Forests exert significant biogeophysical cooling effects(CE)through processes such as increased evapotranspiration,reduced albedo,and enhanced surface roughness.However,little is known about the extent to which elevat...Forests exert significant biogeophysical cooling effects(CE)through processes such as increased evapotranspiration,reduced albedo,and enhanced surface roughness.However,little is known about the extent to which elevation-induced temperature differences bias the observed CE and how this bias interacts with the underlying biogeophysical mechanisms.In this study,we integrated multisensor remote sensing products and Shuttle Radar Topography Mission(SRTM)elevation data on the Google Earth Engine(GEE)platform,and applied a spatial-temporal window regression approach to quantify and correct the sensitivity of land surface temperature(LST)to elevation for forest pixels across China from 2001 to 2022.First,we found that forest LST exhibited a significant negative relationship with elevation,leading to systematic CE overestimation by 0.61 K during the day and 0.60 K at night compared with altitudecorrected CE values.Second,after correction,the CE showed clear spatial heterogeneity,with stronger daytime cooling in tropical(-0.54 K)and temperate forests(-0.24 K),and warming in cold(+0.11 K)and arid regions(+0.53 K),while most regions experienced nighttime warming.Among forest types,evergreen needleleaf forests(ENF)exhibited the strongest daytime cooling(-0.36 K),whereas deciduous broadleaf(DBF)and open shrublands(OS)tended to warm.Third,mechanism analysis revealed that elevation correction strengthened the correlations of CE with leaf area index(LAI)and evapotranspiration,while maintaining a significant negative correlation with albedo,indicating that both radiative and non-radiative processes jointly shape the unbiased CE.These findings provide a more accurate quantification of forest CE by eliminating elevation-induced bias,which providing a more accurate assessment of the climate mitigation potential of forests,which is crucial for developing more effective forest management and ecological restoration strategies.展开更多
BACKGROUND The incidence of acute myocardial infarction(AMI)is rising,with cardiac rupture accounting for approximately 2%of deaths in patients with acute ST-segment elevation myocardial infarction(STEMI).Ventricular ...BACKGROUND The incidence of acute myocardial infarction(AMI)is rising,with cardiac rupture accounting for approximately 2%of deaths in patients with acute ST-segment elevation myocardial infarction(STEMI).Ventricular free wall rupture(FWR)occurs in approximately 2%of AMI patients and is notably rare in patients with non-STEMI.Types of cardiac rupture include left ventricular FWR,ventricular septal rupture,and papillary muscle rupture.The FWR usually leads to acute cardiac tamponade or electromechanical dissociation,where standard resuscitation efforts may not be effective.Ventricular septal rupture and papillary muscle rupture often result in refractory heart failure,with mortality rates over 50%,even with surgical or percutaneous repair options.CASE SUMMARY We present a rare case of an acute non-STEMI patient who suffered sudden FWR causing cardiac tamponade and loss of consciousness immediate before undergoing coronary angiography.Prompt resuscitation and emergency open-heart repair along with coronary artery bypass grafting resulted in successful patient recovery.CONCLUSION This case emphasizes the risks of AMI complications,shares a successful treatment scenario,and discusses measures to prevent such complications.展开更多
Allium stracheyi(Baker)is widely utilized as a culinary herb and is typically encountered in the higher elevations of the Himalayas.Consequently,it is of great significance to compare the ecological adaptability of th...Allium stracheyi(Baker)is widely utilized as a culinary herb and is typically encountered in the higher elevations of the Himalayas.Consequently,it is of great significance to compare the ecological adaptability of this indigenous species to alternative habitats and its introduction into new environments.This research aims to investigate and gain a comprehensive understanding of A.stracheyi,also known as faran,in Uttarakhand region.We aim to examine how this plant adapts morphologically,physiologically,biochemically,and anatomically to varying elevations,specifically at 550,2200,2460,and 3400 m above mean sea level(m AMSL).This plant demonstrated remarkable morphophysiological adjustments across various aspects of its development,encompassing modified growth patterns,alterations in leaf dimensions,leaf count,etc..Moreover,biochemical adaptations have been identified as pivotal in bolstering the plant resilience to the stress associated with higher elevation.Enzymes like superoxide dismutase(SOD)and peroxidase(POD)exhibited significant responsiveness to elevational variations,contributing to the plant's ability to confront the challenges posed by high-elevational conditions.In terms of anatomy,the plant manifested alterations in its leaf and vascular tissues along the elevational gradient.These modifications involve an increased density of stomata and a greater count of vascular bundles,optimizing gas exchange and adaptation to water stress in frequently encountered harsh environmental conditions at higher elevations.Understanding the adaptive mechanisms employed by A.stracheyi provides valuable insights,especially in forecasting how A.stracheyi might respond to global climate change,particularly in regions affected by habitat fragmentation.展开更多
Satellites in LEO (Low Earth Orbits) are closest to the Earth’s surface, having the smallest coverage area compared to other orbits, depending on altitude and elevation angle, and providing relatively too short visib...Satellites in LEO (Low Earth Orbits) are closest to the Earth’s surface, having the smallest coverage area compared to other orbits, depending on altitude and elevation angle, and providing relatively too short visibility and communication duration, in range of (2 - 15) minutes. Communication duration represents the key performance indicator for LEO satellite communication systems. For longer communication sessions, more satellites must be involved, and the signals must be handed over from one satellite to the next to provide uninterrupted real-time services to the appropriate user or ground station. This leads to the concept and structure of the satellites organized in the constellation. Communication window (visibility window) depends on the designed horizon plane width determined by licensed elevation angle. For the appropriate calculations, a satellite from the Starlink constellation at altitude of 550 km is considered, observed under licensed designed elevations of 40˚ and 25˚. Calculations under two designed elevation levels confirmed the wider horizon and consequently longer communication under the lower elevation.展开更多
Ice shelves are important passageways for ice sheets flowing into the ocean.Through iceberg calving and basal melting,ice shelves exert considerable influence on the mass balance of the Antarctic Ice Sheet and glacier...Ice shelves are important passageways for ice sheets flowing into the ocean.Through iceberg calving and basal melting,ice shelves exert considerable influence on the mass balance of the Antarctic Ice Sheet and glacier stability.The Ross Ice Shelf(RIS),the largest body of floating ice on Earth,plays an essential role in any changes in the mass balance of the Antarctic Ice Sheet.The long-term elevation change trend of RIS has been calculated with multiple satellite altimetry in previous studies.However,the seasonal variations were less revealed.Based on crossover analysis and indirect observation adjustments,this study proposed a new method for constructing seasonal records for surface elevation changes in the RIS using ICESat laser altimetry data from 2003 to 2009.The results showed that surface elevation changes exhibited seasonal variations with fluctuations over 20 cm,and the seasonal change characteristics were closely related to the temperature.Interannual variations in RIS surface elevation decreased from 2003 to2009 at a rate of 2 cm/yr.From March 2003 to April 2007,the surface elevation decreased at 3.7 cm/yr;however,after April 2007,the surface elevation increased at 5.5 cm/yr.The more recent stages of surface elevation growth have been influenced by reductions in the summer basal melt,which is related to the decreases in ocean heat content.展开更多
