qtd

Observation of QTc and QTd of Electrocardiogram in Healthy Person

心电图QTc间期及其离散度的观测

Objective To introduce a method of computer automatic measurement of QTd .

目的介绍一种计算机自动测量QT离散度方法。

There were negative correlation between heart function and QTd .

心功能与QTd呈负相关关系。

Higher QTd in patients with hypertension is related to ventricular pressure overload .

高血压病病人的QTd的增大与心室负荷过重有关。

To measure the normal value of QTd in healthy adult at high altitude .

目的：确定高原健康成人QTd的正常值；

Conclusion QTd is a important index for malignancy arrhythmia .

结论：QTd是恶性室性心律失常监测的重要指标。

There was no difference in QTd and Pd between death group and survival group .

死亡组与存活组比较QTd与Pd无差异（P>005）。

Clinic Study of Relativity between QTd Change and Restenosis after PCI

QTd变化与PCI术后再狭窄相关性的临床研究

QTd cannot predict the efficacy of ventricular arrhythmia treatment .

QTd对于抗心律失常药物疗效无预测价值。

Effect of Irbesartan on Left Ventricular Hypertrophy and QTd in Hypertension

依贝沙坦逆转高血压左心室肥厚及其对QT离散度的影响

CONCLUSION : The activity of cardiac sympathetic nerve plays an important role in the production of QTd .

结论：心交感神经活动可能是产生QTd的机制之一。

Effects of high dose clozapine treatment on the QT dispersion ( QTd ) of ECG

大剂量氯氮平对心电图QT离散度的影响

Conclusion : QTd may be decreased significantly by PTCA therapy at the end of 24h course .

结论：成功地急诊PTCA干预治疗再灌注24h后可使QTd显著降低，改变其自然演变过程。

In non heart disease group abnormal QTd were 84 % before exercise and 12 % after exercise .

非器质性心脏病组运动前QTd异常率为84%，运动后为12%。

The comparison of TaTe Interval and QTd In CAD ventricular arrhythmia patient

TaTe间期与QTd在冠心病室性心律失常患者中的比较

After PTCA therapy , QT interval decreased , QTd should be lower relatively .

PTCA治疗后，QT间期缩短，QTd减少。

During DSE , QTd will show a trend of biphasic response .

DSE期间急性冬眠心肌模型的QTd呈现双相反应趋势。

Objective : To study the value of QT dispersion ( QTd ) in predicting prognosis on hypertension patients .

目的：探讨QT间期离散度对高血压病患者预后的预测价值。

QTd in stress test with combined propanolol and transesophageal atrial stimulation diagnostic value for coronary heart disease

心得安食管心房超速负荷试验中QTd诊断冠心病的价值

Purpose To discuss the correlation between QT diffusion ( QTd ) and malignancy arrhythmia .

目的：探讨QT离散度（QTd）与恶性室性心律失常的关系。

Lower coefficient of variance of QTd was measured by BSPM than by 12 lead ECG .

BSPM法测得QTd的变异系数低于12导心电图。

Theurrency curriculum made the excursionist incur QTd loss of time and money .

货币课程使短途旅游者招致时间和钱的损失。

Objective To study the changes of QT dispersion ( QTd ) of patients with diabetic microvascular complication and its significance .

目的探讨糖尿病微血管病变患者的QT离散度（QTd）变化及其意义。

When blood pressure increases sharply , the acute myocardial ischemia , QTd prolongation and complicated arrhythmia occured .

当血压急剧升高时，伴发急性心肌缺血、QTd明显延长和复杂性心律失常。

Results The 24 hours time zone indexes and QTd of CAD patients are lower than healthy subjects obviously ( mean P < 0.01 ) .

结果冠心病组患者24h时域及QTd与健康对照组比较均有非常显著差异（P<0.01）。

Methods : QTd in 100 patients with all kinds of VA were measured on the surface simultaneous 12-lead electrocardiogram .

方法：前瞻性研究100例室性心律失常病例，测量体表同步十二导联心电图的QTd等值，及随病情的变化。

QTd is referred to the value between maximum QT and minimum QT in different leads in the same ECG .

QT间期的测量从QRS波起点至T波终点，同一导联测量3个心动周期，取其平均值。不同导联最大QT值减去最小QT值为QTd值。

Methods We analyze the results and the changes of QTd and Exercise Treadmill Test in the 21 cases treated before and after PTCA .

方法总结了21例冠心病经皮腔内冠状动脉成形术（PTCA）前后QT离散度的变化和活动平板运动试验结果。

Conclusion QTd was increased in hypertensive LVH and long term treatment of Valsartan may significantly reduce LVMI and QTd .

LVMI与QTd之间呈正相关。结论高血压为LVH时QTd增大，缬沙坦长期治疗使LVMI减少，同时QTd也明显降低。

QTd of unsevere ventricular arrhythmia group was also longer than the control group , but there was no obvious difference between them .

非严重性室性心律失常组QTd与正常对照组比较，亦有延长，但差异无显著性。