简介：窦房结游走心律(SWP)是心电学上的特有诊断，心电专业书刊中多在窦律不齐中讨论。有关SWP的专题报告……

简介：目的分析和比较应用射频消融房室结慢径治疗房室结折返性心动过速对老年人和青年人房室结电生理功能的影响.方法76例仅患有慢-快型房室结折返性心动过速的患者分为两组,老年组(≥60岁)36例和青年组(14～45岁)40例,均为行慢径消融术成功病例,对比消融前后和两组间的房室结功能参数,分析和比较这两组患者在射频消融前后房室结电生理特点的异同.结果所有病例均消融成功.两组病例消融后较消融前房室结前传文氏周期及最长A2H2间期均缩短,而老年组的心动过速周长、消融前后窦性心率周长及消融后房室结前传文氏周期均较青年组延长.结论老年人的房室结前传电生理特性较青年人为差,而对房室结折返性心动过速患者的慢径有效消融后,房室结电生理特性的变化规律不受年龄因素影响.

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简介：有一种心律问题被称为“病态窦房结综合征”，简称病窦综合征，可能是心律减慢的原因。学习如何发现及治疗这种疾病。与其名字不同的是，病态窦房结综合征与鼻窦无任何关系。相反，这个术语包含一系列可能引起晕厥、虚弱、心悸及呼吸急促的不规则心跳。

简介：间歇性房室结加速传导临床少见。作者近遇1例报告如下。

简介：双结病变是指窦房结和房室结同时存在着病变,表现为起搏或传导功能障碍。见于各种病因引起的病窦综合征等。双结病变的诊断主要依靠心电图及心脏电生理检查。自发的某些心律失常也可揭示双结病变,本文报告1例房性期前收缩(PAS)诱发的双结病变如下。

简介：C-反应蛋白是机体非特异性炎症反应的敏感标志物,可能参与心血管疾病的发生和发展,当它增高时,可能预测未来心血管事件的发生.对C-反应蛋白在某些方面也存在激烈的争论.

简介：BackgroundTheprognosticvalueofserumC-reactiveprotein(CRP)inpatientswithinfectiveendocarditis(IE)isnotwellelucidated.ThisstudyaimedtoevaluatetheusefulnessofCRPinpredictingtheoutcomeofIE.MethodsTwohundredninty-sixpatientsfrom2009to2012intheDepartmentofCardiologyatGuangdongGeneralHospitalwerescreenedanddividedintosurgicalandconventionaltreatmentgroups.CRP,whitebloodcell(WBC),erythrocytesedimentationrate(ESR)andotherclinicaldatawereobtainedwithfollow-upfor12months.ResultsTwohundredthirty-sixpatientswereassignedtoreceivesurgerytreatmentwhile60patientsreceivedconventionaltreatment.Inthesurgerygroup,thelevelofCRPinthedeathpatientswassignificantlyhigherthanthatinthesurvivalpatients(P<0.001).TheareaunderthecurveofROCwasabout0.749(SE0.064,P=0.005,95%CI,0.624-0.874)andthecut-offpointofCRPwas23.8mg/L.Inconventionalgroup,therewassignificantdifferencebetweendeathandsurvival(P<0.001).TheareaunderthecurveofROCwasabout0.701(SE0.095,P=0.032,95%CI,0.515-0.888)andthecut-offpointsofCRPwas65.6mg/L.TherewerenosignificantdifferencesinWBCandESRbetweensurgeryandconventionalgroups.ConclusionAmoreaggressivesurgicalinterventionresultsinabetteroutcomeoverconventionaltreatmentandCRPcouldbeservedasapredictivemarkerforadverseoutcomeinIEpatients.

简介：患者男性，23岁。饮白酒300ml后感烦躁、心慌1h入院。既往无心动过速史。查体：神志清，血压125／80mmHg，心界不大，心率79次／分，律齐，未闻及病理性杂音。双肺未见异常表现。查X线胸片及血清电解质均正常。17：46心电图（图1A）示：窦性心律，P—P间距匀齐，心率79次／分，P—R间期由0．20s延长至0．27s。其后（图1B）示：心率81次／分，P—R间期由0．27s缩短至0．20s。

简介：研究疾病:晚期心力衰竭.目的:比较血管紧张素转换酶抑制和直接血管扩张对晚期心衰预后的影响.设计:随机式.病人资料:117例充血性心力衰竭者,NYHAⅢ级或Ⅳ级,休息时有血液动力学异常,为心脏移植做评估.

