查询词典 QRS

According to the specialty of ambulatory ECG processing, its requirement for QRS detection algorithm is analyzed in detail.

根据动态心电分析的特点，分析了适用于动态心电处理的QRS波检测算法应当满足的要求。

Abstract］ Objective To confirm influence and degree of the key of resisting disturbance on cardiogram machine on QRS wave and shape.

摘要］ 目的证实心电图机抗干扰键对心电图QRS波群振幅和形态的影响及其程度。

There was much contention on distributive characteristics and their production mechanism of person′s QRS complex in time and frequency domain.

在人的QRS复合波的时域频域分布特征及发生机理问题上曾有过许多争论。

Heart rate, systolic pressure, the first derivative of left ventricular pressure, coronary flow, and PR and QRS intervals were measured in isolated constant-pressure perfused, nonrecirculating Langendorff heart preparations.

心率、收缩压、+dP/dtmax 、冠脉血流及 PR 、 QRS 间期被测量于离体恒压灌流、非再循环豚鼠心脏标本。

Objective To explore clinical significance of axis of "no man's land" for patients with atrial fibrillationcomplicated with wide QRS.

目的探讨无人区电轴对心房颤动伴宽QRS波群的临床意义。

These changes recovered after 1～2 weeks of pneumonectomy without QRS changes.

术后1～2周恢复至术前水平，不伴QRS改变。27例单纯肺切除患者术后未见ST段改变。

The latter was defined as an elevation of the QRS–ST junction of at least 0.1 mV from baseline in the inferior or lateral lead, manifested as QRS slurring or notching.

早期复极化定义为下壁或侧壁导联J点相对于基线抬高至少0.1mv，表现为QRS粗钝或切迹。

At the BCL of 500ms, 1000ms and 2000ms,the VWtimes increased markedly with the BCL prolonging, and the degree of increasing was even obviously when heart rate was slow (BCL=2000ms or 1000ms). The enlargement of VWs was a most important reason to increase the incidence of ventricular arrhythmias; 2）At the BCL of 500ms, 1000ms or 2000ms,the VWtimes of the premature stimulates S2 was at endomembrane were wider than at the outermembrane. We supposed that premature stimulates come from endomembrane was easier inducing VF compared with outermembrane;3The VWtime of unidirectional block was wider than reentry's, we can see that reporlarization dispersion changed dynamicly. 4The QRS polar of the premature stimulates was opposite the primary beats ,which suggesting that excitation of inducing premature beats was coming from epicardial. That is to say electrotonic potential take part in the creation of reentry;5With the ratio of the Tp-e/QT increasing the occurrence of VF was upgrading. So the ratio was an effective method to estimate the event of SCD.6 The VWtimes of S3 were broaden than S2's. But we can not study penetratingly, which is the contents of our future studies.

在BCL为500ms、 1000ms和2000ms刺激条件下，随着刺激周长的增加单向传导阻滞时间易损窗呈增大趋势；并且在心率较慢时(BCL为2000ms和1000ms)增大最明显，是LQTS患者室性心律失常发生率增加的原因之一；2）在BCL为500ms、 1000ms和2000ms刺激条件下，S2位于内膜侧时时间易损窗大于在外膜侧时的，推测来自于内膜侧的期前刺激易于诱发室性心律失常；3）折返激动时间易损窗小于在单向传导阻滞时间易损窗，折返易发生于S2刚进入单向传导阻滞区间时，这说明复极梯度的不均一是动态变化的；4心电图上倒置QRS波与正常S1刺激所引起QRS波极性相反，提示不同位置S2刺激引发的室性早搏的兴奋均来自于外膜侧，说明了电紧张电位扩布参与了折返的产生；5）Tp－e/QT可以反应跨膜复极离散度，随着Tp－e/QT比值的增加PVT的发生增多，其可以用来预测室性心律失常的发生。6）随着期前刺激数目的增加时间易损窗增大。

Since the most significant difference happened between the middle phase of expiration and the middle phase of inspiration, this result implies that it is the intrapulmonary pressure and the cardiac volume, but not the relative position of the heart and electrodes, which cause the variation of the amplitude of QRS complex.

其中QRS波的振幅在呼气中期最高在吸气中期最低，根据呼吸运动时肺容积及肺内压变化的规律，认为是由于胸腔压力和心室舒容积的改变，而不是心脏与电极间的相对位置的改变造成了QRS波振幅的变化。

If the local ventriculogram recorded during pacing appeared earlier than the V wave of His bundle electrogram and the shape of QRS wave during pacing is similar to that of spontaneous sinus beat,suggest the lead is located at the right ventricular inlet septal region.

若起搏时导线电极记录的局部心室电图的起点比希氏束上的V波提前，且起搏的QRS波与自身窦性搏动的QRS波相似，这个部位便是右心室流入道间隔部位。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。