简介:患者女性,40岁。反复心悸晕厥20年再发1天入院。其父在20多岁时猝死。入院时查体:血压120/80mmHg,心率640:/分,律齐,未闻及杂音,入院后查心肌酶学CTnI均正常。查心电图(图1A)示:Q—T间期延长,为0.58s。入院后给予β受体阻断剂治疗,入院期间反复发作尖端扭转型室性心动过速(图1B)。给予利多卡因及电除颤治疗后稍稳定。临床诊断:家族性Q—T间期延长综合征。后患者反复发作室性心动过速。转上级医院行起搏器加上β受体阻断剂治疗。随访未再发作晕厥。
简介:急性心肌梗死样心电图改变是心电图危急值内容,其发生原因除了急性冠状动脉综合征外,还可能为脑源性、外伤性等引起,现报道外伤致酷似急性心肌梗死心电图1例。1临床资料患者,男性,31岁,因“外伤性胸痛、胸闷4小时”入院。4小时前因工作时前胸部不慎被铁片砸伤,当即出现剧烈胸痛,伴胸闷不适,无咳嗽及咯血,无头晕、头痛,无恶心、呕吐,无咯血,生命体征稳定。急诊胸部+中上腹部CT示:(1)左上肺少量出血;(2)右下肺背侧渗出性病变;(3)心包积液(血)。急诊心电图(图1)示:窦性心律,频率98次/分;P-R间期固定0.15s;QRS波:时限0.13s,V1呈R型,R波升支有切迹,V4呈RS型,V5呈qRS型其S波粗顿,V2、V3呈qRS型伴ST段呈弓背型抬高0.3mv及T波倒置。心电图诊断:(1)窦性心律;(2)V2、V3导联异常q波伴ST段呈弓背型抬高0.35mv及T波倒置,提示符合急性前间壁心肌梗死或急性心脏挫伤心电图改变;(3)完全性右束支传导阻滞。急诊(时间21:09)肌红蛋白593.9ng/ml,肌钙蛋白26.73ng/ml,肌酸激酶(CK)1262U/L,肌酸激酶同功酶(CK-MB)70U/L,白细胞29.4×109,中性粒细胞比例88.04%,超敏C反应蛋白和血脂正常。超声多普勒提示:两侧胸腔积液,心包积液。
简介:Repeatcoronaryrevascularizations(RCR)arecommoninpatientsunderwentpercutaneouscoronaryintervention.ThereisnoavailablepredictionmodelforRCRatpresent.Theassociationbetweenparaoxonas-1(PON1)andthedevelopment,progression,andprognosisofcoronaryarterydiseaseisunderhotresearch.Therela-tionshipofserumPON1activitylevelandRCRhasnotbeenreported.ThisresearchaimedtodetectthedifferenceofserumPON1activitylevelsbetweenRCRandsinglecoronaryrevascularization(SCR),hencetoilluminatethevalueofPON1inpredictingRCR.MethodsSerumPON1activitylevelsof200patientswhohadachievedcompleterevascu-larizationsinfirstpercutaneouscoronaryintervention(PCI)weredeterminedbycolorimetricmethod.Allpatientsre-ceivedone-yearfollow-up.Coronaryangiographieswereperformedat6thmonth.Patientswhoneedmorerevasculariza-tionprocedureduringfollow-upwereenrolledinRCRgroup;thosewhodidnotneedmorerevascularizationprocedurewereenrolledinSCRgroup.Onehundredpatientswithnormalcoronaryangiographyduringthesameperiodweresetupasnon-coronaryheartdiseasecontrolgroup(NCC).ResultsSixtytwopatientswereenrolledinRCRgroup(28within-stentrestenosis,34withlesionprogressioninothercoronarysegments).SerumPON1activitylevelsinRCRgroup,SCRgroupandNCCgroupwere109.2±98.6μkat/L,132.8±79.4μkat/Land156.4±82.8μkat/L,respective-ly.Statisticdifferenceswerefoundamongthreegroups(P<0.05).ConclusionsSerumPON1activitylevelsarelowerinpatientswhoneedrepeatcoronaryrevascularizationsthaninpatientsneedsinglepercutaneouscoronaryinter-ventionorwithoutcoronaryheartdisease.AlowerserumPON1activityleveliscloselyassociatedtorepeatcoronaryre-vascularization.
简介:患者男性,45岁。高血压史7年,双下肢无力10个月,加重20天入院。查体:血压160/110mmHg,心律齐,心率58次/分,心前区可闻及Ⅲ/Ⅵ级吹风样收缩期杂音。查CT示:左侧肾上腺囊肿。血钾1.5mmol/L。查心电图示:窦性心律,P—R间期0.15s,QRS波时限0.08s,Q—T间期0.32s,V2、V3导联U波高于T波,Q—u间期0.48s。图1示窦性T波后可见高大U波,在室性期前收缩代偿间歇之后的第1个窦性心律中U波振幅增大更明显,之后出现一阵多形性室性心动过速,心室率200次/分。心电图诊断:①窦性心律;②U波增大;③室性期前收缩;④短阵多形性室性心动过速。
简介:半乳糖凝集素(galectin)-3是galectin家族的重要成员之一,称为Mac-2抗原.其是一个相对分子质量为26000、与β-半乳糖苷结合的蛋白,能通过糖识别域与细胞表面的糖蛋白或糖脂结合,参与多种生理和病理过程.galectin-3主要存在于细胞质中,也可存在正常细胞、肿瘤组织中,其调节机制,尚不十分清楚.近年研究发现,galectin-3作为炎性反应的重要介质,在心肌重构和心力衰竭的病理发展过程中有重要作用,心力衰竭患者血浆galectin-3水平表达越高,越易进展为心力衰竭恶化,住院率与病死率也越高.2010年,美国食品与药物管理局批准了galectin-3的临床应用.
简介:Arrhythmogenicrightventriculardysplasia/cardiomyopathy(ARVD/C)ischaracterizedbyfibro-fattyreplacementoftherightventricle.However,thefeasibilityandsignificanceofmyocardialfibrosisdetec-tedbydelayedenhancement(DE)using3.0Tmagneticresonanceimaging(MRI)in.ARVD/Cisseldomlystudied.MethodsTwenty-sevenconsecutivepatientswereprospectivelyevaluatedforARVD/C.Magneticreso-nanceimagingwasperformedona3.0Tscanner.Tenminutesafterintravenousadministrationof0.2mmol/kgofgadodiamide,DE-MRIwasobtained.DiagnosisofARVD/CwasbasedupontheTaskForcecriteriaandin-cludedMRIfindings.ResultsSeventeen(59%)of27patientsmettheTaskForcecriteriaforARVD/C.Rightven-tricleDEwasfoundinall(100%)ARVD/Cpatientscomparedwithnone(0%)ofthe10patientswithoutARVD/C(P<0.001).AdditionalleftventricularDEwasfoundin8/17ARVD/Cpatientswhilewithoutleftventricularmor-phologicalandfunctionalabnormalitiesdetectedbyechocardiographyorMRI.ConclusionsDEusing3.0TMRIcouldeffectivelydetectmyocardialfibrosisintherightandleftventricularmyocardiuminARVD/Cpatients.DetectionofmyocardialfibrosismayhaveanimportantclinicalsignificanceinARVD/Cdiagnosis.Histologicalleftventriclein-volvementmaybeeasilymissedbyechocardiography.