Climate warming causes mountainous species to shift their distributions towards higher elevations.How elevation influences growth-climate relationship in mountain regions has been intensively investigated.However,how ...Climate warming causes mountainous species to shift their distributions towards higher elevations.How elevation influences growth-climate relationship in mountain regions has been intensively investigated.However,how microtopography shapes tree growth and its drought resistance along the elevation gradient remains poorly understood.We used a network of Larix principis-rupprechtii tree-ring data comprising 1,918 trees from different age classes and mountain slopes,along an elevation gradient ranging from 970 to 1,869 m,to investigate how slope gradients mediate the growth and drought resilience of larch trees along an elevation gradient in North China.Growing season drought and temperature were the major limiting climatic factors for larch trees across the study region.Larch trees younger than 40 years exhibited a stronger positive correlation between basal area increment(BAI)and elevation on steep slopes(10°-35°)than on flat(0°-5°)or gentle(5°-10°)slopes.At low-elevation steep slopes,the growth of larch trees younger than 40 years showed a stronger correlation with the Palmer drought severity index(PDSI).Both resistance and resilience were found to increase along the elevation gradient on steep slopes for young larch trees but not for old larch trees.No significant differences were observed in the drought recovery ability of larch trees across all age groups at increasing elevation.Our results highlight that drought events may particularly affect the growth of young larch trees on low-elevation steep slopes,with potential repercussions on mortality rates.展开更多
Although the Vietnamese Mekong Delta(VMD)is recognised as one of the world’s most vulnerable deltas,scholars have yet to provide an integrated diagnosis linking locally driven pressures to actionable pathways for hal...Although the Vietnamese Mekong Delta(VMD)is recognised as one of the world’s most vulnerable deltas,scholars have yet to provide an integrated diagnosis linking locally driven pressures to actionable pathways for halting its rapid elevation loss.The VMD—39,000 km²that feeds 18 million people—is sinking because four pressures act in concert:upstream dams have already cut sediment delivery by 70%–83%(projected 96%if all planned projects proceed),mean sea level is rising 1.5–2 cm/yr,river-bed sand mining now removes about 3 Mm³/yr and deepens channels by up to 15 cm/yr,and groundwater withdrawals of approximately 2.5 Mm³/day have accelerated land-surface subsidence from smaller than 3 cm/yr in 2006–2010 to peaks of 5–6 cm/yr today.Scenario modelling shows that halving pumping would stabilize aquifer heads and cut subsidence by about 50%within a decade,while provincial sand-quota cuts of 30%–50%would slow bed incision and ease salinity intrusion,reducing the irrigation deficits that drive further pumping.While the large-scale causes of subsidence(dams,sea level rise,sand mining,groundwater extraction)are well recognized,actionable,local-level management solutions to immediately slow subsidence and salinity intrusion—independent of slow international negotiations—have been underexplored and under-implemented.Because dam and climate remedies rely on slow transboundary negotiations,we target the more practical local pressures—sand mining and groundwater extraction—by first tightening sand-mining licenses,enforcing tiered groundwater tariffs,and scaling up rain-and surface-water alternatives,buying time for longer-term basin and climate agreements.These locally actionable measures can significantly reduce subsidence and provide a scalable model for sustaining deltas around the world.展开更多
Land subsidence significantly impacts the accuracy of the National Elevation Datum in China.In order to solve this issue,a dynamic and economical way was proposed to update the National Elevation Datum with the assist...Land subsidence significantly impacts the accuracy of the National Elevation Datum in China.In order to solve this issue,a dynamic and economical way was proposed to update the National Elevation Datum with the assistance of InSAR in the North China Plain,which served as the research area.Moreover,the GNSS result was used to correct the InSAR result for the vertical deformation field,which has a relatively unified deformation reference.By integrating the vertical deformation field with the national elevation control point,an analysis and evaluation of changes in the National Elevation Datum were conducted.In addition,a regional remeasurement scheme was formulated to achieve dynamic updates and mainte-nance of the National Elevation Datum on a regional scale.Through data acquisition and processing,we successfully improved reliability within the main subsidence areas for future use.As a result,updating the elevation values utilize a regional update method,and a dynamic and economical technical process to update the National Elevation Datum is shown in the study.展开更多
BACKGROUND Primary percutaneous coronary intervention(PCI)is the preferred treatment for ST-segment elevation myocardial infarction(STEMI).However,in patients with high thrombus burden,immediate stenting during PCI ca...BACKGROUND Primary percutaneous coronary intervention(PCI)is the preferred treatment for ST-segment elevation myocardial infarction(STEMI).However,in patients with high thrombus burden,immediate stenting during PCI can lead to poor outcomes due to the risk of thrombus migration and subsequent microvascular occlusion,resulting in no-reflow phenomena.Deferred stenting offers a potential advantage by allowing for the reduction of thrombus load,which may help to minimize the incidence of slow-flow and no-reflow complications.This study explores the effectiveness of a deferred stenting strategy in improving outcomes for STEMI patients.AIM To evaluate the effectiveness and safety of deferred PCI in a real-world setting in acute STEMI patients.METHODS RESULTS Anterior wall myocardial infarction was the predominant type of STEMI in 62%of the selected 55 patients(mean age:54 years;70%males),and diabetes mellitus was the most common risk factor(18.2%),followed by hypertension(16.2%).On the second angiogram of these patients measures of thrombus grade,thrombolysis in myocardial infarction flow grade,myocardial blush grade,and severity of stenosis of culprit lesion were consid-erably improved compared to the first angiogram,and the average culprit artery diameter had increased by 7.8%.Most patients(60%)had an uneventful hospital stay during the second angiogram and an uneventful intrapro-cedural course(85.19%),with slow-flow/no-reflow occurring only in 7.4%of the patients;these patients recovered after taking vasodilator drugs.In 29.3%of patients,the culprit artery was recanalized,preventing unnecessary stent deployment.CONCLUSION Deferred PCI strategy is safe and reduces the thrombus burden,improves thrombolysis in myocardial infarction(TIMI)flow,improves myocardial blush grade,and prevents unwarranted stent deployment.展开更多
