简介:目的评价P波间期对阵发性房颤射频消融术后复发的影响.方法100例药物治疗无效的症状性阵发性房颤患者,在EnsiteVelocity三维标测系统指导下行环肺静脉前庭线性消融,消融终点为肺静脉电隔离.结果术中肺静脉隔离率100%.术后随访(14.0±5.5)个月,其中72例成功维持窦性心律(窦律维持组),28例复发(复发组).复发组最大P波间期及P波离散度均较窦律维持组明显延长[最大P波间期:(138±16)mm比(126±14)mm,P波离散度:(58±21)mm比(49±15)mm],两组差异有统计学意义.结论阵发性房颤射频消融术前标准体表12导联心电图(ECG)所测的最大P波间期及P波离散度可预测术后复发.
简介:目的:探讨胺碘酮对阵发性心房纤颤病人P波离散度的影响,以评价P波离散度判断药物疗效的意义.方法:有阵发性心房纤颤病史的23名患者进入观察组,另选23名无心房纤颤及其它器质性心脏病者为对照组.测量其P波离散度(PD),观察组在服用胺碘酮15到20天后复查P波最大间期(Pmax)和PD.观察治疗前后和组间PD和Pmax的变化和差异.结果:与对照组相比,观察组Pmax与PD显著增加,P分别<0.05,0.01;观察组服用胺碘酮后Pmax与PD明显下降,P分别<0.05,0.01;但治疗后PD仍明显高于对照组(P<0.01).结论:PD对预测心房纤颤有较好的敏感性与特异性,对于胺碘酮抗房颤作用的疗效评价也有一定的作用.
简介:目的探讨高敏C反应蛋白(hsCRP)和P选择素水平判定不稳定心绞痛患者近期预后价值。方法选取2014年3月~2015年4月我院门诊和住院收治98例不稳定心绞痛患者为研究对象,根据患者hsCRP、P选择素水平将其分为两组,A组为46例hsCRP和P选择素水平联合升高的患者,B组为52例hsCRP和P选择素水平非联合升高的患者。同时选取我院体检中心体检健康人40名作为对照组,分别检测对照组和研究组hsCRP、P选择素水平,对研究组患者和对照组人员均随访30d,统计主要心脏不良事件(Majoradversecardiacevents,MACE)发生情况,并与hsCRP、P选择素水平对比,探讨hsCRP、P选择素水平在不稳定心绞痛患者近期预后中价值。结果研究组患者血hsCRP和P选择素水平明显高于对照组,比较差异有统计学意义(P〈0.05)。通过对比可知,研究组患者MACE发生率明显高于对照组(P〈0.05),A组患者MACE发生率明显高于B组(P〈0.05)。结论不稳定心绞痛患者血清sCRP、P选择素水平显著升高,联合检测对预测MACE具有较高阳性率,可作为判定不稳定心绞痛患者近期预后检测指标。
简介:ObjectivesToevaluatetheeffectsofn-3fattyacidsonthecoronaryheartdiseasepatients.MethodsFromSeptember2007toMarch2008,60patientswithcoronaryheartdiseasewererandomlyassignedton-3fattyacidsgroup(groupN)andcontrolgroup(groupC).BothgroupsreceivedstandardcoronaryarterydiseasesecondarypreventiontreatmentandgroupNalsoreceivedeicosapentaenoicacid(EPA)1.8gplusdocosahexaenoicacid(DHA)1.2gperdayfor12weeks.Plasmatriacylglycerols,totalcholesterol,low-densitylipoproteincholesterol(LDL-C),high-densitylipoproteincholesterol(HDL-C)andbloodpressureweremeasuredbeforeandafterthestudy.ResultsPlasmatriacylglycerols,bloodpressureandLDL-ClevelwereloweringroupNaftern-3fattyacidstreatmentwhilenochangewasfoundingroupC(P<0.05).HDL-Clevelslightlyincreasedandtotalcholesterollevelslightlydecreasedaftern-3fattyacidsbutbothchangewerenotsignificant(P>0.05).ConclusionsN-3fattyacidshavebeneficialeffectsonthecoronaryarterydiseasepatients.
