心动过速

Excessive sympathetic drive is by far the most common cause of sinus tachycardia .

过份的交感冲动是目前窦性心动过速最常见的原因。

Objective To observe the effects of Amiodarone and Verapamil in treating paroxysmal supraventricular tachycardia.

目的 观察静脉注射胺碘酮和维拉帕米治疗阵发性室上性心动过速的疗效。

Methods The data of 24 patients with LQTS and Torsade de pointed were summarized, the clinical manifestations and ECG characteristics were analyzed. Results Of 24 patients, 22 were females, 2 were males, the youngest was 9 years old.

回顾分析24例已确立诊断为长QT综合征和尖端扭转性室性心动过速的临床病例，对其临床和心电图特点进行分析。

Levofloxacin prolongs cardiac repolarization, a factor that is known to predispose to Torsade de Pointe, much more than moxifloxacin.

左氧氟沙星延长心脏的复极化，事实是都知道它可以预先用来治疗变异室性心动过速，要好过莫西沙星很多。

Background Slowly activating delayed rectifier potassium currentI_(Ks is important in therepolarization of human cardiomyocyte action potential,especially in forming andmaintaining plateau of action potential. I_ channel is combined byαandβsubunits,which are coded by KCNQ1 and KCNE1 respectively. Mutations ofhKCNQ1/hKCNE1 genes,chronic myocardial hypertrophy and chronic heartfailure will lead to dysfunction of I_ and ingenital or acquired LQTS which areimportant factor in hazardous ventricular arrhythmia such as Torsade depoints.

实验背景缓慢激活延迟整流钾电流I_(Ks是参与人心肌细胞动作电位复极，特别是平台期形成与维持的重要外向离子流。I_通道由KCNQ1基因编码的α亚单位及KCNE1基因编码的β亚单位组成。hKCNQ1/hKCNE1基因突变或慢性心肌肥厚、慢性心力衰竭等病理过程均可导致I_功能异常，引起遗传性或获得性长QT综合征，LQTS易引起尖端扭转型室性心动过速等心律失常，从而危及病人生命。

Transmembrane action potentials were recorded simultaneously from endocardium, epicardium, together with a transmural ECG, in arterially perfused left ventricular preparations by use of 2 separate intracellular floating microelectrodes. The stimulus-response- interval of the epicardium and the incidence of ventricular tachycardia were observed as well.

灌流全程同时采用浮置玻璃微电极法同步记录内膜下心肌、外膜下心肌跨膜动作电位和跨壁ECG，并观察心外膜下心肌的刺激反应间期(Stimulus-response-interval， SRI)和室性心动过速的诱发率。

Ventricular tachycardia or fibrillation or severe bradycardias or asystole may cause these symptoms in the form of a Stokes-Adams attack.

室性心动过速及心室纤颤或严重的心搏除缓或心搏停止均可引起这些症状，表现为Strokes-Adams发作。

Methods The experimental arrhythmia models were induced with barium chloride (BaCl2),uabaina and aconitine in rats and cobayaes.The incidence rate and mortality rate of arrhythmia,the emergence time and the duration of arrhythmia induced with BaCl2 were recorded in rats pretreated with CASI (in dosages of 25,50, and 100 mg·kg-1 sublingual vein injection).At the same time,the dosages of uabaina and aconitine were observed when the ventricular premature contraction,ventricular tachycardia,ventricular fibrillation and cardiac asystole were appeard in rats and cobayaes pretreated with CASI (in dosages of 25,50, and 100 mg·kg-1 sublingual vein injection).

制备氯化钡(BaCl2)、哇巴因及乌头碱诱导的大鼠及豚鼠实验性心律失常模型，CASI按25、50、100 mg·kg-1分为3个剂量组，舌下静脉给药1次，不给CASI作为对照组，记录大鼠给BaCl2后心律失常的发生率、出现时间、持续时间及动物的死亡率；观察豚鼠及大鼠出现室性早搏、室性心动过速、心室颤动及心脏停搏时哇巴因及乌头碱的用量。

Objective To retrospectively sum up the efficacy and safety of radiofrequency ablation in patients with dual atrioventricular nodal pathways.

目的 回顾性总结射频消融术治疗702例慢快型房室结折返性心动过速的疗效及安全性。

Two cases died of cardiogenic shock and ventricular tachycardia after procedures.

本组2例术后因心源性休克和室性心动过速死亡。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。