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中国学术期刊综合评价数据库统计源期刊
中国学术期刊影响因子统计源期刊
中国生物医学文献数据库(CBM)收录期刊
    • 2025 Volume 34 Issue 4
      Published: 28 August 2025
        


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    • YU Tao, ZHU Wenqing
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      Artificial intelligence (AI) has significantly improved the screening and diagnostic efficiency of ventricular arrhythmia (VA) through electrocardiogram (ECG) interpretation and wearable device monitoring. In the treatment field, AI has made significant progress in assisting the localization of premature ventricular contraction origins and optimizing strategies for implantable cardioverter defibrillator therapies. AI models excel in predicting the risk of fatal VA, providing robust support for individualized prevention and treatment. This review further discusses challenges such as data quality, model interpretability, and clinical translation, as well as the role of multimodal data integration and interdisciplinary collaboration in advancing the precision medicine for VA. In the future, AI is expected to play a more pivotal role in remote healthcare, and individualized diagnosis and treatment, comprehensively enhancing diagnostic accuracy, treatment efficiency, and quality of life for VA patients.
    • LIU Yu
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      This article focuses on the application of artificial intelligence (AI) technology in the diagnosis and treatment of arrhythmias, and briefly introduces the latest relevant research findings from both domestic and international sources. It not only outlines the capability of AI in significantly improving the detection efficiency and accuracy of arrhythmia screening and diagnosis, but also emphasizes its value in the prediction of arrhythmia and the risk of its related complications, and guidance of its clinical treatment. Furthermore, this article summarizes the challenges faced by AI in arrhythmia management, including data quantity and quality issues, the “black box” effect in AI learning process, model generalization issues, ethical issues in technology, and the clinical acceptance of AI models. Finally, it looks forward to the prospect of AI technology deeply integrating with medicine, and comprehensive application in all aspects of arrhythmia diagnosis and treatment, so as to optimize medical resource allocation and medical service workflows, increase medical efficiency and quality, and improve patients’ prognoses.
    • BIE Hengjie, FU Yahong, JIA Enzhi, TAO Zhengxian
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      Objective  To investigate the regulatory role and underlying mechanism of circular RNA circHECTD1, a potential diagnostic biomarker for coronary heart disease (CHD), in macrophage polarization. Methods  A lipopolysaccharide-induced M1 macrophage polarization model was used to simulate a low-grade inflammatory response process. Quantitative real-time PCR (qRT-PCR) was employed to detect the expression levels of circHECTD1 and N6-methyladenosine (m6A) regulatory factors. Western blotting was performed to measure the expression of M1 phenotype marker proteins and autophagyrelated proteins. Intracellular reactive oxygen species (ROS) levels were assessed by flow cytometry. Results  Silencing circHECTD1 significantly reduced the expression of M1 phenotype-related proteins and inflammatory cytokines, decreased ROS levels, and enhanced cellular autophagy. Disordered expression of multiple m6A regulatory factors was observed in both the cellular model and peripheral blood mononuclear cells (PBMCs) from CHD patients. Significant differences in the expression levels of multiple m6A methylation regulators were identified between CHD and control groups, suggesting their potential value in CHD diagnosis. Univariate and multivariate Logistic regression analysis revealed that the m6A regulators of METTL3, METTL14, ALKBH5, and YTHDC2 were significantly associated with CHD risk. Further analysis showed that the expression of METTL14 and ALKBH5 were significantly upregulated in advanced stages of atherosclerosis. The expression level of circHECTD1 significantly correlated with FTO, YTHDF3, ALKBH5, METTL3, METTL14, and YTHDF2. In vitro experiment results demonstrated that silencing METTL14 and ALKBH5 markedly downregulated circHECTD1 expression, indicating that METTL14 and ALKBH5 positively regulated circHECTD1 expression. Conclusion  Dysregulation of m6A regulatory factors may be closely associated with the occurrence and development of CHD, potentially mediated through the regulation of circHECTD1 expression and function.