Elevation change monitoring of the Antarctic ice sheet has been a key issue in global change research.Satellite altimetry has been proven to be effective in detecting ice sheet variations. With the development of ICES...Elevation change monitoring of the Antarctic ice sheet has been a key issue in global change research.Satellite altimetry has been proven to be effective in detecting ice sheet variations. With the development of ICESat-2, many elevation observations can be used to derive elevation changes. However, the large amount of multitemporal data may include anomalous data points, increasing the uncertainty of the results. In this work, we improved the traditional repeat track method by introducing the Institute of Geodesy and Geophysics Ⅲ(IGGⅢ) method to obtain high-accuracy estimates of elevation change. The improved method was applied to analyze elevation changes along the transect from Zhongshan Station to Dome A in East Antarctica via ICESat-2 satellite altimetry data. The results show that the improved and traditional methods yield consistent numerical and spatial elevation change distributions. The elevation change calculated via the traditional method is 0.033 ± 0.131 m/yr, whereas the elevation change estimated via the IGGⅢ robust estimation method is 0.033 ± 0.109 m/yr from March 2019 to December 2021.In terms of spatial distribution, elevation changes in inland areas remain close to equilibrium, whereas regions with steeper ice sheet margins exhibit positive accumulation trends in elevation changes. The improved method reduces the standard error of the adjustment function from 0.975 to 0.691 m/yr. The improvement is particularly remarkable in the area between 72°S and 77°S. The results demonstrate that the IGGⅢ method effectively reduces errors caused by the inclusion of anomalous data and maintains the high data utilization rate of repeat-orbit methods.展开更多
Extreme weather events pose an ever-greater threat to people,infrastructure,and nature.Forest ecosystems are highly sensitive to extreme cold events that can disrupt ecosystem functions,especially in montane regions.I...Extreme weather events pose an ever-greater threat to people,infrastructure,and nature.Forest ecosystems are highly sensitive to extreme cold events that can disrupt ecosystem functions,especially in montane regions.Ice storms can be particularly destructive,with rapid ice accretion causing tree branches to break,even snapping or uprooting entire trees.In March 2022,the Shennongjia forest in central China experienced severe ice storm conditions that severely damaged over 230,300ha.We utilized this opportunity to assess the vulnerability of different tree types(coniferous,deciduous,and evergreen broad-leaved)and stand compositions to damage resulting from ice glaze along an elevation gradient from 1,200 to 2,400m a.s.l.Among the 7,144 trees surveyed,10.1%suffered some extent of damage,which was most prolific in the middle elevation zone.While 96.8%of all damage occurred to deciduous broadleaved trees that dominated the forest community,the most severe damage(uprooting and lower trunk breakage)occurred to coniferous trees.The extent and severity of tree damage were moderated by forest composition,with secondary effects of forest structure and slope.Abiotic factors predominantly affected coniferous trees.We emphasize that more research and monitoring are needed to better understand the full impact of extreme weather events on forests,especially as the frequency and intensity of these events increases due to climate change.展开更多
Climate change in High Mountain Asia(HMA)is characterized by elevation dependence,which results in vertical zoning of vegetation distribution.However,few studies have been conducted on the distribution patterns of veg...Climate change in High Mountain Asia(HMA)is characterized by elevation dependence,which results in vertical zoning of vegetation distribution.However,few studies have been conducted on the distribution patterns of vegetation,the response of vegetation to climate change,and the key climatic control factors of vegetation along the elevation gradient in this region.In this study,based on the Normalized Difference Vegetation index(NDVI),we investigated the evolution pattern of vegetation in HMA during 2001-2020 using linear trend and Bayesian Estimator of Abrupt change,Seasonality,and Trend(BEAST)methods.Pearson correlation analysis and partial correlation analysis were used to explore the response relationship between vegetation and climatic factors along the elevation gradient.Path analysis was employed to quantitatively reveal the dominant climatic factors affecting vegetation distribution along the elevation gradient.The results showed that NDVI in HMA increased at a rate of 0.011/10a from 2001 to 2020,and the rate of increase abruptly slowed down after 2017.NDVI showed a fluctuating increase at elevation zones 1-2(<2500 m)and then decreased at elevation zones 3-9(2500-6000 m)with the increase of elevation.NDVI was most sensitive to precipitation and temperature at a 1-month lag.With the increase of elevation,the positive response relationship of NDVI with precipitation gradually weakened,while that of NDVI with temperature was the opposite.The total effect coefficient of precipitation(0.95)on vegetation was larger than that of temperature(0.87),indicating that precipitation is the dominant control factor affecting vegetation growth.Spacially,vegetation growth is jointly influenced by precipitation and temperature,but the influence of precipitation on vegetation growth is dominant at each elevation zone.The results of this study contribute to understanding how the elevation gradient effect influences the response of vegetation to climate change in alpine ecosystems.展开更多
AIM:To investigate the changes in posterior corneal elevation within 6mo after small incision lenticule extraction(SMILE)surgery for myopia and myopic astigmatism in patients with thin corneas.METHODS:A prospective st...AIM:To investigate the changes in posterior corneal elevation within 6mo after small incision lenticule extraction(SMILE)surgery for myopia and myopic astigmatism in patients with thin corneas.METHODS:A prospective study included patients with thin corneas(preoperative thinnest corneal thickness ranging from 480 to 520μm)who underwent SMILE for myopia or myopic astigmatism.Corneal topography and posterior corneal elevation were assessed using Pentacam HR at three time points:preoperatively,1mo,and 6mo postoperatively.The measured parameters included thinnest point elevation(PTE),posterior maximal elevation(PME),posterior central elevation(PCE),and 24 additional reference points.RESULTS:A total of 106 eyes from 106 patients(age range:18-34)were included in the study.Uncorrected distance visual acuity(UDVA)improved significantly,with a mean logMAR value of-0.07±0.06 at the final follow-up visit.Measurements of posterior corneal elevation showed no significant changes in most points,hemispheres,and meridians at 6mo postoperatively.Notably,only two points,ΔE_(2mm-45°)andΔE_(2mm-90°),exhibited statistically significant elevation changes:the elevation ofΔE_(2mm-45°)increased from-2.3±4.99 to-1.0±5.9μm(P=0.0037),and that ofΔE_(2mm-90°)increased from-16±7.53 to-15±7.4μm(P=0.016).However,these changes were within the measurement error range of the Pentacam HR(±5μm in a 5 mm area).CONCLUSION:SMILE surgery is a safe and stable procedure for correcting myopia or myopic astigmatism in patients with thin corneas,as evidenced by the stability of posterior corneal elevation.展开更多
Currently,the worldwide prevalence of morbid obesity has increased.1 The National Health and Nutrition Examination Survey from the Centers for Disease Control and Prevention revealed that the prevalence of obesity in ...Currently,the worldwide prevalence of morbid obesity has increased.1 The National Health and Nutrition Examination Survey from the Centers for Disease Control and Prevention revealed that the prevalence of obesity in the adult population between 20 and 74 years old had more than doubled from 13.3%to 31.1%from 1960 to 2002.2 Metabolic and bariatric surgery(MBS)is now suggested for patients with a body mass index(BMI)of more than 35 kg/m2,comorbidities or no comorbidities.Furthermore,MBS should be offered to people with metabolic disease and a BMI of 30e34.9 kg/m2 who have failed to gain a meaningful amount of weight or have failed to keep it off with non-surgical management.However,the BMI cutoff points should be modified for the Asian population.展开更多