简介：番茄是人们餐桌上常有的蔬果,有人说要生吃,有人说要熟吃,到底番茄怎么吃才更有益健康呢？我们购买番茄时应避免选择未成熟的青色番茄,因其含有毒的龙葵碱,吃多了可能导致中毒,出现头晕、恶心、呕吐及全身疲乏等症状,严重的还有生命危险。因此宜选择个大、圆润、丰满、已经熟透的番茄食用。

简介：目的评估低密度脂蛋白胆固醇（LDL—C）／高密度脂蛋白胆固醇（HDL—C）比值对经皮冠脉介入（PcI）术后患者心血管事件的预测价值。方法选择急性冠脉综合征（ACS）并予前降支置入支架的患者119例，依据血浆LDL—C／HDL—C比值将患者分为3组，随访1年，评估三组患者心血管事件发生率，以及各危险因素与心血管事件发生率的关系。结果①与LDL—C／HDL—C比值较低的两组相比，比值较高组患者体重指数、女性患者百分率、吸烟人数及糖化血红蛋白、高敏C反应蛋（hs—CRP）、总胆固醇和LDL—C水平均明显升高，而HDL—C水平和他汀类药物使用率则较低（P〈0．05）。②第1组风险（HR）1．04，95％可信区间（c，）0．98-1．08，第2组HR1．16，95％C11．08-1．20，第3组HR1．27，95％C11．19～1．36（P〈0．05）。随着LDL—C／HDL—C比值的升高，PCI术后1年患者心血管事件发生率也逐渐升高（P〈0．05）。③Cox比例风险回归模型提示，LDL—C／HDL—C比值对PCI术后心血管事件风险的预测价值优于其他危险因素。结论LDL—C／HDL—C比值对PCI术后患者1年内心血管事件再发具有一定的预测价值。

简介：双重性心室反应是指1次室上性激动分别经2条径路下传引起2次心室反应。临床上见于房室结双径路或预激综合征患者，是1种罕见的心电现象。本文报道1例窦……

简介：根据一项新的研究，添加服用维生素C或E不能帮助预防年龄相关性白内障。白内障或眼睛的晶状体浑浊是老年人失明的主要原因。年龄相关性白内障影响一半以上超过65岁的美国人。手术去除白内障是唯一有效的治疗方法，并且除了戒烟和多吃富含水果与蔬菜的饮食之外，关于如何预防它们知道的很少。

简介：一个新的研究显示,血液C反应蛋白(C-reactiveprotein,简称CRP)水平高并不会使人发生心脏病和中风的风险升高。C反应蛋白是一种反应人体炎症状态的蛋白。近年来C反应蛋白很受关注,因为有证据显示它与心脏病相关,可能是心脏病的标志物之一。但疑问仍然存在,到底C反应蛋白只是反映心脏存在问题,还是它本身可以导致心脏疾病?

简介：ObjectivesTostudythedepressiveeffectoftheantisenseoligonuceotides(ASODN)ofc-mycandproliferatingcellnuclearantigen(PCNA)ontheproliferationofVSMC.MethodsTakingtheVSMCobtainedfromrataortathoracaliscultured4～8generationasresearchobject.Theobjectsweredividedintothreegroupstocarryoutcontrolstudy:controlgroup,PCNAASODNgroupandc-mycASODNgroup.TheASODNs'workingconcentrationallwere1:50.ThedepressiveeffectofASODNonVSMCproliferationwasinvestigatedbycellcounting,MTTand3H-TdRincorporationassay;PCNAandc-mycexpressionweredetectedbyimmunohistochemicalmethodaftertransferringPCNAandc-mycASODNintoVSMC.ResultsPCNAandc-mycASODNcouldinhibittheproliferationofVSMCsignificantly,comparedwithcontrolgroup(P<0.05).②TransferringPCNAandc-mycASODNintoVSMCobtainedsuccessfully;thecorrespondinggenewasinhibitedobviously;comparedwithcontrolgroup(P<0.05).ConclusionsPCNAandc-mycmightplayaconsiderableroleintheVSMCproliferationprocess.ThecorrespondinggenecouldbedepressedsuccessfullyaftertransferringPCNAandc-mycASODNintoVSMC,andthentheproliferationofVSMCwassloweddown.Thisstudypresentedabeneficialproposalandtheoreticalfundamentforatherosclerotictreatment.

