简介：目的采用12导联动态心电图监测分析阵发性心房纤颤(PAF)的触发方式、发生部位和发生频率,以了解阵发性房颤自行发作的机理.方法对31例自行发生PAF的病人采用12导联24h动态心电图系统进行监测,并对记录到的287次PAF的触发方式、房性早搏的发生部位、频率和心率进行分析.结果264次PAF发作(92%)是由房性早搏触发,20次PAF发作(7%)是由典型心房扑动进展形成,3次PAF发作(1%)由房性心动过速转变形成.根据12导联心电图标准,触发PAF的房性早搏中有217次(82%)起源于左房,5次(2%)起源于右房,42次(16%)起源部位不明确.在22例(71%)反复PAF发作的病人中,有15例病人是由同一形态的房性早搏触发.在PAF发作前120s和前30s期间内,房性早搏发生频率由0.8次/min分别增加到4.0次/分和6.1次/min(P=0.029和P=0.016).有224次PAF(78%)是在正常窦性频率(60～100次/min)下发生的.结论大多数PAF自行发作是在正常窦性频率下,由起源于左房并且发生频率增加的房性早搏所触发.

简介：英国一女婴最近上演了一出起死回生的生命喜剧，令人忍不住赞叹生命的强大。英国北安普敦郡13个月大的女婴薇露·佩哲在12天内，心脏病发作三次、中风一次，期间三次心跳停止无生命迹象，后又奇迹般生还。四周之后，她完全恢复，与同一年龄的正常孩童无异。

简介：据英国《卫报》网站报道称，近日，一种新式胃气球减肥药在英国开始正式投入使用。通过该疗法．在12周内．患者平均能减肥7.7公斤。

简介：血小板在动脉粥样硬化斑块破裂后血栓形成发病机制中发挥关键作用，因而针对血小板激活途径的药物成为抗栓治疗的主要手段。循证医学表明，抗血小板治疗可以有效地预防动脉粥样硬化疾病患者发生严重的心血管事件。已经成为防治急性冠脉综合征的主要方法。

简介：ObjectivesToexploretheprotectiveeffectofirbesartan(Irb)undertheinterferencewithangiotensinⅡ(AngⅡ)onABCA1.MethodsElectronmicroscopywasusedtodetectthemorphousoffoamcells.TheexpressionofABCA1mRNAanditsproteinweredeterminedbyRT-PCRandWesternblotting,respectively.Thevarianceofcellularcholesterolcontentwasmeasuredbyzymochemistryvia-fluorospectrophotometer.ResultsApositivefacilitativeeffectofAngⅡontheformationoffoamcellswasobserved.TotalcholesterolwasincreasedsignificantlybyAngⅡ,theexpressionofABCA1wasdown-regulatedobviouslybyAngⅡ;IrbcouldprotectABCA1againstthelesionofAngⅡ;TotalcellularcholesterolcontentwasreducedsignificantlyinIrb+AngⅡgroup;However,considerablealterationaboutthecholesterolcontentandtheexpressionofABCA1werenotobservedinIrbgroupwithoutincubationwithAngⅡ.ConclusionsIrbcouldprotectABCA1againstthelesionofAngⅡ,whichmaycontributetoitsanti-atheroscleroticproperties.

简介：电交替是1种心电现象,复合性电交替者较少见,现报告1例.

简介：患者男,35岁.临床诊断心肌炎.图为Ⅱ导联记录.可见P波顺序出现,正向传导,P-R间期0.16s,窦性P-P间期较规则为:0.80s.图中可见数组P波已经脱离了生理不应期,但是仍然出现传导迟延(上行P13P-R间期为0.36s;中行P5p-R间期为0.32s,下行P9P-R间期为0.32s)和传导中断(中行图R5、R6之后,下行Rt之后).

简介：患者男性，79岁。4年前出现活动后胸闷、气短，经休息或口服利尿剂缓解，无典型心绞痛症状，未经系统治疗。于2004年12月气短加重，不能平卧。心电图（ECG）（图1A）示：P波顺序出现，Ⅰ、Ⅱ、Ⅲ、aVF、V6导联直立，aVR导联倒置，其振幅、时间均正常，ST—T改变（ST1、aVL、V4-V6呈下斜型下移达0．3mV，TI、aVL、V4-V6倒置0．2～0．5mV）。

简介：正常成年人12导联心电图的V1导联呈rS型。当V1导联以R波为主或R/S〉1时,临床可见于完全性右束支阻滞、后壁心肌梗死、右心室肥大、肥厚型心肌病、右位心、A型心室预激及正常变异等多种情况。本文结合心电图与心电向量图,对V1导联R/S〉1的几种表现进行分析总结。

