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左束支传导阻滞的临床意义 被引量:7

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摘要 左束支传导阻滞(LBBB)指心脏电冲动经希氏束向下,经左前、左后分支传导时发生延迟或阻滞,激动由右心室经室间隔传入左心室,导致左心室激动明显延迟。1909年Eppinger和Rothberger首次提出束支传导阻滞(BBB)作为传导系统异常的概念,其后的20年间对于区分LBBB及右束支传导阻滞(RBBB)仍存在困惑。LBBB的心电图表现:(1)QRS时限0.12S或0.12s以上。(2)Ⅰ导联R波宽大或有切迹,S波常不存在。(3)V5、V6导联R波宽,有切凹或呈双重R波,无Q波。
出处 《中国医师进修杂志(内科版)》 2007年第1期63-65,共3页 Chinese Journal of Postgraduates of Medicine
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参考文献20

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二级参考文献1

  • 1Izzet Tando?an,Ertan Yetkin,Ahmet Yanik,F. Vasfi Ulusoy,Ahmet Temizhan,Sengül Cehreli,Ali Sasmaz. Comparison of thallium-201 exercise SPECT and dobutamine stress echocardiography for diagnosis of coronary artery disease in patients with left bundle branch block[J] 2001,The International Journal of Cardiac Imaging(5):339~345

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