    • LIN Xiaohua, OUYANG Yu, CHENG Xiao, XIAO Jingwen, JIANG Yu, WEI Qinfei, ZHANG Yan
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      Objective  To investigate the impact of long non-coding RNA ZFAS1 (lncZFAS1) on the initiation and progression of cardiomyocyte fibrosis. Methods  HL-1 mouse cardiac myocytes were induced by transforming growth factor-β (TGF-β) to establish a cardiomyocyte fibrosis model. LncZFAS1 overexpression vectors or small interfering RNA (siRNA) were transfected into the model. Protein levels of α-smooth muscle actin (α-SMA) and collagen Ⅰ were detected by western blotting; lncZFAS1 overexpression and interference fragments were transfected into the cardiomyocyte fibrotic model. The transcriptional level of lncZFAS1 was measured via real-time quantitative PCR. Cell proliferation viability was assessed using the CCK-8 assay, apoptosis rate was analyzed by flow cytometry, and LC3 autophagy puncta formation was examined using cellular immunofluorescence. Results  Compared with the control group, the TGF-β induction group showed significantly increased protein expression of α-SMA, collagen Ⅰ and LC3 B, significantly decreased p62 protein expression, elevated lncZFAS1 expression, enhanced cell viability and autophagy puncta formation, and reduced apoptosis rate (all P<0.05). After interfering with lncZFAS1 in the model, it showed a decrease in the expression level of lncZFAS1, a decrease in cell viability and the number of autophagy puncta, an increase of apoptosis rate and expression of p62 protein, and a decrease in the expression of LC3 B protein, all with statistically significant differences (all P<0.05). However, after overexpression of lncZFAS1, the opposite results were presented. Conclusion  LncZFAS1 promotes the initiation and progression of cardiomyocyte fibrosis by regulating cellular autophagy. Targeted inhibition of lncZFAS1 may provide a novel therapeutic strategy for delaying the progression of cardiovascular diseases.
    • DING Xiaojun1, ZHANG Youming2, GONG Junhui1, HAO Yingcai1, LIU Yusong1, SONG Yushu1, ZHU Hongtao1
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      Objective  To explore the relationship between epicardial fat thickness (EFT), serum secreted frizzled-related protein 5 (SFRP5), wingless-type MMTV integration site family member 5a (Wnt5a), and in-stent restenosis (ISR) in patients with acute ST-segment elevation myocardial infarction (STEMI) after percutaneous coronary intervention (PCI). MethodsA total of 128 STEMI patients who had undergone emergency PCI were enrolled. After a 12-month follow-up, they were divided into a non-ISR group (80 cases) and an ISR group (48 cases) based on coronary angiography results. The general data between the two groups were compared, as well as the EFT before discharge and 1 month after surgery, and the serum levels of SFRP5 and Wnt5a measured before surgery and 1 month postoperatively. The differences in the levels of these indicators among patients with varying degrees of coronary artery lesions were also examined. Pearson correlation analysis was used to evaluate the association between EFT and serum levels of SFRP5 and Wnt5a 1 month after surgery. Multivariate Logistic regression analysis was applied to identify the risk factors of ISR in STEMI patients after PCI. ROC curve analysis was used to assess the predictive value of EFT, and serum SFRP5 and Wnt5a levels for ISR. ResultsThe EFT values of the ISR group before discharge and 1 month after surgery were both greater than those of the non-ISR group (all P<0.01). The serum SFRP5 level of the ISR group was lower than that of the non-ISR group 1 month after surgery, while the serum Wnt5a level was higher (all P<0.01). Compared to pre-operative levels, serum SFRP5 levels increased 1 month after surgery in the non-ISR group but decreased in the ISR group (both P<005). Serum Wnt5a levels showed a mild increase 1 month after surgery compared to pre-operative levels in the non-ISR group, but increased significantly in the ISR group (both P<0.05). The serum SFRP5 level 1 month after surgery was significantly lower in the three-vessel disease group than that in the single- or two-vessel disease groups (P<0.05). EFT 1 month after surgery showed a negative correlation with SFRP5 and a positive correlation with Wnt5a. Both univariate Logistic regression analysis and Logistic regression analysis adjusted for factors such as age and BMI demonstrated that EFT, and serum SFRP5 and Wnt5a levels 1 month after surgery were independent influencing factors for ISR. ROC curve analysis revealed that the combination of these three markers yielded an AUC value of 0.906, which was higher than that of detection with any single indicator. Conclusion  Increased EFT, decreased serum SFRP5, and elevated serum Wnt5a 1 month after surgery are closely related to ISR in STEMI patients after PCI. Early detection of these markers facilitates the prediction of ISR, and the combined detection offers superior predictive value.