Background Elderly patients(age≥60 years)with ST-segment elevation myocardial infarction(STEMI)are at an elevated risk of mortality.This study aimed to investigate the association of the creatinine to ejection fracti...Background Elderly patients(age≥60 years)with ST-segment elevation myocardial infarction(STEMI)are at an elevated risk of mortality.This study aimed to investigate the association of the creatinine to ejection fraction ratio(CER)with in-hospital and 1-year death in elderly patients with STEMI.Methods A total of 753 consecutive elderly patients(age≥60 years)with STEMI undergoing percutaneous coronary intervention(PCI)were enrolled and divided into three groups according to the tertiles of CER at admission:<1.5(n=250),1.5-2.2(n=249)and>2.2(n=254).Multivariate analyses were performed to evaluate the prognostic value of CRE for short-term death in this population.Results The in-hospital and 1-year mortality reached 6.0%and 13.3%,respectively.Patients with higher CER exhibited a higher in-hospital mortality(0.8%vs.2.8%vs.14.2%,P<0.001).An optimal cut-off value of 2.5 for CER was identified for predicting in-hospital death by receiver operating characteristic curve analysis,yielding a sensitivity of 77.8%and a specificity of 76.1%[area under curve(AUC):0.791,95%confidence interval(CI):0.734-0.847,P<0.001].Multivariate regression analyses revealed that CER>2.5 was an independent risk factor for both in-hospital[adjusted odds ratio(OR):9.006,95%CI:2.707-29.967,P<0.001]and 1-year mortality[adjusted hazard ratio(HR):5.082,95%CI:2.462-10.490,P<0.001].Conclusions Elevated CER is associated with adverse short-term mortality in elderly STEMI patients undergone PCI,offering valuable insights for the early identification and management of high-risk individuals in clinical practice.展开更多
Micro-short dramas have created a context for the international communication of China’s fine traditional culture,addressing“what to say,”“how to say it,”and“why to say it.”However,a systematic path for interna...Micro-short dramas have created a context for the international communication of China’s fine traditional culture,addressing“what to say,”“how to say it,”and“why to say it.”However,a systematic path for international cultural communication has yet to be established.By taking micro-short dramas as a medium and drawing on a three-tier cultural dimensional elevation model of“symbol cognition-narrative circulation-cultural identity,”this paper explores the natural internalization process from symbol cognition to cultural identity among audiences during the international communication of China’s fine traditional culture.Research shows that micro-short dramas have established a cultural cognitive interface for international audiences through the innovative use of symbols related to China’s fine traditional culture.The use of internet-based narratives has enabled cross-contextual reinterpretation and emotional resonance of China’s fine traditional culture.Furthermore,integration and reconstruction have facilitated cultural identity among international audiences regarding China’s fine traditional culture.The interplay of these three aspects forms a three-tier path for cultural dimensional elevation in the international communication of China’s fine traditional culture through micro-short dramas.This path can effectively reduce cultural discount and contribute to the paradigm shift of China’s fine traditional culture from geographical expansion to cultural identity.展开更多
Background:Left atrioventricular coupling index(LACI)is a promising marker for predicting major adverse cardiac events in individuals with acute ST-segment elevation myocardial infarction(STEMI).However,the relationsh...Background:Left atrioventricular coupling index(LACI)is a promising marker for predicting major adverse cardiac events in individuals with acute ST-segment elevation myocardial infarction(STEMI).However,the relationship between LACI and adverse left ventricular(LV)remodeling(ALVR)in patients with STEMI remains to be fully elucidated.Methods:In this retrospective study,143 patients with STEMI who had undergone primary percutaneous coronary inter-vention(PCI)underwent cardiovascular magnetic resonance(CMR)imaging.The examinations were performed at 5±2 days(baseline)after PCI and at 6 months after STEMI.Left atrial and LV structural and functional indicators were evaluated.ALVR was defined as an increase of≥20%in LV end-diastolic volume(LVEDV)or an increase of≥15%in LV end-systolic volume at 6 months on CMR images.The patients were divided into two groups depending on the presence or absence of ALVR,and the CMR features were compared between the two groups.Results:Overall,51 patients(mean age 57±11 years;42 men)experienced ALVR after 6 months.In the univariable regression analysis,LVEDV index and LACI were significantly correlated with ALVR(odds ratio[OR]:0.989,95%confidence interval[CI]:0.979-0.999,p=0.025;OR:1.046,95%CI:1.012-1.080,p=0.007,respectively).Following adjustment for fundamental clinical variables,multivariate logistic regression analysis showed that baseline LACI was an independent predictor of ALVR at 6 months(OR:1.324,95%CI:1.055-1.662,p=0.016).Conclusions:CMR-derived LACI in patients with acute STEMI was an independent predictor of ALVR.展开更多
Kounis syndrome(KS)is a rare but clinically significant condition characterized by the simultaneous occurrence of acute coronary syndrome(ACS)and allergic reactions,which can develop in patients with either normal or ...Kounis syndrome(KS)is a rare but clinically significant condition characterized by the simultaneous occurrence of acute coronary syndrome(ACS)and allergic reactions,which can develop in patients with either normal or diseased coronary arteries.[1,2]The condition is typically triggered by various allergens including medications(particularly contrast media),environmental factors,or food exposures,with symptom onset usually occurring within one hour of exposure.展开更多
基金Under the auspices of National Social Sciences Foundation of China(No.21BJY114)。
文摘Forests exert significant biogeophysical cooling effects(CE)through processes such as increased evapotranspiration,reduced albedo,and enhanced surface roughness.However,little is known about the extent to which elevation-induced temperature differences bias the observed CE and how this bias interacts with the underlying biogeophysical mechanisms.In this study,we integrated multisensor remote sensing products and Shuttle Radar Topography Mission(SRTM)elevation data on the Google Earth Engine(GEE)platform,and applied a spatial-temporal window regression approach to quantify and correct the sensitivity of land surface temperature(LST)to elevation for forest pixels across China from 2001 to 2022.First,we found that forest LST exhibited a significant negative relationship with elevation,leading to systematic CE overestimation by 0.61 K during the day and 0.60 K at night compared with altitudecorrected CE values.Second,after correction,the CE showed clear spatial heterogeneity,with stronger daytime cooling in tropical(-0.54 K)and temperate forests(-0.24 K),and warming in cold(+0.11 K)and arid regions(+0.53 K),while most regions experienced nighttime warming.Among forest types,evergreen needleleaf forests(ENF)exhibited the strongest daytime cooling(-0.36 K),whereas deciduous broadleaf(DBF)and open shrublands(OS)tended to warm.Third,mechanism analysis revealed that elevation correction strengthened the correlations of CE with leaf area index(LAI)and evapotranspiration,while maintaining a significant negative correlation with albedo,indicating that both radiative and non-radiative processes jointly shape the unbiased CE.These findings provide a more accurate quantification of forest CE by eliminating elevation-induced bias,which providing a more accurate assessment of the climate mitigation potential of forests,which is crucial for developing more effective forest management and ecological restoration strategies.