简介：目的评价12导联同步Holter（简称DCG）诊断缺血型ST段改变的敏感性。方法选择22倒接受过冠状动脉造影（CAG）、12导联Holter检查的住院者，统计其CAG结果和DCG栓查结果中各导联缺血型ST段改变。结果①22例中，3例CAG未见异常DCG存在缺血型ST—T改变（占13．64％）；1例CAG异常DCG未发生心肌缺血（占4．55％）；②DCG示各导联缺血型ST段改变的发生率，以V6导联最高，占86．36％（19／22）；其次为V6导联，aVL导联未发生；③DCG示ST段下降程度最重的是V6导联（-37mm），其次为V5导联（-32．3mm）。结论DCG无创、费用低，对心肌缺血的诊断具有较高的敏感性．可作为诊断心肌缺血的重要无创性检查技术。

简介：BackgroundComparedtoclopidogrel,Ticagrelorsignificantlyreducestheriskofcardiovasculareventsinpatientswithacutemyocardialinfarction(AMI)howeverincreasestheincidenceofbleedingandtheriskoffatalintracranialhemorrhage.Inthisstudy,wescreenedtheAMIpatientswithclopidogrelresistence,anddeterminedwhetherticagrelorsequentialtherapycouldreducetheriskofcardiovasculareventsandbleedingrisk.MethodsAtotalof319AMIpatientswereenrolledinthisprospectiveclinicalstudy.Theplateletinhibitionratesinadenosine5'-diphosphate(ADP)pathwaysweremeasuredbyathrombelastography(TEG)system.ThepatientswithclopidogrelresistanceweredividedintoTicagrelorsequentialtherapygroup(ticagrelorfor3monthsandclopidogrelfor9months,n=143)andClopidogrelgroup(clopidogrelfor12months,n=176).Theriskofmajoradversecardiacevents(MACE)andthesafetyendpointsat1-yearfollow-upwereanalyzed.ResultsTheratesofstentthrombosis(ST)(2.1%vs.8.0%,P=0.017)orMI(2.8%vs.10.2%,P=0.009)werelowerintheticagrelorsequentialtherapygroupthanintheclopidogrelgroup.Dyspneawasmoreoftenintheticagrelorsequentialtherapygroupthanintheclopidogrelgroup(17.5%vs.4.5%,P<0.001).Nosignificantdifferenceintherateofmajorbleedingwasfoundbetweenthegroups(3.4%vs.3.9%,P=0.528).ConclusionsInAMIpatientswithhyporesponsivenesstoclobidogrelticagrelorsequentialtherapygroupsignificantlydecreasedtheratesofSTandMIwithoutincreasedriskofmajorbleedingascomparedwithclopidolgrel.

简介：T1mappingusingcardiovascularmagneticresonance(CMR)introducesnoveltechniquesformyocardialtissuecharacterizationtodetectandquantifydiseaseprocessesoccurringatthemicroscopiclevel.EventhoughT1mappinghaslimitedspatialresolution,cellularandmolecularchangesoccurringwithineachvoxelcanaffecttheaggregateT1signalrenderingthemquantifiable.TheestimatedT1-basedparametersquantifiedona“map”demonstratethespatiallocalizationofthesechangeswherebyeachpixelexpressesthequantitativevalueofthatparameter.Thisquantificationpermitsdetectionofdiffusediseaseevenifitisnotdirectlyvisible.Ratherthanrelyingonnonspecificfunctionalmeasures,T1mappingfocusesonintrinsicchangesofmyocardialcompositionthatadvancesunderstandingaboutspecificdiseasepathways.Thesechangesinmyocardialtissuecompositioninformdiagnosisandprognosis.T1mappingencompassestwokeyparameters:native(i.e.,precontrast)T1andextracellularvolumefraction(ECV)derivedfromadditionalpostcontrastT1andbloodT1measurements.Theseadvancesintroducenewtoolstodetectfocalanddiffusemyocardialderangementsoccurringincardiacdiseasethatcanbeotherwisedifficulttodetect.T1andECVmappingfosterprecisionmedicineandpersonalizedcare,promisingtoimprovepatientoutcomesthroughtargetedtherapy.CapitalizingontheopportunitiesintroducedbyT1mappingandECVrequiresfurtherinvestigation.