    • WANG Yong, ZHAO Yonghui, WANG Zhen
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      Objective  To investigate the application of dexmedetomidine via programmed intermittent epidural bolus (PIEB) for labor analgesia in hypertensive disorder of pregnancy (HDP) parturients, and its effect on umbilical artery flow and maternal-fetal outcomes. Methods  This study was a prospective, and double-blind clinical study. A hundred HDP parturients who had undergone labor analgesia were selected, and randomly divided into group A and B, each with 50 cases by random number table method. Group A received continuous epidural infusion, while group B received PIEB. Based on the visual analogue scale (VAS), the degree of pain before analgesia (T0), 1 h after analgesia (T1), 2 h after analgesia (T2), and at the time of complete cervical dilation (T3) were compared between the two groups of parturients. We simultaneously recorded the changes of umbilical artery flow at T0-T2 [umbilical artery resistance index (RI), pulsation index (PI) and the ratio of maximum systolic blood velocity to diastolic blood velocity (S/D)], maternal vital signs at T0 and T1 [heart rate (HR) and mean arterial pressure (MAP)], and the occurrence of adverse maternalfetal outcomes and adverse reactions in the two groups. ResultsComparison of VAS scores at different time points within each group showed statistically significant differences (all P<0.01). VAS scores at T1, T2 and T3 were all lower than that at T0(all P<0.05). VAS score of the group B at T2 was lower than that at T1(P<0.05). VAS score of the group B at T3 was lower than that at T2(P<0.05), while the VAS score of the group B at T2 or T3 were both lower than that of the group A (both P<0.01). There was no statistically significant difference in VAS score between the two groups at T0 and T1(P>0.05). Statistically significant differences were observed in RI, PI, and S/D values across different time points within both groups (all P<0.01). At T1 and T2, the RI, PI, and S/D ratio of fetuses in both groups all decreased compared to T0(all P<0.05). At T2, the RI, PI and S/D ratio of fetuses in both groups were all lower than those at T1(all P<0.05). There were no statistically significant differences in fetal RI, PI, and S/D ratio between the two groups at T0, T1 or T2(all P>0.05). At T1, HR and MAP in the two groups were both lower than those at T0(both P<0.05), while HR and MAP of the group B were both lower than those of the group A (both P<0.05). There were no statistically significant differences in the total incidences of adverse maternal-fetal outcomes or drug adverse reactions between the two groups (all P>0.05). Conclusion  Dexmedetomidine via PIEB could improve the effect of labor analgesia in HDP parturients, and maintain stability of fetal umbilical hemodynamics and maternal vital signs, with a high safety.
    • ZHI Qing1, SUN Liqiang1, LI Ya2, LI Meng1, ZHAO Jiajia1
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      Objective  To investigate the occurrence of major adverse cardiovascular events (MACEs) and related risk factors in elderly patients with coronary artery disease (CAD) undergoing percutaneous coronary intervention (PCI) after discharge. Methods  A total of 100 elderly CAD patients treated with PCI were enrolled. Postoperative follow-up was conducted, and these patients were divided into MACEs and non-MACEs groups based on the occurrence of cardiovascular adverse events. Linear regression analysis was used to identify independent risk factors for postoperative MACEs. Results  Age, diabetes mellitus, SYNTAX score, low-density lipoprotein cholesterol, and living alone status were identified as independent risk factors for postoperative MACEs. Interaction effect among these factors may collectively contribute to the occurrence of MACEs. Conclusion  Clinical attention should focus on high-risk populations with advanced age, diabetes, severe coronary artery lesions and insufficient social support. Targeted interventions are recommended to reduce MACEs risk and improve prognosis.
    • GONG Shuxin, ZHU Ming
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      Objective  To investigate the prognostic value of the combined detection of electrocardiogram (ECG) fragmented QRS complex (fQRS) and myocardial enzyme profile levels in patients with acute ST-segment elevation myocardial infarction (STEMI) undergoing emergency percutaneous coronary intervention (PCI) treatment. MethodsClinical data of 98 STEMI patients treated with emergency PCI were retrospectively analyzed. Myocardial enzyme profiles and 12-lead ECG examination results were collected. Patients were divided into a good-prognosis group (n=78) and a poor-prognosis group (n=20) based on the occurrence of major adverse cardiovascular events (MACEs) within 6 months postoperatively. Multivariate Logistic regression analysis was used to identify influencing factors for poor prognosis in STEMI patients after emergency PCI treatment. ROC curve analysis was applied to evaluate the predictive value of fQRS combined with CK-MB and cTn I levels for the prognosis of STEMI patients after emergency PCI. ResultsThe incidence of MACEs was 20.41% (20/98) among 98 patients. The incidence of fQRS, and CKMB and cTn I levels in the poor-prognosis group were all significantly higher than those in the good-prognosis group (all P<0.05). Logistic regression analysis identified fQRS, and CK-MB and cTn I levels as risk factors for MACEs in STEMI patients after emergency PCI (all P<0.05). ROC curve analysis revealed that the AUC value of any single indicator of fQRS, CK-MB level and cTn I level was all significantly lower than that of the combined detection in predicting the prognosis of STEMI patients after emergency PCI (all P<0.05). Conclusion  STEMI patients exhibit a high incidence of MACEs after PCI treatment. Both fQRS and myocardial enzyme profile levels can serve as reference indicators for prognosis  assessment, with combined detection offering superior predictive value.
