated for various performance aspects in three cohorts, i.e., a multicenter HVPG cohort, a follow-up cohort, and a carvediloltreating cohort. Results: In the meta-analysis with six studies (n=819), liver stiffness measurement and platelet count were identified as independent risk factors for CSPH and were used to develop the new “CSPH risk” model. In the HVPG cohort (n=151), the new model accurately predicted CSPH with cutoff values of 0 and –0.68 for ruling in and out CSPH, respectively. In the follow-up cohort (n=1,102), the cumulative incidences of decompensation events significantly differed using the cutoff values of <–0.68 (low-risk), –0.68 to 0 (medium-risk), and >0 (high-risk). In the carvediloltreated cohort, patients with high-risk CSPH treated with carvedilol (n=81) had lower rates of decompensation events than non-selective beta-blockers untreated patients with high-risk CSPH (n=613 before propensity score matching [PSM], n=162 after PSM). Conclusions Treatment with carvedilol significantly reduces the risk of hepatic decompensation in patients with high-risk CSPH stratified by the new model.

Background: s/Aims: Non-invasive models stratifying clinically significant portal hypertension (CSPH) are limited. Herein, we developed a new non-invasive model for predicting CSPH in patients with compensated cirrhosis and investigated whether carvedilol can prevent hepatic decompensation in patients with high-risk CSPH stratified using the new model. Methods: Non-invasive risk factors of CSPH were identified via systematic review and meta-analysis of studies involving patients with hepatic venous pressure gradient (HVPG). A new non-invasive model was validated for various performance aspects in three cohorts, i.e., a multicenter HVPG cohort, a follow-up cohort, and a carvediloltreating cohort. Results: In the meta-analysis with six studies (n=819), liver stiffness measurement and platelet count were identified as independent risk factors for CSPH and were used to develop the new “CSPH risk” model. In the HVPG cohort (n=151), the new model accurately predicted CSPH with cutoff values of 0 and –0.68 for ruling in and out CSPH, respectively. In the follow-up cohort (n=1,102), the cumulative incidences of decompensation events significantly differed using the cutoff values of <–0.68 (low-risk), –0.68 to 0 (medium-risk), and >0 (high-risk). In the carvediloltreated cohort, patients with high-risk CSPH treated with carvedilol (n=81) had lower rates of decompensation events than non-selective beta-blockers untreated patients with high-risk CSPH (n=613 before propensity score matching [PSM], n=162 after PSM). Conclusions Treatment with carvedilol significantly reduces the risk of hepatic decompensation in patients with high-risk CSPH stratified by the new model.

Objective:To explore the temporal characteristics,spatial effects,spatial correlation patterns and dynamic evolution laws of the coordinated development of medical resource allocation and economic society in China from 2010 to 2021,and to provide scientific references for promoting the coordinated and orderly development of medical and health services and economic society.Methods:The coupling coordination theory is introduced to construct a"time+space"dual-dimensional dynamic coupling coordination degree model,and the spatial correlation analysis method is used to analyze the spatial and temporal evolution characteristics of China's medical resource allocation and economic and social coupling coordination level from 2010 to 2021.On this basis,the grey prediction model is used to dynamically predict the future development and changes of the coupling coordination level of 31 provinces from 2024 to 2028.Results:From 2010 to 2021,the level of coupling and coordination between medical resource allocation and economic and social development has been steadily increased,but the overall coordination level is low,the regional gap is large,and the benign resonance coupling and coordinated and orderly development have not been fully realized;there is a significant spatial positive correlation and spatial agglomeration effect between the allocation of medical resources and the level of economic and social coupling and coordination,mainly based on the spatial correlation mode of high-high agglomeration and low-low agglomeration.From 2024 to 2028,the gap of interregional coupling coordination level will be narrowed,and the western region will still be in the stage of imbalance.Conclusion:We should focus on regional geospatial differences,improve the cross-regional multilateral coordinated development mechanism,promote mutual assistance and sharing of medical resources,technology,capital and management experience,establish and improve the investment mechanism suitable for the level of economic and social development,and promote the coordinated and orderly development of medical and health undertakings and economic society.

Objective:To analyze the underlying issues and root causes of primary healthcare resource allocation in China,to identify the key elements of the current mismatch in primary healthcare resource allocation,and to propose targeted optimization strategies.Methods:Utilizing the fuzzy set Qualitative Comparative Analysis(fsQCA)method to conduct a comprehensive investigation on the fundamental drivers of misallocation in the provision of primary healthcare resources in China,along with the associated grouping patterns.Results:From 2011 to 2021,the overall misallocation of primary medical and health resources in 31 provinces and cities of China showed a downward trend,with the average value decreasing from 0.801 to 0.661.There were 8 configuration paths to improve the optimal allocation of primary medical resources,including 2 biased factors-driven,4"system,society,and population"three-way synergistic types,and 2 multi-factor comprehensive synergistic types.Conclusion:It is recommended that all provinces need to adhere to the principle of government leadership and promote comprehensive reform of the medical and healthcare sector,with particular consideration given to the specific medical needs of the elderly.Furthermore,it is essential to implement the strategic guiding principle of diversified and synergistic development,with the objective of promoting a balanced distribution of high-quality medical resources.

Objective:To explore the temporal characteristics,spatial effects,spatial correlation patterns and dynamic evolution laws of the coordinated development of medical resource allocation and economic society in China from 2010 to 2021,and to provide scientific references for promoting the coordinated and orderly development of medical and health services and economic society.Methods:The coupling coordination theory is introduced to construct a"time+space"dual-dimensional dynamic coupling coordination degree model,and the spatial correlation analysis method is used to analyze the spatial and temporal evolution characteristics of China's medical resource allocation and economic and social coupling coordination level from 2010 to 2021.On this basis,the grey prediction model is used to dynamically predict the future development and changes of the coupling coordination level of 31 provinces from 2024 to 2028.Results:From 2010 to 2021,the level of coupling and coordination between medical resource allocation and economic and social development has been steadily increased,but the overall coordination level is low,the regional gap is large,and the benign resonance coupling and coordinated and orderly development have not been fully realized;there is a significant spatial positive correlation and spatial agglomeration effect between the allocation of medical resources and the level of economic and social coupling and coordination,mainly based on the spatial correlation mode of high-high agglomeration and low-low agglomeration.From 2024 to 2028,the gap of interregional coupling coordination level will be narrowed,and the western region will still be in the stage of imbalance.Conclusion:We should focus on regional geospatial differences,improve the cross-regional multilateral coordinated development mechanism,promote mutual assistance and sharing of medical resources,technology,capital and management experience,establish and improve the investment mechanism suitable for the level of economic and social development,and promote the coordinated and orderly development of medical and health undertakings and economic society.