文摘BACKGROUND The incidence of acute myocardial infarction(AMI)is rising,with cardiac rupture accounting for approximately 2%of deaths in patients with acute ST-segment elevation myocardial infarction(STEMI).Ventricular free wall rupture(FWR)occurs in approximately 2%of AMI patients and is notably rare in patients with non-STEMI.Types of cardiac rupture include left ventricular FWR,ventricular septal rupture,and papillary muscle rupture.The FWR usually leads to acute cardiac tamponade or electromechanical dissociation,where standard resuscitation efforts may not be effective.Ventricular septal rupture and papillary muscle rupture often result in refractory heart failure,with mortality rates over 50%,even with surgical or percutaneous repair options.CASE SUMMARY We present a rare case of an acute non-STEMI patient who suffered sudden FWR causing cardiac tamponade and loss of consciousness immediate before undergoing coronary angiography.Prompt resuscitation and emergency open-heart repair along with coronary artery bypass grafting resulted in successful patient recovery.CONCLUSION This case emphasizes the risks of AMI complications,shares a successful treatment scenario,and discusses measures to prevent such complications.
基金supported by Uttarakhand Council for Biotechnology(grant number UCB/R&D PROJECT/2022/20 dated 06.05.2022).
文摘Allium stracheyi(Baker)is widely utilized as a culinary herb and is typically encountered in the higher elevations of the Himalayas.Consequently,it is of great significance to compare the ecological adaptability of this indigenous species to alternative habitats and its introduction into new environments.This research aims to investigate and gain a comprehensive understanding of A.stracheyi,also known as faran,in Uttarakhand region.We aim to examine how this plant adapts morphologically,physiologically,biochemically,and anatomically to varying elevations,specifically at 550,2200,2460,and 3400 m above mean sea level(m AMSL).This plant demonstrated remarkable morphophysiological adjustments across various aspects of its development,encompassing modified growth patterns,alterations in leaf dimensions,leaf count,etc..Moreover,biochemical adaptations have been identified as pivotal in bolstering the plant resilience to the stress associated with higher elevation.Enzymes like superoxide dismutase(SOD)and peroxidase(POD)exhibited significant responsiveness to elevational variations,contributing to the plant's ability to confront the challenges posed by high-elevational conditions.In terms of anatomy,the plant manifested alterations in its leaf and vascular tissues along the elevational gradient.These modifications involve an increased density of stomata and a greater count of vascular bundles,optimizing gas exchange and adaptation to water stress in frequently encountered harsh environmental conditions at higher elevations.Understanding the adaptive mechanisms employed by A.stracheyi provides valuable insights,especially in forecasting how A.stracheyi might respond to global climate change,particularly in regions affected by habitat fragmentation.
文摘Satellites in LEO (Low Earth Orbits) are closest to the Earth’s surface, having the smallest coverage area compared to other orbits, depending on altitude and elevation angle, and providing relatively too short visibility and communication duration, in range of (2 - 15) minutes. Communication duration represents the key performance indicator for LEO satellite communication systems. For longer communication sessions, more satellites must be involved, and the signals must be handed over from one satellite to the next to provide uninterrupted real-time services to the appropriate user or ground station. This leads to the concept and structure of the satellites organized in the constellation. Communication window (visibility window) depends on the designed horizon plane width determined by licensed elevation angle. For the appropriate calculations, a satellite from the Starlink constellation at altitude of 550 km is considered, observed under licensed designed elevations of 40˚ and 25˚. Calculations under two designed elevation levels confirmed the wider horizon and consequently longer communication under the lower elevation.
基金supported by the National Key Research and Development Program of China under grant numbers 2023YFC2809103 and 2024YFC2813505the National Natural Science Foundation of China under the grant number 41706216+2 种基金the Fundamental Research Funds for the Central Universities under grant numbers 2042022kf1204,2042022kf1069,2042023gf0012,2042022dx0001the Hubei Provincial Natural Science Foundation of China under grant number 2022CFB081the State Key Laboratory of Geodesy and Earth's Dynamics,Innovation Academy for Precision Measurement Science and Technology under grant number SKLGED2023-2-6。
文摘Ice shelves are important passageways for ice sheets flowing into the ocean.Through iceberg calving and basal melting,ice shelves exert considerable influence on the mass balance of the Antarctic Ice Sheet and glacier stability.The Ross Ice Shelf(RIS),the largest body of floating ice on Earth,plays an essential role in any changes in the mass balance of the Antarctic Ice Sheet.The long-term elevation change trend of RIS has been calculated with multiple satellite altimetry in previous studies.However,the seasonal variations were less revealed.Based on crossover analysis and indirect observation adjustments,this study proposed a new method for constructing seasonal records for surface elevation changes in the RIS using ICESat laser altimetry data from 2003 to 2009.The results showed that surface elevation changes exhibited seasonal variations with fluctuations over 20 cm,and the seasonal change characteristics were closely related to the temperature.Interannual variations in RIS surface elevation decreased from 2003 to2009 at a rate of 2 cm/yr.From March 2003 to April 2007,the surface elevation decreased at 3.7 cm/yr;however,after April 2007,the surface elevation increased at 5.5 cm/yr.The more recent stages of surface elevation growth have been influenced by reductions in the summer basal melt,which is related to the decreases in ocean heat content.