    • GUAN Jingjing, LIU Ying
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      Objective  To investigate the association between electrocardiogram (ECG) P-wave parameters and the severity of white matter lesions (WMLs), providing a scientific basis for the prevention and treatment of WMLs. Methods  A total of 289 hospitalized patients with WMLs meeting the inclusion criteria were selected as study objects, and all participants underwent routine 12-lead ECG and cranial magnetic resonance imaging examination. These patients were divided into no-mild group (158 cases) and moderate-severe group (131 cases) according to the Fazekas scale scores. We collected clinical data, medical history, ECG P-wave parameters including P-wave duration, P-wave axis and terminal force of P-wave in lead V1 (PTFV1), lipid profile, and other data of both groups for comparative analysis. Logistic regression model was used to analyze independent risk factors for WMLs. Results  In the moderate-severe group, their age, and the proportions of cases with history of hypertension or diabetes and PTFV1>4 000 μV·ms were all significantly higher than those in the no-mild group, all with statistically significant differences (all P<0.01). Multivariate Logistic regression analysis indicated that increased age, hypertension, diabetes, and PTFV1>4 000 μV·ms were all independent risk factors for WMLs. ConclusionThe non-invasive ECG index PTFV1 is cost-effective, convenient and easily accessible. It can be used to assess atrial abnormalitie. It contributes to the prevention and treatment of WMLs.
    • LIU Peng
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      Objective  To evaluate the predictive value of changes in electrocardiographic parameters for the risk of arrhythmia complicating acute myocardial infarction (AMI). Methods  Clinical data of 138 AMI patients who had undergone percutaneous coronary intervention (PCI) were retrospectively selected. Based on the presence or absence of arrhythmia within 1 week after PCI, these patients were divided into an arrhythmia group (n=56) and a non-arrhythmia group (n=82). Preoperative and postoperative (1-month) electrocardiographic parameters including QT interval, Tp-Te interval, QT dispersion (QTd), RR interval and SDNN were compared between the two groups. Binary Logistic regression analysis was employed to examine the relationship between electrocardiogram (ECG) changes and the risk of arrhythmia in AMI patients. The predictive efficiency of these ECG indicators for arrhythmia among AMI patients was evaluated using ROC curve analysis. ResultsOne month postoperatively, 138 AMI patients exhibited significantly decreased QT interval, Tp-Te interval, QTd and RR interval, while SDNN was significantly increased compared to preoperative values (all P<0.01). Preoperatively, the arrhythmia group demonstrated significantly higher Tp-Te interval, QTd, and SDNN than those of the nonarrhythmia group (all P<0.01). Binary Logistic regression analysis identified Tp-Te interval and QTd as independent risk factors for arrhythmia in AMI patients (both OR>1, P<0.05), with SDNN serving as a protective factor (OR<1, P<0.01). ROC curve analysis revealed that the AUC values for predicting arrhythmia in AMI patients by using Tp-Te interval, QTd, SDNN, or their combination all exceeded 0.70. Conclusion  After PCI, ECG parameters of AMI patients all improve significantly. Tp-Te interval, QTd, and SDNN are influencing factors for arrhythmia among AMI patients. ECG could be used to predict the risk of arrhythmia complicating AMI.
    • LIU Jingjing, HONG Nianquan
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      Objective  To investigate the diagnostic value of artificial intelligence (AI) technology combined with CT angiography (CTA) for coronary artery disease. Methods  Seventy patients with coronary lesions underwent CTA examination combined with AI technology. The time of manual and AI-assisted diagnosis were compared, along with image quality in volume rendering (VR) and factors contributing to image defects separately by manual, AI-assisted, and combined diagnostic approaches. Using coronary angiography (CAG) as the “gold standard”, the diagnostic efficiency for coronary stenosis was analyzed among the three methods, and their consistency with CAG results was evaluated. Results  The total time for manual post-processing and report generation was longer than that of AI-assisted diagnosis [(25.37±6.74) min vs. (1.53±0.28) s], with statistically significant difference (P<0.05). No statistically significant differences were found in VR image quality ratings or image defect factors among the three diagnostic approaches (all P>0.05). Among the 70 patients, 38 were confirmed with coronary stenosis and 32 without stenosis by the gold standard. The combined manual and AI-assisted diagnosis demonstrated superior value for coronary stenosis compared to either method alone, showing the strongest consistency with CAG results (P<0.05). Conclusion  The combination of AI technology and CTA examination demonstrates significant advantages in diagnosing coronary artery disease, effectively reducing diagnostic time and improving diagnostic accuracy. Its strong consistency with CAG results supports its use as an effective clinical method for differentiating coronary artery disease, which deserves widespread clinical application.