简介:INTRODUCTIONWiththedevelopmentofeconomyandimprovementoflifequality,theincidencesofhypertension,hyper-cholesterolemia,diabetes,obesityandsmokinghavebeenincreasedinChina,whichhasledtoasignificantincreaseinthemorbidityandmortalityofcoronaryarterydisease(CAD)~1.SinceitwasintroducedintoChinain1984,coronaryintervention(PCI)hasdevelopedrapidlyandhasbecomethemajortreatmentofCADbecauseofitsuniquecharacteristicsofminimalinvasiveand
简介:目的比较CT薄层增强扫描与3D-DSA数据源在颅内动静脉畸形(AVM)3D打印数据重组中的效果。方法前瞻性选取5例AVM患者,Spetzler-Martin分级Ⅱ级3例,Ⅲ级2例。对其中2例采用256层螺旋CT薄层增强扫描,3例采用3D-DSA旋转成像,提取检查结果的DICOM原始数据,通过Mimics14.0软件进行数字化处理,并按1∶1比例进行3D打印,获得实体模型并进行效果比较。结果基于256层螺旋CT薄层增强扫描数据源的3D打印可获取颅骨及血管的图像信息,能显示最细直径0.9mm的血管,但AVM内部细支结构难于分辨;基于3D-DSA数据的3D打印,数字减影无颅骨数据信息,但血管分支情况显示更丰富,可显示最细直径0.5mm的血管。结论应用CT薄层增强扫描或3D-DSA数据源均可获得AVM畸形团3D重组图像,而3D-DSA显示AVM畸形团空间构造效果更佳,有助于术前治疗方案的设计及相应辅助工具的开发。
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:目的评价P波离散度(Pd)及左房内径对扩张型心肌病(DCM)者发生心房颤动(Af)的预测价值。方法对156例DCM者按是否伴有Ⅺ而分为时组(A组)和非Af组(B组)。分别测量两组的心电图P波最大时限(Pmax)、P波最小时限(Pmin)并计算出Pd。同时用超声心动图(UCG)测量左房内径,然后进行比较分析。结果156例中A组48例(30.7%),其中阵发性Af19例(39.5%);持续性Af29例(60.4%);48侧中无症状性Af7例(14.5%)。A组与B组Pmax、Pd及左房内径值均明显增加(P〈0.01);A组与B组比较,Pmax〉140ms,Pd〉40ms,左房内径〉42mm,指标均有显著性差异。结论在DCM伴Af者中无症状性Af是比较常见的;Pmax〉140ms,Pd〉40ms和左房内径〉42mm,这三项指标对预防Af的发生有重要价值。
简介:目的观察P波离散度(Pd)在房室结折返性心动过速(AVNRT)患者经射频消融术前后的变化。方法测定未合并房颤及合并房颤的AVNRT经射频消融术前后Pd,比较术前术后Pd的变化。结果发现射频消融后无论合并房颤或未合并房颤的AVNRT,其Pd均有所延长,但P〉0.05;合并房颤组与未合并房颤组的AVNRT相比,其术前两者比较及术后两者比较的Pd的P均〈0.05。结论AVNRT可能不是心房电活动弥散度增加的因素;AVNRT合并房颤发作者AVNRT可能仅仅是诱发因素,而不参与其维持;24小时内的Pd可能不能用于预测AVNRT射频术后再发房颤的并发症。
简介:ObjectivesToinvestigatethechangesofβ3-adrenoceptor(β3-AR)mRNAexpressionintheratswithchronicheartfailure(CHF),andtoexploretheeffectofβblockers(βBs)onβ3mRNAexpression.MethodsThirty-fourratswererandomlydividedintoShamgroup(n=10)andheartfailuregroup(n=24).Ratmodelwasestablishedbyaorticconstriction.Thesurvivalratsinheartfailuregroupweredividedintoheartfailurecontrolgroup(HFgroup,n=6),metoprololgroup(METgroup,n=8)andcarvedilolgroup(CARgroup,n=8)threemonthsafteroperation.Metoprololtartartewasstartedorallywith12mg·kg-1·d-1,carvedilolwith6mg·kg-1·d-1,isometricsalinewasstartedinHFgroup.Afterthreemonthsofdrugtherapy,measurementofhemodynamics,indexofventricularmass,thelevelofβ3-ARmRNAexpressionwereperformed.ResultsComparedwithShamgroup,leftventricularendsystolicpressure(LVESP),andtheabsolutevaluesofmaximalrateofriseandfall(±dp/dtmax)ofleftventricularpressurewereallsignificantlydecreased(P<0.01),leftventricularenddiastolicpressure(LVEDP)wassignificantlyincreasedinHFgroup(P<0.01).ThehemodynamicparameterswereimprovedbyβBs,andcarvedilolwasmoreeffectivethanmetoprolol(P<0.01).TheindexofventricularmasswashigherinHFgroupthanMETgroup,CARgroupandShamgroup(P<0.01).βBssignificantlydecreasedtheindexofleftventricularmass(LVMI),andCarvedilolwasmoreeffectivethanmetoprolol(P<0.01).Theindexofrightventricularmass(RVMI)didnotchangeinMETgroup(P>0.05),butsignificantdecreasecouldbeseeninCARgroup(P<0.01).Thelevelofβ3-ARexpressioninleftventriclewasgreaterthanthatinrightventriclewhetherinthefailingheartorinthenon-failingheart.ComparedwithShamgroup,thelevelofβ3-ARmRNAexpressionwassignificantlyincreasedinHFgroup(P<0.01).Thelevelsofβ3-ARmRNAexpressionshowedaremarkabledecreaseinCARgroup(P<