双相波

双相波除颤仪除颤效果及副作用的实验研究

Studies on Defibrillation Effect and Side Effects of Biphasic Wave Defibrillator

慢波可分为双相波和间期。

The slow wave can be divided into two parts : the biphasic wave and interval .

方法7例持续性房颤患者接受低能量双相波R波同步体内电转复。

Methods Low energy intracardiac cardioversion was performed by delivering R wave synchronized biphasic shocks in 7 patients ( 4 men , 3 women ) with persistent atrial fibrillation .

目的研究除颤中双相波优于单相波的理论依据。

Objective To explore the mechanism underlying the superiority of the biphasic waveform to monophasic waveform in defibrillation .

方法分离兔右心室乳头肌、灌流并给予1HZ刺激使其等长收缩，于该基础刺激的绝对不应期给予双相方波电流刺激（称之CCM）。

Methods Papillary muscle was excised from the right ventricle and was paced at 1 ? Hz . Biphasic square wave current pulse was delivered during the ARP ( called CCM ) .

用频域滤波的方法，分别滤去一定低频成分，再IFFT恢复时域波形，时域信号出现了双相T波。

With the use of filtering method in frequency domain , certain low frequency components were filtered , the time domain waveform was retrieved by IFFT , and the biphase T wave appeared in time domain .

同时，以仿真结果为基础，设计出了结构简单、工作可靠、具有良好的稳压性能的双相半波可控整流稳压器。

Based on the simulation of different state , the two-phase half-wave regulator for permanent magnet generator is designed , it is simple in structure and has a good effect on regulating .

研制的双相指数截尾波体外除颤器系统包括心电采集，控制，除颤器三个模块，分别介绍了这三个部分。

We have designed an external defibrillator using the truncated exponential biphasic waveform . The system consists of three parts : the ECG collection module , the control module and the defibrillator module .

双相介质中储层波场特征数值模拟研究

Reservoir wave field characteristic numerical simulation in two-phase media

基于双相介质中地震波传播理论，论述了地震孔隙度预测原理。

The paper discusses the principle of porosity prediction with seismic data based on the propagation theory of seismic wave in diphase medium .

左背部导联几乎均为直立P波，少数为负正双相（V7~9导联负正双相P波出现率逐渐增多）。

In left back leads , almost all P waves were positive and negative-positive biphasic P waves were few ( From lead V_7 to lead V_9 , proportion of P wave in negative-positive biphase increased gradually ) .