    • LIU Jin1, WU Jinchun2, GUO Huijie1, Dawazhuoma3, ZHANG Xiaofei2, BAI Yuting2, WEI Xiaojuan2, LIU Yanmin2, SU Xiaoling2
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      Objective  To analyze the clinical characteristics and risk factors for stroke in non-valvular atrial fibrillation (NVAF) patients residing in plateau region, and to construct a relevant risk prediction model. Methods  Clinical data of 1 062 NVAF patients in the Qinghai region were retrospectively selected, and divided into a stroke group (n=102) and a non-stroke group (n=960) based on the presence or absence of stroke. Univariate analysis was performed to screen variables across relevant indicators between the two groups. Multivariate Logistic regression analysis was used to identify independent risk factors for stroke in NVAF patients in the Qinghai region. A nomogram-based prediction model was constructed, and its prediction performance was evaluated using methods such as ROC curve and calibration curve analysis. ResultsStatistically significant differences existed in age, BMI, systolic blood pressure, HAS-BLED and CHA2DS2-VASc scores, right ventricular diameter, INR, BNP, sex, and hypertension history between the stroke and nonstroke groups (all P<0.05). Following initial variable screening by univariate Logistic analysis, multivariate Logistic regression analysis identified 7 independent risk factors: age (OR=1.173, 95%CI 1.090-1.261), BMI (OR=1.304, 95%CI 1.131-1.503), HAS-BLED score (OR=2.695, 95%CI 1.740-4.176), CHA2DS2-VASc score (OR=2.378, 95%CI 1.791-3.157), BNP (OR=1.001, 95%CI 1.001-1.002), sex (OR=3.671, 95%CI 1.820-7.406), and hypertension (OR=2.071, 95%CI 1.079-3.977) for predicting stroke in NVAF patients. The nomogrambased prediction model incorporating these 7 influencing factors demonstrated excellent discrimination (C-index=0.93, 95%CI 0.90-0.95) and outstanding predictive accuracy (AUC=0.96, 95%CI 0.93-0.99). It indicated excellent model fit, with the calibration curve closely approximating the ideal curve. Conclusion  The primary independent risk factors for stroke in NVAF patients in the Qinghai region are age, BMI, HAS-BLED score, CHA2DS2-VAS score, BNP, sex, and hypertension. The model constructed using these factors shows high accuracy in predicting stroke risk among this population.
    • HE Yuqi1, PAN Mingzhi1, ZHANG Xiaobin2, ZHANG Lu1
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      Objective  To analyze serum folate, vitamin B12 (VB12) and 25-hydroxyvitamin D [25(OH)D] levels in patients with Alzheimer’s disease (AD), and to evaluate the correlation of these three indicators with patients’ cognitive function and activities of daily living, as well as their diagnostic efficiency for AD. MethodsSixty AD patients (AD group) and 48 elderly healthy individuals undergoing physical examination (control group) were selected. Serum levels of folate, VB12, and 25(OH)D were measured in both groups. Cognitive function was assessed using the mini-mental state examination (MMSE), while activities of daily living were evaluated using the activity of daily living scale (ADL). ROC curves were plotted to analyze the diagnostic efficiency. ResultsSerum folate, VB12, and 25(OH)D levels, as well as MMSE and ADL scores, were all significantly lower in the AD group compared to the control group (all P<0.05). The three serum indicators were positively correlated with both MMSE and ADL scores (all P<0.05). ROC curve analysis revealed that the combined detection of folate, VB12, and 25(OH)D achieved an AUC value of 0.798 for AD diagnosis, with a sensitivity of 78.3% and a specificity of 72.9%. These values were all significantly higher than those of any single indicator used alone. Conclusion  Serum folate, VB12, and 25(OH)D levels are significantly decreased in AD patients, which are positively correlated with the degree of decline in patients’ cognitive function and activities of daily living. The combined detection of these three markers could improve the diagnostic efficiency for AD.