基金funded by the National Natural Science Foundation of China(No.U24A20353)the S&T Program of Hebei(Nos.226Z6801G,C2021204002,and 20210365)+1 种基金the Talent Introduction Program in Hebei Agricultural University(No.YJ201918)supported by the SERI-funded ERC Starting Grant,project MB23.00011.
文摘Climate warming causes mountainous species to shift their distributions towards higher elevations.How elevation influences growth-climate relationship in mountain regions has been intensively investigated.However,how microtopography shapes tree growth and its drought resistance along the elevation gradient remains poorly understood.We used a network of Larix principis-rupprechtii tree-ring data comprising 1,918 trees from different age classes and mountain slopes,along an elevation gradient ranging from 970 to 1,869 m,to investigate how slope gradients mediate the growth and drought resilience of larch trees along an elevation gradient in North China.Growing season drought and temperature were the major limiting climatic factors for larch trees across the study region.Larch trees younger than 40 years exhibited a stronger positive correlation between basal area increment(BAI)and elevation on steep slopes(10°-35°)than on flat(0°-5°)or gentle(5°-10°)slopes.At low-elevation steep slopes,the growth of larch trees younger than 40 years showed a stronger correlation with the Palmer drought severity index(PDSI).Both resistance and resilience were found to increase along the elevation gradient on steep slopes for young larch trees but not for old larch trees.No significant differences were observed in the drought recovery ability of larch trees across all age groups at increasing elevation.Our results highlight that drought events may particularly affect the growth of young larch trees on low-elevation steep slopes,with potential repercussions on mortality rates.
基金supported by various grants from the Ministry of Education,Singapore,under its Academic Research#Tier 1[RG 142/22],#Tier 2[MOE-T2EP50222-0007]#Tier 3 Climate Transformation Programme[MOET32022-0006]NIE AcRF-RI 10/22 EP,NIE AcRF-RI 9/24 EP and the Earth Observatory of Singapore(EOS)via its funding from the National Research Foundation Singapore and the Singapore Ministry of Education under the Research Centres of Excellence initiative.This work comprises EOS Contribution number 660.PSJM is supported by the Netherlands Science Foundation(NWO)Drowning Deltas project(NWO-Veni-TTW-2022 No 20231).Any opinions,findings,conclusions,or recommendations expressed in this research are those of the authors and do not reflect the views of the Ministry of Education,Singapore.
文摘Although the Vietnamese Mekong Delta(VMD)is recognised as one of the world’s most vulnerable deltas,scholars have yet to provide an integrated diagnosis linking locally driven pressures to actionable pathways for halting its rapid elevation loss.The VMD—39,000 km²that feeds 18 million people—is sinking because four pressures act in concert:upstream dams have already cut sediment delivery by 70%–83%(projected 96%if all planned projects proceed),mean sea level is rising 1.5–2 cm/yr,river-bed sand mining now removes about 3 Mm³/yr and deepens channels by up to 15 cm/yr,and groundwater withdrawals of approximately 2.5 Mm³/day have accelerated land-surface subsidence from smaller than 3 cm/yr in 2006–2010 to peaks of 5–6 cm/yr today.Scenario modelling shows that halving pumping would stabilize aquifer heads and cut subsidence by about 50%within a decade,while provincial sand-quota cuts of 30%–50%would slow bed incision and ease salinity intrusion,reducing the irrigation deficits that drive further pumping.While the large-scale causes of subsidence(dams,sea level rise,sand mining,groundwater extraction)are well recognized,actionable,local-level management solutions to immediately slow subsidence and salinity intrusion—independent of slow international negotiations—have been underexplored and under-implemented.Because dam and climate remedies rely on slow transboundary negotiations,we target the more practical local pressures—sand mining and groundwater extraction—by first tightening sand-mining licenses,enforcing tiered groundwater tariffs,and scaling up rain-and surface-water alternatives,buying time for longer-term basin and climate agreements.These locally actionable measures can significantly reduce subsidence and provide a scalable model for sustaining deltas around the world.
基金supported by the Scientific and Technological Innovation Project of SHASG(SCK2022-01)National Key Research and Development Program of China(2016YFC0803109)。
文摘Land subsidence significantly impacts the accuracy of the National Elevation Datum in China.In order to solve this issue,a dynamic and economical way was proposed to update the National Elevation Datum with the assistance of InSAR in the North China Plain,which served as the research area.Moreover,the GNSS result was used to correct the InSAR result for the vertical deformation field,which has a relatively unified deformation reference.By integrating the vertical deformation field with the national elevation control point,an analysis and evaluation of changes in the National Elevation Datum were conducted.In addition,a regional remeasurement scheme was formulated to achieve dynamic updates and mainte-nance of the National Elevation Datum on a regional scale.Through data acquisition and processing,we successfully improved reliability within the main subsidence areas for future use.As a result,updating the elevation values utilize a regional update method,and a dynamic and economical technical process to update the National Elevation Datum is shown in the study.
文摘BACKGROUND Primary percutaneous coronary intervention(PCI)is the preferred treatment for ST-segment elevation myocardial infarction(STEMI).However,in patients with high thrombus burden,immediate stenting during PCI can lead to poor outcomes due to the risk of thrombus migration and subsequent microvascular occlusion,resulting in no-reflow phenomena.Deferred stenting offers a potential advantage by allowing for the reduction of thrombus load,which may help to minimize the incidence of slow-flow and no-reflow complications.This study explores the effectiveness of a deferred stenting strategy in improving outcomes for STEMI patients.AIM To evaluate the effectiveness and safety of deferred PCI in a real-world setting in acute STEMI patients.METHODS RESULTS Anterior wall myocardial infarction was the predominant type of STEMI in 62%of the selected 55 patients(mean age:54 years;70%males),and diabetes mellitus was the most common risk factor(18.2%),followed by hypertension(16.2%).On the second angiogram of these patients measures of thrombus grade,thrombolysis in myocardial infarction flow grade,myocardial blush grade,and severity of stenosis of culprit lesion were consid-erably improved compared to the first angiogram,and the average culprit artery diameter had increased by 7.8%.Most patients(60%)had an uneventful hospital stay during the second angiogram and an uneventful intrapro-cedural course(85.19%),with slow-flow/no-reflow occurring only in 7.4%of the patients;these patients recovered after taking vasodilator drugs.In 29.3%of patients,the culprit artery was recanalized,preventing unnecessary stent deployment.CONCLUSION Deferred PCI strategy is safe and reduces the thrombus burden,improves thrombolysis in myocardial infarction(TIMI)flow,improves myocardial blush grade,and prevents unwarranted stent deployment.
