房性期前收缩

结果胃镜术中90.55%的病人出现心率增快，出现的心律失常以窦性心动过速、室性期前收缩及房性期前收缩多见，STT改变以T波低平及ST段压低为主。

Results The heart rate of 90.55 % of the patients increased during the procedure , which included sinus tachycardia , ventricular premature beat or atrial premature beat . The main changes of ST-T segment were T wave flattening or inversion or ST segment depression .

8例分别为频发室性期前收缩、房性期前收缩、窦性心动过缓、窦性心动过速、Ⅰ度房室传导阻滞、Q-T间期延长。

The other 8 cases were recurrent attacks of ventricular premature beat , atrial premature beat , sinus bradycardia , sinus tachycardia , first degree atrioventricular block , lengthening of Q-T interval .

结论左心房上部房性期前收缩是PAf主要的触发因素，长-短周期现象是PAf发作的重要启动机制，自主神经失衡在PAf发作中起协同作用。

Long and short cycle is an important initiating mechanism .

研究PAF发作与窦性心室率、前5分钟窦性心律的心率变异、房性期前收缩及其配对间期的关系。

The study was focused on heart rate ( HR ) variation of sinus rhythm before 5 minutes attacking , relationship between premature atrial contraction , coupling interval and PAF episodes .

通过采用MIT心电数据库的数据进行测试，QRS波的正确检出率在99%以上，而室性期前收缩、房性期前收缩的正确检出率在90%以上。

Based on test results using data of MIT / BIH Arrhythmia Database , the veracity of QRS detection is 99 % . The veracity of detection of APC and PVC is also above 90 % .

触发心房颤动的房性期前收缩特征及抗心房颤动起搏器的疗效

Characteristic of atrial premature triggering atrial fibrillation and the effect of anti-atrial-fibrillation pacemaker

房性期前收缩诱发阵发性心房颤动的研究现状

Research of Atrial Premature Beat Induced Paroxysmal Atrial Fibrillation

结果显示：心房颤动或心房扑动发生前的长周期多见于房性期前收缩后代偿间歇及明显窦性心动过缓等心律失常；

Results showed that long _ cycle leading to atrial fibrillation and flutter were mostly compensating period due to atrial premature beat or obviously sinus bradycardia .

方法：随机选取有明显临床症状的室上性期前收缩患者112例。其中房性期前收缩77例，交界性期前收缩35例。

Method : Randomly selected 112 upper ventricular premature beat patients who had obviously clinical symptoms , in which there were 77 atria premature beat patients and 35 junctional premature beat patients .

2例左房心房颤动患者，1例在窦性心律下其致心房颤动房性期前收缩起源于左右上肺静脉之间，行线性消融成功；

One of the two Afi cases triggered by left atrial ectopic beats given linear lesion between left superior pulmonary vein ( LSPV ) and right superior pulmonary vein ( RSPV ) during sinus rhythm ;