查询词典 QRS

Methods 70 cases'12 leads cardiogram was studied before and after using key of resisting disturbance,to measure and observe change of swing and shape.

对70例受检者进行了使用抗干扰键前后的12导联心电图对比研究，测量并观察QRS波群振幅和形态的变化。

When compared with preinduction values, there were significantpostinduction changes in multiple variables of the HF QRS inmany leads studied that were within previously described normallimits.

与诱导前比较，诱导后多导联 HF QRS 的多个变量有显著变化。

Four quadripolar electrode catheters were inserted percutaneously and advanced under fluoroscopic guidance to the high right atrium, coronary sinus, right ventricular apex, and atrio-ventricular junction for recording of the His bundle electrogram.

ATP可终止由房室或房室结折返所致的宽QRS性SVT和可能是由于触发的自律性增高所致的宽QRS的VT，但对于由于折返机制所致的VT以及房颤和房扑则无疗效。

Electrocardiogram; QRS complexes ; detection of characteristic parameters ; difference threshold algorithm

心电图； QRS波群；特征参数检测；差分阈值法

Torsades de pointes is a special form of polymorphic ventricular tachycardia. It is characterized by continuously changing morphology of the QRS complexes that seem to twist around an imaginary line, rate dependence, underlying QT prolongation and the so called "long-short initiation sequence".

Torsades de pointes是一种特殊形态的多形性心室频脉，其心电图的特徵包括：QRS波的形态会一直改变，彷佛缠绕著一条假想的线；另外它的发作常与心博过缓有关，合并有QT间距延长，及以所谓「长-短」的序列而开始。

In China, there is no research in the field previously. This thesis supported by the Ministry Advanced Research Foundation of China, make a basic study of the instrument. Its achievements read as follows:(1) A new analytic method based on the concept of an equivalent volume force presented in this thesis, which solve the problem of piezoelectric beam, is simple, clear and reliable. By means of it, the design parameters for QRS have been calculated and analyzed serially, i. e., optimum electrode configurations are chosen, the side ratio of beam is determined, and the formula of electrode location efficiency is derived.

在我国这方面的研究尚属空白，本文在兵器部预研基金项目的支持下，对这种器件进行了基础性研究，从而填补了国内空白，具体包括如下内容：(1)提出了等效体力概念，以此为基础建立了一种分析压电振梁问题的新方法——等效体力分析法，该方法物理图象清晰、计算简明、结果可靠，它可以对QRS的设计参数进行系统的理论分析。

Objectives: To quantify the prognostic utility of QRS and QTc interval prolongation in patients presenting with acute destabilised heart failure to the emergency department.

最近瑞士巴塞尔大学医院的研究人员发现，QRS间期延长可增加急性失代偿性心力衰竭患者的长期死亡率，而QTc间期延长并不增加患者死亡率。

Methods The QRS complex was firstly detected by using continouse wavelet transform, then the feature sets were detected by different feature extraction technique. Using linear discriminants, 4 types of FCC beats based on MIT/BIH arrhythmia database were classified and the classification performance of the feature sets was evaluated.

首先采用连续小波变换对QRS复合波进行定位，然后采用不同的特征提取技术，提取一组特征矢量，送入线性判别式分类器进行训练，并对基于MIT/BIH数据库中的4类心搏进行分类，评价其分类性能。

Methods ECG findings from 75 cases of excessive volume load of left ventricle were discriminated.QRS amplitude variability was studied from 3 diseases such as mitral and aortic insufficiency and patent ducts arteriosus.

采用75例左室容量负荷过重病因的心电图鉴别，研究二尖瓣关闭不全、主动脉瓣关闭不全及动脉导管未闭等3种疾病的QRS振幅变化特征。

Abstract］ Objective To identify the effect of ECG for the etiological diagnosis of heart disease and investigate some differential diagnosis criteria of ECG.Methods ECG findings from 75 cases of excessive volume load of left ventricle were discriminated.QRS amplitude variability was studied from 3 diseases such as mitral and aortic insufficiency and patent ducts arteriosus.

目的 了明确心电图对心脏病病因诊断的作用，探讨ECG的某些鉴别诊断标准方法采用75例左室容量负荷过重病因的心电图鉴别，研究二尖瓣关闭不全、主动脉瓣关闭不全及动脉导管未闭等3 疾病的QRS振幅变化特征。

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。