基金supported by the National Key Research and Development Program of China under grant number 2023YFC2809103the Fundamental Research Funds for the Central Universities under grant numbers 2042022kf1204, 2042022kf1069, 2042023gf0012, 2042022dx0001+1 种基金the Hubei Provincial Natural Science Foundation of China under grant number 2022CFB081the State Key Laboratory of Geodesy and Earth's Dynamics, Innovation Academy for Precision Measurement Science and Technology under grant number SKLGED2023-2-6
文摘Elevation change monitoring of the Antarctic ice sheet has been a key issue in global change research.Satellite altimetry has been proven to be effective in detecting ice sheet variations. With the development of ICESat-2, many elevation observations can be used to derive elevation changes. However, the large amount of multitemporal data may include anomalous data points, increasing the uncertainty of the results. In this work, we improved the traditional repeat track method by introducing the Institute of Geodesy and Geophysics Ⅲ(IGGⅢ) method to obtain high-accuracy estimates of elevation change. The improved method was applied to analyze elevation changes along the transect from Zhongshan Station to Dome A in East Antarctica via ICESat-2 satellite altimetry data. The results show that the improved and traditional methods yield consistent numerical and spatial elevation change distributions. The elevation change calculated via the traditional method is 0.033 ± 0.131 m/yr, whereas the elevation change estimated via the IGGⅢ robust estimation method is 0.033 ± 0.109 m/yr from March 2019 to December 2021.In terms of spatial distribution, elevation changes in inland areas remain close to equilibrium, whereas regions with steeper ice sheet margins exhibit positive accumulation trends in elevation changes. The improved method reduces the standard error of the adjustment function from 0.975 to 0.691 m/yr. The improvement is particularly remarkable in the area between 72°S and 77°S. The results demonstrate that the IGGⅢ method effectively reduces errors caused by the inclusion of anomalous data and maintains the high data utilization rate of repeat-orbit methods.
基金supported by the National Natural Science Foundation of China(Nos.31971541 and 32201545).
文摘Extreme weather events pose an ever-greater threat to people,infrastructure,and nature.Forest ecosystems are highly sensitive to extreme cold events that can disrupt ecosystem functions,especially in montane regions.Ice storms can be particularly destructive,with rapid ice accretion causing tree branches to break,even snapping or uprooting entire trees.In March 2022,the Shennongjia forest in central China experienced severe ice storm conditions that severely damaged over 230,300ha.We utilized this opportunity to assess the vulnerability of different tree types(coniferous,deciduous,and evergreen broad-leaved)and stand compositions to damage resulting from ice glaze along an elevation gradient from 1,200 to 2,400m a.s.l.Among the 7,144 trees surveyed,10.1%suffered some extent of damage,which was most prolific in the middle elevation zone.While 96.8%of all damage occurred to deciduous broadleaved trees that dominated the forest community,the most severe damage(uprooting and lower trunk breakage)occurred to coniferous trees.The extent and severity of tree damage were moderated by forest composition,with secondary effects of forest structure and slope.Abiotic factors predominantly affected coniferous trees.We emphasize that more research and monitoring are needed to better understand the full impact of extreme weather events on forests,especially as the frequency and intensity of these events increases due to climate change.
基金supported by the Xinjiang Uygur Autonomous Region Major Scientific and Technological Special Project Research and Demonstration on the Development Model of Ecological Agriculture and Efficient Utilization of Soil and Water Resources in Modern Irrigation Areas(2023A02002-1).
文摘Climate change in High Mountain Asia(HMA)is characterized by elevation dependence,which results in vertical zoning of vegetation distribution.However,few studies have been conducted on the distribution patterns of vegetation,the response of vegetation to climate change,and the key climatic control factors of vegetation along the elevation gradient in this region.In this study,based on the Normalized Difference Vegetation index(NDVI),we investigated the evolution pattern of vegetation in HMA during 2001-2020 using linear trend and Bayesian Estimator of Abrupt change,Seasonality,and Trend(BEAST)methods.Pearson correlation analysis and partial correlation analysis were used to explore the response relationship between vegetation and climatic factors along the elevation gradient.Path analysis was employed to quantitatively reveal the dominant climatic factors affecting vegetation distribution along the elevation gradient.The results showed that NDVI in HMA increased at a rate of 0.011/10a from 2001 to 2020,and the rate of increase abruptly slowed down after 2017.NDVI showed a fluctuating increase at elevation zones 1-2(<2500 m)and then decreased at elevation zones 3-9(2500-6000 m)with the increase of elevation.NDVI was most sensitive to precipitation and temperature at a 1-month lag.With the increase of elevation,the positive response relationship of NDVI with precipitation gradually weakened,while that of NDVI with temperature was the opposite.The total effect coefficient of precipitation(0.95)on vegetation was larger than that of temperature(0.87),indicating that precipitation is the dominant control factor affecting vegetation growth.Spacially,vegetation growth is jointly influenced by precipitation and temperature,but the influence of precipitation on vegetation growth is dominant at each elevation zone.The results of this study contribute to understanding how the elevation gradient effect influences the response of vegetation to climate change in alpine ecosystems.
文摘AIM:To investigate the changes in posterior corneal elevation within 6mo after small incision lenticule extraction(SMILE)surgery for myopia and myopic astigmatism in patients with thin corneas.METHODS:A prospective study included patients with thin corneas(preoperative thinnest corneal thickness ranging from 480 to 520μm)who underwent SMILE for myopia or myopic astigmatism.Corneal topography and posterior corneal elevation were assessed using Pentacam HR at three time points:preoperatively,1mo,and 6mo postoperatively.The measured parameters included thinnest point elevation(PTE),posterior maximal elevation(PME),posterior central elevation(PCE),and 24 additional reference points.RESULTS:A total of 106 eyes from 106 patients(age range:18-34)were included in the study.Uncorrected distance visual acuity(UDVA)improved significantly,with a mean logMAR value of-0.07±0.06 at the final follow-up visit.Measurements of posterior corneal elevation showed no significant changes in most points,hemispheres,and meridians at 6mo postoperatively.Notably,only two points,ΔE_(2mm-45°)andΔE_(2mm-90°),exhibited statistically significant elevation changes:the elevation ofΔE_(2mm-45°)increased from-2.3±4.99 to-1.0±5.9μm(P=0.0037),and that ofΔE_(2mm-90°)increased from-16±7.53 to-15±7.4μm(P=0.016).However,these changes were within the measurement error range of the Pentacam HR(±5μm in a 5 mm area).CONCLUSION:SMILE surgery is a safe and stable procedure for correcting myopia or myopic astigmatism in patients with thin corneas,as evidenced by the stability of posterior corneal elevation.
