Pathology and clinical characteristics of left bundle-branch block

Diagnostic value for left bundle branch block with left ventricular hypertrophy

完全性左束支传导阻滞Sv3>Sv2、Rv6>Rv5对左心室肥大的诊断价值

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Objective: To investigate the diagnostic value of 99 Tc m-MIBI ECG-gated myocardial perfusion imaging ( G-MPI) in left bundle branch block ( LBBB) combined coronary artery disease.

目的：探讨99Tcm-MIBI门控心肌灌注显像（G-MPI）在左束支传导阻滞（LBBB）病人中诊断冠心病的价值。

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ECG data of healthy people and three kinds of heart disease patients ( premature ventricular contraction, bundle branch block and supraventricular) which are analyzed in this thesis are derived from MIT-BIH ECG database.

本文采用MIT-BIH心电数据库中的健康人和室性失常病人、束支传导阻滞病人、室上病变病人等3种类型心脏病人的数据作为样本进行分析。

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With the increase of blood pressure, detectable rate of abnormal ECG such as left ventricular hypertrophy, high voltage of left ventricle, ST-T changes, bundle branch block, old myocardial infarction and premature ventricular arrhythmia was increased remarkably ( P0.01 for all).

高血压者临床心电图异常如左室肥厚、左室高电压、ST-T改变、各类早搏、束支传导阻滞、房室传导阻滞、陈旧性心梗等的检出率显著高于非高血压者（均P0.01）。

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Objective To assess abnormality of left ventricular torsion ( LVtor) with cardiac pacing and right bundle branch block ( RBBB) patients by two-dimensional ultrasound speckle tracking imaging ( STI), and demonstrate the rule of LV myocardium dynam during abnormal ventricular mechanical activation.

目的应用斑点跟踪显像（speckle tracking imaging，STI）技术评价心脏起搏和右束支传导阻滞（RBBB）的左心室旋转角度异常，初步揭示心室激动顺序异常时左心室心肌力学变化规律。

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Among the abnormal ECG, the positive rates of sinus bradycardia, sinus irregularity and ST-T changes of the observed group were respectively significantly higher than that of the control group ( P < 0.01).

异常心电图中观察组窦性心律不齐、ST-T改变和束支传导阻滞分别明显高于对照组（均有P

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Results showed that Q-Td and J-Td in both bundle branch blocks were higher than those of controls with very significant difference ( P < 0. 01).

结果显示：束支传导阻滞两组的Q-T d、J-T d值比对照组显著增高，差异有非常显著意义（P

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The results indicated that mortality in patients occurring with QTc prolongation 、 left ventricular hypertrophy 、 bundle branch block 、 junctional rhythm or sinus tachycardia was high.

结果发现QTc延长、左室肥厚、束支传导阻滞、交界性心律或窦性心动过速时，死亡率增高。

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Evaluation of systolic and diastolic ventricular synchronization in coronary heart disease patients with complete right bundle branch block by Doppler tissue velocity imaging

超声TVI技术评价冠心病右束支传导阻滞患者心室舒缩同步性的研究

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ST elevation in at least 2 corresponding leads ( 0. 05mV), or with new onset of complete left bundle block, c.

有两个相关导联或以上ST段抬高（）0.05mV），或出现新的左束支传导阻滞；c。

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Result: ECG manifestations varied, including sinus tachycardia, branch block, elongation of Q T interval or ST T changes etc.

结果：25例患者心电图表现分别为窦性心动过速、束支传导阻滞、Q-T间期延长及ST-T改变；

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The ECG showed that Right Bundle Branch Block ( RBBB) and ST-T changes after operation were obviously more than those before operation ( P < 0.01).

ECG显示右束支传导阻滞及ST-T改变明显多于术前（P

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Methods Four male patients were diagnosed as primary dilated cardiomyopathy. All patients were NYHA class III/ IV with left bundle branch block. The QRS width was ≥ 120 ms.

方法4例原发性扩张型心肌病，心功能III或IV级，合并左束支传导阻滞，QRS时间≥120ms。

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ⅲ° atrioventricular block and recovered in 2 h in 1 case, 2 patients occurrenced permanent right bundle branch block in 2 cases.

1例发生一过性Ⅲ°房室传导阻滞，2h后恢复正常，2例发生完全性右束支传导阻滞。

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Specifity of this sign in diagnosing atrial septal defect is remarkably high, when it presents either in all three inferior leads or at least in one lead associated with an incomplete right bundle block.

下壁导联均有R波切迹或至少1个下壁导联有R波切迹伴不完全性右束支传导阻滞对诊断房间隔缺损有高度特异性。

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The Value of electrocardiographic criteria for the differential diagnosis of wide QRS tachycardia in patients with preexisting bundle branch block

鉴别宽QRS心动过速心电图指标对原有束支传导阻滞患者的应用价值

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Doppler Tissue Imaging in Evaluation of Electrical Depolarization in Patients with Complete Right Bundle Branch Block

DTI无创性评估完全性右束支传导阻滞的电除极状态

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Evaluation of Ventricular Depolarization in Patients with Complete Left Bundle Branch Block by Doppler Tissue Imaging

DTI评价完全性左束支传导阻滞患者心室除极顺序

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QRS dispersion: An electrocardiographic index of systolic left ventricular dysfunction in patients with left bundle branch block

QRS离散度：左束支传导阻滞患者左心室收缩功能障碍的一个心电图指标

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Objective To assess the effects of intraventricular conduction abnormality on left ventricular function in dilated cardiomyopathy.

目的评价左束支传导阻滞对扩张型心肌病（DCM）左心功能的影响。

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