简介:目的探讨冠心病患者血浆纤维蛋白原(Fg)、D-二聚体(D-D)的变化。方法116例CHD患者其中单支血管病变组39例,双支血管病变组46例,多支血管病变组31例;不稳定性心绞痛(UAP)44例,急性心肌梗死(AMI)37例,稳定性心绞痛(SAP)35例与对照组77例,采集静脉血,检测血浆Fg、D-D水平,然后进行统计学处理。结果冠心病患者血浆Fg、D-D含量较非冠心病者明显升高(P〈0.01);且与冠脉病变程度及类型相关,3支病变者血浆Fg、D-D高于2支和单支病变者(P〈0.01)。急性心肌梗死(AMI)和不稳定型心绞痛(UAP)组血浆Fg、D-D水平较稳定型心绞痛(SAP)组及非冠心病组明显升高(P〈0.01)。结论血浆Fg、D-D水平与冠心病的发病及病变程度密切相关。对预测心血管事件和判断冠脉病变严重程度有参考价值。
简介:APeruviannative,Dr.VelardeearnedhermedicaldegreefromtheNewYorkUniversitySchoolofMedicineinNewYorkandwentontocompleteherresidencytraininginInternalMedicineatColumbiaPresbyterianMedicalCenterandCardiovascularDiseasefellowshiptrainingatMountSinaiHospitalinNewYorkandBostonUniversity.Dr.GladysP.VelardeisAssociateProfessorofMedicine/CardiologyatTheUniversityofFlorida,JacksonvillewhereshedirectstheWomen’sCardiovascularHealthProgramandisDirectoroftheCardiovascularDiseaseFellowshiptrainingprogram.
简介:波士顿科学国际有限公司是一家全球性的医疗技术产品研发、生产、营销公司,现有17,500名雇员,2005年的销售收入为63亿美金。在过去的二十五年中,公司为广泛的医疗技术领域提供了具有深度和广度的众多创新产品,从而推动了微创介入产品的实践和发展。通过提供传统外科手术的替代产品,波士顿科学公司致力于帮助医生和其它医疗行业工作者改善病人的生命质量。
简介:StandardTherapyforHeartFailureUntilnowtheprincipalfocusofheartfailuretherapyhasbeenonthesympatheticnervoussystemandtherenin-angiotensinsystem.Betablockadecounterstheunwantedeffectsofcatecholaminesonthemyocardiumaswellasmoderatelyreducingafterload.Sinceangiotensinisavasoconstrictorandhassometoxiceffectonthemyocardium,bothcontributingtoheartfailure,inhibitionoftherenin–angiotensinsystemhasbeenlogicaltherapyforheartfailure.However,useofangiotensinconvertingenzyme(ACE)inhibitorsmayincreasebradykininlevels,whichareresponsibleforthecoughthatmaybeassociatedwiththeiruseaswellasangioedemathatmayresultfromthesamemedications.
简介:Beforethe1950s,D-transpositionofthegreatarterieswasassociatedwithnearly90%mortalitywithinthefirstyearoflife.TheMustardandSenningproceduresresultedinasignificantincreaseinthelifespanofthesepatientsbutwithnotablelong-termcomplications,includingarrhythmias,sinusnodedysfunction,chronotropicincompetence,andrightventricularsystolicdysfunction.Thearterialswitchoperation(firstdescribedbyAdibJatene)initiallyresultedinnearlyuniversaldeath.However,theuseofcoronarybuttonsforcoronaryarterytranslocationhasimprovedoperativesurvivaldramatically.Itisnowconsideredthetreatmentofchoiceinpatientsamendabletothearterialswitchoperation.Consideredananatomicrepair,resultinginconcordantventriculoarterialconnectionsandasystemicleftventricle,thearterialswitchoperationreducestheincidenceofventriculardysfunction.However,itisalsoassociatedwithlong-termcomplications,includingaorticrootdilatation,aorticvalveregurgitation,rightventricularoutflowtractobstructions,coronaryarterystenosis/compression,andbranchpulmonaryarterystenosis.