文摘Currently,the worldwide prevalence of morbid obesity has increased.1 The National Health and Nutrition Examination Survey from the Centers for Disease Control and Prevention revealed that the prevalence of obesity in the adult population between 20 and 74 years old had more than doubled from 13.3%to 31.1%from 1960 to 2002.2 Metabolic and bariatric surgery(MBS)is now suggested for patients with a body mass index(BMI)of more than 35 kg/m2,comorbidities or no comorbidities.Furthermore,MBS should be offered to people with metabolic disease and a BMI of 30e34.9 kg/m2 who have failed to gain a meaningful amount of weight or have failed to keep it off with non-surgical management.However,the BMI cutoff points should be modified for the Asian population.
文摘Background Elderly patients(age≥60 years)with ST-segment elevation myocardial infarction(STEMI)are at an elevated risk of mortality.This study aimed to investigate the association of the creatinine to ejection fraction ratio(CER)with in-hospital and 1-year death in elderly patients with STEMI.Methods A total of 753 consecutive elderly patients(age≥60 years)with STEMI undergoing percutaneous coronary intervention(PCI)were enrolled and divided into three groups according to the tertiles of CER at admission:<1.5(n=250),1.5-2.2(n=249)and>2.2(n=254).Multivariate analyses were performed to evaluate the prognostic value of CRE for short-term death in this population.Results The in-hospital and 1-year mortality reached 6.0%and 13.3%,respectively.Patients with higher CER exhibited a higher in-hospital mortality(0.8%vs.2.8%vs.14.2%,P<0.001).An optimal cut-off value of 2.5 for CER was identified for predicting in-hospital death by receiver operating characteristic curve analysis,yielding a sensitivity of 77.8%and a specificity of 76.1%[area under curve(AUC):0.791,95%confidence interval(CI):0.734-0.847,P<0.001].Multivariate regression analyses revealed that CER>2.5 was an independent risk factor for both in-hospital[adjusted odds ratio(OR):9.006,95%CI:2.707-29.967,P<0.001]and 1-year mortality[adjusted hazard ratio(HR):5.082,95%CI:2.462-10.490,P<0.001].Conclusions Elevated CER is associated with adverse short-term mortality in elderly STEMI patients undergone PCI,offering valuable insights for the early identification and management of high-risk individuals in clinical practice.
文摘Micro-short dramas have created a context for the international communication of China’s fine traditional culture,addressing“what to say,”“how to say it,”and“why to say it.”However,a systematic path for international cultural communication has yet to be established.By taking micro-short dramas as a medium and drawing on a three-tier cultural dimensional elevation model of“symbol cognition-narrative circulation-cultural identity,”this paper explores the natural internalization process from symbol cognition to cultural identity among audiences during the international communication of China’s fine traditional culture.Research shows that micro-short dramas have established a cultural cognitive interface for international audiences through the innovative use of symbols related to China’s fine traditional culture.The use of internet-based narratives has enabled cross-contextual reinterpretation and emotional resonance of China’s fine traditional culture.Furthermore,integration and reconstruction have facilitated cultural identity among international audiences regarding China’s fine traditional culture.The interplay of these three aspects forms a three-tier path for cultural dimensional elevation in the international communication of China’s fine traditional culture through micro-short dramas.This path can effectively reduce cultural discount and contribute to the paradigm shift of China’s fine traditional culture from geographical expansion to cultural identity.
基金supported by the National Natural Science Foundation of China(Grant 82471937)Beijing Hospitals Authority Youth Programme(Grant QML20230610).
文摘Background:Left atrioventricular coupling index(LACI)is a promising marker for predicting major adverse cardiac events in individuals with acute ST-segment elevation myocardial infarction(STEMI).However,the relationship between LACI and adverse left ventricular(LV)remodeling(ALVR)in patients with STEMI remains to be fully elucidated.Methods:In this retrospective study,143 patients with STEMI who had undergone primary percutaneous coronary inter-vention(PCI)underwent cardiovascular magnetic resonance(CMR)imaging.The examinations were performed at 5±2 days(baseline)after PCI and at 6 months after STEMI.Left atrial and LV structural and functional indicators were evaluated.ALVR was defined as an increase of≥20%in LV end-diastolic volume(LVEDV)or an increase of≥15%in LV end-systolic volume at 6 months on CMR images.The patients were divided into two groups depending on the presence or absence of ALVR,and the CMR features were compared between the two groups.Results:Overall,51 patients(mean age 57±11 years;42 men)experienced ALVR after 6 months.In the univariable regression analysis,LVEDV index and LACI were significantly correlated with ALVR(odds ratio[OR]:0.989,95%confidence interval[CI]:0.979-0.999,p=0.025;OR:1.046,95%CI:1.012-1.080,p=0.007,respectively).Following adjustment for fundamental clinical variables,multivariate logistic regression analysis showed that baseline LACI was an independent predictor of ALVR at 6 months(OR:1.324,95%CI:1.055-1.662,p=0.016).Conclusions:CMR-derived LACI in patients with acute STEMI was an independent predictor of ALVR.
基金supported by the National Key Research and Development Program of China(No.2022YFB380-7300)the National Natural Science Foundation of China(No.12471455)+2 种基金the Clinical Cohort Construction Program of Peking University Third Hospital(BYSYDL2022005)the Key Clinical Projects of Peking University Third Hospital(BYSYZD2023006)the Innovation&Transfer Fund of Peking University Third Hospital(BYSYZHKC2023-109).
文摘Kounis syndrome(KS)is a rare but clinically significant condition characterized by the simultaneous occurrence of acute coronary syndrome(ACS)and allergic reactions,which can develop in patients with either normal or diseased coronary arteries.[1,2]The condition is typically triggered by various allergens including medications(particularly contrast media),environmental factors,or food exposures,with symptom onset usually occurring within one hour of exposure.