简介：目的研究DCG在揭示房室结双径路(DAVNP)中的应用价值.方法分析DCG检查的179例阵发性心动过速(PSVT)者的监测结果,对具有DAVNP特征者,通过食管电生理检查与其对比.结果确诊DAVNP29例,诊断准确率分别为64.4%(29/45).结论DCG监测为揭示房室结双径路提供了一种简便而有效的方法.

简介：患者男，74岁，临床诊断：冠心病。心电图(图1)示窦性P波在同一导联形态相同，在V3导联呈双峰，峰距0.04s，PP间距不等，在Ⅱ导联上相差最大0.12s，每隔2个P波后跟……

简介：Bothendotheliallipasegene(LIPG)584C>T(rs2000813)polymorphismandalcoholconsumptionmodulateserumlipidlevels.Buttheirinteractionsonserumlipidprofilesarenotwellknown.ThepresentstudywasundertakentodetecttheinteractionsofLIPG584C>Tpolymorphismandalcoholconsumptiononserumlipidlevels.GenotypingoftheLIPG584C>Twasperformedin763nondrinkersand520drinkersaged15-85.Interactionsbetweenthegenotypesandalcoholconsumptionwereassessedbyusingacross-productterm.Thelevelsofserumtotalcholesterol(TC),triglyceride(TG),high-densitylipoproteincholesterol(HDL-C),apolipoprotein(Apo)AI,andtheratioofApoAItoApoBwerehigherindrinkersthaninnondrinkers(P<0.01forall).Therewasnosignificantdifferenceinthegenotypicandallelicfrequenciesbetweennondrinkersanddrinkers.ThelevelsofserumTC,HDL-CandApoAIinnondrinkersweredifferentamongthethreegenotypes(P<.05-.01).ThesubjectswithCTgenotypehadhigherserumTC,HDL-CandApoAIlevelsthanthesubjectswithCCgenotype.ThelevelsofserumHDL-CandApoAIindrinkersweredifferentamongthethreegenotypes(P<.001andP<.05;respectively).TheindividualswithTTgenotypehadhigherserumHDL-CandApoAIlevelsthantheindividualswithCCandCTgenotypes.ThelevelsofTCinnondrinkerswerecorrelatedwithLIPG584C>Tallele(P<.05),whereasthelevelsofTGandHDL-CwereassociatedwithLIPG584C>Talleles(P<.05)andgenotypes(P<.05);respectively.ThepresentstudysuggeststhatthesubjectswithTTgenotypebenefitedmorefromalcoholconsumptionthanthesubjectswithCTandTTgenotypesinincreasingserumHDL-CandApoAIlevels.

简介：backgroundBonemarrowmesenchymalstemcells(BMSCs)canbeisolatedandculturedtomanypassages.However,StemcellsincludingBMSCsquicklyundergosenescenceinculture.Thecellsenescenceandmulti-directionaldifferentiationhavehamperedproducingBMSCsinquantitywiththeirundifferentiatedstate.Inthisstudywereportanaturalcompound,vitaminC(Vc),maintainsBMSCsstemproperty.MethodsHumanBMSCswereisolatedfrombonemarrowandpurifiedby1.073g/mLdensitygradientcentrifugation.50ng/mLVcwereaddedtoBMSCsfordifferenttimepoint.FlowcytometrywasusedtodetectcellsurfacemarkersofBMSCswithorwithoutVctreatment.BMSCsproliferationwasanalyzedbyMTTassay.PCR(polymerasechainreaction)andreal-timePCRwereusedfordetectingc-kit,nanog,andOct-4genesexpressionlevels.DNAmethyltransferase(Dnmt)1andDnmt3blevelswerealsodetectedbyreal-timePCR.ResultsFlowcytometryshowedthatafterVctreatmentfor6h,thesurfacemarkersofBMSCswerealmostunchanged.VcincreasedtheproliferationactivityofBMSCsfrom6hto24h.PCRshowedtheexpressionofc-kit,nanog,andoct-4geneswereobviouslyincreasedinVctreatedgroupthancontrolgroupat12h.Real-timePCRshowedthatthelevelofc-kit,nanog,andoct-4geneswereunregulatedfrom6hto12hcomparedwithcontrolgroup.VcalsoincreasedDnmt3bbutnotDnmt1geneexpression.ConclusionsOurresultsshowedVcactsatleastacceleratesBMSCsproliferationandmaintainsstemcellproperty.Inourstudy,wehighlightedamethodofimprovingthespeedofBMSCsgenerationandprovidedadditionalinsightsintothemechanisticbasisofpreventingBMSCssenescence.