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晕厥是由短暂的全脑组织缺血导致的短暂意识丧失,其特点为发生迅速的、短暂的、自限性的,并且能够完全恢复意识。晕厥在人群中尤其是老年人中有十分高的发生率。心源性疾病可以作为一个独立的判断远期发生严重事件的危险因素。神经源性晕厥因其缺乏心源性疾病为基础,预后相对较好。晕厥的发作频率是十分重要的判断晕厥反复发作的危险因素。晕厥导致的创伤,因神经源性晕厥常伴有一个较明显的前驱症状而相对较低,心源性晕厥则由于缺乏明显的前驱症状,发生创伤的概率较大。正确地分析晕厥的危险因素,可以指导临床医师做出更加个体化的随访方式,以期改善患者的预后。
Syncope is a transient loss of consciousness caused by brief global ischemia of the brain characterized by rapid, transient, self-limiting, and complete recovery of consciousness. Syncope is very high in the population, especially in the elderly. Cardiogenic disease can serve as an independent risk factor for judging the long-term occurrence of a serious event. Neurogenic syncope is based on a lack of cardiogenic disease and the prognosis is relatively good. Syncope seizure frequency is very important to determine the risk of recurrent syncope. Syncope-induced trauma, due to neurogenic syncope is often accompanied by a more obvious precursor symptoms and relatively low, cardiogenic syncope due to the lack of significant prodromal symptoms, the greater the probability of trauma. Proper analysis of the risk factors for syncope can guide clinicians to make more individualized follow-up modalities with a view to improving patient outcomes.