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:目的:探讨临床表现、心电图1QⅢTⅢ特征、血浆D-二聚体(DD)水平与肺栓塞(PE)诊断的关系。方法:回顾性分析我院2012年6月至2014年5月进行肺动脉CT血管成像(CTA)的212例住院患者的临床资料。根据肺动脉CTA检查结果,患者被分为PE组(56例)和无PE组(156例)。收集患者住院基本资料,包括临床表现、ECG特征及血浆DD水平,并在两组间进行比较。结果:与无PE组比较,PIE组呼吸困难(44.87%比75%),长期卧床(3.85%比14.29%)患者比例显著升高,无临床表现比例显著降低(38.46%比3.57%),P均〈0.01。PE组ECG具有SIQⅢTm特征的患者比例显著高于元PE组(50%比23.08%),P〈0.01。与无PE组比较,PE组血浆DD〉10μg/ml比例显著升高(19.23%比32.14%),P〈0.05。结论:临床症状有呼吸困难和/或长期卧床者,出现其他心肺疾患不能解释的临床表现时;ECG具有SIQⅢTⅢ特征;DD明显升高(〉10μg/m1)者应考虑肺栓塞的可能性。
简介:ObjectivesToinvestigatetheeffectsofadrenergicreceptorantagonist(metoprololorprazosin)onmyocardialα1-ARdensityandthechangesofventriculareffectiverefractoryperioddispersion(VERP-D)inrabbitsaftermyocardialinfarction.Methodstwenty-fouradultmaleNewZealandrabbitsweredividedintofourgroupsatrandom:controlgroup(n=6);MIwithplacebogroup(n=6);MIwithmetoprololgroup(n=6);MIwithprazosingroup(n=6).Therabbitsreceivedcorrespondingdrugsforsevendays,beginningatthefirstdayafterMIandmyocardialα1-ARdensityweremeasuredandmeanwhile,myocardialβ-ARwasalsomeasured.ResultsIntheplacebogroup,thedensityofventricularα1-ARwasincreasedincomparisonwithcontrolgroup(α1-ARinnormalregion36.9±0.2vs27.3±0.9fmolmg-1Pro-1,p<0.01;α1-ARinischemicregion33.0±0.9vs26.6±0.4fmolmg-1pro-1P<0.01).Inthemetoprololgroup,itwasalsoincreasedincomparisonwithcontrolgroup(α1-ARinnormalregion44.7±1.5vs27.3±0.9fmolmg-1pro-1,P<0.01;α1-ARinischemicregion33.6±0.5vs26.6±0.4fmolmg-1pro-1,P<0.01).Meanwhilethedensityofventricularα1-ARinnormalregioninthemetoprololgroupwasincreasedincomparisonwithplacebogroup(44.7±1.5vs36.9±0.2fmolmg-1pro-1,P<0.01).Whileitdecreasedintheprazosingroupincomparisonwithcontrolgroup(α1-ARinnormalregion22.5±0.6vs27.3±0.9fmolmg-1pro-1,P<0.01;α1-ARinischemicregion20.9±0.4vs26.6±0.4fmolmg-1pro-1,P<0.01).VERP-DwasincreasedafterMI(P<0.01).Aftertreatmentwithmetoprololorprazosin,VERP-Dwasdecreased(P<0.01).ConclusionsAfteracuteMI,α1-ARofventricularmyocardiumwasupregulated,whichmaybeaccompaniedbyitsactivitation.Thedensityofmyocardialα1-ARbecameupregulatedmoredramaticallytreatedwithmetoprololanddownregulatedwithprazosin.Whentreatedwithmetoprololorprazosin,VERP-Ddecreased.
简介:患者女性,64岁,因活动后心慌。心前区不适3年.加重伴心前区疼痛1天就诊。查体:患者痛苦面容.皮肤湿冷;体温35.50℃;心率160次/分;呼吸28次/分;血压80/60mmHg。立即检查心电图示房室折返性心动过速。随即在心电监测下做左侧颈脉窦按摩,按摩约3s后,即出现1.34s的窦性停搏,又在一次P—R间期缩短的室上性激动后出现-12.38s的窦性停搏.当停搏8.86s时,患者出现两眼上翻,面色苍白.肌张力增强,立即心前区叩击一次并胸外心脏按压,3.5s后相继出现2.4s的室性心动过速,6s的室性自主心律,频率为27次/分的窦性心动过缓,以及3~6s的窦性停搏,持续心脏按压.吸氧约2min后.患者意识恢复,心电图转为窦性心律,呈窦性心动过缓.LGL预激综合症,缺血性ST段压低,继续观察心电图变化,可见ST段压低有所缓解,遂送入病房,给予抗凝。抗血小板凝集,J3受体阻滞剂等治疗,7天后临床治愈出院。