    • YUAN Shuaifang1, XIE Qiaotao1, TIAN Dandan2, WAN Yunlong3
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      Objective  To analyze the effect of Xintong Oral Solution combined with ticagrelor on hemorheology and oxidative stress response in patients with unstable angina pectoris (UAP) due to coronary heart disease. Methods  A total of 112 patients with UAP were selected as research objects for retrospective analysis. They were divided into a control group (56 cases, treated with ticagrelor) and an observation group (56 cases, treated with Xintong Oral Solution combined with ticagrelor) according to different treatment schemes. Both groups received continuous treatment for 4 weeks. We compared the curative effect of traditional Chinese medicine syndromes, and the levels of cardiac function indexes [cardiac output (CO), stroke volume (SV) and LVEF], hemorheological indexes (hematocrit, plasma viscosity, whole blood high-shear viscosity and whole blood lowshear viscosity) and serum oxidative stress indexes [malondialdehyde (MDA), oxidized lowdensity lipoprotein (ox-LDL), glutathione peroxidase (GSH-Px) and advanced glycation end products (AGEs)] between the two groups before and after treatment, as well as the occurrence of adverse reactions and incidence rate of adverse cardiovascular events. ResultsCompared with the control group, the overall clinical effectiveness rate of the observation group was higher (P<0-05). After treatment, the values of CO, SV and LVEF in the observation group were all higher than those in the control group (all P<0.01), while the levels of hematocrit, plasma viscosity, whole blood high-shear viscosity and whole blood lowshear viscosity in the observation group were all lower (all P<0.01). After treatment, the levels of serum MDA, ox-LDL and AGEs in the observation group were significantly lower than those in the control group, while the level of GSH-Px in the observation group was significantly higher than that in the control group (all P<0.01). There was no statistically significant difference in the overall incidence of adverse reactions between the two groups (P>0.05). After 6 months of follow-up, the overall incidence rate of adverse cardiovascular events in the observation group was significantly lower than that in the control group (P<0.05). ConclusionXintong Oral Solution combined with ticagrelor demonstrates significantly higher efficacy in treating UAP compared to monotherapy (either agent alone). After treatment, the cardiac function, hemorheology, and the levels of serum oxidative stress indexes are also significantly improved, while the incidence of adverse cardiovascular events is significantly reduced.
    • LI Xin, HUANG Haiyan, YE Juan
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      Objective   To explore the relationship between Nterminal probrain natriuretic peptide (NTproBNP), index of microcirculation resistance (IMR), and adverse left ventricular remodeling after percutaneous coronary intervention (PCI) in acute anterior wall myocardial infarction. MethodsWe selected 105 patients with acute anterior wall myocardial infarction who had undergone PCI surgery, and they all underwent echocardiography and other examinations. Based on the difference in the increment rate of left ventricular volume, these patients were divided into an adverse remodeling group (39 cases) and a nonremodeling group (66 cases). The general information, biochemical indicators, and other examination results were compared between the two groups. Statistically significant data from univariate analysis were included in multivariate Logistic regression analysis, in order to explore the relationship between NTproBNP, IMR, and adverse left ventricular remodeling. ResultsThe LVEF, early diastolic maximum velocity/end diastolic maximum velocity (E/A) of the mitral valve in the adverse remodeling group were significantly lower than those in the nonremodeling group, while NTproBNP and IMR were significantly higher than those in the nonremodeling group (all P<001). Logistic regression analysis showed that LVEF, E/A, NTproBNP, and IMR were independent risk factors for adverse left ventricular remodeling after PCI in acute anterior wall myocardial infarction (all P<001). ConclusionClinically, prevention and treatment measures for adverse left ventricular remodeling after PCI in acute anterior wall myocardial infarction can be developed based on NTproBNP and IMR to reduce the occurrence of adverse left ventricular remodeling.
    • MAO Yuhong, NIU Xiangdong, NIE Liantao
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      Objective  To analyze the characteristics of premature ventricular contraction (PVC) with bigeminy or trigeminy in the zOx plane of three-dimensional scatter plot, and to construct mathematical model. Methods  We selected 3 typical cases diagnosed as PVC with bigeminy or trigeminy by ambulatory electrocardiography (AECG),and summarized the characteristics of ventricular concurrent rhythm and common PVC in the zOx plane of threedimensional scatter plot. Based on mathematical principles, the coordinates of relevant scatter clusters were analyzed and computed; its mathematical model was established by using GeoGebra software. ResultsAfter making comparison among the zOx planes of Lorenz, difference and three-dimensional scatter plots, we found that three-dimensional scatter plots exhibited an equivalent number of scatter clusters compared to difference scatter plots in the diagnosis of bigeminy or trigeminy. The significance of the coordinates in the zOx plane of three-dimensional scatter plot was more intuitive, which provided an enhanced visualization of the characteristics including refractory periods of the atrioventricular node and cardiomyocytes, as well as the conditions for the persistence of bigeminy and trigeminy. Comparatively, there were more characteristic scatter clusters overlapped in Lorenz scatter plots; difference scatter plots exhibited fully separated characteristic scatter clusters at the cost of losing absolute information. ConclusionVentricular parapyrhythmia with bigeminy or trigeminy demonstrates obvious characteristics and strong regularity in the zOx plane of three-dimensional scatter plot. Its characteristic scatter clusters are essentially separated, intuitively reflecting the electrophysiological properties of parapyrhythmia. The zOx plane of three-dimensional scatter plot also leads us to consider whether there is a coexistence or transformation relationship between ventricular parapyrhythmia and non-ventricular parapyrhythmia with the same origin point.
