Ungar Andrea, Rafanelli Martina
Syncope Unit, Geriatrics and Intensive Care Unit, University of Florence, Azienda Ospedaliero Universitaria Careggi, Viale Pieraccini 6, Florence 50139, Italy.
Syncope Unit, Geriatrics and Intensive Care Unit, University of Florence, Azienda Ospedaliero Universitaria Careggi, Viale Pieraccini 6, Florence 50139, Italy.
Card Electrophysiol Clin. 2018 Jun;10(2):371-386. doi: 10.1016/j.ccep.2018.02.007.
Syncope is a frequent condition, owing to a transient global cerebral hypoperfusion, that may depend on a reduction of vascular total peripheral resistance and/or cardiac output. Cardiac syncope doubled the risk of death from any cause and increased the risk of nonfatal and fatal cardiovascular events. Arrhythmias are the most common cardiac causes of syncope. Both bradyarrhythmias and tachyarrhythmias may predispose to syncope. The first line evaluation relies on clinical history, physical examination, active standing test, 12-lead echocardiogram. The diagnostic yield of electrophysiological study in detecting the cause of syncope depends highly on the pretest probability.
晕厥是一种常见病症，由于短暂的全脑灌注不足所致，这可能取决于血管总外周阻力和/或心输出量的降低。心源性晕厥使任何原因导致的死亡风险加倍，并增加了非致命性和致命性心血管事件的风险。心律失常是晕厥最常见的心脏病因。缓慢性心律失常和快速性心律失常都可能诱发晕厥。一线评估依赖于临床病史、体格检查、主动站立试验、12导联心电图。电生理检查在检测晕厥病因方面的诊断率高度依赖于检查前的可能性。