简介：患者女性，45岁，主因“发作性心悸10年，加重9h”于2015年4月3日入院。既往白塞病史20年，间断出现口腔溃疡，反复外阴溃疡，针刺试验（+）。9:30出现心悸，持续无缓解，伴头晕、头痛，无胸痛、气短，就诊于当地医院，测血压60/45mmHg（1mmHg=0.133kPa），给予药物处理后（具体用药不详）急诊转入我院。

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简介：BackgroundCoronarymicroembolization(CME)ischaracterizedbydistalmicrovascularocclusion.However,theinflammatorymechanismsandtherapeutictargetsofCMEarelargelyunknown.MethodsAtotalof11GuangxiBamaminiatureswinesweredividedintotwogroups:sham(n=5)andCME(n=6).MicrosphereswereinjectedintotheleftanteriordescendingarteryoftheCMEgrouptomakeananimalmodelofCME.TheexpressionsofmicroRNA-146a(miR-146a)andIRAK1,TRAF6,andAUF1inthemyocardiumweredetectedbyqPCR.ResultsIntheCMEgroup,microspheres,microinfarction,andinflammatorycellinfiltrationwerefoundunderanopticalmicroscope.TheexpressionlevelsofmiR-146awerelowinbothgroups.AfterCME,theexpressionlevelsofIRAK1,TRAF6,andAUF1intheCMEgroupwereupregulatedcomparedwiththoseintheshamgroup(P<0.01;P<0.05;P<0.05,respectively).ConclusionsAUF1,IRAK1andTRAF6,butnotmiR-146a,couldbeinvolved,inmyocardiuminflammationfollowingCME.

简介：慢性阻塞性肺疾病（COPD）发病率和死亡率极高，预计在2020年将成为全球第3大致死病因，COPD的进展导致肺动脉高压（PAH），其主要机制为缺氧性肺血管收缩、肺血管内皮功能失调和肺血管重塑。本研究旨在通过检测PAH患者血清ET-1、

简介：BackgroundEssentialhypertension(EH)hasbecomethemostcommonchronicnon-infectiousepidemicandisoneofthemostcommonriskfactorsforthedamagetoheart,brain,kidneyandotherorgans.TheserumlevelsofICAM-1,IGF-1andIL-8playimportantrolesinthepathogenesisofEH.MethodsInthemedicalcheck-upcenteroftheAffiliatedHospitalofQingdaoUniversityMedicalCollege,sixtynormaloffspringwithafamilyhistoryofEHwererandomlyrecruitedintotwogroups:30offspringwithafatherormothersufferingfromEHassingle-parentgroup,and30offspringwithbothparentssufferingfromEHasdouble-parentgroup,andanother30normaloffspringwhoseparentsdidnotsufferfromEHascontrolgroup.TheserumlevelsofICAM-1,IGF-1andIL-8weredeterminedbyenzyme-linkedimmunosorbentassay(ELISA).ResultTheserumlevelsofICAM-1,IGF-1andIL-8weresignificantlyhigherinbothsingle-parentgroupanddouble-parentgroupthaninthecontrolgroup(P<0.05),andtheserumlevelsofICAM-1,IGF-1andIL-8werehigherinthedouble-parentgroupthaninthesingle-parentgroup(P<0.05).TheserumlevelsofICAM-1,IGF-1andIL-8werepositivelycorrelatedwiththeseverityofbloodpressureelevation(r=0.375,r=0.465,r=0.326,P<0.05,P<0.01,P<0.05respectively).ConclusionsDuetotheinfluenceofheredity,theseruminflammatoryfactorcontentsinnormaloffspringwithEHfamilyhistorymayincreasebeforebloodpressurerise.DetectionofseruminflammatoryfactorsinhealthyoffspringwithafamilyhistoryofEHcouldpredictoccurrenceofhypertension,andprovideamorereliablebasisfortheprimarypreventionofhypertension.

简介：目的:探讨血清转化生长因子(TGF-β1)和胰岛素样生长因子(IGF-1)水平对冠心病患者心功能的影响.方法:选择因胸痛住院患者88例分为急性心肌梗死(AMI)组、心绞痛(AP)组和对照组,填调查表,入院择日行选择性冠状动脉造影术,术前采股动脉血,以ABC双抗体夹心ELISA法检测血清TGF-β1和IGF-1浓度,入院2周内完成超声心动图,所有资料用SPSS10.0软件处理.结果:AMI患者与AP患者相比,血清TGF-β1浓度较低(P<0.05),IGF-1血清浓度较低(P<0.001);冠心病患者血清IGF-1水平与EF(P<0.05)和FS(P<0.02)正相关.结论:TGF-β1和IGF-1对冠心病患者具有某种保护作用,其中IGF-1能保护冠心病患者的心功能.

简介：急性脑血管病目前已被公认是一种主要的致死、致残的常见病.其与高血压病、糖尿病、高脂血症、吸烟等危险因素的关系,早已被人们重视,并予以积极治疗,但营养因素对脑血管病影响的研究近十年才开始.本文对2001年8～12月入住我院急性缺血性脑血管病患者进行血浆叶酸、维生素B12浓度的测定,旨在探讨叶酸和维生素B12与脑梗死的关系.

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