    • CHEN Linlin1, LEI Lei1, WEI Xinli1, SONG Fuling1, GAO Ning1, LI Zelin2
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      Variations in pacemaker AV intervals are critical manifestation of special pacemaker functions, aimed at reducing ventricular pacing. Most pacemakers incorporate AV search function, such as Medtronic's Search AV/AV+ function, Biotronik's intrinsic rhythm support (IRS plus/I-Opt) function, Boston Scientific's AV Search/Search+ function, and Abbott's ventricular intrinsic preference (VIP) function. During the process of ambulatory electrocardiography (AECG) playback analysis, encountering unidentified pacemaker brands is common. It is particularly important to rapidly identify the pacemaker brand based on changes in the AV interval, thereby assisting in diagnosis and improving diagnostic accuracy. This paper systematically analyzes AV interval patterns across different pacemaker brands, and proposes a flowchart-based method for quick brand and function identification, aiming to enhance the accuracy and efficiency of AECG interpretation.
    • WEI Wei1, 2, XU Ziyue1, CHEN Shuai3, SHI Jichun1, LI Xiang1, 2, LIU Sha4, LU Junwei1
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      With the continuous advancement of technology, digital-intelligent technologies, deeply integrating digitalization and intelligence, have increasingly diversified applications in medical education. These technologies encompass artificial intelligence (AI), virtual reality (VR), big data analytics, mixed reality (MR), and other modalities. While demonstrating significant potential in virtual experimentation, personalized learning, clinical simulation, and teaching resource optimization, these digital-intelligent technologies also face limitations and challenges such as high technical barriers, insufficient ethical frameworks, and unsatisfactory user experience. Taking core digital-intelligent technologies such as AI, big data, VR, augmented reality, and MR as starting points, this paper systematically sorts out their typical application scenarios in medical education. It deeply compares the differentiated positioning, and complementary advantages mechanism of each technology from dimensions such as applicable subjects, teaching functions and integration methods. By constructing a “technology type-teaching phase-functional feature” trinity analytical framework, this paper further reveals the synergistic potential of various digital-intelligent technologies in teaching design, practical training, teaching evaluation, and other aspects. Its aim is to provide theoretical support and practical pathways for the precise matching and deep integration of technologies during the digital and intelligent transformation of medical education.
    • CHEN Siyue, LI Qianqian, ZHI Feng, CAO Futao
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      Objective  To investigate the application effect of flipped classroom combined with video-assisted endotracheal tubes in endotracheal intubation training for resident physicians in Department of Critical Care Medicine. MethodsSixty resident physicians participating in the Department of Critical Care Medicine standardized training in 2023 were selected. They were randomly divided into a traditional teaching group (lecture-based teaching plus standard tubes) and an innovative teaching group (flipped classroom plus video-assisted tubes), each with 30 cases. Based on the Ebbinghaus forgetting curve, theoretical scores (100-point scale), simulated operation performance (100-point scale), first-attempt success rate, and time-to-success were assessed separately before training, immediately after training, and one month post-training. A weighted composite score (theory score accounting for 30% and operation score accounting for 70%) was calculated. Teaching effectiveness and satisfaction were compared between the two groups. ResultsNo statistically significant difference existed in the baseline between the two groups before training (P>0.05). Immediately and one month after training, the traditional teaching group showed higher theoretical scores than those of the innovative teaching group (both P<0.05); however, the innovative teaching group demonstrated significantly higher operation scores and weighted composite scores (all P<0.05). In the innovative teaching group, the firstattempt success rate was higher and time-to-success was shorter, with significantly improved teaching satisfaction (all P<0.05). ConclusionThe novel teaching model significantly improves trainees operational competency, procedural efficiency, and teaching satisfaction, demonstrating superiority in comprehensive training outcomes over traditional methods. However, for consolidating theoretical knowledge, optimization through integration with traditional lecture-based teaching remains necessary.
