阿-斯综合征是临床常见的严重病征。最早用于昏厥、抽搐、心率缓慢的一组病征,后来把一切心排出量骤然下降,导致突然脑缺血,引起昏厥或抽搐,都称为阿-斯综合征。一、病因:1.心律失常:突然心率减慢或加快都可使心排出量骤降,常见有:(1)病窦综合征:长间歇窦静止,无逸搏心律产生,慢快综合征在心速发作突然停止时出现长间歇停搏;(2)房室传导阻滞:2:1或高度房室传导阻滞(AVB)突然转成Ⅲ°AVB,或慢性Ⅲ°AVB心室率慢于30次/分,心排血量不能维持;(3)起搏故障:人工起搏治疗病人,对起搏器有很强依赖性者,一旦发生电池耗竭,导线折断或短路,电极脱位,自身心律不能重建,则发生昏厥;(4)快速性心律不齐:常见 As-Syndrome is a common and serious clinical symptom. Earliest for syncope, convulsions, slow heart rate of a group of symptoms, and later all of a sudden drop in cardiac output, resulting in sudden cerebral ischemia, causing fainting or convulsions, are known as Asin Syndrome. First, the cause: 1. Arrhythmia: sudden heart rate can be slowed down or speed up the sudden drop in cardiac output, common are: (1) sick sinus syndrome: long intermittent sinus at rest, no escape pulse rhythm, slow syndrome (2) atrioventricular block: 2: 1 or atrioventricular block (AVB) suddenly turns into Ⅲ ° AVB, or chronic Ⅲ ° AVB ventricular rate slower than 30 beats / min, cardiac output can not be maintained; (3) pacing failure: artificial pacing treatment of patients, there is a strong dependence on the pacemaker, in the event of battery depletion, wire break or short circuit, electrode dislocation, Cardiac arrhythmias can not be reconstructed, the occurrence of syncope; (4) tachyarrhythmia: common