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一、临时性心脏起搏的适应证心脏起搏不超过4周者称为临时性起搏。临时性起搏用双极心内膜电极及体外式R-波抑制型按需型起搏器。 (一)急性心肌梗塞后临时性起搏的适应证急性心肌梗塞后并发房室传导阻滞或心动过缓时是否应用临时性心脏起搏,尚有争议。有人认为,急性心肌梗塞的转归主要决定于心肌坏死的程度而不决定于传导阻滞,因此对应用临时性心脏起搏持保守态度。但从临床实践出发,传导阻滞无疑会加重心肌梗塞时心功能障碍的程度。多数人认为,在药物不能维持必要的心率情况下,必须及时行心内膜临时性起搏,以维持必要的心排血量,而应用药物(异丙基肾上腺素)的副作用大于心内膜起搏。急性心肌梗塞并发症状性心动过缓时应用临时起搏的主要根据是心动过缓使心排血量进一步下降,加重
First, the indications of temporary cardiac pacing Cardiac pacing less than 4 weeks are called temporary pacing. Bipolar endocardial electrodes for temporary pacing and in vitro R-wave suppression on-demand pacemaker. (A) of the indications for temporary pacing after acute myocardial infarction Acute myocardial infarction complicated by atrioventricular block or bradycardia is the application of temporary cardiac pacing, is still controversial. Some people think that the outcome of acute myocardial infarction depends mainly on the extent of myocardial necrosis rather than conduction block, so the use of temporary cardiac pacing with conservative. However, starting from clinical practice, conduction block will undoubtedly aggravate the degree of cardiac dysfunction in myocardial infarction. Most people think that in the drug can not maintain the necessary heart rate circumstances, we must prompt epicardial temporary pacing in order to maintain the necessary cardiac output, and the application of drugs (isoproterenol) side effects than the endocardium Pacing. The main basis for the application of temporary pacing in patients with acute myocardial infarction symptomatic bradycardia is bradycardia to further reduce cardiac output, increased