    • WANG Bingyou1, TAN Yunlian2, YU Jiang3, ZENG Hesong4, WANG Yan4, LEI Lei4
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      Selenium is an essential trace element for the human body. It exerts biological functions in the form of selenoproteins, including antioxidant effect and mitochondrial membrane stabilization. This article explores the latest research advances in the association between selenium and human cardiovascular diseases from two perspectives: the role of selenium in the human body, and the impact of selenium deficiency on the occurrence and development of cardiovascular disorders. It elaborates on the roles of selenium deficiency in the pathogenesis and progression of conditions such as atherosclerosis, coronary heart disease, cardiac dysfunction, and Keshan disease. Additionally, it addresses the preventive effects of seleniumenriched products on cardiovascular diseases.
    • QIAN Jingrong1, ZHANG Qi1, YANG Xuli1, LIU Qifeng1, 2
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      Vascular calcification is a common complication in patients with chronic kidney disease (CKD). With the progression of CKD, both the incidence and severity of vascular calcification gradually increase, which seriously affects the prognosis of patients. However, there are currently no clinically proven therapies specifically targeting vascular calcification for improvement. Klotho is a protein possessing functions such as antioxidant, anti-inflammatory, and regulation of calcium-phosphate metabolism. It modulates multiple calcification-related pathways, including fibroblast growth factor-23, Runt-related transcription factor 2, Wnt/β-catenin, phosphate transporters, and the receptor activator of nuclear factor κB, thereby inhibiting the formation of vascular calcification. Consequently, Klotho may be a promising novel therapeutic target for vascular calcification. This article reviews the role of Klotho in inhibiting vascular calcification and its underlying mechanisms in CKD patients.
    • WANG Wei1, GAO Yulian2, CHU Yanpeng3
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      Postoperative conduction block is a critical complication in patients with WolffParkinsonWhite syndrome (WPW) undergoing radiofrequency catheter ablation (RFCA), potentially resulting in permanent pacemaker implantation. To enhance procedural safety and improve patients' prognosis, a profound understanding of its mechanisms and precise risk prediction are vitally important. This paper reviews the mechanisms and risk prediction of conduction block after RFCA in WPW patients. It systematically analyzes contributing factors for postoperative conduction block, including the anatomical site characteristics of abnormal atrioventricular accessory pathways, ablation-energy-induced injury, and intraoperative procedure-related risks. By integrating existing evidences, this paper aims to provide clinicians with a more comprehensive risk assessment framework and preventive strategies to guide individualized surgical planning, minimize the risk of conduction block, and thereby improve clinical outcomes.
    • GUO Shuke1, XUEKELATI Saiyare1, XU Qihong1, KE Jiayu1, WANG Hongmei2
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      With the acceleration of population aging, oral frailty has emerged as a novel concept in the field of frailty. It specifically refers to age-related degenerative oral dysfunction prevalent among older adults. Oral frailty is closely associated with multiple geriatric syndromes, including physical frailty, malnutrition, cognitive impairment, fall risk, and polypharmacy. This article systematically reviews the definition, epidemiological characteristics and assessment tools of oral frailty, and the mechanism of correlation between oral frailty and geriatric syndrome. It aims to investigate potential influencing factors of oral frailty and its interactions with agerelated diseases. By emphasizing the pivotal role of oral health in overall geriatric wellbeing, this review offers new perspectives for oral health management in older populations. Through scientific interventions, it seeks to delay functional decline, enhance quality of life, and ultimately promote the realization of the goal of healthy aging.
    • NIJIATI Abidan1, FENG Yan2
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      Triglyceride-glucose (TyG) index, recognized as a reliable biomarker of insulin resistance, is gaining increasing clinical attention. TyG index is closely related to the onset, progression, and prognosis of various diseases including cardiovascular disease, insulin resistance-related metabolic disorder, non-alcoholic fatty liver disease, and obesity. This paper reviews the potential role of TyG index in early screening and prognostic evaluation of cardiovascular disease, insulin resistance-related metabolic disorder, and other diseases.
    • LI Xiumei1, YANG Zhen2
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      Atrial fibrillation (AF) and heart failure (HF) often coexist and interact through complex pathophysiological mechanisms, forming a vicious circle. Given that the concomitant presence of AF and HF could worsen HF symptoms, deteriorate cardiac function, reduce quality of life, and even increase stroke risk of patients, resulting in increased hospitalization rate and all-cause mortality, we should take aggressive treatment strategies. Rhythm control is critical in patients with AF complicated by HF. Although radiofrequency catheter ablation has demonstrated significant efficacy in maintaining sinus rhythm, its efficacy on this kind of patients remains unclear at present. This article reviews recent research advances in the epidemiology, pathophysiological mechanisms, and radiofrequency catheter ablation therapy of AF in the context of concomitant HF.